diff --git a/luxwidget/nbextension/static/index.js b/luxwidget/nbextension/static/index.js index 2146247..e813712 100644 --- a/luxwidget/nbextension/static/index.js +++ b/luxwidget/nbextension/static/index.js @@ -92,7 +92,7 @@ var G=new WeakMap,X=function(e){this.observers=new Map,this.obj=e},K=function(e, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ -var n="undefined"!=typeof window&&"undefined"!=typeof document&&"undefined"!=typeof navigator,r=function(){for(var e=["Edge","Trident","Firefox"],t=0;t=0)return 1;return 0}();var i=n&&window.Promise?function(e){var t=!1;return function(){t||(t=!0,window.Promise.resolve().then((function(){t=!1,e()})))}}:function(e){var t=!1;return function(){t||(t=!0,setTimeout((function(){t=!1,e()}),r))}};function o(e){return e&&"[object Function]"==={}.toString.call(e)}function a(e,t){if(1!==e.nodeType)return[];var n=e.ownerDocument.defaultView.getComputedStyle(e,null);return t?n[t]:n}function s(e){return"HTML"===e.nodeName?e:e.parentNode||e.host}function u(e){if(!e)return document.body;switch(e.nodeName){case"HTML":case"BODY":return e.ownerDocument.body;case"#document":return e.body}var t=a(e),n=t.overflow,r=t.overflowX,i=t.overflowY;return/(auto|scroll|overlay)/.test(n+i+r)?e:u(s(e))}function l(e){return e&&e.referenceNode?e.referenceNode:e}var c=n&&!(!window.MSInputMethodContext||!document.documentMode),f=n&&/MSIE 10/.test(navigator.userAgent);function d(e){return 11===e?c:10===e?f:c||f}function h(e){if(!e)return document.documentElement;for(var t=d(10)?document.body:null,n=e.offsetParent||null;n===t&&e.nextElementSibling;)n=(e=e.nextElementSibling).offsetParent;var r=n&&n.nodeName;return r&&"BODY"!==r&&"HTML"!==r?-1!==["TH","TD","TABLE"].indexOf(n.nodeName)&&"static"===a(n,"position")?h(n):n:e?e.ownerDocument.documentElement:document.documentElement}function p(e){return null!==e.parentNode?p(e.parentNode):e}function m(e,t){if(!(e&&e.nodeType&&t&&t.nodeType))return document.documentElement;var n=e.compareDocumentPosition(t)&Node.DOCUMENT_POSITION_FOLLOWING,r=n?e:t,i=n?t:e,o=document.createRange();o.setStart(r,0),o.setEnd(i,0);var a,s,u=o.commonAncestorContainer;if(e!==u&&t!==u||r.contains(i))return"BODY"===(s=(a=u).nodeName)||"HTML"!==s&&h(a.firstElementChild)!==a?h(u):u;var l=p(e);return l.host?m(l.host,t):m(e,p(t).host)}function g(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"top",n="top"===t?"scrollTop":"scrollLeft",r=e.nodeName;if("BODY"===r||"HTML"===r){var i=e.ownerDocument.documentElement,o=e.ownerDocument.scrollingElement||i;return o[n]}return e[n]}function v(e,t){var n=arguments.length>2&&void 0!==arguments[2]&&arguments[2],r=g(t,"top"),i=g(t,"left"),o=n?-1:1;return e.top+=r*o,e.bottom+=r*o,e.left+=i*o,e.right+=i*o,e}function b(e,t){var n="x"===t?"Left":"Top",r="Left"===n?"Right":"Bottom";return parseFloat(e["border"+n+"Width"])+parseFloat(e["border"+r+"Width"])}function y(e,t,n,r){return Math.max(t["offset"+e],t["scroll"+e],n["client"+e],n["offset"+e],n["scroll"+e],d(10)?parseInt(n["offset"+e])+parseInt(r["margin"+("Height"===e?"Top":"Left")])+parseInt(r["margin"+("Height"===e?"Bottom":"Right")]):0)}function x(e){var t=e.body,n=e.documentElement,r=d(10)&&getComputedStyle(n);return{height:y("Height",t,n,r),width:y("Width",t,n,r)}}var w=function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")},_=function(){function e(e,t){for(var n=0;n2&&void 0!==arguments[2]&&arguments[2],r=d(10),i="HTML"===t.nodeName,o=j(e),s=j(t),l=u(e),c=a(t),f=parseFloat(c.borderTopWidth),h=parseFloat(c.borderLeftWidth);n&&i&&(s.top=Math.max(s.top,0),s.left=Math.max(s.left,0));var p=k({top:o.top-s.top-f,left:o.left-s.left-h,width:o.width,height:o.height});if(p.marginTop=0,p.marginLeft=0,!r&&i){var m=parseFloat(c.marginTop),g=parseFloat(c.marginLeft);p.top-=f-m,p.bottom-=f-m,p.left-=h-g,p.right-=h-g,p.marginTop=m,p.marginLeft=g}return(r&&!n?t.contains(l):t===l&&"BODY"!==l.nodeName)&&(p=v(p,t)),p}function C(e){var t=arguments.length>1&&void 0!==arguments[1]&&arguments[1],n=e.ownerDocument.documentElement,r=S(e,n),i=Math.max(n.clientWidth,window.innerWidth||0),o=Math.max(n.clientHeight,window.innerHeight||0),a=t?0:g(n),s=t?0:g(n,"left"),u={top:a-r.top+r.marginTop,left:s-r.left+r.marginLeft,width:i,height:o};return k(u)}function A(e){var t=e.nodeName;if("BODY"===t||"HTML"===t)return!1;if("fixed"===a(e,"position"))return!0;var n=s(e);return!!n&&A(n)}function T(e){if(!e||!e.parentElement||d())return document.documentElement;for(var t=e.parentElement;t&&"none"===a(t,"transform");)t=t.parentElement;return t||document.documentElement}function N(e,t,n,r){var i=arguments.length>4&&void 0!==arguments[4]&&arguments[4],o={top:0,left:0},a=i?T(e):m(e,l(t));if("viewport"===r)o=C(a,i);else{var c=void 0;"scrollParent"===r?"BODY"===(c=u(s(t))).nodeName&&(c=e.ownerDocument.documentElement):c="window"===r?e.ownerDocument.documentElement:r;var f=S(c,a,i);if("HTML"!==c.nodeName||A(a))o=f;else{var d=x(e.ownerDocument),h=d.height,p=d.width;o.top+=f.top-f.marginTop,o.bottom=h+f.top,o.left+=f.left-f.marginLeft,o.right=p+f.left}}var g="number"==typeof(n=n||0);return o.left+=g?n:n.left||0,o.top+=g?n:n.top||0,o.right-=g?n:n.right||0,o.bottom-=g?n:n.bottom||0,o}function D(e){return e.width*e.height}function M(e,t,n,r,i){var o=arguments.length>5&&void 0!==arguments[5]?arguments[5]:0;if(-1===e.indexOf("auto"))return e;var a=N(n,r,o,i),s={top:{width:a.width,height:t.top-a.top},right:{width:a.right-t.right,height:a.height},bottom:{width:a.width,height:a.bottom-t.bottom},left:{width:t.left-a.left,height:a.height}},u=Object.keys(s).map((function(e){return E({key:e},s[e],{area:D(s[e])})})).sort((function(e,t){return t.area-e.area})),l=u.filter((function(e){var t=e.width,r=e.height;return t>=n.clientWidth&&r>=n.clientHeight})),c=l.length>0?l[0].key:u[0].key,f=e.split("-")[1];return c+(f?"-"+f:"")}function F(e,t,n){var r=arguments.length>3&&void 0!==arguments[3]?arguments[3]:null,i=r?T(t):m(t,l(n));return S(n,i,r)}function P(e){var t=e.ownerDocument.defaultView.getComputedStyle(e),n=parseFloat(t.marginTop||0)+parseFloat(t.marginBottom||0),r=parseFloat(t.marginLeft||0)+parseFloat(t.marginRight||0);return{width:e.offsetWidth+r,height:e.offsetHeight+n}}function R(e){var t={left:"right",right:"left",bottom:"top",top:"bottom"};return e.replace(/left|right|bottom|top/g,(function(e){return t[e]}))}function z(e,t,n){n=n.split("-")[0];var r=P(e),i={width:r.width,height:r.height},o=-1!==["right","left"].indexOf(n),a=o?"top":"left",s=o?"left":"top",u=o?"height":"width",l=o?"width":"height";return i[a]=t[a]+t[u]/2-r[u]/2,i[s]=n===s?t[s]-r[l]:t[R(s)],i}function L(e,t){return Array.prototype.find?e.find(t):e.filter(t)[0]}function I(e,t,n){return(void 0===n?e:e.slice(0,function(e,t,n){if(Array.prototype.findIndex)return e.findIndex((function(e){return e[t]===n}));var r=L(e,(function(e){return e[t]===n}));return e.indexOf(r)}(e,"name",n))).forEach((function(e){e.function&&console.warn("`modifier.function` is deprecated, use `modifier.fn`!");var n=e.function||e.fn;e.enabled&&o(n)&&(t.offsets.popper=k(t.offsets.popper),t.offsets.reference=k(t.offsets.reference),t=n(t,e))})),t}function B(){if(!this.state.isDestroyed){var e={instance:this,styles:{},arrowStyles:{},attributes:{},flipped:!1,offsets:{}};e.offsets.reference=F(this.state,this.popper,this.reference,this.options.positionFixed),e.placement=M(this.options.placement,e.offsets.reference,this.popper,this.reference,this.options.modifiers.flip.boundariesElement,this.options.modifiers.flip.padding),e.originalPlacement=e.placement,e.positionFixed=this.options.positionFixed,e.offsets.popper=z(this.popper,e.offsets.reference,e.placement),e.offsets.popper.position=this.options.positionFixed?"fixed":"absolute",e=I(this.modifiers,e),this.state.isCreated?this.options.onUpdate(e):(this.state.isCreated=!0,this.options.onCreate(e))}}function U(e,t){return e.some((function(e){var n=e.name;return e.enabled&&n===t}))}function $(e){for(var t=[!1,"ms","Webkit","Moz","O"],n=e.charAt(0).toUpperCase()+e.slice(1),r=0;r1&&void 0!==arguments[1]&&arguments[1],n=Z.indexOf(e),r=Z.slice(n+1).concat(Z.slice(0,n));return t?r.reverse():r}var te="flip",ne="clockwise",re="counterclockwise";function ie(e,t,n,r){var i=[0,0],o=-1!==["right","left"].indexOf(r),a=e.split(/(\+|\-)/).map((function(e){return e.trim()})),s=a.indexOf(L(a,(function(e){return-1!==e.search(/,|\s/)})));a[s]&&-1===a[s].indexOf(",")&&console.warn("Offsets separated by white space(s) are deprecated, use a comma (,) instead.");var u=/\s*,\s*|\s+/,l=-1!==s?[a.slice(0,s).concat([a[s].split(u)[0]]),[a[s].split(u)[1]].concat(a.slice(s+1))]:[a];return(l=l.map((function(e,r){var i=(1===r?!o:o)?"height":"width",a=!1;return e.reduce((function(e,t){return""===e[e.length-1]&&-1!==["+","-"].indexOf(t)?(e[e.length-1]=t,a=!0,e):a?(e[e.length-1]+=t,a=!1,e):e.concat(t)}),[]).map((function(e){return function(e,t,n,r){var i=e.match(/((?:\-|\+)?\d*\.?\d*)(.*)/),o=+i[1],a=i[2];if(!o)return e;if(0===a.indexOf("%")){var s=void 0;switch(a){case"%p":s=n;break;case"%":case"%r":default:s=r}return k(s)[t]/100*o}if("vh"===a||"vw"===a){return("vh"===a?Math.max(document.documentElement.clientHeight,window.innerHeight||0):Math.max(document.documentElement.clientWidth,window.innerWidth||0))/100*o}return o}(e,i,t,n)}))}))).forEach((function(e,t){e.forEach((function(n,r){G(n)&&(i[t]+=n*("-"===e[r-1]?-1:1))}))})),i}var oe={placement:"bottom",positionFixed:!1,eventsEnabled:!0,removeOnDestroy:!1,onCreate:function(){},onUpdate:function(){},modifiers:{shift:{order:100,enabled:!0,fn:function(e){var t=e.placement,n=t.split("-")[0],r=t.split("-")[1];if(r){var i=e.offsets,o=i.reference,a=i.popper,s=-1!==["bottom","top"].indexOf(n),u=s?"left":"top",l=s?"width":"height",c={start:O({},u,o[u]),end:O({},u,o[u]+o[l]-a[l])};e.offsets.popper=E({},a,c[r])}return e}},offset:{order:200,enabled:!0,fn:function(e,t){var n=t.offset,r=e.placement,i=e.offsets,o=i.popper,a=i.reference,s=r.split("-")[0],u=void 0;return u=G(+n)?[+n,0]:ie(n,o,a,s),"left"===s?(o.top+=u[0],o.left-=u[1]):"right"===s?(o.top+=u[0],o.left+=u[1]):"top"===s?(o.left+=u[0],o.top-=u[1]):"bottom"===s&&(o.left+=u[0],o.top+=u[1]),e.popper=o,e},offset:0},preventOverflow:{order:300,enabled:!0,fn:function(e,t){var n=t.boundariesElement||h(e.instance.popper);e.instance.reference===n&&(n=h(n));var r=$("transform"),i=e.instance.popper.style,o=i.top,a=i.left,s=i[r];i.top="",i.left="",i[r]="";var u=N(e.instance.popper,e.instance.reference,t.padding,n,e.positionFixed);i.top=o,i.left=a,i[r]=s,t.boundaries=u;var l=t.priority,c=e.offsets.popper,f={primary:function(e){var n=c[e];return c[e]u[e]&&!t.escapeWithReference&&(r=Math.min(c[n],u[e]-("right"===e?c.width:c.height))),O({},n,r)}};return l.forEach((function(e){var t=-1!==["left","top"].indexOf(e)?"primary":"secondary";c=E({},c,f[t](e))})),e.offsets.popper=c,e},priority:["left","right","top","bottom"],padding:5,boundariesElement:"scrollParent"},keepTogether:{order:400,enabled:!0,fn:function(e){var t=e.offsets,n=t.popper,r=t.reference,i=e.placement.split("-")[0],o=Math.floor,a=-1!==["top","bottom"].indexOf(i),s=a?"right":"bottom",u=a?"left":"top",l=a?"width":"height";return n[s]o(r[s])&&(e.offsets.popper[u]=o(r[s])),e}},arrow:{order:500,enabled:!0,fn:function(e,t){var n;if(!J(e.instance.modifiers,"arrow","keepTogether"))return e;var r=t.element;if("string"==typeof r){if(!(r=e.instance.popper.querySelector(r)))return e}else if(!e.instance.popper.contains(r))return console.warn("WARNING: `arrow.element` must be child of its popper element!"),e;var i=e.placement.split("-")[0],o=e.offsets,s=o.popper,u=o.reference,l=-1!==["left","right"].indexOf(i),c=l?"height":"width",f=l?"Top":"Left",d=f.toLowerCase(),h=l?"left":"top",p=l?"bottom":"right",m=P(r)[c];u[p]-ms[p]&&(e.offsets.popper[d]+=u[d]+m-s[p]),e.offsets.popper=k(e.offsets.popper);var g=u[d]+u[c]/2-m/2,v=a(e.instance.popper),b=parseFloat(v["margin"+f]),y=parseFloat(v["border"+f+"Width"]),x=g-e.offsets.popper[d]-b-y;return x=Math.max(Math.min(s[c]-m,x),0),e.arrowElement=r,e.offsets.arrow=(O(n={},d,Math.round(x)),O(n,h,""),n),e},element:"[x-arrow]"},flip:{order:600,enabled:!0,fn:function(e,t){if(U(e.instance.modifiers,"inner"))return e;if(e.flipped&&e.placement===e.originalPlacement)return e;var n=N(e.instance.popper,e.instance.reference,t.padding,t.boundariesElement,e.positionFixed),r=e.placement.split("-")[0],i=R(r),o=e.placement.split("-")[1]||"",a=[];switch(t.behavior){case te:a=[r,i];break;case ne:a=ee(r);break;case re:a=ee(r,!0);break;default:a=t.behavior}return a.forEach((function(s,u){if(r!==s||a.length===u+1)return e;r=e.placement.split("-")[0],i=R(r);var l=e.offsets.popper,c=e.offsets.reference,f=Math.floor,d="left"===r&&f(l.right)>f(c.left)||"right"===r&&f(l.left)f(c.top)||"bottom"===r&&f(l.top)f(n.right),m=f(l.top)f(n.bottom),v="left"===r&&h||"right"===r&&p||"top"===r&&m||"bottom"===r&&g,b=-1!==["top","bottom"].indexOf(r),y=!!t.flipVariations&&(b&&"start"===o&&h||b&&"end"===o&&p||!b&&"start"===o&&m||!b&&"end"===o&&g),x=!!t.flipVariationsByContent&&(b&&"start"===o&&p||b&&"end"===o&&h||!b&&"start"===o&&g||!b&&"end"===o&&m),w=y||x;(d||v||w)&&(e.flipped=!0,(d||v)&&(r=a[u+1]),w&&(o=function(e){return"end"===e?"start":"start"===e?"end":e}(o)),e.placement=r+(o?"-"+o:""),e.offsets.popper=E({},e.offsets.popper,z(e.instance.popper,e.offsets.reference,e.placement)),e=I(e.instance.modifiers,e,"flip"))})),e},behavior:"flip",padding:5,boundariesElement:"viewport",flipVariations:!1,flipVariationsByContent:!1},inner:{order:700,enabled:!1,fn:function(e){var t=e.placement,n=t.split("-")[0],r=e.offsets,i=r.popper,o=r.reference,a=-1!==["left","right"].indexOf(n),s=-1===["top","left"].indexOf(n);return i[a?"left":"top"]=o[n]-(s?i[a?"width":"height"]:0),e.placement=R(t),e.offsets.popper=k(i),e}},hide:{order:800,enabled:!0,fn:function(e){if(!J(e.instance.modifiers,"hide","preventOverflow"))return e;var t=e.offsets.reference,n=L(e.instance.modifiers,(function(e){return"preventOverflow"===e.name})).boundaries;if(t.bottomn.right||t.top>n.bottom||t.right2&&void 0!==arguments[2]?arguments[2]:{};w(this,e),this.scheduleUpdate=function(){return requestAnimationFrame(r.update)},this.update=i(this.update.bind(this)),this.options=E({},e.Defaults,a),this.state={isDestroyed:!1,isCreated:!1,scrollParents:[]},this.reference=t&&t.jquery?t[0]:t,this.popper=n&&n.jquery?n[0]:n,this.options.modifiers={},Object.keys(E({},e.Defaults.modifiers,a.modifiers)).forEach((function(t){r.options.modifiers[t]=E({},e.Defaults.modifiers[t]||{},a.modifiers?a.modifiers[t]:{})})),this.modifiers=Object.keys(this.options.modifiers).map((function(e){return E({name:e},r.options.modifiers[e])})).sort((function(e,t){return e.order-t.order})),this.modifiers.forEach((function(e){e.enabled&&o(e.onLoad)&&e.onLoad(r.reference,r.popper,r.options,e,r.state)})),this.update();var s=this.options.eventsEnabled;s&&this.enableEventListeners(),this.state.eventsEnabled=s}return _(e,[{key:"update",value:function(){return B.call(this)}},{key:"destroy",value:function(){return q.call(this)}},{key:"enableEventListeners",value:function(){return V.call(this)}},{key:"disableEventListeners",value:function(){return Y.call(this)}}]),e}();ae.Utils=("undefined"!=typeof window?window:e).PopperUtils,ae.placements=Q,ae.Defaults=oe,t.a=ae}).call(this,n(40))},function(e,t,n){"use strict";function r(e){for(var t="https://material-ui.com/production-error/?code="+e,n=1;ne.length)&&(t=e.length);for(var n=0,r=new Array(t);n-1){var i=ge[e];if(!Array.isArray(i))return W+ee(i)in t&&H+i;if(!r)return!1;for(var o=0;ot?1:-1:e.length-t.length};return{onProcessStyle:function(t,n){if("style"!==n.type)return t;for(var r={},i=Object.keys(t).sort(e),o=0;o{this.setState({currentVisSelected:e},()=>{-1==e?this.onListChanged(-1,null):this.onListChanged(-2,null)})};for(var t=0;t0&&(n[i]=this.state.selectedRec[r])}else-1==this.state.currentVisSelected&&(n.currentVis=this.state.currentVis);this.setState({_selectedVisIdxs:n})}exportSelection(){h.dispatchLogEvent("exportBtnClick",this.state._selectedVisIdxs),this.setState(e=>({showAlert:!0})),setTimeout(()=>{this.setState(e=>({showAlert:!1}))},6e4),e.model.set("_selectedVisIdxs",this.state._selectedVisIdxs),e.model.save()}deleteSelection(){h.dispatchLogEvent("deleteBtnClick",this.state._selectedVisIdxs);var t=this.state._selectedVisIdxs;for(var n of this.state.recommendations)if(this.state._selectedVisIdxs[n.action]){let e=0;for(var r of this.state._selectedVisIdxs[n.action])n.vspec.splice(r-e,1),e++}this.setState({selectedRec:{},_selectedVisIdxs:{},deletedIndices:t});for(var i=0;is.createElement(c.Tab,{eventKey:e.action,title:e.action},s.createElement(f.default,{key:"no refresh",ref:this.chartComponents[t],title:e.action,description:e.description,multiple:!0,maxSelectable:10,onChange:this.onListChanged.bind(this,t),graphSpec:e.vspec,currentVisShow:!l.default.isEmpty(this.props.model.get("current_vis"))})))}render(){var e=Object.keys(this.state._selectedVisIdxs).length>0,t=1==Object.keys(this.state._selectedVisIdxs).length&&1==Object.values(this.state._selectedVisIdxs)[0].length;return 0==this.state.recommendations.length?s.createElement("div",{id:"oneViewWidgetContainer",style:{flexDirection:"column"}},s.createElement("div",{style:{display:"flex",flexDirection:"row"}},s.createElement(d.default,{intent:this.state.intent,currentVisSpec:this.state.currentVis,numRecommendations:0,onChange:this.handleCurrentVisSelect})),s.createElement(p.default,{buttonsEnabled:e,deleteSelection:this.deleteSelection,exportSelection:this.exportSelection,setIntent:this.setIntent,closeExportInfo:this.closeExportInfo,tabItems:this.state.tabItems,showAlert:this.state.showAlert,intentEnabled:t})):s.createElement("div",{id:"widgetContainer",style:{flexDirection:"column"}},s.createElement("div",{style:{display:"flex",flexDirection:"row"}},s.createElement(d.default,{intent:this.state.intent,currentVisSpec:this.state.currentVis,numRecommendations:this.state.recommendations.length,onChange:this.handleCurrentVisSelect}),s.createElement("div",{id:"tabBanner"},s.createElement("p",{className:"title-description",style:{visibility:l.default.isEmpty(this.state.currentVis)?"hidden":"visible"}},"You might be interested in..."),s.createElement(c.Tabs,{activeKey:this.state.activeTab,id:"tabBannerList",onSelect:this.handleSelect,className:l.default.isEmpty(this.state.currentVis)?"":"tabBannerPadding"},this.state.tabItems))),s.createElement(p.default,{buttonsEnabled:e,deleteSelection:this.deleteSelection,exportSelection:this.exportSelection,setIntent:this.setIntent,closeExportInfo:this.closeExportInfo,tabItems:this.state.tabItems,showAlert:this.state.showAlert,intentEnabled:t}),s.createElement(m.default,{message:this.state.message,openPanel:this.openPanel,closePanel:this.closePanel,openWarning:this.state.openWarning}))}}const n=document.createElement("div"),r=s.createElement(t,e);u.render(r,n),e.el.append(n),h.dispatchLogEvent("initWidget",""),$(".widget-button").on("click",(function(e){var t,n=null!=e.currentTarget.parentNode.parentNode.nextSibling.querySelector("#widgetContainer");null!=e.currentTarget.parentNode.parentNode.nextSibling.querySelector(".dataframe")?t="lux":n&&(t="pandas"),h.dispatchLogEvent("toggleBtnClick",t),e.stopImmediatePropagation()}))}}t.LuxWidgetView=v},function(t,n){t.exports=e},function(e,t,n){var r=n(87);"string"==typeof(r=r.__esModule?r.default:r)&&(r=[[e.i,r,""]]);var i={insert:"head",singleton:!1};n(89)(r,i);r.locals&&(e.exports=r.locals)},function(e,t,n){(t=n(88)(!1)).push([e.i,"#widgetContainer{\r\n /* height: 315px; */\r\n width:100%;\r\n display:inline-flex;\r\n}\r\n\r\n#oneViewWidgetContainer {\r\n height:200px;\r\n width:100%;\r\n display:inline-flex;\r\n}\r\ninput[type=text], select {\r\n width: 100%;\r\n padding: 12px 20px;\r\n margin: 8px 0;\r\n display: inline-block;\r\n border: 1px solid #ccc;\r\n border-radius: 4px;\r\n box-sizing: border-box;\r\n}\r\n#mult-graph-container{\r\n display: inline-flex;\r\n}\r\n.recommendationStaticContentOuter{\r\n scroll-snap-align: start;\r\n /* border: 0.5px solid #bcbdbd; */\r\n overflow-x: auto;\r\n overflow-y: hidden;\r\n display: inline-block;\r\n text-align: left;\r\n /* padding-left: 20px; */\r\n /* padding-top: 10px; */\r\n /* height: 100%; */\r\n box-sizing: border-box;\r\n width: 100%;\r\n position: relative;\r\n}\r\n.recommendationContentOuter{\r\n /* overflow: scroll; */\r\n /* Prevents unneccesary x-scroll for specified facet */\r\n /* width: 100%; */\r\n /*height: 225px;*/\r\n display: flex;\r\n /* display: inline-block;*/\r\n margin-left: 10px;\r\n text-align: left;\r\n}\r\n.vega-embed {\r\n position: relative;\r\n display: inline-block;\r\n /* padding-right: 38px; */\r\n flex: 1 0 auto;\r\n padding-right: 10px !important;\r\n}\r\n/* .vega-embed:hover{\r\n border: solid 1px;\r\n border-color: rgba(0, 0, 0, 0.4);\r\n box-shadow: 5px 5px 5px 0px rgba(0,0,0,0.5);\r\n cursor: pointer;\r\n} */\r\n.vega-embed:checked{\r\n border: solid 1px;\r\n border-color: blue;\r\n}\r\n.recommendationContentInner{\r\n /*width: auto;\r\n max-width: 150%;*/\r\n /*display: inline-block;*/\r\n /*margin-left: 8px;*/\r\n text-align: left;\r\n display: flex;\r\n flex-wrap: nowrap;\r\n align-items: flex-end;\r\n /* overflow-x: auto; */\r\n overflow-x: initial;\r\n padding-right: 50px;\r\n /*height: 280px;*/\r\n /* width: max-content;\r\n overflow-x: auto; */\r\n /* height: 100px; */\r\n}\r\n\r\n.toolDiv{\r\n position: relative;\r\n top: -20px;\r\n left: -5px;\r\n}\r\n.fa {\r\n color:gray;\r\n}\r\n.fa:hover{\r\n color:black;\r\n}\r\n.graph-container{\r\n height: 250px;\r\n max-height: 270px;\r\n margin: 10px 0px 5px 5px;\r\n padding: 0px 0px 0px 0px;\r\n}\r\n#mainVizTitle{\r\n font-size: 20px;\r\n display: inline-block;\r\n left: 10%;\r\n top: 0px;\r\n position: absolute;\r\n}\r\n#mainVizContainer{\r\n padding: 10px 0px 0px 0px;\r\n border: 0.5px solid #bcbdbd;\r\n overflow-y: auto;\r\n}\r\n\r\n#mainVizInnerContainer{\r\n margin-top: 50px;\r\n}\r\n\r\n#placeHolderVizContainer{\r\n min-height: 100%;\r\n min-width: 1px;\r\n}\r\n#tabBanner{\r\n border: 0.5px solid #bcbdbd;\r\n width: auto;\r\n overflow: hidden;\r\n flex: 1;\r\n}\r\n#exportBtn{\r\n position: absolute;\r\n /* bottom: 90%; */\r\n /* left: 97%; */\r\n top: 5px;\r\n right: 5px;\r\n font-size: 20px;\r\n padding: 5px;\r\n}\r\n\r\n#deleteBtn{\r\n position: absolute;\r\n top: 5px;\r\n right: 33px;\r\n font-size: 20px;\r\n padding: 5px;\r\n}\r\n\r\n#intentBtn{\r\n position: absolute;\r\n top: 5px;\r\n right: 59px;\r\n font-size: 20px;\r\n padding: 5px;\r\n}\r\n\r\n#alertBox{\r\n position: absolute;\r\n left: 23%;\r\n width: 54%;\r\n bottom: 6%;\r\n padding: 5px 30px 5px 10px;\r\n}\r\n\r\n\r\n/* canvas{\r\n width: 229px;\r\n height: 245px;\r\n} */\r\n/* Override .fade default to show tab*/\r\n.fade {\r\n opacity:1;\r\n}\r\n/* Copied from bootstrap.css */\r\n.nav {\r\n display: -ms-flexbox;\r\n display: flex;\r\n -ms-flex-wrap: wrap;\r\n flex-wrap: wrap;\r\n padding-left: 0;\r\n margin-bottom: 0;\r\n list-style: none;\r\n}\r\n\r\n.nav-link {\r\n display: block;\r\n padding: 0.5rem 1rem;\r\n}\r\n\r\n.nav-link:hover, .nav-link:focus {\r\n text-decoration: none;\r\n}\r\n\r\n.nav-link.disabled {\r\n color: #6c757d;\r\n pointer-events: none;\r\n cursor: default;\r\n}\r\n\r\n.nav-tabs {\r\n border-bottom: 1px solid #dee2e6;\r\n}\r\n\r\n.tabBannerPadding {\r\n padding-left: 210px;\r\n}\r\n\r\n.nav-tabs .nav-item {\r\n margin-bottom: -1px;\r\n}\r\n\r\n.nav-tabs .nav-link {\r\n border: 1px solid transparent;\r\n border-top-left-radius: 0.25rem;\r\n border-top-right-radius: 0.25rem;\r\n}\r\n\r\n.nav-tabs .nav-link:hover, .nav-tabs .nav-link:focus {\r\n border-color: #e9ecef #e9ecef #dee2e6;\r\n}\r\n\r\n.nav-tabs .nav-link.disabled {\r\n color: #6c757d;\r\n background-color: transparent;\r\n border-color: transparent;\r\n}\r\n\r\n.nav-tabs .nav-link.active,\r\n.nav-tabs .nav-item.show .nav-link {\r\n color: #495057;\r\n background-color: #fff;\r\n border-color: #dee2e6 #dee2e6 #fff;\r\n font-weight: 500;\r\n}\r\n\r\n.nav-tabs .dropdown-menu {\r\n margin-top: -1px;\r\n border-top-left-radius: 0;\r\n border-top-right-radius: 0;\r\n}\r\n\r\n.nav-pills .nav-link {\r\n border-radius: 0.25rem;\r\n}\r\n\r\n.nav-pills .nav-link.active,\r\n.nav-pills .show > .nav-link {\r\n color: #fff;\r\n background-color: #007bff;\r\n}\r\n\r\n.nav-fill .nav-item {\r\n -ms-flex: 1 1 auto;\r\n flex: 1 1 auto;\r\n text-align: center;\r\n}\r\n\r\n.nav-justified .nav-item {\r\n -ms-flex-preferred-size: 0;\r\n flex-basis: 0;\r\n -ms-flex-positive: 1;\r\n flex-grow: 1;\r\n text-align: center;\r\n}\r\n\r\n.tab-content > .tab-pane {\r\n display: none;\r\n}\r\n\r\n.tab-content > .active {\r\n display: block;\r\n}\r\n/* Selectable Card React Component CSS */\r\n/* Card */\r\n.card {\r\n transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);\r\n box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);\r\n background: #fff;\r\n margin: 20px 10px;\r\n cursor: pointer;\r\n}\r\n.card:hover {\r\n box-shadow: 0 14px 28px rgba(0, 0, 0, 0.25), 0 10px 10px rgba(0, 0, 0, 0.22);\r\n}\r\n/* Selectable */\r\n.card .selectable {\r\n position: relative;\r\n transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);\r\n border: 4px solid transparent;\r\n}\r\n.card .selectable .check {\r\n transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);\r\n position: absolute;\r\n top: 0;\r\n right: 0;\r\n z-index: 10;\r\n width: 20px;\r\n height: 20px;\r\n}\r\n.card .selectable .check:before {\r\n transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);\r\n content: '';\r\n border: 20px solid;\r\n border-color: transparent;\r\n position: absolute;\r\n top: 0;\r\n right: 0;\r\n z-index: -1;\r\n}\r\n.card .selectable .check .checkmark {\r\n display: block;\r\n font: 20px sans-serif;\r\n line-height: 20px;\r\n text-align: center;\r\n color: transparent;\r\n}\r\n.card .selectable.selected {\r\n border-color: #4ad;\r\n}\r\n.card .selectable.selected .check:before {\r\n border-color: #4ad #4ad rgba(0, 0, 255, 0) rgba(255, 0, 0, 0);\r\n}\r\n.card .selectable.selected .check .checkmark {\r\n color: #fff;\r\n}\r\n.content {\r\n padding: 24px;\r\n}\r\n.content .title, .content .description {\r\n margin: 0;\r\n padding: 4px;\r\n}\r\n.column {\r\n float: left;\r\n width: 50%;\r\n}\r\n.column > .title {\r\n text-align: center;\r\n}\r\nbutton.card {\r\n display: block;\r\n cursor: pointer;\r\n width: 180px;\r\n margin: 20px auto;\r\n text-align: center;\r\n padding: 16px;\r\n border-color: transparent;\r\n border-radius: 10px;\r\n background: #4ad !important;\r\n color: #fff;\r\n text-transform: uppercase;\r\n font-weight: bold;\r\n outline: none;\r\n}\r\nbutton.card:focus {\r\n box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);\r\n}\r\n.title-description{\r\n line-height: 2;\r\n font-weight: 500;\r\n margin-left: 15px;\r\n margin-bottom: -27px;\r\n color: rgb(0, 0, 0);\r\n margin-top: 5px;\r\n}\r\n.text-description {\r\n line-height: 2.5;\r\n margin-left: 15px;\r\n margin-bottom: -25px;\r\n color: rgb(80, 80, 80);\r\n margin-top: 5px;\r\n}\r\n.warning-footer {\r\n padding: 10px;\r\n border: 0.5px solid #bcbdbd;\r\n background-color: lightyellow;\r\n display: flex;\r\n flex-direction: row;\r\n border-top: 0px;\r\n}\r\n#scroll-indicator {\r\n margin-right: 10px;\r\n margin-top: 5px;\r\n text-align: right;\r\n color: rgb(80, 80, 80);\r\n font-weight: 700;\r\n z-index: 0;\r\n position: relative;\r\n margin-bottom: 15px;\r\n}\r\n#scroll-indicator-background {\r\n z-index: 0;\r\n position: relative;\r\n background-color: rgba(250, 250, 250, 0.8);\r\n /* width: 210px; */\r\n height: 25px;\r\n float: right;\r\n margin-top: -26px;\r\n}\r\n/* This forces the toggle button to overlap with widget.Output (main widget). This may leak to other .widget-button if there are non-Lux widgets in the notebook. */\r\n/* .widget-button{ \r\n position: absolute;\r\n z-index: 999;\r\n border-radius: 5px;\r\n} */\r\n\r\n#first-arrow{\r\n margin-left: 25px;\r\n opacity: 50%;\r\n}\r\n\r\n#second-arrow{\r\n margin-left: -4px;\r\n}\r\n\r\n.highlight-intent{\r\n font-weight: 500;\r\n background: aliceblue;\r\n display: inline;\r\n /* display: inline-table;\r\n text-align: left; */\r\n}\r\n.highlight-descriptor{\r\n font-weight: 500;\r\n background: #fffee1;\r\n display: inline;\r\n /* display: inline-table;\r\n text-align: left; */\r\n}\r\n#intent_str {\r\n margin-top: 5px;\r\n font-weight: 500;\r\n max-width:100px\r\n}\r\n\r\n#warnBtn{\r\n color: #ffbc00;\r\n position: absolute;\r\n top: 5px;\r\n right: 88px;\r\n font-size: 20px;\r\n padding: 5px;\r\n}\r\n#warnBtn:hover{\r\n color:black;\r\n}\r\n.warnMsgText{\r\n color: rgb(80, 80, 80);\r\n margin-top: 5px;\r\n margin-left: 5px;\r\n}",""]),e.exports=t},function(e,t,n){"use strict";e.exports=function(e){var t=[];return t.toString=function(){return this.map((function(t){var n=function(e,t){var n=e[1]||"",r=e[3];if(!r)return n;if(t&&"function"==typeof btoa){var i=(a=r,s=btoa(unescape(encodeURIComponent(JSON.stringify(a)))),u="sourceMappingURL=data:application/json;charset=utf-8;base64,".concat(s),"/*# ".concat(u," */")),o=r.sources.map((function(e){return"/*# sourceURL=".concat(r.sourceRoot).concat(e," */")}));return[n].concat(o).concat([i]).join("\n")}var a,s,u;return[n].join("\n")}(t,e);return t[2]?"@media ".concat(t[2]," {").concat(n,"}"):n})).join("")},t.i=function(e,n){"string"==typeof e&&(e=[[null,e,""]]);for(var r=0;r=0)return 1;return 0}();var i=n&&window.Promise?function(e){var t=!1;return function(){t||(t=!0,window.Promise.resolve().then((function(){t=!1,e()})))}}:function(e){var t=!1;return function(){t||(t=!0,setTimeout((function(){t=!1,e()}),r))}};function o(e){return e&&"[object Function]"==={}.toString.call(e)}function a(e,t){if(1!==e.nodeType)return[];var n=e.ownerDocument.defaultView.getComputedStyle(e,null);return t?n[t]:n}function s(e){return"HTML"===e.nodeName?e:e.parentNode||e.host}function u(e){if(!e)return document.body;switch(e.nodeName){case"HTML":case"BODY":return e.ownerDocument.body;case"#document":return e.body}var t=a(e),n=t.overflow,r=t.overflowX,i=t.overflowY;return/(auto|scroll|overlay)/.test(n+i+r)?e:u(s(e))}function l(e){return e&&e.referenceNode?e.referenceNode:e}var c=n&&!(!window.MSInputMethodContext||!document.documentMode),f=n&&/MSIE 10/.test(navigator.userAgent);function d(e){return 11===e?c:10===e?f:c||f}function h(e){if(!e)return document.documentElement;for(var t=d(10)?document.body:null,n=e.offsetParent||null;n===t&&e.nextElementSibling;)n=(e=e.nextElementSibling).offsetParent;var r=n&&n.nodeName;return r&&"BODY"!==r&&"HTML"!==r?-1!==["TH","TD","TABLE"].indexOf(n.nodeName)&&"static"===a(n,"position")?h(n):n:e?e.ownerDocument.documentElement:document.documentElement}function p(e){return null!==e.parentNode?p(e.parentNode):e}function m(e,t){if(!(e&&e.nodeType&&t&&t.nodeType))return document.documentElement;var n=e.compareDocumentPosition(t)&Node.DOCUMENT_POSITION_FOLLOWING,r=n?e:t,i=n?t:e,o=document.createRange();o.setStart(r,0),o.setEnd(i,0);var a,s,u=o.commonAncestorContainer;if(e!==u&&t!==u||r.contains(i))return"BODY"===(s=(a=u).nodeName)||"HTML"!==s&&h(a.firstElementChild)!==a?h(u):u;var l=p(e);return l.host?m(l.host,t):m(e,p(t).host)}function g(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:"top",n="top"===t?"scrollTop":"scrollLeft",r=e.nodeName;if("BODY"===r||"HTML"===r){var i=e.ownerDocument.documentElement,o=e.ownerDocument.scrollingElement||i;return o[n]}return e[n]}function v(e,t){var n=arguments.length>2&&void 0!==arguments[2]&&arguments[2],r=g(t,"top"),i=g(t,"left"),o=n?-1:1;return e.top+=r*o,e.bottom+=r*o,e.left+=i*o,e.right+=i*o,e}function b(e,t){var n="x"===t?"Left":"Top",r="Left"===n?"Right":"Bottom";return parseFloat(e["border"+n+"Width"])+parseFloat(e["border"+r+"Width"])}function y(e,t,n,r){return Math.max(t["offset"+e],t["scroll"+e],n["client"+e],n["offset"+e],n["scroll"+e],d(10)?parseInt(n["offset"+e])+parseInt(r["margin"+("Height"===e?"Top":"Left")])+parseInt(r["margin"+("Height"===e?"Bottom":"Right")]):0)}function x(e){var t=e.body,n=e.documentElement,r=d(10)&&getComputedStyle(n);return{height:y("Height",t,n,r),width:y("Width",t,n,r)}}var w=function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")},_=function(){function e(e,t){for(var n=0;n2&&void 0!==arguments[2]&&arguments[2],r=d(10),i="HTML"===t.nodeName,o=j(e),s=j(t),l=u(e),c=a(t),f=parseFloat(c.borderTopWidth),h=parseFloat(c.borderLeftWidth);n&&i&&(s.top=Math.max(s.top,0),s.left=Math.max(s.left,0));var p=k({top:o.top-s.top-f,left:o.left-s.left-h,width:o.width,height:o.height});if(p.marginTop=0,p.marginLeft=0,!r&&i){var m=parseFloat(c.marginTop),g=parseFloat(c.marginLeft);p.top-=f-m,p.bottom-=f-m,p.left-=h-g,p.right-=h-g,p.marginTop=m,p.marginLeft=g}return(r&&!n?t.contains(l):t===l&&"BODY"!==l.nodeName)&&(p=v(p,t)),p}function C(e){var t=arguments.length>1&&void 0!==arguments[1]&&arguments[1],n=e.ownerDocument.documentElement,r=S(e,n),i=Math.max(n.clientWidth,window.innerWidth||0),o=Math.max(n.clientHeight,window.innerHeight||0),a=t?0:g(n),s=t?0:g(n,"left"),u={top:a-r.top+r.marginTop,left:s-r.left+r.marginLeft,width:i,height:o};return k(u)}function A(e){var t=e.nodeName;if("BODY"===t||"HTML"===t)return!1;if("fixed"===a(e,"position"))return!0;var n=s(e);return!!n&&A(n)}function T(e){if(!e||!e.parentElement||d())return document.documentElement;for(var t=e.parentElement;t&&"none"===a(t,"transform");)t=t.parentElement;return t||document.documentElement}function N(e,t,n,r){var i=arguments.length>4&&void 0!==arguments[4]&&arguments[4],o={top:0,left:0},a=i?T(e):m(e,l(t));if("viewport"===r)o=C(a,i);else{var c=void 0;"scrollParent"===r?"BODY"===(c=u(s(t))).nodeName&&(c=e.ownerDocument.documentElement):c="window"===r?e.ownerDocument.documentElement:r;var f=S(c,a,i);if("HTML"!==c.nodeName||A(a))o=f;else{var d=x(e.ownerDocument),h=d.height,p=d.width;o.top+=f.top-f.marginTop,o.bottom=h+f.top,o.left+=f.left-f.marginLeft,o.right=p+f.left}}var g="number"==typeof(n=n||0);return o.left+=g?n:n.left||0,o.top+=g?n:n.top||0,o.right-=g?n:n.right||0,o.bottom-=g?n:n.bottom||0,o}function D(e){return e.width*e.height}function M(e,t,n,r,i){var o=arguments.length>5&&void 0!==arguments[5]?arguments[5]:0;if(-1===e.indexOf("auto"))return e;var a=N(n,r,o,i),s={top:{width:a.width,height:t.top-a.top},right:{width:a.right-t.right,height:a.height},bottom:{width:a.width,height:a.bottom-t.bottom},left:{width:t.left-a.left,height:a.height}},u=Object.keys(s).map((function(e){return E({key:e},s[e],{area:D(s[e])})})).sort((function(e,t){return t.area-e.area})),l=u.filter((function(e){var t=e.width,r=e.height;return t>=n.clientWidth&&r>=n.clientHeight})),c=l.length>0?l[0].key:u[0].key,f=e.split("-")[1];return c+(f?"-"+f:"")}function F(e,t,n){var r=arguments.length>3&&void 0!==arguments[3]?arguments[3]:null,i=r?T(t):m(t,l(n));return S(n,i,r)}function P(e){var t=e.ownerDocument.defaultView.getComputedStyle(e),n=parseFloat(t.marginTop||0)+parseFloat(t.marginBottom||0),r=parseFloat(t.marginLeft||0)+parseFloat(t.marginRight||0);return{width:e.offsetWidth+r,height:e.offsetHeight+n}}function R(e){var t={left:"right",right:"left",bottom:"top",top:"bottom"};return e.replace(/left|right|bottom|top/g,(function(e){return t[e]}))}function z(e,t,n){n=n.split("-")[0];var r=P(e),i={width:r.width,height:r.height},o=-1!==["right","left"].indexOf(n),a=o?"top":"left",s=o?"left":"top",u=o?"height":"width",l=o?"width":"height";return i[a]=t[a]+t[u]/2-r[u]/2,i[s]=n===s?t[s]-r[l]:t[R(s)],i}function L(e,t){return Array.prototype.find?e.find(t):e.filter(t)[0]}function I(e,t,n){return(void 0===n?e:e.slice(0,function(e,t,n){if(Array.prototype.findIndex)return e.findIndex((function(e){return e[t]===n}));var r=L(e,(function(e){return e[t]===n}));return e.indexOf(r)}(e,"name",n))).forEach((function(e){e.function&&console.warn("`modifier.function` is deprecated, use `modifier.fn`!");var n=e.function||e.fn;e.enabled&&o(n)&&(t.offsets.popper=k(t.offsets.popper),t.offsets.reference=k(t.offsets.reference),t=n(t,e))})),t}function B(){if(!this.state.isDestroyed){var e={instance:this,styles:{},arrowStyles:{},attributes:{},flipped:!1,offsets:{}};e.offsets.reference=F(this.state,this.popper,this.reference,this.options.positionFixed),e.placement=M(this.options.placement,e.offsets.reference,this.popper,this.reference,this.options.modifiers.flip.boundariesElement,this.options.modifiers.flip.padding),e.originalPlacement=e.placement,e.positionFixed=this.options.positionFixed,e.offsets.popper=z(this.popper,e.offsets.reference,e.placement),e.offsets.popper.position=this.options.positionFixed?"fixed":"absolute",e=I(this.modifiers,e),this.state.isCreated?this.options.onUpdate(e):(this.state.isCreated=!0,this.options.onCreate(e))}}function U(e,t){return e.some((function(e){var n=e.name;return e.enabled&&n===t}))}function $(e){for(var t=[!1,"ms","Webkit","Moz","O"],n=e.charAt(0).toUpperCase()+e.slice(1),r=0;r1&&void 0!==arguments[1]&&arguments[1],n=Z.indexOf(e),r=Z.slice(n+1).concat(Z.slice(0,n));return t?r.reverse():r}var te="flip",ne="clockwise",re="counterclockwise";function ie(e,t,n,r){var i=[0,0],o=-1!==["right","left"].indexOf(r),a=e.split(/(\+|\-)/).map((function(e){return e.trim()})),s=a.indexOf(L(a,(function(e){return-1!==e.search(/,|\s/)})));a[s]&&-1===a[s].indexOf(",")&&console.warn("Offsets separated by white space(s) are deprecated, use a comma (,) instead.");var u=/\s*,\s*|\s+/,l=-1!==s?[a.slice(0,s).concat([a[s].split(u)[0]]),[a[s].split(u)[1]].concat(a.slice(s+1))]:[a];return(l=l.map((function(e,r){var i=(1===r?!o:o)?"height":"width",a=!1;return e.reduce((function(e,t){return""===e[e.length-1]&&-1!==["+","-"].indexOf(t)?(e[e.length-1]=t,a=!0,e):a?(e[e.length-1]+=t,a=!1,e):e.concat(t)}),[]).map((function(e){return function(e,t,n,r){var i=e.match(/((?:\-|\+)?\d*\.?\d*)(.*)/),o=+i[1],a=i[2];if(!o)return e;if(0===a.indexOf("%")){var s=void 0;switch(a){case"%p":s=n;break;case"%":case"%r":default:s=r}return k(s)[t]/100*o}if("vh"===a||"vw"===a){return("vh"===a?Math.max(document.documentElement.clientHeight,window.innerHeight||0):Math.max(document.documentElement.clientWidth,window.innerWidth||0))/100*o}return o}(e,i,t,n)}))}))).forEach((function(e,t){e.forEach((function(n,r){G(n)&&(i[t]+=n*("-"===e[r-1]?-1:1))}))})),i}var oe={placement:"bottom",positionFixed:!1,eventsEnabled:!0,removeOnDestroy:!1,onCreate:function(){},onUpdate:function(){},modifiers:{shift:{order:100,enabled:!0,fn:function(e){var t=e.placement,n=t.split("-")[0],r=t.split("-")[1];if(r){var i=e.offsets,o=i.reference,a=i.popper,s=-1!==["bottom","top"].indexOf(n),u=s?"left":"top",l=s?"width":"height",c={start:O({},u,o[u]),end:O({},u,o[u]+o[l]-a[l])};e.offsets.popper=E({},a,c[r])}return e}},offset:{order:200,enabled:!0,fn:function(e,t){var n=t.offset,r=e.placement,i=e.offsets,o=i.popper,a=i.reference,s=r.split("-")[0],u=void 0;return u=G(+n)?[+n,0]:ie(n,o,a,s),"left"===s?(o.top+=u[0],o.left-=u[1]):"right"===s?(o.top+=u[0],o.left+=u[1]):"top"===s?(o.left+=u[0],o.top-=u[1]):"bottom"===s&&(o.left+=u[0],o.top+=u[1]),e.popper=o,e},offset:0},preventOverflow:{order:300,enabled:!0,fn:function(e,t){var n=t.boundariesElement||h(e.instance.popper);e.instance.reference===n&&(n=h(n));var r=$("transform"),i=e.instance.popper.style,o=i.top,a=i.left,s=i[r];i.top="",i.left="",i[r]="";var u=N(e.instance.popper,e.instance.reference,t.padding,n,e.positionFixed);i.top=o,i.left=a,i[r]=s,t.boundaries=u;var l=t.priority,c=e.offsets.popper,f={primary:function(e){var n=c[e];return c[e]u[e]&&!t.escapeWithReference&&(r=Math.min(c[n],u[e]-("right"===e?c.width:c.height))),O({},n,r)}};return l.forEach((function(e){var t=-1!==["left","top"].indexOf(e)?"primary":"secondary";c=E({},c,f[t](e))})),e.offsets.popper=c,e},priority:["left","right","top","bottom"],padding:5,boundariesElement:"scrollParent"},keepTogether:{order:400,enabled:!0,fn:function(e){var t=e.offsets,n=t.popper,r=t.reference,i=e.placement.split("-")[0],o=Math.floor,a=-1!==["top","bottom"].indexOf(i),s=a?"right":"bottom",u=a?"left":"top",l=a?"width":"height";return n[s]o(r[s])&&(e.offsets.popper[u]=o(r[s])),e}},arrow:{order:500,enabled:!0,fn:function(e,t){var n;if(!J(e.instance.modifiers,"arrow","keepTogether"))return e;var r=t.element;if("string"==typeof r){if(!(r=e.instance.popper.querySelector(r)))return e}else if(!e.instance.popper.contains(r))return console.warn("WARNING: `arrow.element` must be child of its popper element!"),e;var i=e.placement.split("-")[0],o=e.offsets,s=o.popper,u=o.reference,l=-1!==["left","right"].indexOf(i),c=l?"height":"width",f=l?"Top":"Left",d=f.toLowerCase(),h=l?"left":"top",p=l?"bottom":"right",m=P(r)[c];u[p]-ms[p]&&(e.offsets.popper[d]+=u[d]+m-s[p]),e.offsets.popper=k(e.offsets.popper);var g=u[d]+u[c]/2-m/2,v=a(e.instance.popper),b=parseFloat(v["margin"+f]),y=parseFloat(v["border"+f+"Width"]),x=g-e.offsets.popper[d]-b-y;return x=Math.max(Math.min(s[c]-m,x),0),e.arrowElement=r,e.offsets.arrow=(O(n={},d,Math.round(x)),O(n,h,""),n),e},element:"[x-arrow]"},flip:{order:600,enabled:!0,fn:function(e,t){if(U(e.instance.modifiers,"inner"))return e;if(e.flipped&&e.placement===e.originalPlacement)return e;var n=N(e.instance.popper,e.instance.reference,t.padding,t.boundariesElement,e.positionFixed),r=e.placement.split("-")[0],i=R(r),o=e.placement.split("-")[1]||"",a=[];switch(t.behavior){case te:a=[r,i];break;case ne:a=ee(r);break;case re:a=ee(r,!0);break;default:a=t.behavior}return a.forEach((function(s,u){if(r!==s||a.length===u+1)return e;r=e.placement.split("-")[0],i=R(r);var l=e.offsets.popper,c=e.offsets.reference,f=Math.floor,d="left"===r&&f(l.right)>f(c.left)||"right"===r&&f(l.left)f(c.top)||"bottom"===r&&f(l.top)f(n.right),m=f(l.top)f(n.bottom),v="left"===r&&h||"right"===r&&p||"top"===r&&m||"bottom"===r&&g,b=-1!==["top","bottom"].indexOf(r),y=!!t.flipVariations&&(b&&"start"===o&&h||b&&"end"===o&&p||!b&&"start"===o&&m||!b&&"end"===o&&g),x=!!t.flipVariationsByContent&&(b&&"start"===o&&p||b&&"end"===o&&h||!b&&"start"===o&&g||!b&&"end"===o&&m),w=y||x;(d||v||w)&&(e.flipped=!0,(d||v)&&(r=a[u+1]),w&&(o=function(e){return"end"===e?"start":"start"===e?"end":e}(o)),e.placement=r+(o?"-"+o:""),e.offsets.popper=E({},e.offsets.popper,z(e.instance.popper,e.offsets.reference,e.placement)),e=I(e.instance.modifiers,e,"flip"))})),e},behavior:"flip",padding:5,boundariesElement:"viewport",flipVariations:!1,flipVariationsByContent:!1},inner:{order:700,enabled:!1,fn:function(e){var t=e.placement,n=t.split("-")[0],r=e.offsets,i=r.popper,o=r.reference,a=-1!==["left","right"].indexOf(n),s=-1===["top","left"].indexOf(n);return i[a?"left":"top"]=o[n]-(s?i[a?"width":"height"]:0),e.placement=R(t),e.offsets.popper=k(i),e}},hide:{order:800,enabled:!0,fn:function(e){if(!J(e.instance.modifiers,"hide","preventOverflow"))return e;var t=e.offsets.reference,n=L(e.instance.modifiers,(function(e){return"preventOverflow"===e.name})).boundaries;if(t.bottomn.right||t.top>n.bottom||t.right2&&void 0!==arguments[2]?arguments[2]:{};w(this,e),this.scheduleUpdate=function(){return requestAnimationFrame(r.update)},this.update=i(this.update.bind(this)),this.options=E({},e.Defaults,a),this.state={isDestroyed:!1,isCreated:!1,scrollParents:[]},this.reference=t&&t.jquery?t[0]:t,this.popper=n&&n.jquery?n[0]:n,this.options.modifiers={},Object.keys(E({},e.Defaults.modifiers,a.modifiers)).forEach((function(t){r.options.modifiers[t]=E({},e.Defaults.modifiers[t]||{},a.modifiers?a.modifiers[t]:{})})),this.modifiers=Object.keys(this.options.modifiers).map((function(e){return E({name:e},r.options.modifiers[e])})).sort((function(e,t){return e.order-t.order})),this.modifiers.forEach((function(e){e.enabled&&o(e.onLoad)&&e.onLoad(r.reference,r.popper,r.options,e,r.state)})),this.update();var s=this.options.eventsEnabled;s&&this.enableEventListeners(),this.state.eventsEnabled=s}return _(e,[{key:"update",value:function(){return B.call(this)}},{key:"destroy",value:function(){return q.call(this)}},{key:"enableEventListeners",value:function(){return V.call(this)}},{key:"disableEventListeners",value:function(){return Y.call(this)}}]),e}();ae.Utils=("undefined"!=typeof window?window:e).PopperUtils,ae.placements=Q,ae.Defaults=oe,t.a=ae}).call(this,n(40))},function(e,t,n){"use strict";function r(e){for(var t="https://material-ui.com/production-error/?code="+e,n=1;ne.length)&&(t=e.length);for(var n=0,r=new Array(t);n-1){var i=ge[e];if(!Array.isArray(i))return W+ee(i)in t&&H+i;if(!r)return!1;for(var o=0;ot?1:-1:e.length-t.length};return{onProcessStyle:function(t,n){if("style"!==n.type)return t;for(var r={},i=Object.keys(t).sort(e),o=0;o{this.setState({currentVisSelected:e},()=>{-1==e?this.onListChanged(-1,null):this.onListChanged(-2,null)})};for(var t=0;t0&&(n[i]=this.state.selectedRec[r])}else-1==this.state.currentVisSelected&&(n.currentVis=this.state.currentVis);this.setState({_selectedVisIdxs:n})}exportSelection(){h.dispatchLogEvent("exportBtnClick",this.state._selectedVisIdxs),this.setState(e=>({showAlert:!0})),setTimeout(()=>{this.setState(e=>({showAlert:!1}))},6e4),e.model.set("_selectedVisIdxs",this.state._selectedVisIdxs),e.model.save()}deleteSelection(){h.dispatchLogEvent("deleteBtnClick",this.state._selectedVisIdxs);var t=this.state._selectedVisIdxs;for(var n of this.state.recommendations)if(this.state._selectedVisIdxs[n.action]){let e=0;for(var r of this.state._selectedVisIdxs[n.action])n.vspec.splice(r-e,1),e++}this.setState({selectedRec:{},_selectedVisIdxs:{},deletedIndices:t});for(var i=0;is.createElement(c.Tab,{eventKey:e.action,title:e.action},s.createElement(f.default,{key:"no refresh",ref:this.chartComponents[t],title:e.action,description:e.description,multiple:!0,maxSelectable:10,onChange:this.onListChanged.bind(this,t),graphSpec:e.vspec,currentVisShow:!l.default.isEmpty(this.props.model.get("current_vis"))})))}render(){var e=Object.keys(this.state._selectedVisIdxs).length>0,t=1==Object.keys(this.state._selectedVisIdxs).length&&1==Object.values(this.state._selectedVisIdxs)[0].length;return 0==this.state.recommendations.length?s.createElement("div",{id:"oneViewWidgetContainer",style:{flexDirection:"column"}},s.createElement("div",{style:{display:"flex",flexDirection:"row"}},s.createElement(d.default,{intent:this.state.intent,currentVisSpec:this.state.currentVis,numRecommendations:0,onChange:this.handleCurrentVisSelect})),s.createElement(p.default,{buttonsEnabled:e,deleteSelection:this.deleteSelection,exportSelection:this.exportSelection,setIntent:this.setIntent,closeExportInfo:this.closeExportInfo,tabItems:this.state.tabItems,showAlert:this.state.showAlert,intentEnabled:t})):s.createElement("div",{id:"widgetContainer",style:{flexDirection:"column"}},s.createElement("div",{style:{display:"flex",flexDirection:"row"}},s.createElement(d.default,{intent:this.state.intent,currentVisSpec:this.state.currentVis,numRecommendations:this.state.recommendations.length,onChange:this.handleCurrentVisSelect}),s.createElement("div",{id:"tabBanner"},s.createElement("p",{className:"title-description",style:{visibility:l.default.isEmpty(this.state.currentVis)?"hidden":"visible"}},"You might be interested in..."),s.createElement(c.Tabs,{activeKey:this.state.activeTab,id:"tabBannerList",onSelect:this.handleSelect,className:l.default.isEmpty(this.state.currentVis)?"":"tabBannerPadding"},this.state.tabItems))),s.createElement(p.default,{buttonsEnabled:e,deleteSelection:this.deleteSelection,exportSelection:this.exportSelection,setIntent:this.setIntent,closeExportInfo:this.closeExportInfo,tabItems:this.state.tabItems,showAlert:this.state.showAlert,intentEnabled:t}),s.createElement(m.default,{message:this.state.message,openPanel:this.openPanel,closePanel:this.closePanel,openWarning:this.state.openWarning}))}}const n=document.createElement("div"),r=s.createElement(t,e);u.render(r,n),e.el.append(n),h.dispatchLogEvent("initWidget",""),$(".widget-button").on("click",(function(e){var t,n=null!=e.currentTarget.parentNode.parentNode.nextSibling.querySelector("#widgetContainer");null!=e.currentTarget.parentNode.parentNode.nextSibling.querySelector(".dataframe")?t="lux":n&&(t="pandas"),h.dispatchLogEvent("toggleBtnClick",t),e.stopImmediatePropagation()}))}}t.LuxWidgetView=v},function(t,n){t.exports=e},function(e,t,n){var r=n(87);"string"==typeof(r=r.__esModule?r.default:r)&&(r=[[e.i,r,""]]);var i={insert:"head",singleton:!1};n(89)(r,i);r.locals&&(e.exports=r.locals)},function(e,t,n){(t=n(88)(!1)).push([e.i,"#widgetContainer{\n /* height: 315px; */\n width:100%;\n display:inline-flex;\n}\n\n#oneViewWidgetContainer {\n height:200px;\n width:100%;\n display:inline-flex;\n}\ninput[type=text], select {\n width: 100%;\n padding: 12px 20px;\n margin: 8px 0;\n display: inline-block;\n border: 1px solid #ccc;\n border-radius: 4px;\n box-sizing: border-box;\n}\n#mult-graph-container{\n display: inline-flex;\n}\n.recommendationStaticContentOuter{\n scroll-snap-align: start;\n /* border: 0.5px solid #bcbdbd; */\n overflow-x: auto;\n overflow-y: hidden;\n display: inline-block;\n text-align: left;\n /* padding-left: 20px; */\n /* padding-top: 10px; */\n /* height: 100%; */\n box-sizing: border-box;\n width: 100%;\n position: relative;\n}\n.recommendationContentOuter{\n /* overflow: scroll; */\n /* Prevents unneccesary x-scroll for specified facet */\n /* width: 100%; */\n /*height: 225px;*/\n display: flex;\n /* display: inline-block;*/\n margin-left: 10px;\n text-align: left;\n}\n.vega-embed {\n position: relative;\n display: inline-block;\n /* padding-right: 38px; */\n flex: 1 0 auto;\n padding-right: 10px !important;\n}\n/* .vega-embed:hover{\n border: solid 1px;\n border-color: rgba(0, 0, 0, 0.4);\n box-shadow: 5px 5px 5px 0px rgba(0,0,0,0.5);\n cursor: pointer;\n} */\n.vega-embed:checked{\n border: solid 1px;\n border-color: blue;\n}\n.recommendationContentInner{\n /*width: auto;\n max-width: 150%;*/\n /*display: inline-block;*/\n /*margin-left: 8px;*/\n text-align: left;\n display: flex;\n flex-wrap: nowrap;\n align-items: flex-end;\n /* overflow-x: auto; */\n overflow-x: initial;\n padding-right: 50px;\n /*height: 280px;*/\n /* width: max-content;\n overflow-x: auto; */\n /* height: 100px; */\n}\n\n.toolDiv{\n position: relative;\n top: -20px;\n left: -5px;\n}\n.fa {\n color:gray;\n}\n.fa:hover{\n color:black;\n}\n.graph-container{\n height: 250px;\n max-height: 270px;\n margin: 10px 0px 5px 5px;\n padding: 0px 0px 0px 0px;\n}\n#mainVizTitle{\n font-size: 20px;\n display: inline-block;\n left: 10%;\n top: 0px;\n position: absolute;\n}\n#mainVizContainer{\n padding: 10px 0px 0px 0px;\n border: 0.5px solid #bcbdbd;\n overflow-y: auto;\n}\n\n#mainVizInnerContainer{\n margin-top: 50px;\n}\n\n#placeHolderVizContainer{\n min-height: 100%;\n min-width: 1px;\n}\n#tabBanner{\n border: 0.5px solid #bcbdbd;\n width: auto;\n overflow: hidden;\n flex: 1;\n}\n#exportBtn{\n position: absolute;\n /* bottom: 90%; */\n /* left: 97%; */\n top: 5px;\n right: 5px;\n font-size: 20px;\n padding: 5px;\n}\n\n#deleteBtn{\n position: absolute;\n top: 5px;\n right: 33px;\n font-size: 20px;\n padding: 5px;\n}\n\n#intentBtn{\n position: absolute;\n top: 5px;\n right: 59px;\n font-size: 20px;\n padding: 5px;\n}\n\n#alertBox{\n position: absolute;\n left: 23%;\n width: 54%;\n bottom: 6%;\n padding: 5px 30px 5px 10px;\n}\n\n\n/* canvas{\n width: 229px;\n height: 245px;\n} */\n/* Override .fade default to show tab*/\n.fade {\n opacity:1;\n}\n/* Copied from bootstrap.css */\n.nav {\n display: -ms-flexbox;\n display: flex;\n -ms-flex-wrap: wrap;\n flex-wrap: wrap;\n padding-left: 0;\n margin-bottom: 0;\n list-style: none;\n}\n\n.nav-link {\n display: block;\n padding: 0.5rem 1rem;\n}\n\n.nav-link:hover, .nav-link:focus {\n text-decoration: none;\n}\n\n.nav-link.disabled {\n color: #6c757d;\n pointer-events: none;\n cursor: default;\n}\n\n.nav-tabs {\n border-bottom: 1px solid #dee2e6;\n}\n\n.tabBannerPadding {\n padding-left: 210px;\n}\n\n.nav-tabs .nav-item {\n margin-bottom: -1px;\n}\n\n.nav-tabs .nav-link {\n border: 1px solid transparent;\n border-top-left-radius: 0.25rem;\n border-top-right-radius: 0.25rem;\n}\n\n.nav-tabs .nav-link:hover, .nav-tabs .nav-link:focus {\n border-color: #e9ecef #e9ecef #dee2e6;\n}\n\n.nav-tabs .nav-link.disabled {\n color: #6c757d;\n background-color: transparent;\n border-color: transparent;\n}\n\n.nav-tabs .nav-link.active,\n.nav-tabs .nav-item.show .nav-link {\n color: #495057;\n background-color: #fff;\n border-color: #dee2e6 #dee2e6 #fff;\n font-weight: 500;\n}\n\n.nav-tabs .dropdown-menu {\n margin-top: -1px;\n border-top-left-radius: 0;\n border-top-right-radius: 0;\n}\n\n.nav-pills .nav-link {\n border-radius: 0.25rem;\n}\n\n.nav-pills .nav-link.active,\n.nav-pills .show > .nav-link {\n color: #fff;\n background-color: #007bff;\n}\n\n.nav-fill .nav-item {\n -ms-flex: 1 1 auto;\n flex: 1 1 auto;\n text-align: center;\n}\n\n.nav-justified .nav-item {\n -ms-flex-preferred-size: 0;\n flex-basis: 0;\n -ms-flex-positive: 1;\n flex-grow: 1;\n text-align: center;\n}\n\n.tab-content > .tab-pane {\n display: none;\n}\n\n.tab-content > .active {\n display: block;\n}\n/* Selectable Card React Component CSS */\n/* Card */\n.card {\n transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);\n box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);\n background: #fff;\n margin: 20px 10px;\n cursor: pointer;\n}\n.card:hover {\n box-shadow: 0 14px 28px rgba(0, 0, 0, 0.25), 0 10px 10px rgba(0, 0, 0, 0.22);\n}\n/* Selectable */\n.card .selectable {\n position: relative;\n transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);\n border: 4px solid transparent;\n}\n.card .selectable .check {\n transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);\n position: absolute;\n top: 0;\n right: 0;\n z-index: 10;\n width: 20px;\n height: 20px;\n}\n.card .selectable .check:before {\n transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);\n content: '';\n border: 20px solid;\n border-color: transparent;\n position: absolute;\n top: 0;\n right: 0;\n z-index: -1;\n}\n.card .selectable .check .checkmark {\n display: block;\n font: 20px sans-serif;\n line-height: 20px;\n text-align: center;\n color: transparent;\n}\n.card .selectable.selected {\n border-color: #4ad;\n}\n.card .selectable.selected .check:before {\n border-color: #4ad #4ad rgba(0, 0, 255, 0) rgba(255, 0, 0, 0);\n}\n.card .selectable.selected .check .checkmark {\n color: #fff;\n}\n.content {\n padding: 24px;\n}\n.content .title, .content .description {\n margin: 0;\n padding: 4px;\n}\n.column {\n float: left;\n width: 50%;\n}\n.column > .title {\n text-align: center;\n}\nbutton.card {\n display: block;\n cursor: pointer;\n width: 180px;\n margin: 20px auto;\n text-align: center;\n padding: 16px;\n border-color: transparent;\n border-radius: 10px;\n background: #4ad !important;\n color: #fff;\n text-transform: uppercase;\n font-weight: bold;\n outline: none;\n}\nbutton.card:focus {\n box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);\n}\n.title-description{\n line-height: 2;\n font-weight: 500;\n margin-left: 15px;\n margin-bottom: -27px;\n color: rgb(0, 0, 0);\n margin-top: 5px;\n}\n.text-description {\n line-height: 2.5;\n margin-left: 15px;\n margin-bottom: -25px;\n color: rgb(80, 80, 80);\n margin-top: 5px;\n}\n.warning-footer {\n padding: 10px;\n border: 0.5px solid #bcbdbd;\n background-color: lightyellow;\n display: flex;\n flex-direction: row;\n border-top: 0px;\n}\n#scroll-indicator {\n margin-right: 10px;\n margin-top: 5px;\n text-align: right;\n color: rgb(80, 80, 80);\n font-weight: 700;\n z-index: 0;\n position: relative;\n margin-bottom: 15px;\n}\n#scroll-indicator-background {\n z-index: 0;\n position: relative;\n background-color: rgba(250, 250, 250, 0.8);\n /* width: 210px; */\n height: 25px;\n float: right;\n margin-top: -26px;\n}\n/* This forces the toggle button to overlap with widget.Output (main widget). This may leak to other .widget-button if there are non-Lux widgets in the notebook. */\n/* .widget-button{ \n position: absolute;\n z-index: 999;\n border-radius: 5px;\n} */\n\n#first-arrow{\n margin-left: 25px;\n opacity: 50%;\n}\n\n#second-arrow{\n margin-left: -4px;\n}\n\n.highlight-intent{\n font-weight: 500;\n background: aliceblue;\n display: inline;\n /* display: inline-table;\n text-align: left; */\n}\n.highlight-descriptor{\n font-weight: 500;\n background: #fffee1;\n display: inline;\n /* display: inline-table;\n text-align: left; */\n}\n#intent_str {\n margin-top: 5px;\n font-weight: 500;\n max-width:100px\n}\n\n#warnBtn{\n color: #ffbc00;\n position: absolute;\n top: 5px;\n right: 88px;\n font-size: 20px;\n padding: 5px;\n}\n#warnBtn:hover{\n color:black;\n}\n.warnMsgText{\n color: rgb(80, 80, 80);\n margin-top: 5px;\n margin-left: 5px;\n}",""]),e.exports=t},function(e,t,n){"use strict";e.exports=function(e){var t=[];return t.toString=function(){return this.map((function(t){var n=function(e,t){var n=e[1]||"",r=e[3];if(!r)return n;if(t&&"function"==typeof btoa){var i=(a=r,s=btoa(unescape(encodeURIComponent(JSON.stringify(a)))),u="sourceMappingURL=data:application/json;charset=utf-8;base64,".concat(s),"/*# ".concat(u," */")),o=r.sources.map((function(e){return"/*# sourceURL=".concat(r.sourceRoot).concat(e," */")}));return[n].concat(o).concat([i]).join("\n")}var a,s,u;return[n].join("\n")}(t,e);return t[2]?"@media ".concat(t[2]," {").concat(n,"}"):n})).join("")},t.i=function(e,n){"string"==typeof e&&(e=[[null,e,""]]);for(var r=0;r i) {\n push();\n } else {\n i = j + 1;\n }\n } else if (c === '[') {\n if (j > i) push();\n b = i = j + 1;\n } else if (c === ']') {\n if (!b) error('Access path missing open bracket: ' + p);\n if (b > 0) push();\n b = 0;\n i = j + 1;\n }\n }\n\n if (b) error('Access path missing closing bracket: ' + p);\n if (q) error('Access path missing closing quote: ' + p);\n\n if (j > i) {\n j++;\n push();\n }\n\n return path;\n}\n","export default Array.isArray;\n","export default function(_) {\n return _ === Object(_);\n}\n","export default function(_) {\n return typeof _ === 'string';\n}\n","import isArray from './isArray';\nimport isObject from './isObject';\nimport isString from './isString';\n\nexport default function $(x) {\n return isArray(x) ? '[' + x.map($) + ']'\n : isObject(x) || isString(x) ?\n // Output valid JSON and JS source strings.\n // See http://timelessrepo.com/json-isnt-a-javascript-subset\n JSON.stringify(x).replace('\\u2028','\\\\u2028').replace('\\u2029', '\\\\u2029')\n : x;\n}\n","import accessor from './accessor';\nimport splitAccessPath from './splitAccessPath';\nimport stringValue from './stringValue';\n\nexport default function(field, name) {\n var path = splitAccessPath(field),\n code = 'return _[' + path.map(stringValue).join('][') + '];';\n\n return accessor(\n Function('_', code),\n [(field = path.length===1 ? path[0] : field)],\n name || field\n );\n}\n","import accessor from './accessor';\nimport field from './field';\n\nvar empty = [];\n\nexport var id = field('id');\n\nexport var identity = accessor(function(_) { return _; }, empty, 'identity');\n\nexport var zero = accessor(function() { return 0; }, empty, 'zero');\n\nexport var one = accessor(function() { return 1; }, empty, 'one');\n\nexport var truthy = accessor(function() { return true; }, empty, 'true');\n\nexport var falsy = accessor(function() { return false; }, empty, 'false');\n","function log(method, level, input) {\n var args = [level].concat([].slice.call(input));\n console[method].apply(console, args); // eslint-disable-line no-console\n}\n\nexport var None = 0;\nexport var Error = 1;\nexport var Warn = 2;\nexport var Info = 3;\nexport var Debug = 4;\n\nexport default function(_, method) {\n var level = _ || None;\n return {\n level: function(_) {\n if (arguments.length) {\n level = +_;\n return this;\n } else {\n return level;\n }\n },\n error: function() {\n if (level >= Error) log(method || 'error', 'ERROR', arguments);\n return this;\n },\n warn: function() {\n if (level >= Warn) log(method || 'warn', 'WARN', arguments);\n return this;\n },\n info: function() {\n if (level >= Info) log(method || 'log', 'INFO', arguments);\n return this;\n },\n debug: function() {\n if (level >= Debug) log(method || 'log', 'DEBUG', arguments);\n return this;\n }\n }\n}\n","import isArray from './isArray';\nimport isObject from './isObject';\n\nexport function mergeConfig(...configs) {\n return configs.reduce((out, source) => {\n for (var key in source) {\n if (key === 'signals') {\n // for signals, we merge the signals arrays\n // source signals take precedence over\n // existing signals with the same name\n out.signals = mergeNamed(out.signals, source.signals);\n } else {\n // otherwise, merge objects subject to recursion constraints\n // for legend block, recurse for the layout entry only\n // for style block, recurse for all properties\n // otherwise, no recursion: objects overwrite, no merging\n var r = key === 'legend' ? {'layout': 1}\n : key === 'style' ? true\n : null;\n writeConfig(out, key, source[key], r);\n }\n }\n return out;\n }, {});\n}\n\nexport function writeConfig(output, key, value, recurse) {\n var k, o;\n if (isObject(value) && !isArray(value)) {\n o = isObject(output[key]) ? output[key] : (output[key] = {});\n for (k in value) {\n if (recurse && (recurse === true || recurse[k])) {\n writeConfig(o, k, value[k]);\n } else {\n o[k] = value[k];\n }\n }\n } else {\n output[key] = value;\n }\n}\n\nfunction mergeNamed(a, b) {\n if (a == null) return b;\n\n const map = {}, out = [];\n\n function add(_) {\n if (!map[_.name]) {\n map[_.name] = 1;\n out.push(_);\n }\n }\n\n b.forEach(add);\n a.forEach(add);\n return out;\n}\n","export default function(array) {\n return array[array.length - 1];\n}\n","export default function(_) {\n return _ == null || _ === '' ? null : +_;\n}\n","import {identity} from './accessors';\nimport peek from './peek';\nimport toNumber from './toNumber';\n\nfunction exp(sign) {\n return function(x) { return sign * Math.exp(x); };\n}\n\nfunction log(sign) {\n return function(x) { return Math.log(sign * x); };\n}\n\nfunction symlog(c) {\n return function(x) { return Math.sign(x) * Math.log1p(Math.abs(x / c)); };\n}\n\nfunction symexp(c) {\n return function(x) { return Math.sign(x) * Math.expm1(Math.abs(x)) * c; };\n}\n\nfunction pow(exponent) {\n return function(x) {\n return x < 0 ? -Math.pow(-x, exponent) : Math.pow(x, exponent);\n };\n}\n\nfunction pan(domain, delta, lift, ground) {\n var d0 = lift(domain[0]),\n d1 = lift(peek(domain)),\n dd = (d1 - d0) * delta;\n\n return [\n ground(d0 - dd),\n ground(d1 - dd)\n ];\n}\n\nexport function panLinear(domain, delta) {\n return pan(domain, delta, toNumber, identity);\n}\n\nexport function panLog(domain, delta) {\n var sign = Math.sign(domain[0]);\n return pan(domain, delta, log(sign), exp(sign));\n}\n\nexport function panPow(domain, delta, exponent) {\n return pan(domain, delta, pow(exponent), pow(1/exponent));\n}\n\nexport function panSymlog(domain, delta, constant) {\n return pan(domain, delta, symlog(constant), symexp(constant));\n}\n\nfunction zoom(domain, anchor, scale, lift, ground) {\n var d0 = lift(domain[0]),\n d1 = lift(peek(domain)),\n da = anchor != null ? lift(anchor) : (d0 + d1) / 2;\n\n return [\n ground(da + (d0 - da) * scale),\n ground(da + (d1 - da) * scale)\n ];\n}\n\nexport function zoomLinear(domain, anchor, scale) {\n return zoom(domain, anchor, scale, toNumber, identity);\n}\n\nexport function zoomLog(domain, anchor, scale) {\n var sign = Math.sign(domain[0]);\n return zoom(domain, anchor, scale, log(sign), exp(sign));\n}\n\nexport function zoomPow(domain, anchor, scale, exponent) {\n return zoom(domain, anchor, scale, pow(exponent), pow(1/exponent));\n}\n\nexport function zoomSymlog(domain, anchor, scale, constant) {\n return zoom(domain, anchor, scale, symlog(constant), symexp(constant));\n}\n","export function quarter(date) {\n return 1 + ~~(new Date(date).getMonth() / 3);\n}\n\nexport function utcquarter(date) {\n return 1 + ~~(new Date(date).getUTCMonth() / 3);\n}\n","import isArray from './isArray';\n\nexport default function(_) {\n return _ != null ? (isArray(_) ? _ : [_]) : [];\n}\n","/**\n * Span-preserving range clamp. If the span of the input range is less\n * than (max - min) and an endpoint exceeds either the min or max value,\n * the range is translated such that the span is preserved and one\n * endpoint touches the boundary of the min/max range.\n * If the span exceeds (max - min), the range [min, max] is returned.\n */\nexport default function(range, min, max) {\n var lo = range[0],\n hi = range[1],\n span;\n\n if (hi < lo) {\n span = hi;\n hi = lo;\n lo = span;\n }\n span = hi - lo;\n\n return span >= (max - min)\n ? [min, max]\n : [\n (lo = Math.min(Math.max(lo, min), max - span)),\n lo + span\n ];\n}\n","export default function(_) {\n return typeof _ === 'function';\n}\n","import {default as accessor, accessorFields} from './accessor';\nimport array from './array';\nimport isFunction from './isFunction';\nimport splitAccessPath from './splitAccessPath';\nimport stringValue from './stringValue';\n\nexport default function(fields, orders) {\n var idx = [],\n cmp = (fields = array(fields)).map(function(f, i) {\n if (f == null) {\n return null;\n } else {\n idx.push(i);\n return isFunction(f) ? f\n : splitAccessPath(f).map(stringValue).join('][');\n }\n }),\n n = idx.length - 1,\n ord = array(orders),\n code = 'var u,v;return ',\n i, j, f, u, v, d, t, lt, gt;\n\n if (n < 0) return null;\n\n for (j=0; j<=n; ++j) {\n i = idx[j];\n f = cmp[i];\n\n if (isFunction(f)) {\n d = 'f' + i;\n u = '(u=this.' + d + '(a))';\n v = '(v=this.' + d + '(b))';\n (t = t || {})[d] = f;\n } else {\n u = '(u=a['+f+'])';\n v = '(v=b['+f+'])';\n }\n\n d = '((v=v instanceof Date?+v:v),(u=u instanceof Date?+u:u))';\n\n if (ord[i] !== 'descending') {\n gt = 1;\n lt = -1;\n } else {\n gt = -1;\n lt = 1;\n }\n\n code += '(' + u+'<'+v+'||u==null)&&v!=null?' + lt\n + ':(u>v||v==null)&&u!=null?' + gt\n + ':'+d+'!==u&&v===v?' + lt\n + ':v!==v&&u===u?' + gt\n + (i < n ? ':' : ':0');\n }\n\n f = Function('a', 'b', code + ';');\n if (t) f = f.bind(t);\n\n fields = fields.reduce(function(map, field) {\n if (isFunction(field)) {\n (accessorFields(field) || []).forEach(function(_) { map[_] = 1; });\n } else if (field != null) {\n map[field + ''] = 1;\n }\n return map;\n }, {});\n\n return accessor(f, Object.keys(fields));\n}\n","import isFunction from './isFunction';\n\nexport default function(_) {\n return isFunction(_) ? _ : function() { return _; };\n}\n","export default function(delay, handler) {\n var tid, evt;\n\n function callback() {\n handler(evt);\n tid = evt = null;\n }\n\n return function(e) {\n evt = e;\n if (tid) clearTimeout(tid);\n tid = setTimeout(callback, delay);\n };\n}\n","export default function(_) {\n for (var x, k, i=1, len=arguments.length; i max) max = v;\n }\n }\n } else {\n // find first valid value\n for (v = f(array[i]); i < n && (v == null || v !== v); v = f(array[++i]));\n min = max = v;\n\n // visit all other values\n for (; i max) max = v;\n }\n }\n }\n }\n\n return [min, max];\n}\n","export default function(array, f) {\n var i = -1,\n n = array.length,\n a, b, c, u, v;\n\n if (f == null) {\n while (++i < n) {\n b = array[i];\n if (b != null && b >= b) {\n a = c = b;\n break;\n }\n }\n if (i === n) return [-1, -1];\n u = v = i;\n while (++i < n) {\n b = array[i];\n if (b != null) {\n if (a > b) {\n a = b;\n u = i;\n }\n if (c < b) {\n c = b;\n v = i;\n }\n }\n }\n } else {\n while (++i < n) {\n b = f(array[i], i, array);\n if (b != null && b >= b) {\n a = c = b;\n break;\n }\n }\n if (i === n) return [-1, -1];\n u = v = i;\n while (++i < n) {\n b = f(array[i], i, array);\n if (b != null) {\n if (a > b) {\n a = b;\n u = i;\n }\n if (c < b) {\n c = b;\n v = i;\n }\n }\n }\n }\n\n return [u, v];\n}\n","const hop = Object.prototype.hasOwnProperty;\n\nexport default function(object, property) {\n return hop.call(object, property);\n}\n","import hasOwnProperty from './hasOwnProperty';\n\nvar NULL = {};\n\nexport default function(input) {\n var obj = {},\n map,\n test;\n\n function has(key) {\n return hasOwnProperty(obj, key) && obj[key] !== NULL;\n }\n\n map = {\n size: 0,\n empty: 0,\n object: obj,\n has: has,\n get: function(key) {\n return has(key) ? obj[key] : undefined;\n },\n set: function(key, value) {\n if (!has(key)) {\n ++map.size;\n if (obj[key] === NULL) --map.empty;\n }\n obj[key] = value;\n return this;\n },\n delete: function(key) {\n if (has(key)) {\n --map.size;\n ++map.empty;\n obj[key] = NULL;\n }\n return this;\n },\n clear: function() {\n map.size = map.empty = 0;\n map.object = obj = {};\n },\n test: function(_) {\n if (arguments.length) {\n test = _;\n return map;\n } else {\n return test;\n }\n },\n clean: function() {\n var next = {},\n size = 0,\n key, value;\n for (key in obj) {\n value = obj[key];\n if (value !== NULL && (!test || !test(value))) {\n next[key] = value;\n ++size;\n }\n }\n map.size = size;\n map.empty = 0;\n map.object = (obj = next);\n }\n };\n\n if (input) Object.keys(input).forEach(function(key) {\n map.set(key, input[key]);\n });\n\n return map;\n}\n","import peek from './peek';\n\nexport default function(range, value, threshold, left, right, center) {\n if (!threshold && threshold !== 0) return center;\n\n var a = range[0],\n b = peek(range),\n t = +threshold,\n l, r;\n\n // swap endpoints if range is reversed\n if (b < a) {\n l = a; a = b; b = l;\n }\n\n // compare value to endpoints\n l = Math.abs(value - a);\n r = Math.abs(b - value);\n\n // adjust if value is within threshold distance of endpoint\n return l < r && l <= t ? left : r <= t ? right : center;\n}\n","export default function(child, parent) {\n var proto = (child.prototype = Object.create(parent.prototype));\n proto.constructor = child;\n return proto;\n}\n","/**\n * Predicate that returns true if the value lies within the span\n * of the given range. The left and right flags control the use\n * of inclusive (true) or exclusive (false) comparisons.\n */\nexport default function(value, range, left, right) {\n var r0 = range[0], r1 = range[range.length-1], t;\n if (r0 > r1) {\n t = r0;\n r0 = r1;\n r1 = t;\n }\n left = left === undefined || left;\n right = right === undefined || right;\n\n return (left ? r0 <= value : r0 < value) &&\n (right ? value <= r1 : value < r1);\n}\n","export default function(_) {\n return typeof _ === 'boolean';\n}\n","export default function(_) {\n return Object.prototype.toString.call(_) === '[object Date]';\n}\n","export default function(_) {\n return typeof _ === 'number';\n}\n","export default function(_) {\n return Object.prototype.toString.call(_) === '[object RegExp]';\n}\n","import accessor from './accessor';\nimport array from './array';\nimport splitAccessPath from './splitAccessPath';\nimport stringValue from './stringValue';\n\nexport default function(fields, flat) {\n if (fields) {\n fields = flat\n ? array(fields).map(function(f) { return f.replace(/\\\\(.)/g, '$1'); })\n : array(fields);\n }\n\n var fn = !(fields && fields.length)\n ? function() { return ''; }\n : Function('_', 'return \\'\\'+' +\n fields.map(function(f) {\n return '_[' + (flat\n ? stringValue(f)\n : splitAccessPath(f).map(stringValue).join('][')\n ) + ']';\n }).join('+\\'|\\'+') + ';');\n\n return accessor(fn, fields, 'key');\n}\n","import peek from './peek';\n\nexport default function(array, frac) {\n const lo = array[0],\n hi = peek(array),\n f = +frac;\n return !f ? lo : f === 1 ? hi : lo + f * (hi - lo);\n}\n","export default function(compare, array0, array1, output) {\n var n0 = array0.length,\n n1 = array1.length;\n\n if (!n1) return array0;\n if (!n0) return array1;\n\n var merged = output || new array0.constructor(n0 + n1),\n i0 = 0, i1 = 0, i = 0;\n\n for (; i0 0\n ? array1[i1++]\n : array0[i0++];\n }\n\n for (; i0= 0) s += str;\n return s;\n}\n","import repeat from './repeat';\n\nexport default function(str, length, padchar, align) {\n var c = padchar || ' ',\n s = str + '',\n n = length - s.length;\n\n return n <= 0 ? s\n : align === 'left' ? repeat(c, n) + s\n : align === 'center' ? repeat(c, ~~(n/2)) + s + repeat(c, Math.ceil(n/2))\n : s + repeat(c, n);\n}\n","import peek from './peek';\n\n/**\n * Return the numerical span of an array: the difference between\n * the last and first values.\n */\nexport default function(array) {\n return array && (peek(array) - array[0]) || 0;\n}\n","export default function(_) {\n return _ == null || _ === '' ? null : !_ || _ === 'false' || _ === '0' ? false : !!_;\n}\n","import isDate from './isDate';\nimport isNumber from './isNumber';\n\nfunction defaultParser(_) {\n return isNumber(_) ? _ : isDate(_) ? _ : Date.parse(_);\n}\n\nexport default function(_, parser) {\n parser = parser || defaultParser;\n return _ == null || _ === '' ? null : parser(_);\n}\n","export default function(_) {\n return _ == null || _ === '' ? null : _ + '';\n}\n","export default function(_) {\n for (var s={}, i=0, n=_.length; i= 0) continue;\n target[key] = source[key];\n }\n\n return target;\n}","/*!\n Copyright (c) 2017 Jed Watson.\n Licensed under the MIT License (MIT), see\n http://jedwatson.github.io/classnames\n*/\n/* global define */\n\n(function () {\n\t'use strict';\n\n\tvar hasOwn = {}.hasOwnProperty;\n\n\tfunction classNames () {\n\t\tvar classes = [];\n\n\t\tfor (var i = 0; i < arguments.length; i++) {\n\t\t\tvar arg = arguments[i];\n\t\t\tif (!arg) continue;\n\n\t\t\tvar argType = typeof arg;\n\n\t\t\tif (argType === 'string' || argType === 'number') {\n\t\t\t\tclasses.push(arg);\n\t\t\t} else if (Array.isArray(arg) && arg.length) {\n\t\t\t\tvar inner = classNames.apply(null, arg);\n\t\t\t\tif (inner) {\n\t\t\t\t\tclasses.push(inner);\n\t\t\t\t}\n\t\t\t} else if (argType === 'object') {\n\t\t\t\tfor (var key in arg) {\n\t\t\t\t\tif (hasOwn.call(arg, key) && arg[key]) {\n\t\t\t\t\t\tclasses.push(key);\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn classes.join(' ');\n\t}\n\n\tif (typeof module !== 'undefined' && module.exports) {\n\t\tclassNames.default = classNames;\n\t\tmodule.exports = classNames;\n\t} else if (typeof define === 'function' && typeof define.amd === 'object' && define.amd) {\n\t\t// register as 'classnames', consistent with npm package name\n\t\tdefine('classnames', [], function () {\n\t\t\treturn classNames;\n\t\t});\n\t} else {\n\t\twindow.classNames = classNames;\n\t}\n}());\n","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\nif (process.env.NODE_ENV !== 'production') {\n var ReactIs = require('react-is');\n\n // By explicitly using `prop-types` you are opting into new development behavior.\n // http://fb.me/prop-types-in-prod\n var throwOnDirectAccess = true;\n module.exports = require('./factoryWithTypeCheckers')(ReactIs.isElement, throwOnDirectAccess);\n} else {\n // By explicitly using `prop-types` you are opting into new production behavior.\n // http://fb.me/prop-types-in-prod\n module.exports = require('./factoryWithThrowingShims')();\n}\n","import objectWithoutPropertiesLoose from \"./objectWithoutPropertiesLoose\";\nexport default function _objectWithoutProperties(source, excluded) {\n if (source == null) return {};\n var target = objectWithoutPropertiesLoose(source, excluded);\n var key, i;\n\n if (Object.getOwnPropertySymbols) {\n var sourceSymbolKeys = Object.getOwnPropertySymbols(source);\n\n for (i = 0; i < sourceSymbolKeys.length; i++) {\n key = sourceSymbolKeys[i];\n if (excluded.indexOf(key) >= 0) continue;\n if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue;\n target[key] = source[key];\n }\n }\n\n return target;\n}","export default function _inheritsLoose(subClass, superClass) {\n subClass.prototype = Object.create(superClass.prototype);\n subClass.prototype.constructor = subClass;\n subClass.__proto__ = superClass;\n}","'use strict';\n\nfunction checkDCE() {\n /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */\n if (\n typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === 'undefined' ||\n typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.checkDCE !== 'function'\n ) {\n return;\n }\n if (process.env.NODE_ENV !== 'production') {\n // This branch is unreachable because this function is only called\n // in production, but the condition is true only in development.\n // Therefore if the branch is still here, dead code elimination wasn't\n // properly applied.\n // Don't change the message. React DevTools relies on it. Also make sure\n // this message doesn't occur elsewhere in this function, or it will cause\n // a false positive.\n throw new Error('^_^');\n }\n try {\n // Verify that the code above has been dead code eliminated (DCE'd).\n __REACT_DEVTOOLS_GLOBAL_HOOK__.checkDCE(checkDCE);\n } catch (err) {\n // DevTools shouldn't crash React, no matter what.\n // We should still report in case we break this code.\n console.error(err);\n }\n}\n\nif (process.env.NODE_ENV === 'production') {\n // DCE check should happen before ReactDOM bundle executes so that\n // DevTools can report bad minification during injection.\n checkDCE();\n module.exports = require('./cjs/react-dom.production.min.js');\n} else {\n module.exports = require('./cjs/react-dom.development.js');\n}\n","function toVal(mix) {\n\tvar k, y, str='';\n\n\tif (typeof mix === 'string' || typeof mix === 'number') {\n\t\tstr += mix;\n\t} else if (typeof mix === 'object') {\n\t\tif (Array.isArray(mix)) {\n\t\t\tfor (k=0; k < mix.length; k++) {\n\t\t\t\tif (mix[k]) {\n\t\t\t\t\tif (y = toVal(mix[k])) {\n\t\t\t\t\t\tstr && (str += ' ');\n\t\t\t\t\t\tstr += y;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t} else {\n\t\t\tfor (k in mix) {\n\t\t\t\tif (mix[k]) {\n\t\t\t\t\tstr && (str += ' ');\n\t\t\t\t\tstr += k;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn str;\n}\n\nexport default function () {\n\tvar i=0, tmp, x, str='';\n\twhile (i < arguments.length) {\n\t\tif (tmp = arguments[i++]) {\n\t\t\tif (x = toVal(tmp)) {\n\t\t\t\tstr && (str += ' ');\n\t\t\t\tstr += x\n\t\t\t}\n\t\t}\n\t}\n\treturn str;\n}\n","import _extends from '@babel/runtime/helpers/esm/extends';\nimport isInBrowser from 'is-in-browser';\nimport warning from 'tiny-warning';\nimport _createClass from '@babel/runtime/helpers/esm/createClass';\nimport _inheritsLoose from '@babel/runtime/helpers/esm/inheritsLoose';\nimport _assertThisInitialized from '@babel/runtime/helpers/esm/assertThisInitialized';\nimport _objectWithoutPropertiesLoose from '@babel/runtime/helpers/esm/objectWithoutPropertiesLoose';\n\nvar plainObjectConstrurctor = {}.constructor;\nfunction cloneStyle(style) {\n if (style == null || typeof style !== 'object') return style;\n if (Array.isArray(style)) return style.map(cloneStyle);\n if (style.constructor !== plainObjectConstrurctor) return style;\n var newStyle = {};\n\n for (var name in style) {\n newStyle[name] = cloneStyle(style[name]);\n }\n\n return newStyle;\n}\n\n/**\n * Create a rule instance.\n */\n\nfunction createRule(name, decl, options) {\n if (name === void 0) {\n name = 'unnamed';\n }\n\n var jss = options.jss;\n var declCopy = cloneStyle(decl);\n var rule = jss.plugins.onCreateRule(name, declCopy, options);\n if (rule) return rule; // It is an at-rule and it has no instance.\n\n if (name[0] === '@') {\n process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] Unknown rule \" + name) : void 0;\n }\n\n return null;\n}\n\nvar join = function join(value, by) {\n var result = '';\n\n for (var i = 0; i < value.length; i++) {\n // Remove !important from the value, it will be readded later.\n if (value[i] === '!important') break;\n if (result) result += by;\n result += value[i];\n }\n\n return result;\n};\n/**\n * Converts array values to string.\n *\n * `margin: [['5px', '10px']]` > `margin: 5px 10px;`\n * `border: ['1px', '2px']` > `border: 1px, 2px;`\n * `margin: [['5px', '10px'], '!important']` > `margin: 5px 10px !important;`\n * `color: ['red', !important]` > `color: red !important;`\n */\n\n\nfunction toCssValue(value, ignoreImportant) {\n if (ignoreImportant === void 0) {\n ignoreImportant = false;\n }\n\n if (!Array.isArray(value)) return value;\n var cssValue = ''; // Support space separated values via `[['5px', '10px']]`.\n\n if (Array.isArray(value[0])) {\n for (var i = 0; i < value.length; i++) {\n if (value[i] === '!important') break;\n if (cssValue) cssValue += ', ';\n cssValue += join(value[i], ' ');\n }\n } else cssValue = join(value, ', '); // Add !important, because it was ignored.\n\n\n if (!ignoreImportant && value[value.length - 1] === '!important') {\n cssValue += ' !important';\n }\n\n return cssValue;\n}\n\n/**\n * Indent a string.\n * http://jsperf.com/array-join-vs-for\n */\nfunction indentStr(str, indent) {\n var result = '';\n\n for (var index = 0; index < indent; index++) {\n result += ' ';\n }\n\n return result + str;\n}\n/**\n * Converts a Rule to CSS string.\n */\n\n\nfunction toCss(selector, style, options) {\n if (options === void 0) {\n options = {};\n }\n\n var result = '';\n if (!style) return result;\n var _options = options,\n _options$indent = _options.indent,\n indent = _options$indent === void 0 ? 0 : _options$indent;\n var fallbacks = style.fallbacks;\n if (selector) indent++; // Apply fallbacks first.\n\n if (fallbacks) {\n // Array syntax {fallbacks: [{prop: value}]}\n if (Array.isArray(fallbacks)) {\n for (var index = 0; index < fallbacks.length; index++) {\n var fallback = fallbacks[index];\n\n for (var prop in fallback) {\n var value = fallback[prop];\n\n if (value != null) {\n if (result) result += '\\n';\n result += \"\" + indentStr(prop + \": \" + toCssValue(value) + \";\", indent);\n }\n }\n }\n } else {\n // Object syntax {fallbacks: {prop: value}}\n for (var _prop in fallbacks) {\n var _value = fallbacks[_prop];\n\n if (_value != null) {\n if (result) result += '\\n';\n result += \"\" + indentStr(_prop + \": \" + toCssValue(_value) + \";\", indent);\n }\n }\n }\n }\n\n for (var _prop2 in style) {\n var _value2 = style[_prop2];\n\n if (_value2 != null && _prop2 !== 'fallbacks') {\n if (result) result += '\\n';\n result += \"\" + indentStr(_prop2 + \": \" + toCssValue(_value2) + \";\", indent);\n }\n } // Allow empty style in this case, because properties will be added dynamically.\n\n\n if (!result && !options.allowEmpty) return result; // When rule is being stringified before selector was defined.\n\n if (!selector) return result;\n indent--;\n if (result) result = \"\\n\" + result + \"\\n\";\n return indentStr(selector + \" {\" + result, indent) + indentStr('}', indent);\n}\n\nvar escapeRegex = /([[\\].#*$><+~=|^:(),\"'`\\s])/g;\nvar nativeEscape = typeof CSS !== 'undefined' && CSS.escape;\nvar escape = (function (str) {\n return nativeEscape ? nativeEscape(str) : str.replace(escapeRegex, '\\\\$1');\n});\n\nvar BaseStyleRule =\n/*#__PURE__*/\nfunction () {\n function BaseStyleRule(key, style, options) {\n this.type = 'style';\n this.key = void 0;\n this.isProcessed = false;\n this.style = void 0;\n this.renderer = void 0;\n this.renderable = void 0;\n this.options = void 0;\n var sheet = options.sheet,\n Renderer = options.Renderer;\n this.key = key;\n this.options = options;\n this.style = style;\n if (sheet) this.renderer = sheet.renderer;else if (Renderer) this.renderer = new Renderer();\n }\n /**\n * Get or set a style property.\n */\n\n\n var _proto = BaseStyleRule.prototype;\n\n _proto.prop = function prop(name, value, options) {\n // It's a getter.\n if (value === undefined) return this.style[name]; // Don't do anything if the value has not changed.\n\n var force = options ? options.force : false;\n if (!force && this.style[name] === value) return this;\n var newValue = value;\n\n if (!options || options.process !== false) {\n newValue = this.options.jss.plugins.onChangeValue(value, name, this);\n }\n\n var isEmpty = newValue == null || newValue === false;\n var isDefined = name in this.style; // Value is empty and wasn't defined before.\n\n if (isEmpty && !isDefined && !force) return this; // We are going to remove this value.\n\n var remove = isEmpty && isDefined;\n if (remove) delete this.style[name];else this.style[name] = newValue; // Renderable is defined if StyleSheet option `link` is true.\n\n if (this.renderable && this.renderer) {\n if (remove) this.renderer.removeProperty(this.renderable, name);else this.renderer.setProperty(this.renderable, name, newValue);\n return this;\n }\n\n var sheet = this.options.sheet;\n\n if (sheet && sheet.attached) {\n process.env.NODE_ENV !== \"production\" ? warning(false, '[JSS] Rule is not linked. Missing sheet option \"link: true\".') : void 0;\n }\n\n return this;\n };\n\n return BaseStyleRule;\n}();\nvar StyleRule =\n/*#__PURE__*/\nfunction (_BaseStyleRule) {\n _inheritsLoose(StyleRule, _BaseStyleRule);\n\n function StyleRule(key, style, options) {\n var _this;\n\n _this = _BaseStyleRule.call(this, key, style, options) || this;\n _this.selectorText = void 0;\n _this.id = void 0;\n _this.renderable = void 0;\n var selector = options.selector,\n scoped = options.scoped,\n sheet = options.sheet,\n generateId = options.generateId;\n\n if (selector) {\n _this.selectorText = selector;\n } else if (scoped !== false) {\n _this.id = generateId(_assertThisInitialized(_assertThisInitialized(_this)), sheet);\n _this.selectorText = \".\" + escape(_this.id);\n }\n\n return _this;\n }\n /**\n * Set selector string.\n * Attention: use this with caution. Most browsers didn't implement\n * selectorText setter, so this may result in rerendering of entire Style Sheet.\n */\n\n\n var _proto2 = StyleRule.prototype;\n\n /**\n * Apply rule to an element inline.\n */\n _proto2.applyTo = function applyTo(renderable) {\n var renderer = this.renderer;\n\n if (renderer) {\n var json = this.toJSON();\n\n for (var prop in json) {\n renderer.setProperty(renderable, prop, json[prop]);\n }\n }\n\n return this;\n }\n /**\n * Returns JSON representation of the rule.\n * Fallbacks are not supported.\n * Useful for inline styles.\n */\n ;\n\n _proto2.toJSON = function toJSON() {\n var json = {};\n\n for (var prop in this.style) {\n var value = this.style[prop];\n if (typeof value !== 'object') json[prop] = value;else if (Array.isArray(value)) json[prop] = toCssValue(value);\n }\n\n return json;\n }\n /**\n * Generates a CSS string.\n */\n ;\n\n _proto2.toString = function toString(options) {\n var sheet = this.options.sheet;\n var link = sheet ? sheet.options.link : false;\n var opts = link ? _extends({}, options, {\n allowEmpty: true\n }) : options;\n return toCss(this.selectorText, this.style, opts);\n };\n\n _createClass(StyleRule, [{\n key: \"selector\",\n set: function set(selector) {\n if (selector === this.selectorText) return;\n this.selectorText = selector;\n var renderer = this.renderer,\n renderable = this.renderable;\n if (!renderable || !renderer) return;\n var hasChanged = renderer.setSelector(renderable, selector); // If selector setter is not implemented, rerender the rule.\n\n if (!hasChanged) {\n renderer.replaceRule(renderable, this);\n }\n }\n /**\n * Get selector string.\n */\n ,\n get: function get() {\n return this.selectorText;\n }\n }]);\n\n return StyleRule;\n}(BaseStyleRule);\nvar pluginStyleRule = {\n onCreateRule: function onCreateRule(name, style, options) {\n if (name[0] === '@' || options.parent && options.parent.type === 'keyframes') {\n return null;\n }\n\n return new StyleRule(name, style, options);\n }\n};\n\nvar defaultToStringOptions = {\n indent: 1,\n children: true\n};\nvar atRegExp = /@([\\w-]+)/;\n/**\n * Conditional rule for @media, @supports\n */\n\nvar ConditionalRule =\n/*#__PURE__*/\nfunction () {\n function ConditionalRule(key, styles, options) {\n this.type = 'conditional';\n this.at = void 0;\n this.key = void 0;\n this.query = void 0;\n this.rules = void 0;\n this.options = void 0;\n this.isProcessed = false;\n this.renderable = void 0;\n this.key = key; // Key might contain a unique suffix in case the `name` passed by user was duplicate.\n\n this.query = options.name;\n var atMatch = key.match(atRegExp);\n this.at = atMatch ? atMatch[1] : 'unknown';\n this.options = options;\n this.rules = new RuleList(_extends({}, options, {\n parent: this\n }));\n\n for (var name in styles) {\n this.rules.add(name, styles[name]);\n }\n\n this.rules.process();\n }\n /**\n * Get a rule.\n */\n\n\n var _proto = ConditionalRule.prototype;\n\n _proto.getRule = function getRule(name) {\n return this.rules.get(name);\n }\n /**\n * Get index of a rule.\n */\n ;\n\n _proto.indexOf = function indexOf(rule) {\n return this.rules.indexOf(rule);\n }\n /**\n * Create and register rule, run plugins.\n */\n ;\n\n _proto.addRule = function addRule(name, style, options) {\n var rule = this.rules.add(name, style, options);\n if (!rule) return null;\n this.options.jss.plugins.onProcessRule(rule);\n return rule;\n }\n /**\n * Generates a CSS string.\n */\n ;\n\n _proto.toString = function toString(options) {\n if (options === void 0) {\n options = defaultToStringOptions;\n }\n\n if (options.indent == null) options.indent = defaultToStringOptions.indent;\n if (options.children == null) options.children = defaultToStringOptions.children;\n\n if (options.children === false) {\n return this.query + \" {}\";\n }\n\n var children = this.rules.toString(options);\n return children ? this.query + \" {\\n\" + children + \"\\n}\" : '';\n };\n\n return ConditionalRule;\n}();\nvar keyRegExp = /@media|@supports\\s+/;\nvar pluginConditionalRule = {\n onCreateRule: function onCreateRule(key, styles, options) {\n return keyRegExp.test(key) ? new ConditionalRule(key, styles, options) : null;\n }\n};\n\nvar defaultToStringOptions$1 = {\n indent: 1,\n children: true\n};\nvar nameRegExp = /@keyframes\\s+([\\w-]+)/;\n/**\n * Rule for @keyframes\n */\n\nvar KeyframesRule =\n/*#__PURE__*/\nfunction () {\n function KeyframesRule(key, frames, options) {\n this.type = 'keyframes';\n this.at = '@keyframes';\n this.key = void 0;\n this.name = void 0;\n this.id = void 0;\n this.rules = void 0;\n this.options = void 0;\n this.isProcessed = false;\n this.renderable = void 0;\n var nameMatch = key.match(nameRegExp);\n\n if (nameMatch && nameMatch[1]) {\n this.name = nameMatch[1];\n } else {\n this.name = 'noname';\n process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] Bad keyframes name \" + key) : void 0;\n }\n\n this.key = this.type + \"-\" + this.name;\n this.options = options;\n var scoped = options.scoped,\n sheet = options.sheet,\n generateId = options.generateId;\n this.id = scoped === false ? this.name : escape(generateId(this, sheet));\n this.rules = new RuleList(_extends({}, options, {\n parent: this\n }));\n\n for (var name in frames) {\n this.rules.add(name, frames[name], _extends({}, options, {\n parent: this\n }));\n }\n\n this.rules.process();\n }\n /**\n * Generates a CSS string.\n */\n\n\n var _proto = KeyframesRule.prototype;\n\n _proto.toString = function toString(options) {\n if (options === void 0) {\n options = defaultToStringOptions$1;\n }\n\n if (options.indent == null) options.indent = defaultToStringOptions$1.indent;\n if (options.children == null) options.children = defaultToStringOptions$1.children;\n\n if (options.children === false) {\n return this.at + \" \" + this.id + \" {}\";\n }\n\n var children = this.rules.toString(options);\n if (children) children = \"\\n\" + children + \"\\n\";\n return this.at + \" \" + this.id + \" {\" + children + \"}\";\n };\n\n return KeyframesRule;\n}();\nvar keyRegExp$1 = /@keyframes\\s+/;\nvar refRegExp = /\\$([\\w-]+)/g;\n\nvar findReferencedKeyframe = function findReferencedKeyframe(val, keyframes) {\n if (typeof val === 'string') {\n return val.replace(refRegExp, function (match, name) {\n if (name in keyframes) {\n return keyframes[name];\n }\n\n process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] Referenced keyframes rule \\\"\" + name + \"\\\" is not defined.\") : void 0;\n return match;\n });\n }\n\n return val;\n};\n/**\n * Replace the reference for a animation name.\n */\n\n\nvar replaceRef = function replaceRef(style, prop, keyframes) {\n var value = style[prop];\n var refKeyframe = findReferencedKeyframe(value, keyframes);\n\n if (refKeyframe !== value) {\n style[prop] = refKeyframe;\n }\n};\n\nvar plugin = {\n onCreateRule: function onCreateRule(key, frames, options) {\n return typeof key === 'string' && keyRegExp$1.test(key) ? new KeyframesRule(key, frames, options) : null;\n },\n // Animation name ref replacer.\n onProcessStyle: function onProcessStyle(style, rule, sheet) {\n if (rule.type !== 'style' || !sheet) return style;\n if ('animation-name' in style) replaceRef(style, 'animation-name', sheet.keyframes);\n if ('animation' in style) replaceRef(style, 'animation', sheet.keyframes);\n return style;\n },\n onChangeValue: function onChangeValue(val, prop, rule) {\n var sheet = rule.options.sheet;\n\n if (!sheet) {\n return val;\n }\n\n switch (prop) {\n case 'animation':\n return findReferencedKeyframe(val, sheet.keyframes);\n\n case 'animation-name':\n return findReferencedKeyframe(val, sheet.keyframes);\n\n default:\n return val;\n }\n }\n};\n\nvar KeyframeRule =\n/*#__PURE__*/\nfunction (_BaseStyleRule) {\n _inheritsLoose(KeyframeRule, _BaseStyleRule);\n\n function KeyframeRule() {\n var _this;\n\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n _this = _BaseStyleRule.call.apply(_BaseStyleRule, [this].concat(args)) || this;\n _this.renderable = void 0;\n return _this;\n }\n\n var _proto = KeyframeRule.prototype;\n\n /**\n * Generates a CSS string.\n */\n _proto.toString = function toString(options) {\n var sheet = this.options.sheet;\n var link = sheet ? sheet.options.link : false;\n var opts = link ? _extends({}, options, {\n allowEmpty: true\n }) : options;\n return toCss(this.key, this.style, opts);\n };\n\n return KeyframeRule;\n}(BaseStyleRule);\nvar pluginKeyframeRule = {\n onCreateRule: function onCreateRule(key, style, options) {\n if (options.parent && options.parent.type === 'keyframes') {\n return new KeyframeRule(key, style, options);\n }\n\n return null;\n }\n};\n\nvar FontFaceRule =\n/*#__PURE__*/\nfunction () {\n function FontFaceRule(key, style, options) {\n this.type = 'font-face';\n this.at = '@font-face';\n this.key = void 0;\n this.style = void 0;\n this.options = void 0;\n this.isProcessed = false;\n this.renderable = void 0;\n this.key = key;\n this.style = style;\n this.options = options;\n }\n /**\n * Generates a CSS string.\n */\n\n\n var _proto = FontFaceRule.prototype;\n\n _proto.toString = function toString(options) {\n if (Array.isArray(this.style)) {\n var str = '';\n\n for (var index = 0; index < this.style.length; index++) {\n str += toCss(this.at, this.style[index]);\n if (this.style[index + 1]) str += '\\n';\n }\n\n return str;\n }\n\n return toCss(this.at, this.style, options);\n };\n\n return FontFaceRule;\n}();\nvar keyRegExp$2 = /@font-face/;\nvar pluginFontFaceRule = {\n onCreateRule: function onCreateRule(key, style, options) {\n return keyRegExp$2.test(key) ? new FontFaceRule(key, style, options) : null;\n }\n};\n\nvar ViewportRule =\n/*#__PURE__*/\nfunction () {\n function ViewportRule(key, style, options) {\n this.type = 'viewport';\n this.at = '@viewport';\n this.key = void 0;\n this.style = void 0;\n this.options = void 0;\n this.isProcessed = false;\n this.renderable = void 0;\n this.key = key;\n this.style = style;\n this.options = options;\n }\n /**\n * Generates a CSS string.\n */\n\n\n var _proto = ViewportRule.prototype;\n\n _proto.toString = function toString(options) {\n return toCss(this.key, this.style, options);\n };\n\n return ViewportRule;\n}();\nvar pluginViewportRule = {\n onCreateRule: function onCreateRule(key, style, options) {\n return key === '@viewport' || key === '@-ms-viewport' ? new ViewportRule(key, style, options) : null;\n }\n};\n\nvar SimpleRule =\n/*#__PURE__*/\nfunction () {\n function SimpleRule(key, value, options) {\n this.type = 'simple';\n this.key = void 0;\n this.value = void 0;\n this.options = void 0;\n this.isProcessed = false;\n this.renderable = void 0;\n this.key = key;\n this.value = value;\n this.options = options;\n }\n /**\n * Generates a CSS string.\n */\n // eslint-disable-next-line no-unused-vars\n\n\n var _proto = SimpleRule.prototype;\n\n _proto.toString = function toString(options) {\n if (Array.isArray(this.value)) {\n var str = '';\n\n for (var index = 0; index < this.value.length; index++) {\n str += this.key + \" \" + this.value[index] + \";\";\n if (this.value[index + 1]) str += '\\n';\n }\n\n return str;\n }\n\n return this.key + \" \" + this.value + \";\";\n };\n\n return SimpleRule;\n}();\nvar keysMap = {\n '@charset': true,\n '@import': true,\n '@namespace': true\n};\nvar pluginSimpleRule = {\n onCreateRule: function onCreateRule(key, value, options) {\n return key in keysMap ? new SimpleRule(key, value, options) : null;\n }\n};\n\nvar plugins = [pluginStyleRule, pluginConditionalRule, plugin, pluginKeyframeRule, pluginFontFaceRule, pluginViewportRule, pluginSimpleRule];\n\nvar defaultUpdateOptions = {\n process: true\n};\nvar forceUpdateOptions = {\n force: true,\n process: true\n /**\n * Contains rules objects and allows adding/removing etc.\n * Is used for e.g. by `StyleSheet` or `ConditionalRule`.\n */\n\n};\n\nvar RuleList =\n/*#__PURE__*/\nfunction () {\n // Rules registry for access by .get() method.\n // It contains the same rule registered by name and by selector.\n // Original styles object.\n // Used to ensure correct rules order.\n function RuleList(options) {\n this.map = {};\n this.raw = {};\n this.index = [];\n this.counter = 0;\n this.options = void 0;\n this.classes = void 0;\n this.keyframes = void 0;\n this.options = options;\n this.classes = options.classes;\n this.keyframes = options.keyframes;\n }\n /**\n * Create and register rule.\n *\n * Will not render after Style Sheet was rendered the first time.\n */\n\n\n var _proto = RuleList.prototype;\n\n _proto.add = function add(name, decl, ruleOptions) {\n var _this$options = this.options,\n parent = _this$options.parent,\n sheet = _this$options.sheet,\n jss = _this$options.jss,\n Renderer = _this$options.Renderer,\n generateId = _this$options.generateId,\n scoped = _this$options.scoped;\n\n var options = _extends({\n classes: this.classes,\n parent: parent,\n sheet: sheet,\n jss: jss,\n Renderer: Renderer,\n generateId: generateId,\n scoped: scoped,\n name: name,\n keyframes: this.keyframes,\n selector: undefined\n }, ruleOptions); // When user uses .createStyleSheet(), duplicate names are not possible, but\n // `sheet.addRule()` opens the door for any duplicate rule name. When this happens\n // we need to make the key unique within this RuleList instance scope.\n\n\n var key = name;\n\n if (name in this.raw) {\n key = name + \"-d\" + this.counter++;\n } // We need to save the original decl before creating the rule\n // because cache plugin needs to use it as a key to return a cached rule.\n\n\n this.raw[key] = decl;\n\n if (key in this.classes) {\n // E.g. rules inside of @media container\n options.selector = \".\" + escape(this.classes[key]);\n }\n\n var rule = createRule(key, decl, options);\n if (!rule) return null;\n this.register(rule);\n var index = options.index === undefined ? this.index.length : options.index;\n this.index.splice(index, 0, rule);\n return rule;\n }\n /**\n * Get a rule.\n */\n ;\n\n _proto.get = function get(name) {\n return this.map[name];\n }\n /**\n * Delete a rule.\n */\n ;\n\n _proto.remove = function remove(rule) {\n this.unregister(rule);\n delete this.raw[rule.key];\n this.index.splice(this.index.indexOf(rule), 1);\n }\n /**\n * Get index of a rule.\n */\n ;\n\n _proto.indexOf = function indexOf(rule) {\n return this.index.indexOf(rule);\n }\n /**\n * Run `onProcessRule()` plugins on every rule.\n */\n ;\n\n _proto.process = function process() {\n var plugins = this.options.jss.plugins; // We need to clone array because if we modify the index somewhere else during a loop\n // we end up with very hard-to-track-down side effects.\n\n this.index.slice(0).forEach(plugins.onProcessRule, plugins);\n }\n /**\n * Register a rule in `.map`, `.classes` and `.keyframes` maps.\n */\n ;\n\n _proto.register = function register(rule) {\n this.map[rule.key] = rule;\n\n if (rule instanceof StyleRule) {\n this.map[rule.selector] = rule;\n if (rule.id) this.classes[rule.key] = rule.id;\n } else if (rule instanceof KeyframesRule && this.keyframes) {\n this.keyframes[rule.name] = rule.id;\n }\n }\n /**\n * Unregister a rule.\n */\n ;\n\n _proto.unregister = function unregister(rule) {\n delete this.map[rule.key];\n\n if (rule instanceof StyleRule) {\n delete this.map[rule.selector];\n delete this.classes[rule.key];\n } else if (rule instanceof KeyframesRule) {\n delete this.keyframes[rule.name];\n }\n }\n /**\n * Update the function values with a new data.\n */\n ;\n\n _proto.update = function update() {\n var name;\n var data;\n var options;\n\n if (typeof (arguments.length <= 0 ? undefined : arguments[0]) === 'string') {\n name = arguments.length <= 0 ? undefined : arguments[0]; // $FlowFixMe\n\n data = arguments.length <= 1 ? undefined : arguments[1]; // $FlowFixMe\n\n options = arguments.length <= 2 ? undefined : arguments[2];\n } else {\n data = arguments.length <= 0 ? undefined : arguments[0]; // $FlowFixMe\n\n options = arguments.length <= 1 ? undefined : arguments[1];\n name = null;\n }\n\n if (name) {\n this.updateOne(this.map[name], data, options);\n } else {\n for (var index = 0; index < this.index.length; index++) {\n this.updateOne(this.index[index], data, options);\n }\n }\n }\n /**\n * Execute plugins, update rule props.\n */\n ;\n\n _proto.updateOne = function updateOne(rule, data, options) {\n if (options === void 0) {\n options = defaultUpdateOptions;\n }\n\n var _this$options2 = this.options,\n plugins = _this$options2.jss.plugins,\n sheet = _this$options2.sheet; // It is a rules container like for e.g. ConditionalRule.\n\n if (rule.rules instanceof RuleList) {\n rule.rules.update(data, options);\n return;\n }\n\n var styleRule = rule;\n var style = styleRule.style;\n plugins.onUpdate(data, rule, sheet, options); // We rely on a new `style` ref in case it was mutated during onUpdate hook.\n\n if (options.process && style && style !== styleRule.style) {\n // We need to run the plugins in case new `style` relies on syntax plugins.\n plugins.onProcessStyle(styleRule.style, styleRule, sheet); // Update and add props.\n\n for (var prop in styleRule.style) {\n var nextValue = styleRule.style[prop];\n var prevValue = style[prop]; // We need to use `force: true` because `rule.style` has been updated during onUpdate hook, so `rule.prop()` will not update the CSSOM rule.\n // We do this comparison to avoid unneeded `rule.prop()` calls, since we have the old `style` object here.\n\n if (nextValue !== prevValue) {\n styleRule.prop(prop, nextValue, forceUpdateOptions);\n }\n } // Remove props.\n\n\n for (var _prop in style) {\n var _nextValue = styleRule.style[_prop];\n var _prevValue = style[_prop]; // We need to use `force: true` because `rule.style` has been updated during onUpdate hook, so `rule.prop()` will not update the CSSOM rule.\n // We do this comparison to avoid unneeded `rule.prop()` calls, since we have the old `style` object here.\n\n if (_nextValue == null && _nextValue !== _prevValue) {\n styleRule.prop(_prop, null, forceUpdateOptions);\n }\n }\n }\n }\n /**\n * Convert rules to a CSS string.\n */\n ;\n\n _proto.toString = function toString(options) {\n var str = '';\n var sheet = this.options.sheet;\n var link = sheet ? sheet.options.link : false;\n\n for (var index = 0; index < this.index.length; index++) {\n var rule = this.index[index];\n var css = rule.toString(options); // No need to render an empty rule.\n\n if (!css && !link) continue;\n if (str) str += '\\n';\n str += css;\n }\n\n return str;\n };\n\n return RuleList;\n}();\n\nvar StyleSheet =\n/*#__PURE__*/\nfunction () {\n function StyleSheet(styles, options) {\n this.options = void 0;\n this.deployed = void 0;\n this.attached = void 0;\n this.rules = void 0;\n this.renderer = void 0;\n this.classes = void 0;\n this.keyframes = void 0;\n this.queue = void 0;\n this.attached = false;\n this.deployed = false;\n this.classes = {};\n this.keyframes = {};\n this.options = _extends({}, options, {\n sheet: this,\n parent: this,\n classes: this.classes,\n keyframes: this.keyframes\n });\n\n if (options.Renderer) {\n this.renderer = new options.Renderer(this);\n }\n\n this.rules = new RuleList(this.options);\n\n for (var name in styles) {\n this.rules.add(name, styles[name]);\n }\n\n this.rules.process();\n }\n /**\n * Attach renderable to the render tree.\n */\n\n\n var _proto = StyleSheet.prototype;\n\n _proto.attach = function attach() {\n if (this.attached) return this;\n if (this.renderer) this.renderer.attach();\n this.attached = true; // Order is important, because we can't use insertRule API if style element is not attached.\n\n if (!this.deployed) this.deploy();\n return this;\n }\n /**\n * Remove renderable from render tree.\n */\n ;\n\n _proto.detach = function detach() {\n if (!this.attached) return this;\n if (this.renderer) this.renderer.detach();\n this.attached = false;\n return this;\n }\n /**\n * Add a rule to the current stylesheet.\n * Will insert a rule also after the stylesheet has been rendered first time.\n */\n ;\n\n _proto.addRule = function addRule(name, decl, options) {\n var queue = this.queue; // Plugins can create rules.\n // In order to preserve the right order, we need to queue all `.addRule` calls,\n // which happen after the first `rules.add()` call.\n\n if (this.attached && !queue) this.queue = [];\n var rule = this.rules.add(name, decl, options);\n if (!rule) return null;\n this.options.jss.plugins.onProcessRule(rule);\n\n if (this.attached) {\n if (!this.deployed) return rule; // Don't insert rule directly if there is no stringified version yet.\n // It will be inserted all together when .attach is called.\n\n if (queue) queue.push(rule);else {\n this.insertRule(rule);\n\n if (this.queue) {\n this.queue.forEach(this.insertRule, this);\n this.queue = undefined;\n }\n }\n return rule;\n } // We can't add rules to a detached style node.\n // We will redeploy the sheet once user will attach it.\n\n\n this.deployed = false;\n return rule;\n }\n /**\n * Insert rule into the StyleSheet\n */\n ;\n\n _proto.insertRule = function insertRule(rule) {\n if (this.renderer) {\n this.renderer.insertRule(rule);\n }\n }\n /**\n * Create and add rules.\n * Will render also after Style Sheet was rendered the first time.\n */\n ;\n\n _proto.addRules = function addRules(styles, options) {\n var added = [];\n\n for (var name in styles) {\n var rule = this.addRule(name, styles[name], options);\n if (rule) added.push(rule);\n }\n\n return added;\n }\n /**\n * Get a rule by name.\n */\n ;\n\n _proto.getRule = function getRule(name) {\n return this.rules.get(name);\n }\n /**\n * Delete a rule by name.\n * Returns `true`: if rule has been deleted from the DOM.\n */\n ;\n\n _proto.deleteRule = function deleteRule(name) {\n var rule = typeof name === 'object' ? name : this.rules.get(name);\n if (!rule) return false;\n this.rules.remove(rule);\n\n if (this.attached && rule.renderable && this.renderer) {\n return this.renderer.deleteRule(rule.renderable);\n }\n\n return true;\n }\n /**\n * Get index of a rule.\n */\n ;\n\n _proto.indexOf = function indexOf(rule) {\n return this.rules.indexOf(rule);\n }\n /**\n * Deploy pure CSS string to a renderable.\n */\n ;\n\n _proto.deploy = function deploy() {\n if (this.renderer) this.renderer.deploy();\n this.deployed = true;\n return this;\n }\n /**\n * Update the function values with a new data.\n */\n ;\n\n _proto.update = function update() {\n var _this$rules;\n\n (_this$rules = this.rules).update.apply(_this$rules, arguments);\n\n return this;\n }\n /**\n * Updates a single rule.\n */\n ;\n\n _proto.updateOne = function updateOne(rule, data, options) {\n this.rules.updateOne(rule, data, options);\n return this;\n }\n /**\n * Convert rules to a CSS string.\n */\n ;\n\n _proto.toString = function toString(options) {\n return this.rules.toString(options);\n };\n\n return StyleSheet;\n}();\n\nvar PluginsRegistry =\n/*#__PURE__*/\nfunction () {\n function PluginsRegistry() {\n this.plugins = {\n internal: [],\n external: []\n };\n this.registry = void 0;\n }\n\n var _proto = PluginsRegistry.prototype;\n\n /**\n * Call `onCreateRule` hooks and return an object if returned by a hook.\n */\n _proto.onCreateRule = function onCreateRule(name, decl, options) {\n for (var i = 0; i < this.registry.onCreateRule.length; i++) {\n var rule = this.registry.onCreateRule[i](name, decl, options);\n if (rule) return rule;\n }\n\n return null;\n }\n /**\n * Call `onProcessRule` hooks.\n */\n ;\n\n _proto.onProcessRule = function onProcessRule(rule) {\n if (rule.isProcessed) return;\n var sheet = rule.options.sheet;\n\n for (var i = 0; i < this.registry.onProcessRule.length; i++) {\n this.registry.onProcessRule[i](rule, sheet);\n }\n\n if (rule.style) this.onProcessStyle(rule.style, rule, sheet);\n rule.isProcessed = true;\n }\n /**\n * Call `onProcessStyle` hooks.\n */\n ;\n\n _proto.onProcessStyle = function onProcessStyle(style, rule, sheet) {\n for (var i = 0; i < this.registry.onProcessStyle.length; i++) {\n // $FlowFixMe\n rule.style = this.registry.onProcessStyle[i](rule.style, rule, sheet);\n }\n }\n /**\n * Call `onProcessSheet` hooks.\n */\n ;\n\n _proto.onProcessSheet = function onProcessSheet(sheet) {\n for (var i = 0; i < this.registry.onProcessSheet.length; i++) {\n this.registry.onProcessSheet[i](sheet);\n }\n }\n /**\n * Call `onUpdate` hooks.\n */\n ;\n\n _proto.onUpdate = function onUpdate(data, rule, sheet, options) {\n for (var i = 0; i < this.registry.onUpdate.length; i++) {\n this.registry.onUpdate[i](data, rule, sheet, options);\n }\n }\n /**\n * Call `onChangeValue` hooks.\n */\n ;\n\n _proto.onChangeValue = function onChangeValue(value, prop, rule) {\n var processedValue = value;\n\n for (var i = 0; i < this.registry.onChangeValue.length; i++) {\n processedValue = this.registry.onChangeValue[i](processedValue, prop, rule);\n }\n\n return processedValue;\n }\n /**\n * Register a plugin.\n */\n ;\n\n _proto.use = function use(newPlugin, options) {\n if (options === void 0) {\n options = {\n queue: 'external'\n };\n }\n\n var plugins = this.plugins[options.queue]; // Avoids applying same plugin twice, at least based on ref.\n\n if (plugins.indexOf(newPlugin) !== -1) {\n return;\n }\n\n plugins.push(newPlugin);\n this.registry = [].concat(this.plugins.external, this.plugins.internal).reduce(function (registry, plugin) {\n for (var name in plugin) {\n if (name in registry) {\n registry[name].push(plugin[name]);\n } else {\n process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] Unknown hook \\\"\" + name + \"\\\".\") : void 0;\n }\n }\n\n return registry;\n }, {\n onCreateRule: [],\n onProcessRule: [],\n onProcessStyle: [],\n onProcessSheet: [],\n onChangeValue: [],\n onUpdate: []\n });\n };\n\n return PluginsRegistry;\n}();\n\n/**\n * Sheets registry to access them all at one place.\n */\nvar SheetsRegistry =\n/*#__PURE__*/\nfunction () {\n function SheetsRegistry() {\n this.registry = [];\n }\n\n var _proto = SheetsRegistry.prototype;\n\n /**\n * Register a Style Sheet.\n */\n _proto.add = function add(sheet) {\n var registry = this.registry;\n var index = sheet.options.index;\n if (registry.indexOf(sheet) !== -1) return;\n\n if (registry.length === 0 || index >= this.index) {\n registry.push(sheet);\n return;\n } // Find a position.\n\n\n for (var i = 0; i < registry.length; i++) {\n if (registry[i].options.index > index) {\n registry.splice(i, 0, sheet);\n return;\n }\n }\n }\n /**\n * Reset the registry.\n */\n ;\n\n _proto.reset = function reset() {\n this.registry = [];\n }\n /**\n * Remove a Style Sheet.\n */\n ;\n\n _proto.remove = function remove(sheet) {\n var index = this.registry.indexOf(sheet);\n this.registry.splice(index, 1);\n }\n /**\n * Convert all attached sheets to a CSS string.\n */\n ;\n\n _proto.toString = function toString(_temp) {\n var _ref = _temp === void 0 ? {} : _temp,\n attached = _ref.attached,\n options = _objectWithoutPropertiesLoose(_ref, [\"attached\"]);\n\n var css = '';\n\n for (var i = 0; i < this.registry.length; i++) {\n var sheet = this.registry[i];\n\n if (attached != null && sheet.attached !== attached) {\n continue;\n }\n\n if (css) css += '\\n';\n css += sheet.toString(options);\n }\n\n return css;\n };\n\n _createClass(SheetsRegistry, [{\n key: \"index\",\n\n /**\n * Current highest index number.\n */\n get: function get() {\n return this.registry.length === 0 ? 0 : this.registry[this.registry.length - 1].options.index;\n }\n }]);\n\n return SheetsRegistry;\n}();\n\n/**\n * This is a global sheets registry. Only DomRenderer will add sheets to it.\n * On the server one should use an own SheetsRegistry instance and add the\n * sheets to it, because you need to make sure to create a new registry for\n * each request in order to not leak sheets across requests.\n */\n\nvar sheets = new SheetsRegistry();\n\n/* eslint-disable */\n// https://github.com/zloirock/core-js/issues/86#issuecomment-115759028\nvar globalThis = typeof window != 'undefined' && window.Math == Math ? window : typeof self != 'undefined' && self.Math == Math ? self : Function('return this')();\n\nvar ns = '2f1acc6c3a606b082e5eef5e54414ffb';\nif (globalThis[ns] == null) globalThis[ns] = 0; // Bundle may contain multiple JSS versions at the same time. In order to identify\n// the current version with just one short number and use it for classes generation\n// we use a counter. Also it is more accurate, because user can manually reevaluate\n// the module.\n\nvar moduleId = globalThis[ns]++;\n\nvar maxRules = 1e10;\n\n/**\n * Returns a function which generates unique class names based on counters.\n * When new generator function is created, rule counter is reseted.\n * We need to reset the rule counter for SSR for each request.\n */\nvar createGenerateId = function createGenerateId(options) {\n if (options === void 0) {\n options = {};\n }\n\n var ruleCounter = 0;\n return function (rule, sheet) {\n ruleCounter += 1;\n\n if (ruleCounter > maxRules) {\n process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] You might have a memory leak. Rule counter is at \" + ruleCounter + \".\") : void 0;\n }\n\n var jssId = '';\n var prefix = '';\n\n if (sheet) {\n if (sheet.options.classNamePrefix) {\n prefix = sheet.options.classNamePrefix;\n }\n\n if (sheet.options.jss.id != null) {\n jssId = String(sheet.options.jss.id);\n }\n }\n\n if (options.minify) {\n // Using \"c\" because a number can't be the first char in a class name.\n return \"\" + (prefix || 'c') + moduleId + jssId + ruleCounter;\n }\n\n return prefix + rule.key + \"-\" + moduleId + (jssId ? \"-\" + jssId : '') + \"-\" + ruleCounter;\n };\n};\n\n/**\n * Cache the value from the first time a function is called.\n */\nvar memoize = function memoize(fn) {\n var value;\n return function () {\n if (!value) value = fn();\n return value;\n };\n};\n/**\n * Get a style property value.\n */\n\n\nfunction getPropertyValue(cssRule, prop) {\n try {\n // Support CSSTOM.\n if (cssRule.attributeStyleMap) {\n return cssRule.attributeStyleMap.get(prop);\n }\n\n return cssRule.style.getPropertyValue(prop);\n } catch (err) {\n // IE may throw if property is unknown.\n return '';\n }\n}\n/**\n * Set a style property.\n */\n\n\nfunction setProperty(cssRule, prop, value) {\n try {\n var cssValue = value;\n\n if (Array.isArray(value)) {\n cssValue = toCssValue(value, true);\n\n if (value[value.length - 1] === '!important') {\n cssRule.style.setProperty(prop, cssValue, 'important');\n return true;\n }\n } // Support CSSTOM.\n\n\n if (cssRule.attributeStyleMap) {\n cssRule.attributeStyleMap.set(prop, cssValue);\n } else {\n cssRule.style.setProperty(prop, cssValue);\n }\n } catch (err) {\n // IE may throw if property is unknown.\n return false;\n }\n\n return true;\n}\n/**\n * Remove a style property.\n */\n\n\nfunction removeProperty(cssRule, prop) {\n try {\n // Support CSSTOM.\n if (cssRule.attributeStyleMap) {\n cssRule.attributeStyleMap.delete(prop);\n } else {\n cssRule.style.removeProperty(prop);\n }\n } catch (err) {\n process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] DOMException \\\"\" + err.message + \"\\\" was thrown. Tried to remove property \\\"\" + prop + \"\\\".\") : void 0;\n }\n}\n/**\n * Set the selector.\n */\n\n\nfunction setSelector(cssRule, selectorText) {\n cssRule.selectorText = selectorText; // Return false if setter was not successful.\n // Currently works in chrome only.\n\n return cssRule.selectorText === selectorText;\n}\n/**\n * Gets the `head` element upon the first call and caches it.\n * We assume it can't be null.\n */\n\n\nvar getHead = memoize(function () {\n return document.querySelector('head');\n});\n/**\n * Find attached sheet with an index higher than the passed one.\n */\n\nfunction findHigherSheet(registry, options) {\n for (var i = 0; i < registry.length; i++) {\n var sheet = registry[i];\n\n if (sheet.attached && sheet.options.index > options.index && sheet.options.insertionPoint === options.insertionPoint) {\n return sheet;\n }\n }\n\n return null;\n}\n/**\n * Find attached sheet with the highest index.\n */\n\n\nfunction findHighestSheet(registry, options) {\n for (var i = registry.length - 1; i >= 0; i--) {\n var sheet = registry[i];\n\n if (sheet.attached && sheet.options.insertionPoint === options.insertionPoint) {\n return sheet;\n }\n }\n\n return null;\n}\n/**\n * Find a comment with \"jss\" inside.\n */\n\n\nfunction findCommentNode(text) {\n var head = getHead();\n\n for (var i = 0; i < head.childNodes.length; i++) {\n var node = head.childNodes[i];\n\n if (node.nodeType === 8 && node.nodeValue.trim() === text) {\n return node;\n }\n }\n\n return null;\n}\n\n/**\n * Find a node before which we can insert the sheet.\n */\nfunction findPrevNode(options) {\n var registry = sheets.registry;\n\n if (registry.length > 0) {\n // Try to insert before the next higher sheet.\n var sheet = findHigherSheet(registry, options);\n\n if (sheet && sheet.renderer) {\n return {\n parent: sheet.renderer.element.parentNode,\n node: sheet.renderer.element\n };\n } // Otherwise insert after the last attached.\n\n\n sheet = findHighestSheet(registry, options);\n\n if (sheet && sheet.renderer) {\n return {\n parent: sheet.renderer.element.parentNode,\n node: sheet.renderer.element.nextSibling\n };\n }\n } // Try to find a comment placeholder if registry is empty.\n\n\n var insertionPoint = options.insertionPoint;\n\n if (insertionPoint && typeof insertionPoint === 'string') {\n var comment = findCommentNode(insertionPoint);\n\n if (comment) {\n return {\n parent: comment.parentNode,\n node: comment.nextSibling\n };\n } // If user specifies an insertion point and it can't be found in the document -\n // bad specificity issues may appear.\n\n\n process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] Insertion point \\\"\" + insertionPoint + \"\\\" not found.\") : void 0;\n }\n\n return false;\n}\n/**\n * Insert style element into the DOM.\n */\n\n\nfunction insertStyle(style, options) {\n var insertionPoint = options.insertionPoint;\n var nextNode = findPrevNode(options);\n\n if (nextNode !== false && nextNode.parent) {\n nextNode.parent.insertBefore(style, nextNode.node);\n return;\n } // Works with iframes and any node types.\n\n\n if (insertionPoint && typeof insertionPoint.nodeType === 'number') {\n // https://stackoverflow.com/questions/41328728/force-casting-in-flow\n var insertionPointElement = insertionPoint;\n var parentNode = insertionPointElement.parentNode;\n if (parentNode) parentNode.insertBefore(style, insertionPointElement.nextSibling);else process.env.NODE_ENV !== \"production\" ? warning(false, '[JSS] Insertion point is not in the DOM.') : void 0;\n return;\n }\n\n getHead().appendChild(style);\n}\n/**\n * Read jss nonce setting from the page if the user has set it.\n */\n\n\nvar getNonce = memoize(function () {\n var node = document.querySelector('meta[property=\"csp-nonce\"]');\n return node ? node.getAttribute('content') : null;\n});\n\nvar _insertRule = function insertRule(container, rule, index) {\n var maxIndex = container.cssRules.length; // In case previous insertion fails, passed index might be wrong\n\n if (index === undefined || index > maxIndex) {\n // eslint-disable-next-line no-param-reassign\n index = maxIndex;\n }\n\n try {\n if ('insertRule' in container) {\n var c = container;\n c.insertRule(rule, index);\n } // Keyframes rule.\n else if ('appendRule' in container) {\n var _c = container;\n\n _c.appendRule(rule);\n }\n } catch (err) {\n process.env.NODE_ENV !== \"production\" ? warning(false, \"[JSS] \" + err.message) : void 0;\n return false;\n }\n\n return container.cssRules[index];\n};\n\nvar createStyle = function createStyle() {\n var el = document.createElement('style'); // Without it, IE will have a broken source order specificity if we\n // insert rules after we insert the style tag.\n // It seems to kick-off the source order specificity algorithm.\n\n el.textContent = '\\n';\n return el;\n};\n\nvar DomRenderer =\n/*#__PURE__*/\nfunction () {\n // HTMLStyleElement needs fixing https://github.com/facebook/flow/issues/2696\n function DomRenderer(sheet) {\n this.getPropertyValue = getPropertyValue;\n this.setProperty = setProperty;\n this.removeProperty = removeProperty;\n this.setSelector = setSelector;\n this.element = void 0;\n this.sheet = void 0;\n this.hasInsertedRules = false;\n // There is no sheet when the renderer is used from a standalone StyleRule.\n if (sheet) sheets.add(sheet);\n this.sheet = sheet;\n\n var _ref = this.sheet ? this.sheet.options : {},\n media = _ref.media,\n meta = _ref.meta,\n element = _ref.element;\n\n this.element = element || createStyle();\n this.element.setAttribute('data-jss', '');\n if (media) this.element.setAttribute('media', media);\n if (meta) this.element.setAttribute('data-meta', meta);\n var nonce = getNonce();\n if (nonce) this.element.setAttribute('nonce', nonce);\n }\n /**\n * Insert style element into render tree.\n */\n\n\n var _proto = DomRenderer.prototype;\n\n _proto.attach = function attach() {\n // In the case the element node is external and it is already in the DOM.\n if (this.element.parentNode || !this.sheet) return;\n insertStyle(this.element, this.sheet.options); // When rules are inserted using `insertRule` API, after `sheet.detach().attach()`\n // most browsers create a new CSSStyleSheet, except of all IEs.\n\n var deployed = Boolean(this.sheet && this.sheet.deployed);\n\n if (this.hasInsertedRules && deployed) {\n this.hasInsertedRules = false;\n this.deploy();\n }\n }\n /**\n * Remove style element from render tree.\n */\n ;\n\n _proto.detach = function detach() {\n var parentNode = this.element.parentNode;\n if (parentNode) parentNode.removeChild(this.element);\n }\n /**\n * Inject CSS string into element.\n */\n ;\n\n _proto.deploy = function deploy() {\n var sheet = this.sheet;\n if (!sheet) return;\n\n if (sheet.options.link) {\n this.insertRules(sheet.rules);\n return;\n }\n\n this.element.textContent = \"\\n\" + sheet.toString() + \"\\n\";\n }\n /**\n * Insert RuleList into an element.\n */\n ;\n\n _proto.insertRules = function insertRules(rules, nativeParent) {\n for (var i = 0; i < rules.index.length; i++) {\n this.insertRule(rules.index[i], i, nativeParent);\n }\n }\n /**\n * Insert a rule into element.\n */\n ;\n\n _proto.insertRule = function insertRule(rule, index, nativeParent) {\n if (nativeParent === void 0) {\n nativeParent = this.element.sheet;\n }\n\n if (rule.rules) {\n var parent = rule;\n var latestNativeParent = nativeParent;\n\n if (rule.type === 'conditional' || rule.type === 'keyframes') {\n // We need to render the container without children first.\n latestNativeParent = _insertRule(nativeParent, parent.toString({\n children: false\n }), index);\n\n if (latestNativeParent === false) {\n return false;\n }\n }\n\n this.insertRules(parent.rules, latestNativeParent);\n return latestNativeParent;\n } // IE keeps the CSSStyleSheet after style node has been reattached,\n // so we need to check if the `renderable` reference the right style sheet and not\n // rerender those rules.\n\n\n if (rule.renderable && rule.renderable.parentStyleSheet === this.element.sheet) {\n return rule.renderable;\n }\n\n var ruleStr = rule.toString();\n if (!ruleStr) return false;\n\n var nativeRule = _insertRule(nativeParent, ruleStr, index);\n\n if (nativeRule === false) {\n return false;\n }\n\n this.hasInsertedRules = true;\n rule.renderable = nativeRule;\n return nativeRule;\n }\n /**\n * Delete a rule.\n */\n ;\n\n _proto.deleteRule = function deleteRule(cssRule) {\n var sheet = this.element.sheet;\n var index = this.indexOf(cssRule);\n if (index === -1) return false;\n sheet.deleteRule(index);\n return true;\n }\n /**\n * Get index of a CSS Rule.\n */\n ;\n\n _proto.indexOf = function indexOf(cssRule) {\n var cssRules = this.element.sheet.cssRules;\n\n for (var index = 0; index < cssRules.length; index++) {\n if (cssRule === cssRules[index]) return index;\n }\n\n return -1;\n }\n /**\n * Generate a new CSS rule and replace the existing one.\n *\n * Only used for some old browsers because they can't set a selector.\n */\n ;\n\n _proto.replaceRule = function replaceRule(cssRule, rule) {\n var index = this.indexOf(cssRule);\n if (index === -1) return false;\n this.element.sheet.deleteRule(index);\n return this.insertRule(rule, index);\n }\n /**\n * Get all rules elements.\n */\n ;\n\n _proto.getRules = function getRules() {\n return this.element.sheet.cssRules;\n };\n\n return DomRenderer;\n}();\n\nvar instanceCounter = 0;\n\nvar Jss =\n/*#__PURE__*/\nfunction () {\n function Jss(options) {\n this.id = instanceCounter++;\n this.version = \"10.4.0\";\n this.plugins = new PluginsRegistry();\n this.options = {\n id: {\n minify: false\n },\n createGenerateId: createGenerateId,\n Renderer: isInBrowser ? DomRenderer : null,\n plugins: []\n };\n this.generateId = createGenerateId({\n minify: false\n });\n\n for (var i = 0; i < plugins.length; i++) {\n this.plugins.use(plugins[i], {\n queue: 'internal'\n });\n }\n\n this.setup(options);\n }\n /**\n * Prepares various options, applies plugins.\n * Should not be used twice on the same instance, because there is no plugins\n * deduplication logic.\n */\n\n\n var _proto = Jss.prototype;\n\n _proto.setup = function setup(options) {\n if (options === void 0) {\n options = {};\n }\n\n if (options.createGenerateId) {\n this.options.createGenerateId = options.createGenerateId;\n }\n\n if (options.id) {\n this.options.id = _extends({}, this.options.id, options.id);\n }\n\n if (options.createGenerateId || options.id) {\n this.generateId = this.options.createGenerateId(this.options.id);\n }\n\n if (options.insertionPoint != null) this.options.insertionPoint = options.insertionPoint;\n\n if ('Renderer' in options) {\n this.options.Renderer = options.Renderer;\n } // eslint-disable-next-line prefer-spread\n\n\n if (options.plugins) this.use.apply(this, options.plugins);\n return this;\n }\n /**\n * Create a Style Sheet.\n */\n ;\n\n _proto.createStyleSheet = function createStyleSheet(styles, options) {\n if (options === void 0) {\n options = {};\n }\n\n var _options = options,\n index = _options.index;\n\n if (typeof index !== 'number') {\n index = sheets.index === 0 ? 0 : sheets.index + 1;\n }\n\n var sheet = new StyleSheet(styles, _extends({}, options, {\n jss: this,\n generateId: options.generateId || this.generateId,\n insertionPoint: this.options.insertionPoint,\n Renderer: this.options.Renderer,\n index: index\n }));\n this.plugins.onProcessSheet(sheet);\n return sheet;\n }\n /**\n * Detach the Style Sheet and remove it from the registry.\n */\n ;\n\n _proto.removeStyleSheet = function removeStyleSheet(sheet) {\n sheet.detach();\n sheets.remove(sheet);\n return this;\n }\n /**\n * Create a rule without a Style Sheet.\n * [Deprecated] will be removed in the next major version.\n */\n ;\n\n _proto.createRule = function createRule$1(name, style, options) {\n if (style === void 0) {\n style = {};\n }\n\n if (options === void 0) {\n options = {};\n }\n\n // Enable rule without name for inline styles.\n if (typeof name === 'object') {\n // $FlowIgnore\n return this.createRule(undefined, name, style);\n } // $FlowIgnore\n\n\n var ruleOptions = _extends({}, options, {\n name: name,\n jss: this,\n Renderer: this.options.Renderer\n });\n\n if (!ruleOptions.generateId) ruleOptions.generateId = this.generateId;\n if (!ruleOptions.classes) ruleOptions.classes = {};\n if (!ruleOptions.keyframes) ruleOptions.keyframes = {};\n\n var rule = createRule(name, style, ruleOptions);\n\n if (rule) this.plugins.onProcessRule(rule);\n return rule;\n }\n /**\n * Register plugin. Passed function will be invoked with a rule instance.\n */\n ;\n\n _proto.use = function use() {\n var _this = this;\n\n for (var _len = arguments.length, plugins = new Array(_len), _key = 0; _key < _len; _key++) {\n plugins[_key] = arguments[_key];\n }\n\n plugins.forEach(function (plugin) {\n _this.plugins.use(plugin);\n });\n return this;\n };\n\n return Jss;\n}();\n\n/**\n * Extracts a styles object with only props that contain function values.\n */\nfunction getDynamicStyles(styles) {\n var to = null;\n\n for (var key in styles) {\n var value = styles[key];\n var type = typeof value;\n\n if (type === 'function') {\n if (!to) to = {};\n to[key] = value;\n } else if (type === 'object' && value !== null && !Array.isArray(value)) {\n var extracted = getDynamicStyles(value);\n\n if (extracted) {\n if (!to) to = {};\n to[key] = extracted;\n }\n }\n }\n\n return to;\n}\n\n/**\n * SheetsManager is like a WeakMap which is designed to count StyleSheet\n * instances and attach/detach automatically.\n */\nvar SheetsManager =\n/*#__PURE__*/\nfunction () {\n function SheetsManager() {\n this.length = 0;\n this.sheets = new WeakMap();\n }\n\n var _proto = SheetsManager.prototype;\n\n _proto.get = function get(key) {\n var entry = this.sheets.get(key);\n return entry && entry.sheet;\n };\n\n _proto.add = function add(key, sheet) {\n if (this.sheets.has(key)) return;\n this.length++;\n this.sheets.set(key, {\n sheet: sheet,\n refs: 0\n });\n };\n\n _proto.manage = function manage(key) {\n var entry = this.sheets.get(key);\n\n if (entry) {\n if (entry.refs === 0) {\n entry.sheet.attach();\n }\n\n entry.refs++;\n return entry.sheet;\n }\n\n warning(false, \"[JSS] SheetsManager: can't find sheet to manage\");\n return undefined;\n };\n\n _proto.unmanage = function unmanage(key) {\n var entry = this.sheets.get(key);\n\n if (entry) {\n if (entry.refs > 0) {\n entry.refs--;\n if (entry.refs === 0) entry.sheet.detach();\n }\n } else {\n warning(false, \"SheetsManager: can't find sheet to unmanage\");\n }\n };\n\n _createClass(SheetsManager, [{\n key: \"size\",\n get: function get() {\n return this.length;\n }\n }]);\n\n return SheetsManager;\n}();\n\n/**\n * A better abstraction over CSS.\n *\n * @copyright Oleg Isonen (Slobodskoi) / Isonen 2014-present\n * @website https://github.com/cssinjs/jss\n * @license MIT\n */\n\n/**\n * Export a constant indicating if this browser has CSSTOM support.\n * https://developers.google.com/web/updates/2018/03/cssom\n */\nvar hasCSSTOMSupport = typeof CSS !== 'undefined' && CSS && 'number' in CSS;\n/**\n * Creates a new instance of Jss.\n */\n\nvar create = function create(options) {\n return new Jss(options);\n};\n/**\n * A global Jss instance.\n */\n\nvar index = create();\n\nexport default index;\nexport { RuleList, SheetsManager, SheetsRegistry, create, createGenerateId, createRule, getDynamicStyles, hasCSSTOMSupport, sheets, toCssValue };\n","import { formatMuiErrorMessage as _formatMuiErrorMessage } from \"@material-ui/utils\";\n\n/* eslint-disable no-use-before-define */\n\n/**\n * Returns a number whose value is limited to the given range.\n *\n * @param {number} value The value to be clamped\n * @param {number} min The lower boundary of the output range\n * @param {number} max The upper boundary of the output range\n * @returns {number} A number in the range [min, max]\n */\nfunction clamp(value) {\n var min = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;\n var max = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 1;\n\n if (process.env.NODE_ENV !== 'production') {\n if (value < min || value > max) {\n console.error(\"Material-UI: The value provided \".concat(value, \" is out of range [\").concat(min, \", \").concat(max, \"].\"));\n }\n }\n\n return Math.min(Math.max(min, value), max);\n}\n/**\n * Converts a color from CSS hex format to CSS rgb format.\n *\n * @param {string} color - Hex color, i.e. #nnn or #nnnnnn\n * @returns {string} A CSS rgb color string\n */\n\n\nexport function hexToRgb(color) {\n color = color.substr(1);\n var re = new RegExp(\".{1,\".concat(color.length >= 6 ? 2 : 1, \"}\"), 'g');\n var colors = color.match(re);\n\n if (colors && colors[0].length === 1) {\n colors = colors.map(function (n) {\n return n + n;\n });\n }\n\n return colors ? \"rgb\".concat(colors.length === 4 ? 'a' : '', \"(\").concat(colors.map(function (n, index) {\n return index < 3 ? parseInt(n, 16) : Math.round(parseInt(n, 16) / 255 * 1000) / 1000;\n }).join(', '), \")\") : '';\n}\n\nfunction intToHex(int) {\n var hex = int.toString(16);\n return hex.length === 1 ? \"0\".concat(hex) : hex;\n}\n/**\n * Converts a color from CSS rgb format to CSS hex format.\n *\n * @param {string} color - RGB color, i.e. rgb(n, n, n)\n * @returns {string} A CSS rgb color string, i.e. #nnnnnn\n */\n\n\nexport function rgbToHex(color) {\n // Idempotent\n if (color.indexOf('#') === 0) {\n return color;\n }\n\n var _decomposeColor = decomposeColor(color),\n values = _decomposeColor.values;\n\n return \"#\".concat(values.map(function (n) {\n return intToHex(n);\n }).join(''));\n}\n/**\n * Converts a color from hsl format to rgb format.\n *\n * @param {string} color - HSL color values\n * @returns {string} rgb color values\n */\n\nexport function hslToRgb(color) {\n color = decomposeColor(color);\n var _color = color,\n values = _color.values;\n var h = values[0];\n var s = values[1] / 100;\n var l = values[2] / 100;\n var a = s * Math.min(l, 1 - l);\n\n var f = function f(n) {\n var k = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : (n + h / 30) % 12;\n return l - a * Math.max(Math.min(k - 3, 9 - k, 1), -1);\n };\n\n var type = 'rgb';\n var rgb = [Math.round(f(0) * 255), Math.round(f(8) * 255), Math.round(f(4) * 255)];\n\n if (color.type === 'hsla') {\n type += 'a';\n rgb.push(values[3]);\n }\n\n return recomposeColor({\n type: type,\n values: rgb\n });\n}\n/**\n * Returns an object with the type and values of a color.\n *\n * Note: Does not support rgb % values.\n *\n * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @returns {object} - A MUI color object: {type: string, values: number[]}\n */\n\nexport function decomposeColor(color) {\n // Idempotent\n if (color.type) {\n return color;\n }\n\n if (color.charAt(0) === '#') {\n return decomposeColor(hexToRgb(color));\n }\n\n var marker = color.indexOf('(');\n var type = color.substring(0, marker);\n\n if (['rgb', 'rgba', 'hsl', 'hsla'].indexOf(type) === -1) {\n throw new Error(process.env.NODE_ENV !== \"production\" ? \"Material-UI: Unsupported `\".concat(color, \"` color.\\nWe support the following formats: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla().\") : _formatMuiErrorMessage(3, color));\n }\n\n var values = color.substring(marker + 1, color.length - 1).split(',');\n values = values.map(function (value) {\n return parseFloat(value);\n });\n return {\n type: type,\n values: values\n };\n}\n/**\n * Converts a color object with type and values to a string.\n *\n * @param {object} color - Decomposed color\n * @param {string} color.type - One of: 'rgb', 'rgba', 'hsl', 'hsla'\n * @param {array} color.values - [n,n,n] or [n,n,n,n]\n * @returns {string} A CSS color string\n */\n\nexport function recomposeColor(color) {\n var type = color.type;\n var values = color.values;\n\n if (type.indexOf('rgb') !== -1) {\n // Only convert the first 3 values to int (i.e. not alpha)\n values = values.map(function (n, i) {\n return i < 3 ? parseInt(n, 10) : n;\n });\n } else if (type.indexOf('hsl') !== -1) {\n values[1] = \"\".concat(values[1], \"%\");\n values[2] = \"\".concat(values[2], \"%\");\n }\n\n return \"\".concat(type, \"(\").concat(values.join(', '), \")\");\n}\n/**\n * Calculates the contrast ratio between two colors.\n *\n * Formula: https://www.w3.org/TR/WCAG20-TECHS/G17.html#G17-tests\n *\n * @param {string} foreground - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @param {string} background - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @returns {number} A contrast ratio value in the range 0 - 21.\n */\n\nexport function getContrastRatio(foreground, background) {\n var lumA = getLuminance(foreground);\n var lumB = getLuminance(background);\n return (Math.max(lumA, lumB) + 0.05) / (Math.min(lumA, lumB) + 0.05);\n}\n/**\n * The relative brightness of any point in a color space,\n * normalized to 0 for darkest black and 1 for lightest white.\n *\n * Formula: https://www.w3.org/TR/WCAG20-TECHS/G17.html#G17-tests\n *\n * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @returns {number} The relative brightness of the color in the range 0 - 1\n */\n\nexport function getLuminance(color) {\n color = decomposeColor(color);\n var rgb = color.type === 'hsl' ? decomposeColor(hslToRgb(color)).values : color.values;\n rgb = rgb.map(function (val) {\n val /= 255; // normalized\n\n return val <= 0.03928 ? val / 12.92 : Math.pow((val + 0.055) / 1.055, 2.4);\n }); // Truncate at 3 digits\n\n return Number((0.2126 * rgb[0] + 0.7152 * rgb[1] + 0.0722 * rgb[2]).toFixed(3));\n}\n/**\n * Darken or lighten a color, depending on its luminance.\n * Light colors are darkened, dark colors are lightened.\n *\n * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @param {number} coefficient=0.15 - multiplier in the range 0 - 1\n * @returns {string} A CSS color string. Hex input values are returned as rgb\n */\n\nexport function emphasize(color) {\n var coefficient = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0.15;\n return getLuminance(color) > 0.5 ? darken(color, coefficient) : lighten(color, coefficient);\n}\n/**\n * Set the absolute transparency of a color.\n * Any existing alpha values are overwritten.\n *\n * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @param {number} value - value to set the alpha channel to in the range 0 -1\n * @returns {string} A CSS color string. Hex input values are returned as rgb\n */\n\nexport function fade(color, value) {\n color = decomposeColor(color);\n value = clamp(value);\n\n if (color.type === 'rgb' || color.type === 'hsl') {\n color.type += 'a';\n }\n\n color.values[3] = value;\n return recomposeColor(color);\n}\n/**\n * Darkens a color.\n *\n * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @param {number} coefficient - multiplier in the range 0 - 1\n * @returns {string} A CSS color string. Hex input values are returned as rgb\n */\n\nexport function darken(color, coefficient) {\n color = decomposeColor(color);\n coefficient = clamp(coefficient);\n\n if (color.type.indexOf('hsl') !== -1) {\n color.values[2] *= 1 - coefficient;\n } else if (color.type.indexOf('rgb') !== -1) {\n for (var i = 0; i < 3; i += 1) {\n color.values[i] *= 1 - coefficient;\n }\n }\n\n return recomposeColor(color);\n}\n/**\n * Lightens a color.\n *\n * @param {string} color - CSS color, i.e. one of: #nnn, #nnnnnn, rgb(), rgba(), hsl(), hsla()\n * @param {number} coefficient - multiplier in the range 0 - 1\n * @returns {string} A CSS color string. Hex input values are returned as rgb\n */\n\nexport function lighten(color, coefficient) {\n color = decomposeColor(color);\n coefficient = clamp(coefficient);\n\n if (color.type.indexOf('hsl') !== -1) {\n color.values[2] += (100 - color.values[2]) * coefficient;\n } else if (color.type.indexOf('rgb') !== -1) {\n for (var i = 0; i < 3; i += 1) {\n color.values[i] += (255 - color.values[i]) * coefficient;\n }\n }\n\n return recomposeColor(color);\n}","import * as React from 'react';\nimport setRef from './setRef';\nexport default function useForkRef(refA, refB) {\n /**\n * This will create a new function if the ref props change and are defined.\n * This means react will call the old forkRef with `null` and the new forkRef\n * with the ref. Cleanup naturally emerges from this behavior\n */\n return React.useMemo(function () {\n if (refA == null && refB == null) {\n return null;\n }\n\n return function (refValue) {\n setRef(refA, refValue);\n setRef(refB, refValue);\n };\n }, [refA, refB]);\n}","export default function _defineProperty(obj, key, value) {\n if (key in obj) {\n Object.defineProperty(obj, key, {\n value: value,\n enumerable: true,\n configurable: true,\n writable: true\n });\n } else {\n obj[key] = value;\n }\n\n return obj;\n}","/* eslint-disable no-restricted-syntax */\nexport default function getThemeProps(params) {\n var theme = params.theme,\n name = params.name,\n props = params.props;\n\n if (!theme || !theme.props || !theme.props[name]) {\n return props;\n } // Resolve default props, code borrow from React source.\n // https://github.com/facebook/react/blob/15a8f031838a553e41c0b66eb1bcf1da8448104d/packages/react/src/ReactElement.js#L221\n\n\n var defaultProps = theme.props[name];\n var propName;\n\n for (propName in defaultProps) {\n if (props[propName] === undefined) {\n props[propName] = defaultProps[propName];\n }\n }\n\n return props;\n}","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport React from 'react';\nimport PropTypes from 'prop-types';\nimport hoistNonReactStatics from 'hoist-non-react-statics';\nimport { chainPropTypes, getDisplayName } from '@material-ui/utils';\nimport makeStyles from '../makeStyles';\nimport getThemeProps from '../getThemeProps';\nimport useTheme from '../useTheme'; // Link a style sheet with a component.\n// It does not modify the component passed to it;\n// instead, it returns a new component, with a `classes` property.\n\nvar withStyles = function withStyles(stylesOrCreator) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n return function (Component) {\n var defaultTheme = options.defaultTheme,\n _options$withTheme = options.withTheme,\n withTheme = _options$withTheme === void 0 ? false : _options$withTheme,\n name = options.name,\n stylesOptions = _objectWithoutProperties(options, [\"defaultTheme\", \"withTheme\", \"name\"]);\n\n if (process.env.NODE_ENV !== 'production') {\n if (Component === undefined) {\n throw new Error(['You are calling withStyles(styles)(Component) with an undefined component.', 'You may have forgotten to import it.'].join('\\n'));\n }\n }\n\n var classNamePrefix = name;\n\n if (process.env.NODE_ENV !== 'production') {\n if (!name) {\n // Provide a better DX outside production.\n var displayName = getDisplayName(Component);\n\n if (displayName !== undefined) {\n classNamePrefix = displayName;\n }\n }\n }\n\n var useStyles = makeStyles(stylesOrCreator, _extends({\n defaultTheme: defaultTheme,\n Component: Component,\n name: name || Component.displayName,\n classNamePrefix: classNamePrefix\n }, stylesOptions));\n var WithStyles = React.forwardRef(function WithStyles(props, ref) {\n var classesProp = props.classes,\n innerRef = props.innerRef,\n other = _objectWithoutProperties(props, [\"classes\", \"innerRef\"]); // The wrapper receives only user supplied props, which could be a subset of\n // the actual props Component might receive due to merging with defaultProps.\n // So copying it here would give us the same result in the wrapper as well.\n\n\n var classes = useStyles(_extends(_extends({}, Component.defaultProps), props));\n var theme;\n var more = other;\n\n if (typeof name === 'string' || withTheme) {\n // name and withTheme are invariant in the outer scope\n // eslint-disable-next-line react-hooks/rules-of-hooks\n theme = useTheme() || defaultTheme;\n\n if (name) {\n more = getThemeProps({\n theme: theme,\n name: name,\n props: other\n });\n } // Provide the theme to the wrapped component.\n // So we don't have to use the `withTheme()` Higher-order Component.\n\n\n if (withTheme && !more.theme) {\n more.theme = theme;\n }\n }\n\n return /*#__PURE__*/React.createElement(Component, _extends({\n ref: innerRef || ref,\n classes: classes\n }, more));\n });\n process.env.NODE_ENV !== \"production\" ? WithStyles.propTypes = {\n /**\n * Override or extend the styles applied to the component.\n */\n classes: PropTypes.object,\n\n /**\n * Use that prop to pass a ref to the decorated component.\n * @deprecated\n */\n innerRef: chainPropTypes(PropTypes.oneOfType([PropTypes.func, PropTypes.object]), function (props) {\n if (props.innerRef == null) {\n return null;\n }\n\n return null; // return new Error(\n // 'Material-UI: The `innerRef` prop is deprecated and will be removed in v5. ' +\n // 'Refs are now automatically forwarded to the inner component.',\n // );\n })\n } : void 0;\n\n if (process.env.NODE_ENV !== 'production') {\n WithStyles.displayName = \"WithStyles(\".concat(getDisplayName(Component), \")\");\n }\n\n hoistNonReactStatics(WithStyles, Component);\n\n if (process.env.NODE_ENV !== 'production') {\n // Exposed for test purposes.\n WithStyles.Naked = Component;\n WithStyles.options = options;\n WithStyles.useStyles = useStyles;\n }\n\n return WithStyles;\n };\n};\n\nexport default withStyles;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport { withStyles as withStylesWithoutDefault } from '@material-ui/styles';\nimport defaultTheme from './defaultTheme';\n\nfunction withStyles(stylesOrCreator, options) {\n return withStylesWithoutDefault(stylesOrCreator, _extends({\n defaultTheme: defaultTheme\n }, options));\n}\n\nexport default withStyles;","import createMuiTheme from './createMuiTheme';\nvar defaultTheme = createMuiTheme();\nexport default defaultTheme;","// TODO v5: consider to make it private\nexport default function setRef(ref, value) {\n if (typeof ref === 'function') {\n ref(value);\n } else if (ref) {\n ref.current = value;\n }\n}","export default function _assertThisInitialized(self) {\n if (self === void 0) {\n throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\");\n }\n\n return self;\n}","import { formatMuiErrorMessage as _formatMuiErrorMessage } from \"@material-ui/utils\";\n// It should to be noted that this function isn't equivalent to `text-transform: capitalize`.\n//\n// A strict capitalization should uppercase the first letter of each word a the sentence.\n// We only handle the first word.\nexport default function capitalize(string) {\n if (typeof string !== 'string') {\n throw new Error(process.env.NODE_ENV !== \"production\" ? \"Material-UI: capitalize(string) expects a string argument.\" : _formatMuiErrorMessage(7));\n }\n\n return string.charAt(0).toUpperCase() + string.slice(1);\n}","/**\n * Copyright (c) 2013-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\n/**\n * Use invariant() to assert state which your program assumes to be true.\n *\n * Provide sprintf-style format (only %s is supported) and arguments\n * to provide information about what broke and what you were\n * expecting.\n *\n * The invariant message will be stripped in production, but the invariant\n * will remain to ensure logic does not differ in production.\n */\n\nvar invariant = function(condition, format, a, b, c, d, e, f) {\n if (process.env.NODE_ENV !== 'production') {\n if (format === undefined) {\n throw new Error('invariant requires an error message argument');\n }\n }\n\n if (!condition) {\n var error;\n if (format === undefined) {\n error = new Error(\n 'Minified exception occurred; use the non-minified dev environment ' +\n 'for the full error message and additional helpful warnings.'\n );\n } else {\n var args = [a, b, c, d, e, f];\n var argIndex = 0;\n error = new Error(\n format.replace(/%s/g, function() { return args[argIndex++]; })\n );\n error.name = 'Invariant Violation';\n }\n\n error.framesToPop = 1; // we don't care about invariant's own frame\n throw error;\n }\n};\n\nmodule.exports = invariant;\n","'use strict';\n\nmodule.exports = function (data, opts) {\n if (!opts) opts = {};\n if (typeof opts === 'function') opts = { cmp: opts };\n var cycles = (typeof opts.cycles === 'boolean') ? opts.cycles : false;\n\n var cmp = opts.cmp && (function (f) {\n return function (node) {\n return function (a, b) {\n var aobj = { key: a, value: node[a] };\n var bobj = { key: b, value: node[b] };\n return f(aobj, bobj);\n };\n };\n })(opts.cmp);\n\n var seen = [];\n return (function stringify (node) {\n if (node && node.toJSON && typeof node.toJSON === 'function') {\n node = node.toJSON();\n }\n\n if (node === undefined) return;\n if (typeof node == 'number') return isFinite(node) ? '' + node : 'null';\n if (typeof node !== 'object') return JSON.stringify(node);\n\n var i, out;\n if (Array.isArray(node)) {\n out = '[';\n for (i = 0; i < node.length; i++) {\n if (i) out += ',';\n out += stringify(node[i]) || 'null';\n }\n return out + ']';\n }\n\n if (node === null) return 'null';\n\n if (seen.indexOf(node) !== -1) {\n if (cycles) return JSON.stringify('__cycle__');\n throw new TypeError('Converting circular structure to JSON');\n }\n\n var seenIndex = seen.push(node) - 1;\n var keys = Object.keys(node).sort(cmp && cmp(node));\n out = '';\n for (i = 0; i < keys.length; i++) {\n var key = keys[i];\n var value = stringify(node[key]);\n\n if (!value) continue;\n if (out) out += ',';\n out += JSON.stringify(key) + ':' + value;\n }\n seen.splice(seenIndex, 1);\n return '{' + out + '}';\n })(data);\n};\n","var _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nexport var isBrowser = (typeof window === \"undefined\" ? \"undefined\" : _typeof(window)) === \"object\" && (typeof document === \"undefined\" ? \"undefined\" : _typeof(document)) === 'object' && document.nodeType === 9;\n\nexport default isBrowser;\n","/**\n * Copyright (c) 2014-present, Facebook, Inc.\n *\n * This source code is licensed under the MIT license found in the\n * LICENSE file in the root directory of this source tree.\n */\n\n'use strict';\n\n/**\n * Similar to invariant but only logs a warning if the condition is not met.\n * This can be used to log issues in development environments in critical\n * paths. Removing the logging code for production environments will keep the\n * same logic and follow the same code paths.\n */\n\nvar __DEV__ = process.env.NODE_ENV !== 'production';\n\nvar warning = function() {};\n\nif (__DEV__) {\n var printWarning = function printWarning(format, args) {\n var len = arguments.length;\n args = new Array(len > 1 ? len - 1 : 0);\n for (var key = 1; key < len; key++) {\n args[key - 1] = arguments[key];\n }\n var argIndex = 0;\n var message = 'Warning: ' +\n format.replace(/%s/g, function() {\n return args[argIndex++];\n });\n if (typeof console !== 'undefined') {\n console.error(message);\n }\n try {\n // --- Welcome to debugging React ---\n // This error was thrown as a convenience so that you can use this stack\n // to find the callsite that caused this warning to fire.\n throw new Error(message);\n } catch (x) {}\n }\n\n warning = function(condition, format, args) {\n var len = arguments.length;\n args = new Array(len > 2 ? len - 2 : 0);\n for (var key = 2; key < len; key++) {\n args[key - 2] = arguments[key];\n }\n if (format === undefined) {\n throw new Error(\n '`warning(condition, format, ...args)` requires a warning ' +\n 'message argument'\n );\n }\n if (!condition) {\n printWarning.apply(null, [format].concat(args));\n }\n };\n}\n\nmodule.exports = warning;\n","import { useTheme as useThemeWithoutDefault } from '@material-ui/styles';\nimport React from 'react';\nimport defaultTheme from './defaultTheme';\nexport default function useTheme() {\n var theme = useThemeWithoutDefault() || defaultTheme;\n\n if (process.env.NODE_ENV !== 'production') {\n // eslint-disable-next-line react-hooks/rules-of-hooks\n React.useDebugValue(theme);\n }\n\n return theme;\n}","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\n// Sorted ASC by size. That's important.\n// It can't be configured as it's used statically for propTypes.\nexport var keys = ['xs', 'sm', 'md', 'lg', 'xl']; // Keep in mind that @media is inclusive by the CSS specification.\n\nexport default function createBreakpoints(breakpoints) {\n var _breakpoints$values = breakpoints.values,\n values = _breakpoints$values === void 0 ? {\n xs: 0,\n sm: 600,\n md: 960,\n lg: 1280,\n xl: 1920\n } : _breakpoints$values,\n _breakpoints$unit = breakpoints.unit,\n unit = _breakpoints$unit === void 0 ? 'px' : _breakpoints$unit,\n _breakpoints$step = breakpoints.step,\n step = _breakpoints$step === void 0 ? 5 : _breakpoints$step,\n other = _objectWithoutProperties(breakpoints, [\"values\", \"unit\", \"step\"]);\n\n function up(key) {\n var value = typeof values[key] === 'number' ? values[key] : key;\n return \"@media (min-width:\".concat(value).concat(unit, \")\");\n }\n\n function down(key) {\n var endIndex = keys.indexOf(key) + 1;\n var upperbound = values[keys[endIndex]];\n\n if (endIndex === keys.length) {\n // xl down applies to all sizes\n return up('xs');\n }\n\n var value = typeof upperbound === 'number' && endIndex > 0 ? upperbound : key;\n return \"@media (max-width:\".concat(value - step / 100).concat(unit, \")\");\n }\n\n function between(start, end) {\n var endIndex = keys.indexOf(end);\n\n if (endIndex === keys.length - 1) {\n return up(start);\n }\n\n return \"@media (min-width:\".concat(typeof values[start] === 'number' ? values[start] : start).concat(unit, \") and \") + \"(max-width:\".concat((endIndex !== -1 && typeof values[keys[endIndex + 1]] === 'number' ? values[keys[endIndex + 1]] : end) - step / 100).concat(unit, \")\");\n }\n\n function only(key) {\n return between(key, key);\n }\n\n function width(key) {\n return values[key];\n }\n\n return _extends({\n keys: keys,\n values: values,\n up: up,\n down: down,\n between: between,\n only: only,\n width: width\n }, other);\n}","import _defineProperty from \"@babel/runtime/helpers/esm/defineProperty\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\nexport default function createMixins(breakpoints, spacing, mixins) {\n var _toolbar;\n\n return _extends({\n gutters: function gutters() {\n var styles = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n // To deprecate in v4.1\n // warning(\n // false,\n // [\n // 'Material-UI: Theme.mixins.gutters() is deprecated.',\n // 'You can use the source of the mixin directly:',\n // `\n // paddingLeft: theme.spacing(2),\n // paddingRight: theme.spacing(2),\n // [theme.breakpoints.up('sm')]: {\n // paddingLeft: theme.spacing(3),\n // paddingRight: theme.spacing(3),\n // },\n // `,\n // ].join('\\n'),\n // );\n return _extends({\n paddingLeft: spacing(2),\n paddingRight: spacing(2)\n }, styles, _defineProperty({}, breakpoints.up('sm'), _extends({\n paddingLeft: spacing(3),\n paddingRight: spacing(3)\n }, styles[breakpoints.up('sm')])));\n },\n toolbar: (_toolbar = {\n minHeight: 56\n }, _defineProperty(_toolbar, \"\".concat(breakpoints.up('xs'), \" and (orientation: landscape)\"), {\n minHeight: 48\n }), _defineProperty(_toolbar, breakpoints.up('sm'), {\n minHeight: 64\n }), _toolbar)\n }, mixins);\n}","var common = {\n black: '#000',\n white: '#fff'\n};\nexport default common;","var grey = {\n 50: '#fafafa',\n 100: '#f5f5f5',\n 200: '#eeeeee',\n 300: '#e0e0e0',\n 400: '#bdbdbd',\n 500: '#9e9e9e',\n 600: '#757575',\n 700: '#616161',\n 800: '#424242',\n 900: '#212121',\n A100: '#d5d5d5',\n A200: '#aaaaaa',\n A400: '#303030',\n A700: '#616161'\n};\nexport default grey;","var indigo = {\n 50: '#e8eaf6',\n 100: '#c5cae9',\n 200: '#9fa8da',\n 300: '#7986cb',\n 400: '#5c6bc0',\n 500: '#3f51b5',\n 600: '#3949ab',\n 700: '#303f9f',\n 800: '#283593',\n 900: '#1a237e',\n A100: '#8c9eff',\n A200: '#536dfe',\n A400: '#3d5afe',\n A700: '#304ffe'\n};\nexport default indigo;","var pink = {\n 50: '#fce4ec',\n 100: '#f8bbd0',\n 200: '#f48fb1',\n 300: '#f06292',\n 400: '#ec407a',\n 500: '#e91e63',\n 600: '#d81b60',\n 700: '#c2185b',\n 800: '#ad1457',\n 900: '#880e4f',\n A100: '#ff80ab',\n A200: '#ff4081',\n A400: '#f50057',\n A700: '#c51162'\n};\nexport default pink;","var red = {\n 50: '#ffebee',\n 100: '#ffcdd2',\n 200: '#ef9a9a',\n 300: '#e57373',\n 400: '#ef5350',\n 500: '#f44336',\n 600: '#e53935',\n 700: '#d32f2f',\n 800: '#c62828',\n 900: '#b71c1c',\n A100: '#ff8a80',\n A200: '#ff5252',\n A400: '#ff1744',\n A700: '#d50000'\n};\nexport default red;","var orange = {\n 50: '#fff3e0',\n 100: '#ffe0b2',\n 200: '#ffcc80',\n 300: '#ffb74d',\n 400: '#ffa726',\n 500: '#ff9800',\n 600: '#fb8c00',\n 700: '#f57c00',\n 800: '#ef6c00',\n 900: '#e65100',\n A100: '#ffd180',\n A200: '#ffab40',\n A400: '#ff9100',\n A700: '#ff6d00'\n};\nexport default orange;","var blue = {\n 50: '#e3f2fd',\n 100: '#bbdefb',\n 200: '#90caf9',\n 300: '#64b5f6',\n 400: '#42a5f5',\n 500: '#2196f3',\n 600: '#1e88e5',\n 700: '#1976d2',\n 800: '#1565c0',\n 900: '#0d47a1',\n A100: '#82b1ff',\n A200: '#448aff',\n A400: '#2979ff',\n A700: '#2962ff'\n};\nexport default blue;","var green = {\n 50: '#e8f5e9',\n 100: '#c8e6c9',\n 200: '#a5d6a7',\n 300: '#81c784',\n 400: '#66bb6a',\n 500: '#4caf50',\n 600: '#43a047',\n 700: '#388e3c',\n 800: '#2e7d32',\n 900: '#1b5e20',\n A100: '#b9f6ca',\n A200: '#69f0ae',\n A400: '#00e676',\n A700: '#00c853'\n};\nexport default green;","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport { formatMuiErrorMessage as _formatMuiErrorMessage } from \"@material-ui/utils\";\nimport { deepmerge } from '@material-ui/utils';\nimport common from '../colors/common';\nimport grey from '../colors/grey';\nimport indigo from '../colors/indigo';\nimport pink from '../colors/pink';\nimport red from '../colors/red';\nimport orange from '../colors/orange';\nimport blue from '../colors/blue';\nimport green from '../colors/green';\nimport { darken, getContrastRatio, lighten } from './colorManipulator';\nexport var light = {\n // The colors used to style the text.\n text: {\n // The most important text.\n primary: 'rgba(0, 0, 0, 0.87)',\n // Secondary text.\n secondary: 'rgba(0, 0, 0, 0.54)',\n // Disabled text have even lower visual prominence.\n disabled: 'rgba(0, 0, 0, 0.38)',\n // Text hints.\n hint: 'rgba(0, 0, 0, 0.38)'\n },\n // The color used to divide different elements.\n divider: 'rgba(0, 0, 0, 0.12)',\n // The background colors used to style the surfaces.\n // Consistency between these values is important.\n background: {\n paper: common.white,\n default: grey[50]\n },\n // The colors used to style the action elements.\n action: {\n // The color of an active action like an icon button.\n active: 'rgba(0, 0, 0, 0.54)',\n // The color of an hovered action.\n hover: 'rgba(0, 0, 0, 0.04)',\n hoverOpacity: 0.04,\n // The color of a selected action.\n selected: 'rgba(0, 0, 0, 0.08)',\n selectedOpacity: 0.08,\n // The color of a disabled action.\n disabled: 'rgba(0, 0, 0, 0.26)',\n // The background color of a disabled action.\n disabledBackground: 'rgba(0, 0, 0, 0.12)',\n disabledOpacity: 0.38,\n focus: 'rgba(0, 0, 0, 0.12)',\n focusOpacity: 0.12,\n activatedOpacity: 0.12\n }\n};\nexport var dark = {\n text: {\n primary: common.white,\n secondary: 'rgba(255, 255, 255, 0.7)',\n disabled: 'rgba(255, 255, 255, 0.5)',\n hint: 'rgba(255, 255, 255, 0.5)',\n icon: 'rgba(255, 255, 255, 0.5)'\n },\n divider: 'rgba(255, 255, 255, 0.12)',\n background: {\n paper: grey[800],\n default: '#303030'\n },\n action: {\n active: common.white,\n hover: 'rgba(255, 255, 255, 0.08)',\n hoverOpacity: 0.08,\n selected: 'rgba(255, 255, 255, 0.16)',\n selectedOpacity: 0.16,\n disabled: 'rgba(255, 255, 255, 0.3)',\n disabledBackground: 'rgba(255, 255, 255, 0.12)',\n disabledOpacity: 0.38,\n focus: 'rgba(255, 255, 255, 0.12)',\n focusOpacity: 0.12,\n activatedOpacity: 0.24\n }\n};\n\nfunction addLightOrDark(intent, direction, shade, tonalOffset) {\n var tonalOffsetLight = tonalOffset.light || tonalOffset;\n var tonalOffsetDark = tonalOffset.dark || tonalOffset * 1.5;\n\n if (!intent[direction]) {\n if (intent.hasOwnProperty(shade)) {\n intent[direction] = intent[shade];\n } else if (direction === 'light') {\n intent.light = lighten(intent.main, tonalOffsetLight);\n } else if (direction === 'dark') {\n intent.dark = darken(intent.main, tonalOffsetDark);\n }\n }\n}\n\nexport default function createPalette(palette) {\n var _palette$primary = palette.primary,\n primary = _palette$primary === void 0 ? {\n light: indigo[300],\n main: indigo[500],\n dark: indigo[700]\n } : _palette$primary,\n _palette$secondary = palette.secondary,\n secondary = _palette$secondary === void 0 ? {\n light: pink.A200,\n main: pink.A400,\n dark: pink.A700\n } : _palette$secondary,\n _palette$error = palette.error,\n error = _palette$error === void 0 ? {\n light: red[300],\n main: red[500],\n dark: red[700]\n } : _palette$error,\n _palette$warning = palette.warning,\n warning = _palette$warning === void 0 ? {\n light: orange[300],\n main: orange[500],\n dark: orange[700]\n } : _palette$warning,\n _palette$info = palette.info,\n info = _palette$info === void 0 ? {\n light: blue[300],\n main: blue[500],\n dark: blue[700]\n } : _palette$info,\n _palette$success = palette.success,\n success = _palette$success === void 0 ? {\n light: green[300],\n main: green[500],\n dark: green[700]\n } : _palette$success,\n _palette$type = palette.type,\n type = _palette$type === void 0 ? 'light' : _palette$type,\n _palette$contrastThre = palette.contrastThreshold,\n contrastThreshold = _palette$contrastThre === void 0 ? 3 : _palette$contrastThre,\n _palette$tonalOffset = palette.tonalOffset,\n tonalOffset = _palette$tonalOffset === void 0 ? 0.2 : _palette$tonalOffset,\n other = _objectWithoutProperties(palette, [\"primary\", \"secondary\", \"error\", \"warning\", \"info\", \"success\", \"type\", \"contrastThreshold\", \"tonalOffset\"]); // Use the same logic as\n // Bootstrap: https://github.com/twbs/bootstrap/blob/1d6e3710dd447de1a200f29e8fa521f8a0908f70/scss/_functions.scss#L59\n // and material-components-web https://github.com/material-components/material-components-web/blob/ac46b8863c4dab9fc22c4c662dc6bd1b65dd652f/packages/mdc-theme/_functions.scss#L54\n\n\n function getContrastText(background) {\n var contrastText = getContrastRatio(background, dark.text.primary) >= contrastThreshold ? dark.text.primary : light.text.primary;\n\n if (process.env.NODE_ENV !== 'production') {\n var contrast = getContrastRatio(background, contrastText);\n\n if (contrast < 3) {\n console.error([\"Material-UI: The contrast ratio of \".concat(contrast, \":1 for \").concat(contrastText, \" on \").concat(background), 'falls below the WCAG recommended absolute minimum contrast ratio of 3:1.', 'https://www.w3.org/TR/2008/REC-WCAG20-20081211/#visual-audio-contrast-contrast'].join('\\n'));\n }\n }\n\n return contrastText;\n }\n\n var augmentColor = function augmentColor(color) {\n var mainShade = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 500;\n var lightShade = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 300;\n var darkShade = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 700;\n color = _extends({}, color);\n\n if (!color.main && color[mainShade]) {\n color.main = color[mainShade];\n }\n\n if (!color.main) {\n throw new Error(process.env.NODE_ENV !== \"production\" ? \"Material-UI: The color provided to augmentColor(color) is invalid.\\nThe color object needs to have a `main` property or a `\".concat(mainShade, \"` property.\") : _formatMuiErrorMessage(4, mainShade));\n }\n\n if (typeof color.main !== 'string') {\n throw new Error(process.env.NODE_ENV !== \"production\" ? \"Material-UI: The color provided to augmentColor(color) is invalid.\\n`color.main` should be a string, but `\".concat(JSON.stringify(color.main), \"` was provided instead.\\n\\nDid you intend to use one of the following approaches?\\n\\nimport {\\xA0green } from \\\"@material-ui/core/colors\\\";\\n\\nconst theme1 = createMuiTheme({ palette: {\\n primary: green,\\n} });\\n\\nconst theme2 = createMuiTheme({ palette: {\\n primary: { main: green[500] },\\n} });\") : _formatMuiErrorMessage(5, JSON.stringify(color.main)));\n }\n\n addLightOrDark(color, 'light', lightShade, tonalOffset);\n addLightOrDark(color, 'dark', darkShade, tonalOffset);\n\n if (!color.contrastText) {\n color.contrastText = getContrastText(color.main);\n }\n\n return color;\n };\n\n var types = {\n dark: dark,\n light: light\n };\n\n if (process.env.NODE_ENV !== 'production') {\n if (!types[type]) {\n console.error(\"Material-UI: The palette type `\".concat(type, \"` is not supported.\"));\n }\n }\n\n var paletteOutput = deepmerge(_extends({\n // A collection of common colors.\n common: common,\n // The palette type, can be light or dark.\n type: type,\n // The colors used to represent primary interface elements for a user.\n primary: augmentColor(primary),\n // The colors used to represent secondary interface elements for a user.\n secondary: augmentColor(secondary, 'A400', 'A200', 'A700'),\n // The colors used to represent interface elements that the user should be made aware of.\n error: augmentColor(error),\n // The colors used to represent potentially dangerous actions or important messages.\n warning: augmentColor(warning),\n // The colors used to present information to the user that is neutral and not necessarily important.\n info: augmentColor(info),\n // The colors used to indicate the successful completion of an action that user triggered.\n success: augmentColor(success),\n // The grey colors.\n grey: grey,\n // Used by `getContrastText()` to maximize the contrast between\n // the background and the text.\n contrastThreshold: contrastThreshold,\n // Takes a background color and returns the text color that maximizes the contrast.\n getContrastText: getContrastText,\n // Generate a rich color object.\n augmentColor: augmentColor,\n // Used by the functions below to shift a color's luminance by approximately\n // two indexes within its tonal palette.\n // E.g., shift from Red 500 to Red 300 or Red 700.\n tonalOffset: tonalOffset\n }, types[type]), other);\n return paletteOutput;\n}","import _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport { deepmerge } from '@material-ui/utils';\n\nfunction round(value) {\n return Math.round(value * 1e5) / 1e5;\n}\n\nvar caseAllCaps = {\n textTransform: 'uppercase'\n};\nvar defaultFontFamily = '\"Roboto\", \"Helvetica\", \"Arial\", sans-serif';\n/**\n * @see @link{https://material.io/design/typography/the-type-system.html}\n * @see @link{https://material.io/design/typography/understanding-typography.html}\n */\n\nexport default function createTypography(palette, typography) {\n var _ref = typeof typography === 'function' ? typography(palette) : typography,\n _ref$fontFamily = _ref.fontFamily,\n fontFamily = _ref$fontFamily === void 0 ? defaultFontFamily : _ref$fontFamily,\n _ref$fontSize = _ref.fontSize,\n fontSize = _ref$fontSize === void 0 ? 14 : _ref$fontSize,\n _ref$fontWeightLight = _ref.fontWeightLight,\n fontWeightLight = _ref$fontWeightLight === void 0 ? 300 : _ref$fontWeightLight,\n _ref$fontWeightRegula = _ref.fontWeightRegular,\n fontWeightRegular = _ref$fontWeightRegula === void 0 ? 400 : _ref$fontWeightRegula,\n _ref$fontWeightMedium = _ref.fontWeightMedium,\n fontWeightMedium = _ref$fontWeightMedium === void 0 ? 500 : _ref$fontWeightMedium,\n _ref$fontWeightBold = _ref.fontWeightBold,\n fontWeightBold = _ref$fontWeightBold === void 0 ? 700 : _ref$fontWeightBold,\n _ref$htmlFontSize = _ref.htmlFontSize,\n htmlFontSize = _ref$htmlFontSize === void 0 ? 16 : _ref$htmlFontSize,\n allVariants = _ref.allVariants,\n pxToRem2 = _ref.pxToRem,\n other = _objectWithoutProperties(_ref, [\"fontFamily\", \"fontSize\", \"fontWeightLight\", \"fontWeightRegular\", \"fontWeightMedium\", \"fontWeightBold\", \"htmlFontSize\", \"allVariants\", \"pxToRem\"]);\n\n if (process.env.NODE_ENV !== 'production') {\n if (typeof fontSize !== 'number') {\n console.error('Material-UI: `fontSize` is required to be a number.');\n }\n\n if (typeof htmlFontSize !== 'number') {\n console.error('Material-UI: `htmlFontSize` is required to be a number.');\n }\n }\n\n var coef = fontSize / 14;\n\n var pxToRem = pxToRem2 || function (size) {\n return \"\".concat(size / htmlFontSize * coef, \"rem\");\n };\n\n var buildVariant = function buildVariant(fontWeight, size, lineHeight, letterSpacing, casing) {\n return _extends({\n fontFamily: fontFamily,\n fontWeight: fontWeight,\n fontSize: pxToRem(size),\n // Unitless following https://meyerweb.com/eric/thoughts/2006/02/08/unitless-line-heights/\n lineHeight: lineHeight\n }, fontFamily === defaultFontFamily ? {\n letterSpacing: \"\".concat(round(letterSpacing / size), \"em\")\n } : {}, casing, allVariants);\n };\n\n var variants = {\n h1: buildVariant(fontWeightLight, 96, 1.167, -1.5),\n h2: buildVariant(fontWeightLight, 60, 1.2, -0.5),\n h3: buildVariant(fontWeightRegular, 48, 1.167, 0),\n h4: buildVariant(fontWeightRegular, 34, 1.235, 0.25),\n h5: buildVariant(fontWeightRegular, 24, 1.334, 0),\n h6: buildVariant(fontWeightMedium, 20, 1.6, 0.15),\n subtitle1: buildVariant(fontWeightRegular, 16, 1.75, 0.15),\n subtitle2: buildVariant(fontWeightMedium, 14, 1.57, 0.1),\n body1: buildVariant(fontWeightRegular, 16, 1.5, 0.15),\n body2: buildVariant(fontWeightRegular, 14, 1.43, 0.15),\n button: buildVariant(fontWeightMedium, 14, 1.75, 0.4, caseAllCaps),\n caption: buildVariant(fontWeightRegular, 12, 1.66, 0.4),\n overline: buildVariant(fontWeightRegular, 12, 2.66, 1, caseAllCaps)\n };\n return deepmerge(_extends({\n htmlFontSize: htmlFontSize,\n pxToRem: pxToRem,\n round: round,\n // TODO v5: remove\n fontFamily: fontFamily,\n fontSize: fontSize,\n fontWeightLight: fontWeightLight,\n fontWeightRegular: fontWeightRegular,\n fontWeightMedium: fontWeightMedium,\n fontWeightBold: fontWeightBold\n }, variants), other, {\n clone: false // No need to clone deep\n\n });\n}","var shadowKeyUmbraOpacity = 0.2;\nvar shadowKeyPenumbraOpacity = 0.14;\nvar shadowAmbientShadowOpacity = 0.12;\n\nfunction createShadow() {\n return [\"\".concat(arguments.length <= 0 ? undefined : arguments[0], \"px \").concat(arguments.length <= 1 ? undefined : arguments[1], \"px \").concat(arguments.length <= 2 ? undefined : arguments[2], \"px \").concat(arguments.length <= 3 ? undefined : arguments[3], \"px rgba(0,0,0,\").concat(shadowKeyUmbraOpacity, \")\"), \"\".concat(arguments.length <= 4 ? undefined : arguments[4], \"px \").concat(arguments.length <= 5 ? undefined : arguments[5], \"px \").concat(arguments.length <= 6 ? undefined : arguments[6], \"px \").concat(arguments.length <= 7 ? undefined : arguments[7], \"px rgba(0,0,0,\").concat(shadowKeyPenumbraOpacity, \")\"), \"\".concat(arguments.length <= 8 ? undefined : arguments[8], \"px \").concat(arguments.length <= 9 ? undefined : arguments[9], \"px \").concat(arguments.length <= 10 ? undefined : arguments[10], \"px \").concat(arguments.length <= 11 ? undefined : arguments[11], \"px rgba(0,0,0,\").concat(shadowAmbientShadowOpacity, \")\")].join(',');\n} // Values from https://github.com/material-components/material-components-web/blob/be8747f94574669cb5e7add1a7c54fa41a89cec7/packages/mdc-elevation/_variables.scss\n\n\nvar shadows = ['none', createShadow(0, 2, 1, -1, 0, 1, 1, 0, 0, 1, 3, 0), createShadow(0, 3, 1, -2, 0, 2, 2, 0, 0, 1, 5, 0), createShadow(0, 3, 3, -2, 0, 3, 4, 0, 0, 1, 8, 0), createShadow(0, 2, 4, -1, 0, 4, 5, 0, 0, 1, 10, 0), createShadow(0, 3, 5, -1, 0, 5, 8, 0, 0, 1, 14, 0), createShadow(0, 3, 5, -1, 0, 6, 10, 0, 0, 1, 18, 0), createShadow(0, 4, 5, -2, 0, 7, 10, 1, 0, 2, 16, 1), createShadow(0, 5, 5, -3, 0, 8, 10, 1, 0, 3, 14, 2), createShadow(0, 5, 6, -3, 0, 9, 12, 1, 0, 3, 16, 2), createShadow(0, 6, 6, -3, 0, 10, 14, 1, 0, 4, 18, 3), createShadow(0, 6, 7, -4, 0, 11, 15, 1, 0, 4, 20, 3), createShadow(0, 7, 8, -4, 0, 12, 17, 2, 0, 5, 22, 4), createShadow(0, 7, 8, -4, 0, 13, 19, 2, 0, 5, 24, 4), createShadow(0, 7, 9, -4, 0, 14, 21, 2, 0, 5, 26, 4), createShadow(0, 8, 9, -5, 0, 15, 22, 2, 0, 6, 28, 5), createShadow(0, 8, 10, -5, 0, 16, 24, 2, 0, 6, 30, 5), createShadow(0, 8, 11, -5, 0, 17, 26, 2, 0, 6, 32, 5), createShadow(0, 9, 11, -5, 0, 18, 28, 2, 0, 7, 34, 6), createShadow(0, 9, 12, -6, 0, 19, 29, 2, 0, 7, 36, 6), createShadow(0, 10, 13, -6, 0, 20, 31, 3, 0, 8, 38, 7), createShadow(0, 10, 13, -6, 0, 21, 33, 3, 0, 8, 40, 7), createShadow(0, 10, 14, -6, 0, 22, 35, 3, 0, 8, 42, 7), createShadow(0, 11, 14, -7, 0, 23, 36, 3, 0, 9, 44, 8), createShadow(0, 11, 15, -7, 0, 24, 38, 3, 0, 9, 46, 8)];\nexport default shadows;","var shape = {\n borderRadius: 4\n};\nexport default shape;","import { deepmerge } from '@material-ui/utils';\n\nfunction merge(acc, item) {\n if (!item) {\n return acc;\n }\n\n return deepmerge(acc, item, {\n clone: false // No need to clone deep, it's way faster.\n\n });\n}\n\nexport default merge;","import _toConsumableArray from \"@babel/runtime/helpers/esm/toConsumableArray\";\nimport _extends from \"@babel/runtime/helpers/esm/extends\";\nimport _typeof from \"@babel/runtime/helpers/esm/typeof\";\nimport PropTypes from 'prop-types';\nimport merge from './merge'; // The breakpoint **start** at this value.\n// For instance with the first breakpoint xs: [xs, sm[.\n\nvar values = {\n xs: 0,\n sm: 600,\n md: 960,\n lg: 1280,\n xl: 1920\n};\nvar defaultBreakpoints = {\n // Sorted ASC by size. That's important.\n // It can't be configured as it's used statically for propTypes.\n keys: ['xs', 'sm', 'md', 'lg', 'xl'],\n up: function up(key) {\n return \"@media (min-width:\".concat(values[key], \"px)\");\n }\n};\nexport function handleBreakpoints(props, propValue, styleFromPropValue) {\n if (process.env.NODE_ENV !== 'production') {\n if (!props.theme) {\n console.error('Material-UI: You are calling a style function without a theme value.');\n }\n }\n\n if (Array.isArray(propValue)) {\n var themeBreakpoints = props.theme.breakpoints || defaultBreakpoints;\n return propValue.reduce(function (acc, item, index) {\n acc[themeBreakpoints.up(themeBreakpoints.keys[index])] = styleFromPropValue(propValue[index]);\n return acc;\n }, {});\n }\n\n if (_typeof(propValue) === 'object') {\n var _themeBreakpoints = props.theme.breakpoints || defaultBreakpoints;\n\n return Object.keys(propValue).reduce(function (acc, breakpoint) {\n acc[_themeBreakpoints.up(breakpoint)] = styleFromPropValue(propValue[breakpoint]);\n return acc;\n }, {});\n }\n\n var output = styleFromPropValue(propValue);\n return output;\n}\n\nfunction breakpoints(styleFunction) {\n var newStyleFunction = function newStyleFunction(props) {\n var base = styleFunction(props);\n var themeBreakpoints = props.theme.breakpoints || defaultBreakpoints;\n var extended = themeBreakpoints.keys.reduce(function (acc, key) {\n if (props[key]) {\n acc = acc || {};\n acc[themeBreakpoints.up(key)] = styleFunction(_extends({\n theme: props.theme\n }, props[key]));\n }\n\n return acc;\n }, null);\n return merge(base, extended);\n };\n\n newStyleFunction.propTypes = process.env.NODE_ENV !== 'production' ? _extends(_extends({}, styleFunction.propTypes), {}, {\n xs: PropTypes.object,\n sm: PropTypes.object,\n md: PropTypes.object,\n lg: PropTypes.object,\n xl: PropTypes.object\n }) : {};\n newStyleFunction.filterProps = ['xs', 'sm', 'md', 'lg', 'xl'].concat(_toConsumableArray(styleFunction.filterProps));\n return newStyleFunction;\n}\n\nexport default breakpoints;","import _slicedToArray from \"@babel/runtime/helpers/esm/slicedToArray\";\nimport responsivePropType from './responsivePropType';\nimport { handleBreakpoints } from './breakpoints';\nimport merge from './merge';\nimport memoize from './memoize';\nvar properties = {\n m: 'margin',\n p: 'padding'\n};\nvar directions = {\n t: 'Top',\n r: 'Right',\n b: 'Bottom',\n l: 'Left',\n x: ['Left', 'Right'],\n y: ['Top', 'Bottom']\n};\nvar aliases = {\n marginX: 'mx',\n marginY: 'my',\n paddingX: 'px',\n paddingY: 'py'\n}; // memoize() impact:\n// From 300,000 ops/sec\n// To 350,000 ops/sec\n\nvar getCssProperties = memoize(function (prop) {\n // It's not a shorthand notation.\n if (prop.length > 2) {\n if (aliases[prop]) {\n prop = aliases[prop];\n } else {\n return [prop];\n }\n }\n\n var _prop$split = prop.split(''),\n _prop$split2 = _slicedToArray(_prop$split, 2),\n a = _prop$split2[0],\n b = _prop$split2[1];\n\n var property = properties[a];\n var direction = directions[b] || '';\n return Array.isArray(direction) ? direction.map(function (dir) {\n return property + dir;\n }) : [property + direction];\n});\nvar spacingKeys = ['m', 'mt', 'mr', 'mb', 'ml', 'mx', 'my', 'p', 'pt', 'pr', 'pb', 'pl', 'px', 'py', 'margin', 'marginTop', 'marginRight', 'marginBottom', 'marginLeft', 'marginX', 'marginY', 'padding', 'paddingTop', 'paddingRight', 'paddingBottom', 'paddingLeft', 'paddingX', 'paddingY'];\nexport function createUnarySpacing(theme) {\n var themeSpacing = theme.spacing || 8;\n\n if (typeof themeSpacing === 'number') {\n return function (abs) {\n if (process.env.NODE_ENV !== 'production') {\n if (typeof abs !== 'number') {\n console.error(\"Material-UI: Expected spacing argument to be a number, got \".concat(abs, \".\"));\n }\n }\n\n return themeSpacing * abs;\n };\n }\n\n if (Array.isArray(themeSpacing)) {\n return function (abs) {\n if (process.env.NODE_ENV !== 'production') {\n if (abs > themeSpacing.length - 1) {\n console.error([\"Material-UI: The value provided (\".concat(abs, \") overflows.\"), \"The supported values are: \".concat(JSON.stringify(themeSpacing), \".\"), \"\".concat(abs, \" > \").concat(themeSpacing.length - 1, \", you need to add the missing values.\")].join('\\n'));\n }\n }\n\n return themeSpacing[abs];\n };\n }\n\n if (typeof themeSpacing === 'function') {\n return themeSpacing;\n }\n\n if (process.env.NODE_ENV !== 'production') {\n console.error([\"Material-UI: The `theme.spacing` value (\".concat(themeSpacing, \") is invalid.\"), 'It should be a number, an array or a function.'].join('\\n'));\n }\n\n return function () {\n return undefined;\n };\n}\n\nfunction getValue(transformer, propValue) {\n if (typeof propValue === 'string') {\n return propValue;\n }\n\n var abs = Math.abs(propValue);\n var transformed = transformer(abs);\n\n if (propValue >= 0) {\n return transformed;\n }\n\n if (typeof transformed === 'number') {\n return -transformed;\n }\n\n return \"-\".concat(transformed);\n}\n\nfunction getStyleFromPropValue(cssProperties, transformer) {\n return function (propValue) {\n return cssProperties.reduce(function (acc, cssProperty) {\n acc[cssProperty] = getValue(transformer, propValue);\n return acc;\n }, {});\n };\n}\n\nfunction spacing(props) {\n var theme = props.theme;\n var transformer = createUnarySpacing(theme);\n return Object.keys(props).map(function (prop) {\n // Using a hash computation over an array iteration could be faster, but with only 28 items,\n // it's doesn't worth the bundle size.\n if (spacingKeys.indexOf(prop) === -1) {\n return null;\n }\n\n var cssProperties = getCssProperties(prop);\n var styleFromPropValue = getStyleFromPropValue(cssProperties, transformer);\n var propValue = props[prop];\n return handleBreakpoints(props, propValue, styleFromPropValue);\n }).reduce(merge, {});\n}\n\nspacing.propTypes = process.env.NODE_ENV !== 'production' ? spacingKeys.reduce(function (obj, key) {\n obj[key] = responsivePropType;\n return obj;\n}, {}) : {};\nspacing.filterProps = spacingKeys;\nexport default spacing;","export default function memoize(fn) {\n var cache = {};\n return function (arg) {\n if (cache[arg] === undefined) {\n cache[arg] = fn(arg);\n }\n\n return cache[arg];\n };\n}","import { createUnarySpacing } from '@material-ui/system';\nvar warnOnce;\nexport default function createSpacing() {\n var spacingInput = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 8;\n\n // Already transformed.\n if (spacingInput.mui) {\n return spacingInput;\n } // Material Design layouts are visually balanced. Most measurements align to an 8dp grid applied, which aligns both spacing and the overall layout.\n // Smaller components, such as icons and type, can align to a 4dp grid.\n // https://material.io/design/layout/understanding-layout.html#usage\n\n\n var transform = createUnarySpacing({\n spacing: spacingInput\n });\n\n var spacing = function spacing() {\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n if (process.env.NODE_ENV !== 'production') {\n if (!(args.length <= 4)) {\n console.error(\"Material-UI: Too many arguments provided, expected between 0 and 4, got \".concat(args.length));\n }\n }\n\n if (args.length === 0) {\n return transform(1);\n }\n\n if (args.length === 1) {\n return transform(args[0]);\n }\n\n return args.map(function (argument) {\n if (typeof argument === 'string') {\n return argument;\n }\n\n var output = transform(argument);\n return typeof output === 'number' ? \"\".concat(output, \"px\") : output;\n }).join(' ');\n }; // Backward compatibility, to remove in v5.\n\n\n Object.defineProperty(spacing, 'unit', {\n get: function get() {\n if (process.env.NODE_ENV !== 'production') {\n if (!warnOnce || process.env.NODE_ENV === 'test') {\n console.error(['Material-UI: theme.spacing.unit usage has been deprecated.', 'It will be removed in v5.', 'You can replace `theme.spacing.unit * y` with `theme.spacing(y)`.', '', 'You can use the `https://github.com/mui-org/material-ui/tree/master/packages/material-ui-codemod/README.md#theme-spacing-api` migration helper to make the process smoother.'].join('\\n'));\n }\n\n warnOnce = true;\n }\n\n return spacingInput;\n }\n });\n spacing.mui = true;\n return spacing;\n}","// We need to centralize the zIndex definitions as they work\n// like global values in the browser.\nvar zIndex = {\n mobileStepper: 1000,\n speedDial: 1050,\n appBar: 1100,\n drawer: 1200,\n modal: 1300,\n snackbar: 1400,\n tooltip: 1500\n};\nexport default zIndex;","import _defineProperty from \"@babel/runtime/helpers/esm/defineProperty\";\nimport _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\nimport { deepmerge } from '@material-ui/utils';\nimport createBreakpoints from './createBreakpoints';\nimport createMixins from './createMixins';\nimport createPalette from './createPalette';\nimport createTypography from './createTypography';\nimport shadows from './shadows';\nimport shape from './shape';\nimport createSpacing from './createSpacing';\nimport transitions from './transitions';\nimport zIndex from './zIndex';\n\nfunction createMuiTheme() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n\n var _options$breakpoints = options.breakpoints,\n breakpointsInput = _options$breakpoints === void 0 ? {} : _options$breakpoints,\n _options$mixins = options.mixins,\n mixinsInput = _options$mixins === void 0 ? {} : _options$mixins,\n _options$palette = options.palette,\n paletteInput = _options$palette === void 0 ? {} : _options$palette,\n spacingInput = options.spacing,\n _options$typography = options.typography,\n typographyInput = _options$typography === void 0 ? {} : _options$typography,\n other = _objectWithoutProperties(options, [\"breakpoints\", \"mixins\", \"palette\", \"spacing\", \"typography\"]);\n\n var palette = createPalette(paletteInput);\n var breakpoints = createBreakpoints(breakpointsInput);\n var spacing = createSpacing(spacingInput);\n var muiTheme = deepmerge({\n breakpoints: breakpoints,\n direction: 'ltr',\n mixins: createMixins(breakpoints, spacing, mixinsInput),\n overrides: {},\n // Inject custom styles\n palette: palette,\n props: {},\n // Provide default props\n shadows: shadows,\n typography: createTypography(palette, typographyInput),\n spacing: spacing,\n shape: shape,\n transitions: transitions,\n zIndex: zIndex\n }, other);\n\n for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n args[_key - 1] = arguments[_key];\n }\n\n muiTheme = args.reduce(function (acc, argument) {\n return deepmerge(acc, argument);\n }, muiTheme);\n\n if (process.env.NODE_ENV !== 'production') {\n var pseudoClasses = ['checked', 'disabled', 'error', 'focused', 'focusVisible', 'required', 'expanded', 'selected'];\n\n var traverse = function traverse(node, parentKey) {\n var depth = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 1;\n var key; // eslint-disable-next-line guard-for-in, no-restricted-syntax\n\n for (key in node) {\n var child = node[key];\n\n if (depth === 1) {\n if (key.indexOf('Mui') === 0 && child) {\n traverse(child, key, depth + 1);\n }\n } else if (pseudoClasses.indexOf(key) !== -1 && Object.keys(child).length > 0) {\n if (process.env.NODE_ENV !== 'production') {\n console.error([\"Material-UI: The `\".concat(parentKey, \"` component increases \") + \"the CSS specificity of the `\".concat(key, \"` internal state.\"), 'You can not override it like this: ', JSON.stringify(node, null, 2), '', 'Instead, you need to use the $ruleName syntax:', JSON.stringify({\n root: _defineProperty({}, \"&$\".concat(key), child)\n }, null, 2), '', 'https://material-ui.com/r/pseudo-classes-guide'].join('\\n'));\n } // Remove the style to prevent global conflicts.\n\n\n node[key] = {};\n }\n }\n };\n\n traverse(muiTheme.overrides);\n }\n\n return muiTheme;\n}\n\nexport default createMuiTheme;","'use strict';\n\nvar reactIs = require('react-is');\n\n/**\n * Copyright 2015, Yahoo! Inc.\n * Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.\n */\nvar REACT_STATICS = {\n childContextTypes: true,\n contextType: true,\n contextTypes: true,\n defaultProps: true,\n displayName: true,\n getDefaultProps: true,\n getDerivedStateFromError: true,\n getDerivedStateFromProps: true,\n mixins: true,\n propTypes: true,\n type: true\n};\nvar KNOWN_STATICS = {\n name: true,\n length: true,\n prototype: true,\n caller: true,\n callee: true,\n arguments: true,\n arity: true\n};\nvar FORWARD_REF_STATICS = {\n '$$typeof': true,\n render: true,\n defaultProps: true,\n displayName: true,\n propTypes: true\n};\nvar MEMO_STATICS = {\n '$$typeof': true,\n compare: true,\n defaultProps: true,\n displayName: true,\n propTypes: true,\n type: true\n};\nvar TYPE_STATICS = {};\nTYPE_STATICS[reactIs.ForwardRef] = FORWARD_REF_STATICS;\nTYPE_STATICS[reactIs.Memo] = MEMO_STATICS;\n\nfunction getStatics(component) {\n // React v16.11 and below\n if (reactIs.isMemo(component)) {\n return MEMO_STATICS;\n } // React v16.12 and above\n\n\n return TYPE_STATICS[component['$$typeof']] || REACT_STATICS;\n}\n\nvar defineProperty = Object.defineProperty;\nvar getOwnPropertyNames = Object.getOwnPropertyNames;\nvar getOwnPropertySymbols = Object.getOwnPropertySymbols;\nvar getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;\nvar getPrototypeOf = Object.getPrototypeOf;\nvar objectPrototype = Object.prototype;\nfunction hoistNonReactStatics(targetComponent, sourceComponent, blacklist) {\n if (typeof sourceComponent !== 'string') {\n // don't hoist over string (html) components\n if (objectPrototype) {\n var inheritedComponent = getPrototypeOf(sourceComponent);\n\n if (inheritedComponent && inheritedComponent !== objectPrototype) {\n hoistNonReactStatics(targetComponent, inheritedComponent, blacklist);\n }\n }\n\n var keys = getOwnPropertyNames(sourceComponent);\n\n if (getOwnPropertySymbols) {\n keys = keys.concat(getOwnPropertySymbols(sourceComponent));\n }\n\n var targetStatics = getStatics(targetComponent);\n var sourceStatics = getStatics(sourceComponent);\n\n for (var i = 0; i < keys.length; ++i) {\n var key = keys[i];\n\n if (!KNOWN_STATICS[key] && !(blacklist && blacklist[key]) && !(sourceStatics && sourceStatics[key]) && !(targetStatics && targetStatics[key])) {\n var descriptor = getOwnPropertyDescriptor(sourceComponent, key);\n\n try {\n // Avoid failures from read-only properties\n defineProperty(targetComponent, key, descriptor);\n } catch (e) {}\n }\n }\n }\n\n return targetComponent;\n}\n\nmodule.exports = hoistNonReactStatics;\n","import arrayWithHoles from \"./arrayWithHoles\";\nimport iterableToArrayLimit from \"./iterableToArrayLimit\";\nimport nonIterableRest from \"./nonIterableRest\";\nexport default function _slicedToArray(arr, i) {\n return arrayWithHoles(arr) || iterableToArrayLimit(arr, i) || nonIterableRest();\n}","export default function _arrayWithHoles(arr) {\n if (Array.isArray(arr)) return arr;\n}","export default function _iterableToArrayLimit(arr, i) {\n if (!(Symbol.iterator in Object(arr) || Object.prototype.toString.call(arr) === \"[object Arguments]\")) {\n return;\n }\n\n var _arr = [];\n var _n = true;\n var _d = false;\n var _e = undefined;\n\n try {\n for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {\n _arr.push(_s.value);\n\n if (i && _arr.length === i) break;\n }\n } catch (err) {\n _d = true;\n _e = err;\n } finally {\n try {\n if (!_n && _i[\"return\"] != null) _i[\"return\"]();\n } finally {\n if (_d) throw _e;\n }\n }\n\n return _arr;\n}","export default function _nonIterableRest() {\n throw new TypeError(\"Invalid attempt to destructure non-iterable instance\");\n}","function _defineProperties(target, props) {\n for (var i = 0; i < props.length; i++) {\n var descriptor = props[i];\n descriptor.enumerable = descriptor.enumerable || false;\n descriptor.configurable = true;\n if (\"value\" in descriptor) descriptor.writable = true;\n Object.defineProperty(target, descriptor.key, descriptor);\n }\n}\n\nexport default function _createClass(Constructor, protoProps, staticProps) {\n if (protoProps) _defineProperties(Constructor.prototype, protoProps);\n if (staticProps) _defineProperties(Constructor, staticProps);\n return Constructor;\n}","import React from 'react';\nexport default React.createContext(null);","export default function _typeof(obj) {\n if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") {\n _typeof = function _typeof(obj) {\n return typeof obj;\n };\n } else {\n _typeof = function _typeof(obj) {\n return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj;\n };\n }\n\n return _typeof(obj);\n}","var isProduction = process.env.NODE_ENV === 'production';\nfunction warning(condition, message) {\n if (!isProduction) {\n if (condition) {\n return;\n }\n\n var text = \"Warning: \" + message;\n\n if (typeof console !== 'undefined') {\n console.warn(text);\n }\n\n try {\n throw Error(text);\n } catch (x) {}\n }\n}\n\nexport default warning;\n","var g;\n\n// This works in non-strict mode\ng = (function() {\n\treturn this;\n})();\n\ntry {\n\t// This works if eval is allowed (see CSP)\n\tg = g || new Function(\"return this\")();\n} catch (e) {\n\t// This works if the window reference is available\n\tif (typeof window === \"object\") g = window;\n}\n\n// g can still be undefined, but nothing to do about it...\n// We return undefined, instead of nothing here, so it's\n// easier to handle this case. if(!global) { ...}\n\nmodule.exports = g;\n","'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.default = isRequiredForA11y;\nfunction isRequiredForA11y(validator) {\n return function validate(props, propName, componentName, location, propFullName) {\n var componentNameSafe = componentName || '<>';\n var propFullNameSafe = propFullName || propName;\n\n if (props[propName] == null) {\n return new Error('The ' + location + ' `' + propFullNameSafe + '` is required to make ' + ('`' + componentNameSafe + '` accessible for users of assistive ') + 'technologies such as screen readers.');\n }\n\n for (var _len = arguments.length, args = Array(_len > 5 ? _len - 5 : 0), _key = 5; _key < _len; _key++) {\n args[_key - 5] = arguments[_key];\n }\n\n return validator.apply(undefined, [props, propName, componentName, location, propFullName].concat(args));\n };\n}\nmodule.exports = exports['default'];","import _objectWithoutProperties from \"@babel/runtime/helpers/esm/objectWithoutProperties\";\n// Follow https://material.google.com/motion/duration-easing.html#duration-easing-natural-easing-curves\n// to learn the context in which each easing should be used.\nexport var easing = {\n // This is the most common easing curve.\n easeInOut: 'cubic-bezier(0.4, 0, 0.2, 1)',\n // Objects enter the screen at full velocity from off-screen and\n // slowly decelerate to a resting point.\n easeOut: 'cubic-bezier(0.0, 0, 0.2, 1)',\n // Objects leave the screen at full velocity. They do not decelerate when off-screen.\n easeIn: 'cubic-bezier(0.4, 0, 1, 1)',\n // The sharp curve is used by objects that may return to the screen at any time.\n sharp: 'cubic-bezier(0.4, 0, 0.6, 1)'\n}; // Follow https://material.io/guidelines/motion/duration-easing.html#duration-easing-common-durations\n// to learn when use what timing\n\nexport var duration = {\n shortest: 150,\n shorter: 200,\n short: 250,\n // most basic recommended timing\n standard: 300,\n // this is to be used in complex animations\n complex: 375,\n // recommended when something is entering screen\n enteringScreen: 225,\n // recommended when something is leaving screen\n leavingScreen: 195\n};\n\nfunction formatMs(milliseconds) {\n return \"\".concat(Math.round(milliseconds), \"ms\");\n}\n/**\n * @param {string|Array} props\n * @param {object} param\n * @param {string} param.prop\n * @param {number} param.duration\n * @param {string} param.easing\n * @param {number} param.delay\n */\n\n\nexport default {\n easing: easing,\n duration: duration,\n create: function create() {\n var props = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ['all'];\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n\n var _options$duration = options.duration,\n durationOption = _options$duration === void 0 ? duration.standard : _options$duration,\n _options$easing = options.easing,\n easingOption = _options$easing === void 0 ? easing.easeInOut : _options$easing,\n _options$delay = options.delay,\n delay = _options$delay === void 0 ? 0 : _options$delay,\n other = _objectWithoutProperties(options, [\"duration\", \"easing\", \"delay\"]);\n\n if (process.env.NODE_ENV !== 'production') {\n var isString = function isString(value) {\n return typeof value === 'string';\n };\n\n var isNumber = function isNumber(value) {\n return !isNaN(parseFloat(value));\n };\n\n if (!isString(props) && !Array.isArray(props)) {\n console.error('Material-UI: Argument \"props\" must be a string or Array.');\n }\n\n if (!isNumber(durationOption) && !isString(durationOption)) {\n console.error(\"Material-UI: Argument \\\"duration\\\" must be a number or a string but found \".concat(durationOption, \".\"));\n }\n\n if (!isString(easingOption)) {\n console.error('Material-UI: Argument \"easing\" must be a string.');\n }\n\n if (!isNumber(delay) && !isString(delay)) {\n console.error('Material-UI: Argument \"delay\" must be a number or a string.');\n }\n\n if (Object.keys(other).length !== 0) {\n console.error(\"Material-UI: Unrecognized argument(s) [\".concat(Object.keys(other).join(','), \"].\"));\n }\n }\n\n return (Array.isArray(props) ? props : [props]).map(function (animatedProp) {\n return \"\".concat(animatedProp, \" \").concat(typeof durationOption === 'string' ? durationOption : formatMs(durationOption), \" \").concat(easingOption, \" \").concat(typeof delay === 'string' ? delay : formatMs(delay));\n }).join(',');\n },\n getAutoHeightDuration: function getAutoHeightDuration(height) {\n if (!height) {\n return 0;\n }\n\n var constant = height / 36; // https://www.wolframalpha.com/input/?i=(4+%2B+15+*+(x+%2F+36+)+**+0.25+%2B+(x+%2F+36)+%2F+5)+*+10\n\n return Math.round((4 + 15 * Math.pow(constant, 0.25) + constant / 5) * 10);\n }\n};","/**!\n * @fileOverview Kickass library to create and place poppers near their reference elements.\n * @version 1.16.0\n * @license\n * Copyright (c) 2016 Federico Zivolo and contributors\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in all\n * copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n * SOFTWARE.\n */\nvar isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined' && typeof navigator !== 'undefined';\n\nvar timeoutDuration = function () {\n var longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];\n for (var i = 0; i < longerTimeoutBrowsers.length; i += 1) {\n if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {\n return 1;\n }\n }\n return 0;\n}();\n\nfunction microtaskDebounce(fn) {\n var called = false;\n return function () {\n if (called) {\n return;\n }\n called = true;\n window.Promise.resolve().then(function () {\n called = false;\n fn();\n });\n };\n}\n\nfunction taskDebounce(fn) {\n var scheduled = false;\n return function () {\n if (!scheduled) {\n scheduled = true;\n setTimeout(function () {\n scheduled = false;\n fn();\n }, timeoutDuration);\n }\n };\n}\n\nvar supportsMicroTasks = isBrowser && window.Promise;\n\n/**\n* Create a debounced version of a method, that's asynchronously deferred\n* but called in the minimum time possible.\n*\n* @method\n* @memberof Popper.Utils\n* @argument {Function} fn\n* @returns {Function}\n*/\nvar debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;\n\n/**\n * Check if the given variable is a function\n * @method\n * @memberof Popper.Utils\n * @argument {Any} functionToCheck - variable to check\n * @returns {Boolean} answer to: is a function?\n */\nfunction isFunction(functionToCheck) {\n var getType = {};\n return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';\n}\n\n/**\n * Get CSS computed property of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Eement} element\n * @argument {String} property\n */\nfunction getStyleComputedProperty(element, property) {\n if (element.nodeType !== 1) {\n return [];\n }\n // NOTE: 1 DOM access here\n var window = element.ownerDocument.defaultView;\n var css = window.getComputedStyle(element, null);\n return property ? css[property] : css;\n}\n\n/**\n * Returns the parentNode or the host of the element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} parent\n */\nfunction getParentNode(element) {\n if (element.nodeName === 'HTML') {\n return element;\n }\n return element.parentNode || element.host;\n}\n\n/**\n * Returns the scrolling parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} scroll parent\n */\nfunction getScrollParent(element) {\n // Return body, `getScroll` will take care to get the correct `scrollTop` from it\n if (!element) {\n return document.body;\n }\n\n switch (element.nodeName) {\n case 'HTML':\n case 'BODY':\n return element.ownerDocument.body;\n case '#document':\n return element.body;\n }\n\n // Firefox want us to check `-x` and `-y` variations as well\n\n var _getStyleComputedProp = getStyleComputedProperty(element),\n overflow = _getStyleComputedProp.overflow,\n overflowX = _getStyleComputedProp.overflowX,\n overflowY = _getStyleComputedProp.overflowY;\n\n if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) {\n return element;\n }\n\n return getScrollParent(getParentNode(element));\n}\n\n/**\n * Returns the reference node of the reference object, or the reference object itself.\n * @method\n * @memberof Popper.Utils\n * @param {Element|Object} reference - the reference element (the popper will be relative to this)\n * @returns {Element} parent\n */\nfunction getReferenceNode(reference) {\n return reference && reference.referenceNode ? reference.referenceNode : reference;\n}\n\nvar isIE11 = isBrowser && !!(window.MSInputMethodContext && document.documentMode);\nvar isIE10 = isBrowser && /MSIE 10/.test(navigator.userAgent);\n\n/**\n * Determines if the browser is Internet Explorer\n * @method\n * @memberof Popper.Utils\n * @param {Number} version to check\n * @returns {Boolean} isIE\n */\nfunction isIE(version) {\n if (version === 11) {\n return isIE11;\n }\n if (version === 10) {\n return isIE10;\n }\n return isIE11 || isIE10;\n}\n\n/**\n * Returns the offset parent of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} offset parent\n */\nfunction getOffsetParent(element) {\n if (!element) {\n return document.documentElement;\n }\n\n var noOffsetParent = isIE(10) ? document.body : null;\n\n // NOTE: 1 DOM access here\n var offsetParent = element.offsetParent || null;\n // Skip hidden elements which don't have an offsetParent\n while (offsetParent === noOffsetParent && element.nextElementSibling) {\n offsetParent = (element = element.nextElementSibling).offsetParent;\n }\n\n var nodeName = offsetParent && offsetParent.nodeName;\n\n if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {\n return element ? element.ownerDocument.documentElement : document.documentElement;\n }\n\n // .offsetParent will return the closest TH, TD or TABLE in case\n // no offsetParent is present, I hate this job...\n if (['TH', 'TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {\n return getOffsetParent(offsetParent);\n }\n\n return offsetParent;\n}\n\nfunction isOffsetContainer(element) {\n var nodeName = element.nodeName;\n\n if (nodeName === 'BODY') {\n return false;\n }\n return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;\n}\n\n/**\n * Finds the root node (document, shadowDOM root) of the given element\n * @method\n * @memberof Popper.Utils\n * @argument {Element} node\n * @returns {Element} root node\n */\nfunction getRoot(node) {\n if (node.parentNode !== null) {\n return getRoot(node.parentNode);\n }\n\n return node;\n}\n\n/**\n * Finds the offset parent common to the two provided nodes\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element1\n * @argument {Element} element2\n * @returns {Element} common offset parent\n */\nfunction findCommonOffsetParent(element1, element2) {\n // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {\n return document.documentElement;\n }\n\n // Here we make sure to give as \"start\" the element that comes first in the DOM\n var order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;\n var start = order ? element1 : element2;\n var end = order ? element2 : element1;\n\n // Get common ancestor container\n var range = document.createRange();\n range.setStart(start, 0);\n range.setEnd(end, 0);\n var commonAncestorContainer = range.commonAncestorContainer;\n\n // Both nodes are inside #document\n\n if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {\n if (isOffsetContainer(commonAncestorContainer)) {\n return commonAncestorContainer;\n }\n\n return getOffsetParent(commonAncestorContainer);\n }\n\n // one of the nodes is inside shadowDOM, find which one\n var element1root = getRoot(element1);\n if (element1root.host) {\n return findCommonOffsetParent(element1root.host, element2);\n } else {\n return findCommonOffsetParent(element1, getRoot(element2).host);\n }\n}\n\n/**\n * Gets the scroll value of the given element in the given side (top and left)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {String} side `top` or `left`\n * @returns {number} amount of scrolled pixels\n */\nfunction getScroll(element) {\n var side = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'top';\n\n var upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';\n var nodeName = element.nodeName;\n\n if (nodeName === 'BODY' || nodeName === 'HTML') {\n var html = element.ownerDocument.documentElement;\n var scrollingElement = element.ownerDocument.scrollingElement || html;\n return scrollingElement[upperSide];\n }\n\n return element[upperSide];\n}\n\n/*\n * Sum or subtract the element scroll values (left and top) from a given rect object\n * @method\n * @memberof Popper.Utils\n * @param {Object} rect - Rect object you want to change\n * @param {HTMLElement} element - The element from the function reads the scroll values\n * @param {Boolean} subtract - set to true if you want to subtract the scroll values\n * @return {Object} rect - The modifier rect object\n */\nfunction includeScroll(rect, element) {\n var subtract = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n\n var scrollTop = getScroll(element, 'top');\n var scrollLeft = getScroll(element, 'left');\n var modifier = subtract ? -1 : 1;\n rect.top += scrollTop * modifier;\n rect.bottom += scrollTop * modifier;\n rect.left += scrollLeft * modifier;\n rect.right += scrollLeft * modifier;\n return rect;\n}\n\n/*\n * Helper to detect borders of a given element\n * @method\n * @memberof Popper.Utils\n * @param {CSSStyleDeclaration} styles\n * Result of `getStyleComputedProperty` on the given element\n * @param {String} axis - `x` or `y`\n * @return {number} borders - The borders size of the given axis\n */\n\nfunction getBordersSize(styles, axis) {\n var sideA = axis === 'x' ? 'Left' : 'Top';\n var sideB = sideA === 'Left' ? 'Right' : 'Bottom';\n\n return parseFloat(styles['border' + sideA + 'Width'], 10) + parseFloat(styles['border' + sideB + 'Width'], 10);\n}\n\nfunction getSize(axis, body, html, computedStyle) {\n return Math.max(body['offset' + axis], body['scroll' + axis], html['client' + axis], html['offset' + axis], html['scroll' + axis], isIE(10) ? parseInt(html['offset' + axis]) + parseInt(computedStyle['margin' + (axis === 'Height' ? 'Top' : 'Left')]) + parseInt(computedStyle['margin' + (axis === 'Height' ? 'Bottom' : 'Right')]) : 0);\n}\n\nfunction getWindowSizes(document) {\n var body = document.body;\n var html = document.documentElement;\n var computedStyle = isIE(10) && getComputedStyle(html);\n\n return {\n height: getSize('Height', body, html, computedStyle),\n width: getSize('Width', body, html, computedStyle)\n };\n}\n\nvar classCallCheck = function (instance, Constructor) {\n if (!(instance instanceof Constructor)) {\n throw new TypeError(\"Cannot call a class as a function\");\n }\n};\n\nvar createClass = function () {\n function defineProperties(target, props) {\n for (var i = 0; i < props.length; i++) {\n var descriptor = props[i];\n descriptor.enumerable = descriptor.enumerable || false;\n descriptor.configurable = true;\n if (\"value\" in descriptor) descriptor.writable = true;\n Object.defineProperty(target, descriptor.key, descriptor);\n }\n }\n\n return function (Constructor, protoProps, staticProps) {\n if (protoProps) defineProperties(Constructor.prototype, protoProps);\n if (staticProps) defineProperties(Constructor, staticProps);\n return Constructor;\n };\n}();\n\n\n\n\n\nvar defineProperty = function (obj, key, value) {\n if (key in obj) {\n Object.defineProperty(obj, key, {\n value: value,\n enumerable: true,\n configurable: true,\n writable: true\n });\n } else {\n obj[key] = value;\n }\n\n return obj;\n};\n\nvar _extends = Object.assign || function (target) {\n for (var i = 1; i < arguments.length; i++) {\n var source = arguments[i];\n\n for (var key in source) {\n if (Object.prototype.hasOwnProperty.call(source, key)) {\n target[key] = source[key];\n }\n }\n }\n\n return target;\n};\n\n/**\n * Given element offsets, generate an output similar to getBoundingClientRect\n * @method\n * @memberof Popper.Utils\n * @argument {Object} offsets\n * @returns {Object} ClientRect like output\n */\nfunction getClientRect(offsets) {\n return _extends({}, offsets, {\n right: offsets.left + offsets.width,\n bottom: offsets.top + offsets.height\n });\n}\n\n/**\n * Get bounding client rect of given element\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} element\n * @return {Object} client rect\n */\nfunction getBoundingClientRect(element) {\n var rect = {};\n\n // IE10 10 FIX: Please, don't ask, the element isn't\n // considered in DOM in some circumstances...\n // This isn't reproducible in IE10 compatibility mode of IE11\n try {\n if (isIE(10)) {\n rect = element.getBoundingClientRect();\n var scrollTop = getScroll(element, 'top');\n var scrollLeft = getScroll(element, 'left');\n rect.top += scrollTop;\n rect.left += scrollLeft;\n rect.bottom += scrollTop;\n rect.right += scrollLeft;\n } else {\n rect = element.getBoundingClientRect();\n }\n } catch (e) {}\n\n var result = {\n left: rect.left,\n top: rect.top,\n width: rect.right - rect.left,\n height: rect.bottom - rect.top\n };\n\n // subtract scrollbar size from sizes\n var sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {};\n var width = sizes.width || element.clientWidth || result.width;\n var height = sizes.height || element.clientHeight || result.height;\n\n var horizScrollbar = element.offsetWidth - width;\n var vertScrollbar = element.offsetHeight - height;\n\n // if an hypothetical scrollbar is detected, we must be sure it's not a `border`\n // we make this check conditional for performance reasons\n if (horizScrollbar || vertScrollbar) {\n var styles = getStyleComputedProperty(element);\n horizScrollbar -= getBordersSize(styles, 'x');\n vertScrollbar -= getBordersSize(styles, 'y');\n\n result.width -= horizScrollbar;\n result.height -= vertScrollbar;\n }\n\n return getClientRect(result);\n}\n\nfunction getOffsetRectRelativeToArbitraryNode(children, parent) {\n var fixedPosition = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;\n\n var isIE10 = isIE(10);\n var isHTML = parent.nodeName === 'HTML';\n var childrenRect = getBoundingClientRect(children);\n var parentRect = getBoundingClientRect(parent);\n var scrollParent = getScrollParent(children);\n\n var styles = getStyleComputedProperty(parent);\n var borderTopWidth = parseFloat(styles.borderTopWidth, 10);\n var borderLeftWidth = parseFloat(styles.borderLeftWidth, 10);\n\n // In cases where the parent is fixed, we must ignore negative scroll in offset calc\n if (fixedPosition && isHTML) {\n parentRect.top = Math.max(parentRect.top, 0);\n parentRect.left = Math.max(parentRect.left, 0);\n }\n var offsets = getClientRect({\n top: childrenRect.top - parentRect.top - borderTopWidth,\n left: childrenRect.left - parentRect.left - borderLeftWidth,\n width: childrenRect.width,\n height: childrenRect.height\n });\n offsets.marginTop = 0;\n offsets.marginLeft = 0;\n\n // Subtract margins of documentElement in case it's being used as parent\n // we do this only on HTML because it's the only element that behaves\n // differently when margins are applied to it. The margins are included in\n // the box of the documentElement, in the other cases not.\n if (!isIE10 && isHTML) {\n var marginTop = parseFloat(styles.marginTop, 10);\n var marginLeft = parseFloat(styles.marginLeft, 10);\n\n offsets.top -= borderTopWidth - marginTop;\n offsets.bottom -= borderTopWidth - marginTop;\n offsets.left -= borderLeftWidth - marginLeft;\n offsets.right -= borderLeftWidth - marginLeft;\n\n // Attach marginTop and marginLeft because in some circumstances we may need them\n offsets.marginTop = marginTop;\n offsets.marginLeft = marginLeft;\n }\n\n if (isIE10 && !fixedPosition ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {\n offsets = includeScroll(offsets, parent);\n }\n\n return offsets;\n}\n\nfunction getViewportOffsetRectRelativeToArtbitraryNode(element) {\n var excludeScroll = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n var html = element.ownerDocument.documentElement;\n var relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);\n var width = Math.max(html.clientWidth, window.innerWidth || 0);\n var height = Math.max(html.clientHeight, window.innerHeight || 0);\n\n var scrollTop = !excludeScroll ? getScroll(html) : 0;\n var scrollLeft = !excludeScroll ? getScroll(html, 'left') : 0;\n\n var offset = {\n top: scrollTop - relativeOffset.top + relativeOffset.marginTop,\n left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,\n width: width,\n height: height\n };\n\n return getClientRect(offset);\n}\n\n/**\n * Check if the given element is fixed or is inside a fixed parent\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @argument {Element} customContainer\n * @returns {Boolean} answer to \"isFixed?\"\n */\nfunction isFixed(element) {\n var nodeName = element.nodeName;\n if (nodeName === 'BODY' || nodeName === 'HTML') {\n return false;\n }\n if (getStyleComputedProperty(element, 'position') === 'fixed') {\n return true;\n }\n var parentNode = getParentNode(element);\n if (!parentNode) {\n return false;\n }\n return isFixed(parentNode);\n}\n\n/**\n * Finds the first parent of an element that has a transformed property defined\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Element} first transformed parent or documentElement\n */\n\nfunction getFixedPositionOffsetParent(element) {\n // This check is needed to avoid errors in case one of the elements isn't defined for any reason\n if (!element || !element.parentElement || isIE()) {\n return document.documentElement;\n }\n var el = element.parentElement;\n while (el && getStyleComputedProperty(el, 'transform') === 'none') {\n el = el.parentElement;\n }\n return el || document.documentElement;\n}\n\n/**\n * Computed the boundaries limits and return them\n * @method\n * @memberof Popper.Utils\n * @param {HTMLElement} popper\n * @param {HTMLElement} reference\n * @param {number} padding\n * @param {HTMLElement} boundariesElement - Element used to define the boundaries\n * @param {Boolean} fixedPosition - Is in fixed position mode\n * @returns {Object} Coordinates of the boundaries\n */\nfunction getBoundaries(popper, reference, padding, boundariesElement) {\n var fixedPosition = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false;\n\n // NOTE: 1 DOM access here\n\n var boundaries = { top: 0, left: 0 };\n var offsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));\n\n // Handle viewport case\n if (boundariesElement === 'viewport') {\n boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent, fixedPosition);\n } else {\n // Handle other cases based on DOM element used as boundaries\n var boundariesNode = void 0;\n if (boundariesElement === 'scrollParent') {\n boundariesNode = getScrollParent(getParentNode(reference));\n if (boundariesNode.nodeName === 'BODY') {\n boundariesNode = popper.ownerDocument.documentElement;\n }\n } else if (boundariesElement === 'window') {\n boundariesNode = popper.ownerDocument.documentElement;\n } else {\n boundariesNode = boundariesElement;\n }\n\n var offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent, fixedPosition);\n\n // In case of HTML, we need a different computation\n if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {\n var _getWindowSizes = getWindowSizes(popper.ownerDocument),\n height = _getWindowSizes.height,\n width = _getWindowSizes.width;\n\n boundaries.top += offsets.top - offsets.marginTop;\n boundaries.bottom = height + offsets.top;\n boundaries.left += offsets.left - offsets.marginLeft;\n boundaries.right = width + offsets.left;\n } else {\n // for all the other DOM elements, this one is good\n boundaries = offsets;\n }\n }\n\n // Add paddings\n padding = padding || 0;\n var isPaddingNumber = typeof padding === 'number';\n boundaries.left += isPaddingNumber ? padding : padding.left || 0;\n boundaries.top += isPaddingNumber ? padding : padding.top || 0;\n boundaries.right -= isPaddingNumber ? padding : padding.right || 0;\n boundaries.bottom -= isPaddingNumber ? padding : padding.bottom || 0;\n\n return boundaries;\n}\n\nfunction getArea(_ref) {\n var width = _ref.width,\n height = _ref.height;\n\n return width * height;\n}\n\n/**\n * Utility used to transform the `auto` placement to the placement with more\n * available space.\n * @method\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction computeAutoPlacement(placement, refRect, popper, reference, boundariesElement) {\n var padding = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 0;\n\n if (placement.indexOf('auto') === -1) {\n return placement;\n }\n\n var boundaries = getBoundaries(popper, reference, padding, boundariesElement);\n\n var rects = {\n top: {\n width: boundaries.width,\n height: refRect.top - boundaries.top\n },\n right: {\n width: boundaries.right - refRect.right,\n height: boundaries.height\n },\n bottom: {\n width: boundaries.width,\n height: boundaries.bottom - refRect.bottom\n },\n left: {\n width: refRect.left - boundaries.left,\n height: boundaries.height\n }\n };\n\n var sortedAreas = Object.keys(rects).map(function (key) {\n return _extends({\n key: key\n }, rects[key], {\n area: getArea(rects[key])\n });\n }).sort(function (a, b) {\n return b.area - a.area;\n });\n\n var filteredAreas = sortedAreas.filter(function (_ref2) {\n var width = _ref2.width,\n height = _ref2.height;\n return width >= popper.clientWidth && height >= popper.clientHeight;\n });\n\n var computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;\n\n var variation = placement.split('-')[1];\n\n return computedPlacement + (variation ? '-' + variation : '');\n}\n\n/**\n * Get offsets to the reference element\n * @method\n * @memberof Popper.Utils\n * @param {Object} state\n * @param {Element} popper - the popper element\n * @param {Element} reference - the reference element (the popper will be relative to this)\n * @param {Element} fixedPosition - is in fixed position mode\n * @returns {Object} An object containing the offsets which will be applied to the popper\n */\nfunction getReferenceOffsets(state, popper, reference) {\n var fixedPosition = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;\n\n var commonOffsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));\n return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent, fixedPosition);\n}\n\n/**\n * Get the outer sizes of the given element (offset size + margins)\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element\n * @returns {Object} object containing width and height properties\n */\nfunction getOuterSizes(element) {\n var window = element.ownerDocument.defaultView;\n var styles = window.getComputedStyle(element);\n var x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0);\n var y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0);\n var result = {\n width: element.offsetWidth + y,\n height: element.offsetHeight + x\n };\n return result;\n}\n\n/**\n * Get the opposite placement of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement\n * @returns {String} flipped placement\n */\nfunction getOppositePlacement(placement) {\n var hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };\n return placement.replace(/left|right|bottom|top/g, function (matched) {\n return hash[matched];\n });\n}\n\n/**\n * Get offsets to the popper\n * @method\n * @memberof Popper.Utils\n * @param {Object} position - CSS position the Popper will get applied\n * @param {HTMLElement} popper - the popper element\n * @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)\n * @param {String} placement - one of the valid placement options\n * @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper\n */\nfunction getPopperOffsets(popper, referenceOffsets, placement) {\n placement = placement.split('-')[0];\n\n // Get popper node sizes\n var popperRect = getOuterSizes(popper);\n\n // Add position, width and height to our offsets object\n var popperOffsets = {\n width: popperRect.width,\n height: popperRect.height\n };\n\n // depending by the popper placement we have to compute its offsets slightly differently\n var isHoriz = ['right', 'left'].indexOf(placement) !== -1;\n var mainSide = isHoriz ? 'top' : 'left';\n var secondarySide = isHoriz ? 'left' : 'top';\n var measurement = isHoriz ? 'height' : 'width';\n var secondaryMeasurement = !isHoriz ? 'height' : 'width';\n\n popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2;\n if (placement === secondarySide) {\n popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];\n } else {\n popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];\n }\n\n return popperOffsets;\n}\n\n/**\n * Mimics the `find` method of Array\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nfunction find(arr, check) {\n // use native find if supported\n if (Array.prototype.find) {\n return arr.find(check);\n }\n\n // use `filter` to obtain the same behavior of `find`\n return arr.filter(check)[0];\n}\n\n/**\n * Return the index of the matching object\n * @method\n * @memberof Popper.Utils\n * @argument {Array} arr\n * @argument prop\n * @argument value\n * @returns index or -1\n */\nfunction findIndex(arr, prop, value) {\n // use native findIndex if supported\n if (Array.prototype.findIndex) {\n return arr.findIndex(function (cur) {\n return cur[prop] === value;\n });\n }\n\n // use `find` + `indexOf` if `findIndex` isn't supported\n var match = find(arr, function (obj) {\n return obj[prop] === value;\n });\n return arr.indexOf(match);\n}\n\n/**\n * Loop trough the list of modifiers and run them in order,\n * each of them will then edit the data object.\n * @method\n * @memberof Popper.Utils\n * @param {dataObject} data\n * @param {Array} modifiers\n * @param {String} ends - Optional modifier name used as stopper\n * @returns {dataObject}\n */\nfunction runModifiers(modifiers, data, ends) {\n var modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));\n\n modifiersToRun.forEach(function (modifier) {\n if (modifier['function']) {\n // eslint-disable-line dot-notation\n console.warn('`modifier.function` is deprecated, use `modifier.fn`!');\n }\n var fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation\n if (modifier.enabled && isFunction(fn)) {\n // Add properties to offsets to make them a complete clientRect object\n // we do this before each modifier to make sure the previous one doesn't\n // mess with these values\n data.offsets.popper = getClientRect(data.offsets.popper);\n data.offsets.reference = getClientRect(data.offsets.reference);\n\n data = fn(data, modifier);\n }\n });\n\n return data;\n}\n\n/**\n * Updates the position of the popper, computing the new offsets and applying\n * the new style.
\n * Prefer `scheduleUpdate` over `update` because of performance reasons.\n * @method\n * @memberof Popper\n */\nfunction update() {\n // if popper is destroyed, don't perform any further update\n if (this.state.isDestroyed) {\n return;\n }\n\n var data = {\n instance: this,\n styles: {},\n arrowStyles: {},\n attributes: {},\n flipped: false,\n offsets: {}\n };\n\n // compute reference element offsets\n data.offsets.reference = getReferenceOffsets(this.state, this.popper, this.reference, this.options.positionFixed);\n\n // compute auto placement, store placement inside the data object,\n // modifiers will be able to edit `placement` if needed\n // and refer to originalPlacement to know the original value\n data.placement = computeAutoPlacement(this.options.placement, data.offsets.reference, this.popper, this.reference, this.options.modifiers.flip.boundariesElement, this.options.modifiers.flip.padding);\n\n // store the computed placement inside `originalPlacement`\n data.originalPlacement = data.placement;\n\n data.positionFixed = this.options.positionFixed;\n\n // compute the popper offsets\n data.offsets.popper = getPopperOffsets(this.popper, data.offsets.reference, data.placement);\n\n data.offsets.popper.position = this.options.positionFixed ? 'fixed' : 'absolute';\n\n // run the modifiers\n data = runModifiers(this.modifiers, data);\n\n // the first `update` will call `onCreate` callback\n // the other ones will call `onUpdate` callback\n if (!this.state.isCreated) {\n this.state.isCreated = true;\n this.options.onCreate(data);\n } else {\n this.options.onUpdate(data);\n }\n}\n\n/**\n * Helper used to know if the given modifier is enabled.\n * @method\n * @memberof Popper.Utils\n * @returns {Boolean}\n */\nfunction isModifierEnabled(modifiers, modifierName) {\n return modifiers.some(function (_ref) {\n var name = _ref.name,\n enabled = _ref.enabled;\n return enabled && name === modifierName;\n });\n}\n\n/**\n * Get the prefixed supported property name\n * @method\n * @memberof Popper.Utils\n * @argument {String} property (camelCase)\n * @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)\n */\nfunction getSupportedPropertyName(property) {\n var prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];\n var upperProp = property.charAt(0).toUpperCase() + property.slice(1);\n\n for (var i = 0; i < prefixes.length; i++) {\n var prefix = prefixes[i];\n var toCheck = prefix ? '' + prefix + upperProp : property;\n if (typeof document.body.style[toCheck] !== 'undefined') {\n return toCheck;\n }\n }\n return null;\n}\n\n/**\n * Destroys the popper.\n * @method\n * @memberof Popper\n */\nfunction destroy() {\n this.state.isDestroyed = true;\n\n // touch DOM only if `applyStyle` modifier is enabled\n if (isModifierEnabled(this.modifiers, 'applyStyle')) {\n this.popper.removeAttribute('x-placement');\n this.popper.style.position = '';\n this.popper.style.top = '';\n this.popper.style.left = '';\n this.popper.style.right = '';\n this.popper.style.bottom = '';\n this.popper.style.willChange = '';\n this.popper.style[getSupportedPropertyName('transform')] = '';\n }\n\n this.disableEventListeners();\n\n // remove the popper if user explicitly asked for the deletion on destroy\n // do not use `remove` because IE11 doesn't support it\n if (this.options.removeOnDestroy) {\n this.popper.parentNode.removeChild(this.popper);\n }\n return this;\n}\n\n/**\n * Get the window associated with the element\n * @argument {Element} element\n * @returns {Window}\n */\nfunction getWindow(element) {\n var ownerDocument = element.ownerDocument;\n return ownerDocument ? ownerDocument.defaultView : window;\n}\n\nfunction attachToScrollParents(scrollParent, event, callback, scrollParents) {\n var isBody = scrollParent.nodeName === 'BODY';\n var target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;\n target.addEventListener(event, callback, { passive: true });\n\n if (!isBody) {\n attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents);\n }\n scrollParents.push(target);\n}\n\n/**\n * Setup needed event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nfunction setupEventListeners(reference, options, state, updateBound) {\n // Resize event listener on window\n state.updateBound = updateBound;\n getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });\n\n // Scroll event listener on scroll parents\n var scrollElement = getScrollParent(reference);\n attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents);\n state.scrollElement = scrollElement;\n state.eventsEnabled = true;\n\n return state;\n}\n\n/**\n * It will add resize/scroll events and start recalculating\n * position of the popper element when they are triggered.\n * @method\n * @memberof Popper\n */\nfunction enableEventListeners() {\n if (!this.state.eventsEnabled) {\n this.state = setupEventListeners(this.reference, this.options, this.state, this.scheduleUpdate);\n }\n}\n\n/**\n * Remove event listeners used to update the popper position\n * @method\n * @memberof Popper.Utils\n * @private\n */\nfunction removeEventListeners(reference, state) {\n // Remove resize event listener on window\n getWindow(reference).removeEventListener('resize', state.updateBound);\n\n // Remove scroll event listener on scroll parents\n state.scrollParents.forEach(function (target) {\n target.removeEventListener('scroll', state.updateBound);\n });\n\n // Reset state\n state.updateBound = null;\n state.scrollParents = [];\n state.scrollElement = null;\n state.eventsEnabled = false;\n return state;\n}\n\n/**\n * It will remove resize/scroll events and won't recalculate popper position\n * when they are triggered. It also won't trigger `onUpdate` callback anymore,\n * unless you call `update` method manually.\n * @method\n * @memberof Popper\n */\nfunction disableEventListeners() {\n if (this.state.eventsEnabled) {\n cancelAnimationFrame(this.scheduleUpdate);\n this.state = removeEventListeners(this.reference, this.state);\n }\n}\n\n/**\n * Tells if a given input is a number\n * @method\n * @memberof Popper.Utils\n * @param {*} input to check\n * @return {Boolean}\n */\nfunction isNumeric(n) {\n return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);\n}\n\n/**\n * Set the style to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the style to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nfunction setStyles(element, styles) {\n Object.keys(styles).forEach(function (prop) {\n var unit = '';\n // add unit if the value is numeric and is one of the following\n if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {\n unit = 'px';\n }\n element.style[prop] = styles[prop] + unit;\n });\n}\n\n/**\n * Set the attributes to the given popper\n * @method\n * @memberof Popper.Utils\n * @argument {Element} element - Element to apply the attributes to\n * @argument {Object} styles\n * Object with a list of properties and values which will be applied to the element\n */\nfunction setAttributes(element, attributes) {\n Object.keys(attributes).forEach(function (prop) {\n var value = attributes[prop];\n if (value !== false) {\n element.setAttribute(prop, attributes[prop]);\n } else {\n element.removeAttribute(prop);\n }\n });\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} data.styles - List of style properties - values to apply to popper element\n * @argument {Object} data.attributes - List of attribute properties - values to apply to popper element\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The same data object\n */\nfunction applyStyle(data) {\n // any property present in `data.styles` will be applied to the popper,\n // in this way we can make the 3rd party modifiers add custom styles to it\n // Be aware, modifiers could override the properties defined in the previous\n // lines of this modifier!\n setStyles(data.instance.popper, data.styles);\n\n // any property present in `data.attributes` will be applied to the popper,\n // they will be set as HTML attributes of the element\n setAttributes(data.instance.popper, data.attributes);\n\n // if arrowElement is defined and arrowStyles has some properties\n if (data.arrowElement && Object.keys(data.arrowStyles).length) {\n setStyles(data.arrowElement, data.arrowStyles);\n }\n\n return data;\n}\n\n/**\n * Set the x-placement attribute before everything else because it could be used\n * to add margins to the popper margins needs to be calculated to get the\n * correct popper offsets.\n * @method\n * @memberof Popper.modifiers\n * @param {HTMLElement} reference - The reference element used to position the popper\n * @param {HTMLElement} popper - The HTML element used as popper\n * @param {Object} options - Popper.js options\n */\nfunction applyStyleOnLoad(reference, popper, options, modifierOptions, state) {\n // compute reference element offsets\n var referenceOffsets = getReferenceOffsets(state, popper, reference, options.positionFixed);\n\n // compute auto placement, store placement inside the data object,\n // modifiers will be able to edit `placement` if needed\n // and refer to originalPlacement to know the original value\n var placement = computeAutoPlacement(options.placement, referenceOffsets, popper, reference, options.modifiers.flip.boundariesElement, options.modifiers.flip.padding);\n\n popper.setAttribute('x-placement', placement);\n\n // Apply `position` to popper before anything else because\n // without the position applied we can't guarantee correct computations\n setStyles(popper, { position: options.positionFixed ? 'fixed' : 'absolute' });\n\n return options;\n}\n\n/**\n * @function\n * @memberof Popper.Utils\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Boolean} shouldRound - If the offsets should be rounded at all\n * @returns {Object} The popper's position offsets rounded\n *\n * The tale of pixel-perfect positioning. It's still not 100% perfect, but as\n * good as it can be within reason.\n * Discussion here: https://github.com/FezVrasta/popper.js/pull/715\n *\n * Low DPI screens cause a popper to be blurry if not using full pixels (Safari\n * as well on High DPI screens).\n *\n * Firefox prefers no rounding for positioning and does not have blurriness on\n * high DPI screens.\n *\n * Only horizontal placement and left/right values need to be considered.\n */\nfunction getRoundedOffsets(data, shouldRound) {\n var _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n var round = Math.round,\n floor = Math.floor;\n\n var noRound = function noRound(v) {\n return v;\n };\n\n var referenceWidth = round(reference.width);\n var popperWidth = round(popper.width);\n\n var isVertical = ['left', 'right'].indexOf(data.placement) !== -1;\n var isVariation = data.placement.indexOf('-') !== -1;\n var sameWidthParity = referenceWidth % 2 === popperWidth % 2;\n var bothOddWidth = referenceWidth % 2 === 1 && popperWidth % 2 === 1;\n\n var horizontalToInteger = !shouldRound ? noRound : isVertical || isVariation || sameWidthParity ? round : floor;\n var verticalToInteger = !shouldRound ? noRound : round;\n\n return {\n left: horizontalToInteger(bothOddWidth && !isVariation && shouldRound ? popper.left - 1 : popper.left),\n top: verticalToInteger(popper.top),\n bottom: verticalToInteger(popper.bottom),\n right: horizontalToInteger(popper.right)\n };\n}\n\nvar isFirefox = isBrowser && /Firefox/i.test(navigator.userAgent);\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction computeStyle(data, options) {\n var x = options.x,\n y = options.y;\n var popper = data.offsets.popper;\n\n // Remove this legacy support in Popper.js v2\n\n var legacyGpuAccelerationOption = find(data.instance.modifiers, function (modifier) {\n return modifier.name === 'applyStyle';\n }).gpuAcceleration;\n if (legacyGpuAccelerationOption !== undefined) {\n console.warn('WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!');\n }\n var gpuAcceleration = legacyGpuAccelerationOption !== undefined ? legacyGpuAccelerationOption : options.gpuAcceleration;\n\n var offsetParent = getOffsetParent(data.instance.popper);\n var offsetParentRect = getBoundingClientRect(offsetParent);\n\n // Styles\n var styles = {\n position: popper.position\n };\n\n var offsets = getRoundedOffsets(data, window.devicePixelRatio < 2 || !isFirefox);\n\n var sideA = x === 'bottom' ? 'top' : 'bottom';\n var sideB = y === 'right' ? 'left' : 'right';\n\n // if gpuAcceleration is set to `true` and transform is supported,\n // we use `translate3d` to apply the position to the popper we\n // automatically use the supported prefixed version if needed\n var prefixedProperty = getSupportedPropertyName('transform');\n\n // now, let's make a step back and look at this code closely (wtf?)\n // If the content of the popper grows once it's been positioned, it\n // may happen that the popper gets misplaced because of the new content\n // overflowing its reference element\n // To avoid this problem, we provide two options (x and y), which allow\n // the consumer to define the offset origin.\n // If we position a popper on top of a reference element, we can set\n // `x` to `top` to make the popper grow towards its top instead of\n // its bottom.\n var left = void 0,\n top = void 0;\n if (sideA === 'bottom') {\n // when offsetParent is the positioning is relative to the bottom of the screen (excluding the scrollbar)\n // and not the bottom of the html element\n if (offsetParent.nodeName === 'HTML') {\n top = -offsetParent.clientHeight + offsets.bottom;\n } else {\n top = -offsetParentRect.height + offsets.bottom;\n }\n } else {\n top = offsets.top;\n }\n if (sideB === 'right') {\n if (offsetParent.nodeName === 'HTML') {\n left = -offsetParent.clientWidth + offsets.right;\n } else {\n left = -offsetParentRect.width + offsets.right;\n }\n } else {\n left = offsets.left;\n }\n if (gpuAcceleration && prefixedProperty) {\n styles[prefixedProperty] = 'translate3d(' + left + 'px, ' + top + 'px, 0)';\n styles[sideA] = 0;\n styles[sideB] = 0;\n styles.willChange = 'transform';\n } else {\n // othwerise, we use the standard `top`, `left`, `bottom` and `right` properties\n var invertTop = sideA === 'bottom' ? -1 : 1;\n var invertLeft = sideB === 'right' ? -1 : 1;\n styles[sideA] = top * invertTop;\n styles[sideB] = left * invertLeft;\n styles.willChange = sideA + ', ' + sideB;\n }\n\n // Attributes\n var attributes = {\n 'x-placement': data.placement\n };\n\n // Update `data` attributes, styles and arrowStyles\n data.attributes = _extends({}, attributes, data.attributes);\n data.styles = _extends({}, styles, data.styles);\n data.arrowStyles = _extends({}, data.offsets.arrow, data.arrowStyles);\n\n return data;\n}\n\n/**\n * Helper used to know if the given modifier depends from another one.
\n * It checks if the needed modifier is listed and enabled.\n * @method\n * @memberof Popper.Utils\n * @param {Array} modifiers - list of modifiers\n * @param {String} requestingName - name of requesting modifier\n * @param {String} requestedName - name of requested modifier\n * @returns {Boolean}\n */\nfunction isModifierRequired(modifiers, requestingName, requestedName) {\n var requesting = find(modifiers, function (_ref) {\n var name = _ref.name;\n return name === requestingName;\n });\n\n var isRequired = !!requesting && modifiers.some(function (modifier) {\n return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order;\n });\n\n if (!isRequired) {\n var _requesting = '`' + requestingName + '`';\n var requested = '`' + requestedName + '`';\n console.warn(requested + ' modifier is required by ' + _requesting + ' modifier in order to work, be sure to include it before ' + _requesting + '!');\n }\n return isRequired;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction arrow(data, options) {\n var _data$offsets$arrow;\n\n // arrow depends on keepTogether in order to work\n if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {\n return data;\n }\n\n var arrowElement = options.element;\n\n // if arrowElement is a string, suppose it's a CSS selector\n if (typeof arrowElement === 'string') {\n arrowElement = data.instance.popper.querySelector(arrowElement);\n\n // if arrowElement is not found, don't run the modifier\n if (!arrowElement) {\n return data;\n }\n } else {\n // if the arrowElement isn't a query selector we must check that the\n // provided DOM node is child of its popper node\n if (!data.instance.popper.contains(arrowElement)) {\n console.warn('WARNING: `arrow.element` must be child of its popper element!');\n return data;\n }\n }\n\n var placement = data.placement.split('-')[0];\n var _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n\n var isVertical = ['left', 'right'].indexOf(placement) !== -1;\n\n var len = isVertical ? 'height' : 'width';\n var sideCapitalized = isVertical ? 'Top' : 'Left';\n var side = sideCapitalized.toLowerCase();\n var altSide = isVertical ? 'left' : 'top';\n var opSide = isVertical ? 'bottom' : 'right';\n var arrowElementSize = getOuterSizes(arrowElement)[len];\n\n //\n // extends keepTogether behavior making sure the popper and its\n // reference have enough pixels in conjunction\n //\n\n // top/left side\n if (reference[opSide] - arrowElementSize < popper[side]) {\n data.offsets.popper[side] -= popper[side] - (reference[opSide] - arrowElementSize);\n }\n // bottom/right side\n if (reference[side] + arrowElementSize > popper[opSide]) {\n data.offsets.popper[side] += reference[side] + arrowElementSize - popper[opSide];\n }\n data.offsets.popper = getClientRect(data.offsets.popper);\n\n // compute center of the popper\n var center = reference[side] + reference[len] / 2 - arrowElementSize / 2;\n\n // Compute the sideValue using the updated popper offsets\n // take popper margin in account because we don't have this info available\n var css = getStyleComputedProperty(data.instance.popper);\n var popperMarginSide = parseFloat(css['margin' + sideCapitalized], 10);\n var popperBorderSide = parseFloat(css['border' + sideCapitalized + 'Width'], 10);\n var sideValue = center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;\n\n // prevent arrowElement from being placed not contiguously to its popper\n sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);\n\n data.arrowElement = arrowElement;\n data.offsets.arrow = (_data$offsets$arrow = {}, defineProperty(_data$offsets$arrow, side, Math.round(sideValue)), defineProperty(_data$offsets$arrow, altSide, ''), _data$offsets$arrow);\n\n return data;\n}\n\n/**\n * Get the opposite placement variation of the given one\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement variation\n * @returns {String} flipped placement variation\n */\nfunction getOppositeVariation(variation) {\n if (variation === 'end') {\n return 'start';\n } else if (variation === 'start') {\n return 'end';\n }\n return variation;\n}\n\n/**\n * List of accepted placements to use as values of the `placement` option.
\n * Valid placements are:\n * - `auto`\n * - `top`\n * - `right`\n * - `bottom`\n * - `left`\n *\n * Each placement can have a variation from this list:\n * - `-start`\n * - `-end`\n *\n * Variations are interpreted easily if you think of them as the left to right\n * written languages. Horizontally (`top` and `bottom`), `start` is left and `end`\n * is right.
\n * Vertically (`left` and `right`), `start` is top and `end` is bottom.\n *\n * Some valid examples are:\n * - `top-end` (on top of reference, right aligned)\n * - `right-start` (on right of reference, top aligned)\n * - `bottom` (on bottom, centered)\n * - `auto-end` (on the side with more space available, alignment depends by placement)\n *\n * @static\n * @type {Array}\n * @enum {String}\n * @readonly\n * @method placements\n * @memberof Popper\n */\nvar placements = ['auto-start', 'auto', 'auto-end', 'top-start', 'top', 'top-end', 'right-start', 'right', 'right-end', 'bottom-end', 'bottom', 'bottom-start', 'left-end', 'left', 'left-start'];\n\n// Get rid of `auto` `auto-start` and `auto-end`\nvar validPlacements = placements.slice(3);\n\n/**\n * Given an initial placement, returns all the subsequent placements\n * clockwise (or counter-clockwise).\n *\n * @method\n * @memberof Popper.Utils\n * @argument {String} placement - A valid placement (it accepts variations)\n * @argument {Boolean} counter - Set to true to walk the placements counterclockwise\n * @returns {Array} placements including their variations\n */\nfunction clockwise(placement) {\n var counter = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;\n\n var index = validPlacements.indexOf(placement);\n var arr = validPlacements.slice(index + 1).concat(validPlacements.slice(0, index));\n return counter ? arr.reverse() : arr;\n}\n\nvar BEHAVIORS = {\n FLIP: 'flip',\n CLOCKWISE: 'clockwise',\n COUNTERCLOCKWISE: 'counterclockwise'\n};\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction flip(data, options) {\n // if `inner` modifier is enabled, we can't use the `flip` modifier\n if (isModifierEnabled(data.instance.modifiers, 'inner')) {\n return data;\n }\n\n if (data.flipped && data.placement === data.originalPlacement) {\n // seems like flip is trying to loop, probably there's not enough space on any of the flippable sides\n return data;\n }\n\n var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, options.boundariesElement, data.positionFixed);\n\n var placement = data.placement.split('-')[0];\n var placementOpposite = getOppositePlacement(placement);\n var variation = data.placement.split('-')[1] || '';\n\n var flipOrder = [];\n\n switch (options.behavior) {\n case BEHAVIORS.FLIP:\n flipOrder = [placement, placementOpposite];\n break;\n case BEHAVIORS.CLOCKWISE:\n flipOrder = clockwise(placement);\n break;\n case BEHAVIORS.COUNTERCLOCKWISE:\n flipOrder = clockwise(placement, true);\n break;\n default:\n flipOrder = options.behavior;\n }\n\n flipOrder.forEach(function (step, index) {\n if (placement !== step || flipOrder.length === index + 1) {\n return data;\n }\n\n placement = data.placement.split('-')[0];\n placementOpposite = getOppositePlacement(placement);\n\n var popperOffsets = data.offsets.popper;\n var refOffsets = data.offsets.reference;\n\n // using floor because the reference offsets may contain decimals we are not going to consider here\n var floor = Math.floor;\n var overlapsRef = placement === 'left' && floor(popperOffsets.right) > floor(refOffsets.left) || placement === 'right' && floor(popperOffsets.left) < floor(refOffsets.right) || placement === 'top' && floor(popperOffsets.bottom) > floor(refOffsets.top) || placement === 'bottom' && floor(popperOffsets.top) < floor(refOffsets.bottom);\n\n var overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);\n var overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);\n var overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);\n var overflowsBottom = floor(popperOffsets.bottom) > floor(boundaries.bottom);\n\n var overflowsBoundaries = placement === 'left' && overflowsLeft || placement === 'right' && overflowsRight || placement === 'top' && overflowsTop || placement === 'bottom' && overflowsBottom;\n\n // flip the variation if required\n var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n\n // flips variation if reference element overflows boundaries\n var flippedVariationByRef = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom);\n\n // flips variation if popper content overflows boundaries\n var flippedVariationByContent = !!options.flipVariationsByContent && (isVertical && variation === 'start' && overflowsRight || isVertical && variation === 'end' && overflowsLeft || !isVertical && variation === 'start' && overflowsBottom || !isVertical && variation === 'end' && overflowsTop);\n\n var flippedVariation = flippedVariationByRef || flippedVariationByContent;\n\n if (overlapsRef || overflowsBoundaries || flippedVariation) {\n // this boolean to detect any flip loop\n data.flipped = true;\n\n if (overlapsRef || overflowsBoundaries) {\n placement = flipOrder[index + 1];\n }\n\n if (flippedVariation) {\n variation = getOppositeVariation(variation);\n }\n\n data.placement = placement + (variation ? '-' + variation : '');\n\n // this object contains `position`, we want to preserve it along with\n // any additional property we may add in the future\n data.offsets.popper = _extends({}, data.offsets.popper, getPopperOffsets(data.instance.popper, data.offsets.reference, data.placement));\n\n data = runModifiers(data.instance.modifiers, data, 'flip');\n }\n });\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction keepTogether(data) {\n var _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n\n var placement = data.placement.split('-')[0];\n var floor = Math.floor;\n var isVertical = ['top', 'bottom'].indexOf(placement) !== -1;\n var side = isVertical ? 'right' : 'bottom';\n var opSide = isVertical ? 'left' : 'top';\n var measurement = isVertical ? 'width' : 'height';\n\n if (popper[side] < floor(reference[opSide])) {\n data.offsets.popper[opSide] = floor(reference[opSide]) - popper[measurement];\n }\n if (popper[opSide] > floor(reference[side])) {\n data.offsets.popper[opSide] = floor(reference[side]);\n }\n\n return data;\n}\n\n/**\n * Converts a string containing value + unit into a px value number\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} str - Value + unit string\n * @argument {String} measurement - `height` or `width`\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @returns {Number|String}\n * Value in pixels, or original string if no values were extracted\n */\nfunction toValue(str, measurement, popperOffsets, referenceOffsets) {\n // separate value from unit\n var split = str.match(/((?:\\-|\\+)?\\d*\\.?\\d*)(.*)/);\n var value = +split[1];\n var unit = split[2];\n\n // If it's not a number it's an operator, I guess\n if (!value) {\n return str;\n }\n\n if (unit.indexOf('%') === 0) {\n var element = void 0;\n switch (unit) {\n case '%p':\n element = popperOffsets;\n break;\n case '%':\n case '%r':\n default:\n element = referenceOffsets;\n }\n\n var rect = getClientRect(element);\n return rect[measurement] / 100 * value;\n } else if (unit === 'vh' || unit === 'vw') {\n // if is a vh or vw, we calculate the size based on the viewport\n var size = void 0;\n if (unit === 'vh') {\n size = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);\n } else {\n size = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);\n }\n return size / 100 * value;\n } else {\n // if is an explicit pixel unit, we get rid of the unit and keep the value\n // if is an implicit unit, it's px, and we return just the value\n return value;\n }\n}\n\n/**\n * Parse an `offset` string to extrapolate `x` and `y` numeric offsets.\n * @function\n * @memberof {modifiers~offset}\n * @private\n * @argument {String} offset\n * @argument {Object} popperOffsets\n * @argument {Object} referenceOffsets\n * @argument {String} basePlacement\n * @returns {Array} a two cells array with x and y offsets in numbers\n */\nfunction parseOffset(offset, popperOffsets, referenceOffsets, basePlacement) {\n var offsets = [0, 0];\n\n // Use height if placement is left or right and index is 0 otherwise use width\n // in this way the first offset will use an axis and the second one\n // will use the other one\n var useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;\n\n // Split the offset string to obtain a list of values and operands\n // The regex addresses values with the plus or minus sign in front (+10, -20, etc)\n var fragments = offset.split(/(\\+|\\-)/).map(function (frag) {\n return frag.trim();\n });\n\n // Detect if the offset string contains a pair of values or a single one\n // they could be separated by comma or space\n var divider = fragments.indexOf(find(fragments, function (frag) {\n return frag.search(/,|\\s/) !== -1;\n }));\n\n if (fragments[divider] && fragments[divider].indexOf(',') === -1) {\n console.warn('Offsets separated by white space(s) are deprecated, use a comma (,) instead.');\n }\n\n // If divider is found, we divide the list of values and operands to divide\n // them by ofset X and Y.\n var splitRegex = /\\s*,\\s*|\\s+/;\n var ops = divider !== -1 ? [fragments.slice(0, divider).concat([fragments[divider].split(splitRegex)[0]]), [fragments[divider].split(splitRegex)[1]].concat(fragments.slice(divider + 1))] : [fragments];\n\n // Convert the values with units to absolute pixels to allow our computations\n ops = ops.map(function (op, index) {\n // Most of the units rely on the orientation of the popper\n var measurement = (index === 1 ? !useHeight : useHeight) ? 'height' : 'width';\n var mergeWithPrevious = false;\n return op\n // This aggregates any `+` or `-` sign that aren't considered operators\n // e.g.: 10 + +5 => [10, +, +5]\n .reduce(function (a, b) {\n if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {\n a[a.length - 1] = b;\n mergeWithPrevious = true;\n return a;\n } else if (mergeWithPrevious) {\n a[a.length - 1] += b;\n mergeWithPrevious = false;\n return a;\n } else {\n return a.concat(b);\n }\n }, [])\n // Here we convert the string values into number values (in px)\n .map(function (str) {\n return toValue(str, measurement, popperOffsets, referenceOffsets);\n });\n });\n\n // Loop trough the offsets arrays and execute the operations\n ops.forEach(function (op, index) {\n op.forEach(function (frag, index2) {\n if (isNumeric(frag)) {\n offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);\n }\n });\n });\n return offsets;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @argument {Number|String} options.offset=0\n * The offset value as described in the modifier description\n * @returns {Object} The data object, properly modified\n */\nfunction offset(data, _ref) {\n var offset = _ref.offset;\n var placement = data.placement,\n _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n\n var basePlacement = placement.split('-')[0];\n\n var offsets = void 0;\n if (isNumeric(+offset)) {\n offsets = [+offset, 0];\n } else {\n offsets = parseOffset(offset, popper, reference, basePlacement);\n }\n\n if (basePlacement === 'left') {\n popper.top += offsets[0];\n popper.left -= offsets[1];\n } else if (basePlacement === 'right') {\n popper.top += offsets[0];\n popper.left += offsets[1];\n } else if (basePlacement === 'top') {\n popper.left += offsets[0];\n popper.top -= offsets[1];\n } else if (basePlacement === 'bottom') {\n popper.left += offsets[0];\n popper.top += offsets[1];\n }\n\n data.popper = popper;\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction preventOverflow(data, options) {\n var boundariesElement = options.boundariesElement || getOffsetParent(data.instance.popper);\n\n // If offsetParent is the reference element, we really want to\n // go one step up and use the next offsetParent as reference to\n // avoid to make this modifier completely useless and look like broken\n if (data.instance.reference === boundariesElement) {\n boundariesElement = getOffsetParent(boundariesElement);\n }\n\n // NOTE: DOM access here\n // resets the popper's position so that the document size can be calculated excluding\n // the size of the popper element itself\n var transformProp = getSupportedPropertyName('transform');\n var popperStyles = data.instance.popper.style; // assignment to help minification\n var top = popperStyles.top,\n left = popperStyles.left,\n transform = popperStyles[transformProp];\n\n popperStyles.top = '';\n popperStyles.left = '';\n popperStyles[transformProp] = '';\n\n var boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, boundariesElement, data.positionFixed);\n\n // NOTE: DOM access here\n // restores the original style properties after the offsets have been computed\n popperStyles.top = top;\n popperStyles.left = left;\n popperStyles[transformProp] = transform;\n\n options.boundaries = boundaries;\n\n var order = options.priority;\n var popper = data.offsets.popper;\n\n var check = {\n primary: function primary(placement) {\n var value = popper[placement];\n if (popper[placement] < boundaries[placement] && !options.escapeWithReference) {\n value = Math.max(popper[placement], boundaries[placement]);\n }\n return defineProperty({}, placement, value);\n },\n secondary: function secondary(placement) {\n var mainSide = placement === 'right' ? 'left' : 'top';\n var value = popper[mainSide];\n if (popper[placement] > boundaries[placement] && !options.escapeWithReference) {\n value = Math.min(popper[mainSide], boundaries[placement] - (placement === 'right' ? popper.width : popper.height));\n }\n return defineProperty({}, mainSide, value);\n }\n };\n\n order.forEach(function (placement) {\n var side = ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary';\n popper = _extends({}, popper, check[side](placement));\n });\n\n data.offsets.popper = popper;\n\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction shift(data) {\n var placement = data.placement;\n var basePlacement = placement.split('-')[0];\n var shiftvariation = placement.split('-')[1];\n\n // if shift shiftvariation is specified, run the modifier\n if (shiftvariation) {\n var _data$offsets = data.offsets,\n reference = _data$offsets.reference,\n popper = _data$offsets.popper;\n\n var isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;\n var side = isVertical ? 'left' : 'top';\n var measurement = isVertical ? 'width' : 'height';\n\n var shiftOffsets = {\n start: defineProperty({}, side, reference[side]),\n end: defineProperty({}, side, reference[side] + reference[measurement] - popper[measurement])\n };\n\n data.offsets.popper = _extends({}, popper, shiftOffsets[shiftvariation]);\n }\n\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by update method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction hide(data) {\n if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {\n return data;\n }\n\n var refRect = data.offsets.reference;\n var bound = find(data.instance.modifiers, function (modifier) {\n return modifier.name === 'preventOverflow';\n }).boundaries;\n\n if (refRect.bottom < bound.top || refRect.left > bound.right || refRect.top > bound.bottom || refRect.right < bound.left) {\n // Avoid unnecessary DOM access if visibility hasn't changed\n if (data.hide === true) {\n return data;\n }\n\n data.hide = true;\n data.attributes['x-out-of-boundaries'] = '';\n } else {\n // Avoid unnecessary DOM access if visibility hasn't changed\n if (data.hide === false) {\n return data;\n }\n\n data.hide = false;\n data.attributes['x-out-of-boundaries'] = false;\n }\n\n return data;\n}\n\n/**\n * @function\n * @memberof Modifiers\n * @argument {Object} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {Object} The data object, properly modified\n */\nfunction inner(data) {\n var placement = data.placement;\n var basePlacement = placement.split('-')[0];\n var _data$offsets = data.offsets,\n popper = _data$offsets.popper,\n reference = _data$offsets.reference;\n\n var isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;\n\n var subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;\n\n popper[isHoriz ? 'left' : 'top'] = reference[basePlacement] - (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);\n\n data.placement = getOppositePlacement(placement);\n data.offsets.popper = getClientRect(popper);\n\n return data;\n}\n\n/**\n * Modifier function, each modifier can have a function of this type assigned\n * to its `fn` property.
\n * These functions will be called on each update, this means that you must\n * make sure they are performant enough to avoid performance bottlenecks.\n *\n * @function ModifierFn\n * @argument {dataObject} data - The data object generated by `update` method\n * @argument {Object} options - Modifiers configuration and options\n * @returns {dataObject} The data object, properly modified\n */\n\n/**\n * Modifiers are plugins used to alter the behavior of your poppers.
\n * Popper.js uses a set of 9 modifiers to provide all the basic functionalities\n * needed by the library.\n *\n * Usually you don't want to override the `order`, `fn` and `onLoad` props.\n * All the other properties are configurations that could be tweaked.\n * @namespace modifiers\n */\nvar modifiers = {\n /**\n * Modifier used to shift the popper on the start or end of its reference\n * element.
\n * It will read the variation of the `placement` property.
\n * It can be one either `-end` or `-start`.\n * @memberof modifiers\n * @inner\n */\n shift: {\n /** @prop {number} order=100 - Index used to define the order of execution */\n order: 100,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: shift\n },\n\n /**\n * The `offset` modifier can shift your popper on both its axis.\n *\n * It accepts the following units:\n * - `px` or unit-less, interpreted as pixels\n * - `%` or `%r`, percentage relative to the length of the reference element\n * - `%p`, percentage relative to the length of the popper element\n * - `vw`, CSS viewport width unit\n * - `vh`, CSS viewport height unit\n *\n * For length is intended the main axis relative to the placement of the popper.
\n * This means that if the placement is `top` or `bottom`, the length will be the\n * `width`. In case of `left` or `right`, it will be the `height`.\n *\n * You can provide a single value (as `Number` or `String`), or a pair of values\n * as `String` divided by a comma or one (or more) white spaces.
\n * The latter is a deprecated method because it leads to confusion and will be\n * removed in v2.
\n * Additionally, it accepts additions and subtractions between different units.\n * Note that multiplications and divisions aren't supported.\n *\n * Valid examples are:\n * ```\n * 10\n * '10%'\n * '10, 10'\n * '10%, 10'\n * '10 + 10%'\n * '10 - 5vh + 3%'\n * '-10px + 5vh, 5px - 6%'\n * ```\n * > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap\n * > with their reference element, unfortunately, you will have to disable the `flip` modifier.\n * > You can read more on this at this [issue](https://github.com/FezVrasta/popper.js/issues/373).\n *\n * @memberof modifiers\n * @inner\n */\n offset: {\n /** @prop {number} order=200 - Index used to define the order of execution */\n order: 200,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: offset,\n /** @prop {Number|String} offset=0\n * The offset value as described in the modifier description\n */\n offset: 0\n },\n\n /**\n * Modifier used to prevent the popper from being positioned outside the boundary.\n *\n * A scenario exists where the reference itself is not within the boundaries.
\n * We can say it has \"escaped the boundaries\" — or just \"escaped\".
\n * In this case we need to decide whether the popper should either:\n *\n * - detach from the reference and remain \"trapped\" in the boundaries, or\n * - if it should ignore the boundary and \"escape with its reference\"\n *\n * When `escapeWithReference` is set to`true` and reference is completely\n * outside its boundaries, the popper will overflow (or completely leave)\n * the boundaries in order to remain attached to the edge of the reference.\n *\n * @memberof modifiers\n * @inner\n */\n preventOverflow: {\n /** @prop {number} order=300 - Index used to define the order of execution */\n order: 300,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: preventOverflow,\n /**\n * @prop {Array} [priority=['left','right','top','bottom']]\n * Popper will try to prevent overflow following these priorities by default,\n * then, it could overflow on the left and on top of the `boundariesElement`\n */\n priority: ['left', 'right', 'top', 'bottom'],\n /**\n * @prop {number} padding=5\n * Amount of pixel used to define a minimum distance between the boundaries\n * and the popper. This makes sure the popper always has a little padding\n * between the edges of its container\n */\n padding: 5,\n /**\n * @prop {String|HTMLElement} boundariesElement='scrollParent'\n * Boundaries used by the modifier. Can be `scrollParent`, `window`,\n * `viewport` or any DOM element.\n */\n boundariesElement: 'scrollParent'\n },\n\n /**\n * Modifier used to make sure the reference and its popper stay near each other\n * without leaving any gap between the two. Especially useful when the arrow is\n * enabled and you want to ensure that it points to its reference element.\n * It cares only about the first axis. You can still have poppers with margin\n * between the popper and its reference element.\n * @memberof modifiers\n * @inner\n */\n keepTogether: {\n /** @prop {number} order=400 - Index used to define the order of execution */\n order: 400,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: keepTogether\n },\n\n /**\n * This modifier is used to move the `arrowElement` of the popper to make\n * sure it is positioned between the reference element and its popper element.\n * It will read the outer size of the `arrowElement` node to detect how many\n * pixels of conjunction are needed.\n *\n * It has no effect if no `arrowElement` is provided.\n * @memberof modifiers\n * @inner\n */\n arrow: {\n /** @prop {number} order=500 - Index used to define the order of execution */\n order: 500,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: arrow,\n /** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */\n element: '[x-arrow]'\n },\n\n /**\n * Modifier used to flip the popper's placement when it starts to overlap its\n * reference element.\n *\n * Requires the `preventOverflow` modifier before it in order to work.\n *\n * **NOTE:** this modifier will interrupt the current update cycle and will\n * restart it if it detects the need to flip the placement.\n * @memberof modifiers\n * @inner\n */\n flip: {\n /** @prop {number} order=600 - Index used to define the order of execution */\n order: 600,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: flip,\n /**\n * @prop {String|Array} behavior='flip'\n * The behavior used to change the popper's placement. It can be one of\n * `flip`, `clockwise`, `counterclockwise` or an array with a list of valid\n * placements (with optional variations)\n */\n behavior: 'flip',\n /**\n * @prop {number} padding=5\n * The popper will flip if it hits the edges of the `boundariesElement`\n */\n padding: 5,\n /**\n * @prop {String|HTMLElement} boundariesElement='viewport'\n * The element which will define the boundaries of the popper position.\n * The popper will never be placed outside of the defined boundaries\n * (except if `keepTogether` is enabled)\n */\n boundariesElement: 'viewport',\n /**\n * @prop {Boolean} flipVariations=false\n * The popper will switch placement variation between `-start` and `-end` when\n * the reference element overlaps its boundaries.\n *\n * The original placement should have a set variation.\n */\n flipVariations: false,\n /**\n * @prop {Boolean} flipVariationsByContent=false\n * The popper will switch placement variation between `-start` and `-end` when\n * the popper element overlaps its reference boundaries.\n *\n * The original placement should have a set variation.\n */\n flipVariationsByContent: false\n },\n\n /**\n * Modifier used to make the popper flow toward the inner of the reference element.\n * By default, when this modifier is disabled, the popper will be placed outside\n * the reference element.\n * @memberof modifiers\n * @inner\n */\n inner: {\n /** @prop {number} order=700 - Index used to define the order of execution */\n order: 700,\n /** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */\n enabled: false,\n /** @prop {ModifierFn} */\n fn: inner\n },\n\n /**\n * Modifier used to hide the popper when its reference element is outside of the\n * popper boundaries. It will set a `x-out-of-boundaries` attribute which can\n * be used to hide with a CSS selector the popper when its reference is\n * out of boundaries.\n *\n * Requires the `preventOverflow` modifier before it in order to work.\n * @memberof modifiers\n * @inner\n */\n hide: {\n /** @prop {number} order=800 - Index used to define the order of execution */\n order: 800,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: hide\n },\n\n /**\n * Computes the style that will be applied to the popper element to gets\n * properly positioned.\n *\n * Note that this modifier will not touch the DOM, it just prepares the styles\n * so that `applyStyle` modifier can apply it. This separation is useful\n * in case you need to replace `applyStyle` with a custom implementation.\n *\n * This modifier has `850` as `order` value to maintain backward compatibility\n * with previous versions of Popper.js. Expect the modifiers ordering method\n * to change in future major versions of the library.\n *\n * @memberof modifiers\n * @inner\n */\n computeStyle: {\n /** @prop {number} order=850 - Index used to define the order of execution */\n order: 850,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: computeStyle,\n /**\n * @prop {Boolean} gpuAcceleration=true\n * If true, it uses the CSS 3D transformation to position the popper.\n * Otherwise, it will use the `top` and `left` properties\n */\n gpuAcceleration: true,\n /**\n * @prop {string} [x='bottom']\n * Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.\n * Change this if your popper should grow in a direction different from `bottom`\n */\n x: 'bottom',\n /**\n * @prop {string} [x='left']\n * Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.\n * Change this if your popper should grow in a direction different from `right`\n */\n y: 'right'\n },\n\n /**\n * Applies the computed styles to the popper element.\n *\n * All the DOM manipulations are limited to this modifier. This is useful in case\n * you want to integrate Popper.js inside a framework or view library and you\n * want to delegate all the DOM manipulations to it.\n *\n * Note that if you disable this modifier, you must make sure the popper element\n * has its position set to `absolute` before Popper.js can do its work!\n *\n * Just disable this modifier and define your own to achieve the desired effect.\n *\n * @memberof modifiers\n * @inner\n */\n applyStyle: {\n /** @prop {number} order=900 - Index used to define the order of execution */\n order: 900,\n /** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */\n enabled: true,\n /** @prop {ModifierFn} */\n fn: applyStyle,\n /** @prop {Function} */\n onLoad: applyStyleOnLoad,\n /**\n * @deprecated since version 1.10.0, the property moved to `computeStyle` modifier\n * @prop {Boolean} gpuAcceleration=true\n * If true, it uses the CSS 3D transformation to position the popper.\n * Otherwise, it will use the `top` and `left` properties\n */\n gpuAcceleration: undefined\n }\n};\n\n/**\n * The `dataObject` is an object containing all the information used by Popper.js.\n * This object is passed to modifiers and to the `onCreate` and `onUpdate` callbacks.\n * @name dataObject\n * @property {Object} data.instance The Popper.js instance\n * @property {String} data.placement Placement applied to popper\n * @property {String} data.originalPlacement Placement originally defined on init\n * @property {Boolean} data.flipped True if popper has been flipped by flip modifier\n * @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper\n * @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier\n * @property {Object} data.styles Any CSS property defined here will be applied to the popper. It expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow. It expects the JavaScript nomenclature (eg. `marginBottom`)\n * @property {Object} data.boundaries Offsets of the popper boundaries\n * @property {Object} data.offsets The measurements of popper, reference and arrow elements\n * @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values\n * @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0\n */\n\n/**\n * Default options provided to Popper.js constructor.
\n * These can be overridden using the `options` argument of Popper.js.
\n * To override an option, simply pass an object with the same\n * structure of the `options` object, as the 3rd argument. For example:\n * ```\n * new Popper(ref, pop, {\n * modifiers: {\n * preventOverflow: { enabled: false }\n * }\n * })\n * ```\n * @type {Object}\n * @static\n * @memberof Popper\n */\nvar Defaults = {\n /**\n * Popper's placement.\n * @prop {Popper.placements} placement='bottom'\n */\n placement: 'bottom',\n\n /**\n * Set this to true if you want popper to position it self in 'fixed' mode\n * @prop {Boolean} positionFixed=false\n */\n positionFixed: false,\n\n /**\n * Whether events (resize, scroll) are initially enabled.\n * @prop {Boolean} eventsEnabled=true\n */\n eventsEnabled: true,\n\n /**\n * Set to true if you want to automatically remove the popper when\n * you call the `destroy` method.\n * @prop {Boolean} removeOnDestroy=false\n */\n removeOnDestroy: false,\n\n /**\n * Callback called when the popper is created.
\n * By default, it is set to no-op.
\n * Access Popper.js instance with `data.instance`.\n * @prop {onCreate}\n */\n onCreate: function onCreate() {},\n\n /**\n * Callback called when the popper is updated. This callback is not called\n * on the initialization/creation of the popper, but only on subsequent\n * updates.
\n * By default, it is set to no-op.
\n * Access Popper.js instance with `data.instance`.\n * @prop {onUpdate}\n */\n onUpdate: function onUpdate() {},\n\n /**\n * List of modifiers used to modify the offsets before they are applied to the popper.\n * They provide most of the functionalities of Popper.js.\n * @prop {modifiers}\n */\n modifiers: modifiers\n};\n\n/**\n * @callback onCreate\n * @param {dataObject} data\n */\n\n/**\n * @callback onUpdate\n * @param {dataObject} data\n */\n\n// Utils\n// Methods\nvar Popper = function () {\n /**\n * Creates a new Popper.js instance.\n * @class Popper\n * @param {Element|referenceObject} reference - The reference element used to position the popper\n * @param {Element} popper - The HTML / XML element used as the popper\n * @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)\n * @return {Object} instance - The generated Popper.js instance\n */\n function Popper(reference, popper) {\n var _this = this;\n\n var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};\n classCallCheck(this, Popper);\n\n this.scheduleUpdate = function () {\n return requestAnimationFrame(_this.update);\n };\n\n // make update() debounced, so that it only runs at most once-per-tick\n this.update = debounce(this.update.bind(this));\n\n // with {} we create a new object with the options inside it\n this.options = _extends({}, Popper.Defaults, options);\n\n // init state\n this.state = {\n isDestroyed: false,\n isCreated: false,\n scrollParents: []\n };\n\n // get reference and popper elements (allow jQuery wrappers)\n this.reference = reference && reference.jquery ? reference[0] : reference;\n this.popper = popper && popper.jquery ? popper[0] : popper;\n\n // Deep merge modifiers options\n this.options.modifiers = {};\n Object.keys(_extends({}, Popper.Defaults.modifiers, options.modifiers)).forEach(function (name) {\n _this.options.modifiers[name] = _extends({}, Popper.Defaults.modifiers[name] || {}, options.modifiers ? options.modifiers[name] : {});\n });\n\n // Refactoring modifiers' list (Object => Array)\n this.modifiers = Object.keys(this.options.modifiers).map(function (name) {\n return _extends({\n name: name\n }, _this.options.modifiers[name]);\n })\n // sort the modifiers by order\n .sort(function (a, b) {\n return a.order - b.order;\n });\n\n // modifiers have the ability to execute arbitrary code when Popper.js get inited\n // such code is executed in the same order of its modifier\n // they could add new properties to their options configuration\n // BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!\n this.modifiers.forEach(function (modifierOptions) {\n if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {\n modifierOptions.onLoad(_this.reference, _this.popper, _this.options, modifierOptions, _this.state);\n }\n });\n\n // fire the first update to position the popper in the right place\n this.update();\n\n var eventsEnabled = this.options.eventsEnabled;\n if (eventsEnabled) {\n // setup event listeners, they will take care of update the position in specific situations\n this.enableEventListeners();\n }\n\n this.state.eventsEnabled = eventsEnabled;\n }\n\n // We can't use class properties because they don't get listed in the\n // class prototype and break stuff like Sinon stubs\n\n\n createClass(Popper, [{\n key: 'update',\n value: function update$$1() {\n return update.call(this);\n }\n }, {\n key: 'destroy',\n value: function destroy$$1() {\n return destroy.call(this);\n }\n }, {\n key: 'enableEventListeners',\n value: function enableEventListeners$$1() {\n return enableEventListeners.call(this);\n }\n }, {\n key: 'disableEventListeners',\n value: function disableEventListeners$$1() {\n return disableEventListeners.call(this);\n }\n\n /**\n * Schedules an update. It will run on the next UI update available.\n * @method scheduleUpdate\n * @memberof Popper\n */\n\n\n /**\n * Collection of utilities useful when writing custom modifiers.\n * Starting from version 1.7, this method is available only if you\n * include `popper-utils.js` before `popper.js`.\n *\n * **DEPRECATION**: This way to access PopperUtils is deprecated\n * and will be removed in v2! Use the PopperUtils module directly instead.\n * Due to the high instability of the methods contained in Utils, we can't\n * guarantee them to follow semver. Use them at your own risk!\n * @static\n * @private\n * @type {Object}\n * @deprecated since version 1.8\n * @member Utils\n * @memberof Popper\n */\n\n }]);\n return Popper;\n}();\n\n/**\n * The `referenceObject` is an object that provides an interface compatible with Popper.js\n * and lets you use it as replacement of a real DOM node.
\n * You can use this method to position a popper relatively to a set of coordinates\n * in case you don't have a DOM node to use as reference.\n *\n * ```\n * new Popper(referenceObject, popperNode);\n * ```\n *\n * NB: This feature isn't supported in Internet Explorer 10.\n * @name referenceObject\n * @property {Function} data.getBoundingClientRect\n * A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.\n * @property {number} data.clientWidth\n * An ES6 getter that will return the width of the virtual reference element.\n * @property {number} data.clientHeight\n * An ES6 getter that will return the height of the virtual reference element.\n */\n\n\nPopper.Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;\nPopper.placements = placements;\nPopper.Defaults = Defaults;\n\nexport default Popper;\n//# sourceMappingURL=popper.js.map\n","import {field, identity, isFunction, isObject} from 'vega-util';\n\nfunction isBuffer(_) {\n return (typeof Buffer === 'function' && isFunction(Buffer.isBuffer))\n ? Buffer.isBuffer(_) : false;\n}\n\nexport default function json(data, format) {\n const prop = (format && format.property) ? field(format.property) : identity;\n return isObject(data) && !isBuffer(data)\n ? parseJSON(prop(data))\n : prop(JSON.parse(data));\n}\n\njson.responseType = 'json';\n\nfunction parseJSON(data, format) {\n return (format && format.copy)\n ? JSON.parse(JSON.stringify(data))\n : data;\n}\n","import React from 'react';\nvar ThemeContext = React.createContext(null);\n\nif (process.env.NODE_ENV !== 'production') {\n ThemeContext.displayName = 'ThemeContext';\n}\n\nexport default ThemeContext;","var hasSymbol = typeof Symbol === 'function' && Symbol.for;\nexport default hasSymbol ? Symbol.for('mui.nested') : '__THEME_NESTED__';","// based on https://github.com/WICG/focus-visible/blob/v4.1.5/src/focus-visible.js\nimport * as React from 'react';\nimport * as ReactDOM from 'react-dom';\nvar hadKeyboardEvent = true;\nvar hadFocusVisibleRecently = false;\nvar hadFocusVisibleRecentlyTimeout = null;\nvar inputTypesWhitelist = {\n text: true,\n search: true,\n url: true,\n tel: true,\n email: true,\n password: true,\n number: true,\n date: true,\n month: true,\n week: true,\n time: true,\n datetime: true,\n 'datetime-local': true\n};\n/**\n * Computes whether the given element should automatically trigger the\n * `focus-visible` class being added, i.e. whether it should always match\n * `:focus-visible` when focused.\n * @param {Element} node\n * @return {boolean}\n */\n\nfunction focusTriggersKeyboardModality(node) {\n var type = node.type,\n tagName = node.tagName;\n\n if (tagName === 'INPUT' && inputTypesWhitelist[type] && !node.readOnly) {\n return true;\n }\n\n if (tagName === 'TEXTAREA' && !node.readOnly) {\n return true;\n }\n\n if (node.isContentEditable) {\n return true;\n }\n\n return false;\n}\n/**\n * Keep track of our keyboard modality state with `hadKeyboardEvent`.\n * If the most recent user interaction was via the keyboard;\n * and the key press did not include a meta, alt/option, or control key;\n * then the modality is keyboard. Otherwise, the modality is not keyboard.\n * @param {KeyboardEvent} event\n */\n\n\nfunction handleKeyDown(event) {\n if (event.metaKey || event.altKey || event.ctrlKey) {\n return;\n }\n\n hadKeyboardEvent = true;\n}\n/**\n * If at any point a user clicks with a pointing device, ensure that we change\n * the modality away from keyboard.\n * This avoids the situation where a user presses a key on an already focused\n * element, and then clicks on a different element, focusing it with a\n * pointing device, while we still think we're in keyboard modality.\n */\n\n\nfunction handlePointerDown() {\n hadKeyboardEvent = false;\n}\n\nfunction handleVisibilityChange() {\n if (this.visibilityState === 'hidden') {\n // If the tab becomes active again, the browser will handle calling focus\n // on the element (Safari actually calls it twice).\n // If this tab change caused a blur on an element with focus-visible,\n // re-apply the class when the user switches back to the tab.\n if (hadFocusVisibleRecently) {\n hadKeyboardEvent = true;\n }\n }\n}\n\nfunction prepare(doc) {\n doc.addEventListener('keydown', handleKeyDown, true);\n doc.addEventListener('mousedown', handlePointerDown, true);\n doc.addEventListener('pointerdown', handlePointerDown, true);\n doc.addEventListener('touchstart', handlePointerDown, true);\n doc.addEventListener('visibilitychange', handleVisibilityChange, true);\n}\n\nexport function teardown(doc) {\n doc.removeEventListener('keydown', handleKeyDown, true);\n doc.removeEventListener('mousedown', handlePointerDown, true);\n doc.removeEventListener('pointerdown', handlePointerDown, true);\n doc.removeEventListener('touchstart', handlePointerDown, true);\n doc.removeEventListener('visibilitychange', handleVisibilityChange, true);\n}\n\nfunction isFocusVisible(event) {\n var target = event.target;\n\n try {\n return target.matches(':focus-visible');\n } catch (error) {// browsers not implementing :focus-visible will throw a SyntaxError\n // we use our own heuristic for those browsers\n // rethrow might be better if it's not the expected error but do we really\n // want to crash if focus-visible malfunctioned?\n } // no need for validFocusTarget check. the user does that by attaching it to\n // focusable events only\n\n\n return hadKeyboardEvent || focusTriggersKeyboardModality(target);\n}\n/**\n * Should be called if a blur event is fired on a focus-visible element\n */\n\n\nfunction handleBlurVisible() {\n // To detect a tab/window switch, we look for a blur event followed\n // rapidly by a visibility change.\n // If we don't see a visibility change within 100ms, it's probably a\n // regular focus change.\n hadFocusVisibleRecently = true;\n window.clearTimeout(hadFocusVisibleRecentlyTimeout);\n hadFocusVisibleRecentlyTimeout = window.setTimeout(function () {\n hadFocusVisibleRecently = false;\n }, 100);\n}\n\nexport default function useIsFocusVisible() {\n var ref = React.useCallback(function (instance) {\n var node = ReactDOM.findDOMNode(instance);\n\n if (node != null) {\n prepare(node.ownerDocument);\n }\n }, []);\n\n if (process.env.NODE_ENV !== 'production') {\n // eslint-disable-next-line react-hooks/rules-of-hooks\n React.useDebugValue(isFocusVisible);\n }\n\n return {\n isFocusVisible: isFocusVisible,\n onBlurVisible: handleBlurVisible,\n ref: ref\n };\n}","import arrayWithoutHoles from \"./arrayWithoutHoles\";\nimport iterableToArray from \"./iterableToArray\";\nimport nonIterableSpread from \"./nonIterableSpread\";\nexport default function _toConsumableArray(arr) {\n return arrayWithoutHoles(arr) || iterableToArray(arr) || nonIterableSpread();\n}","export default function _arrayWithoutHoles(arr) {\n if (Array.isArray(arr)) {\n for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) {\n arr2[i] = arr[i];\n }\n\n return arr2;\n }\n}","export default function _iterableToArray(iter) {\n if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === \"[object Arguments]\") return Array.from(iter);\n}","export default function _nonIterableSpread() {\n throw new TypeError(\"Invalid attempt to spread non-iterable instance\");\n}","\"use strict\";\n\n// Note: This regex matches even invalid JSON strings, but since we’re\n// working on the output of `JSON.stringify` we know that only valid strings\n// are present (unless the user supplied a weird `options.indent` but in\n// that case we don’t care since the output would be invalid anyway).\nvar stringOrChar = /(\"(?:[^\\\\\"]|\\\\.)*\")|[:,]/g;\n\nmodule.exports = function stringify(passedObj, options) {\n var indent, maxLength, replacer;\n\n options = options || {};\n indent = JSON.stringify(\n [1],\n undefined,\n options.indent === undefined ? 2 : options.indent\n ).slice(2, -3);\n maxLength =\n indent === \"\"\n ? Infinity\n : options.maxLength === undefined\n ? 80\n : options.maxLength;\n replacer = options.replacer;\n\n return (function _stringify(obj, currentIndent, reserved) {\n // prettier-ignore\n var end, index, items, key, keyPart, keys, length, nextIndent, prettified, start, string, value;\n\n if (obj && typeof obj.toJSON === \"function\") {\n obj = obj.toJSON();\n }\n\n string = JSON.stringify(obj, replacer);\n\n if (string === undefined) {\n return string;\n }\n\n length = maxLength - currentIndent.length - reserved;\n\n if (string.length <= length) {\n prettified = string.replace(stringOrChar, function(match, stringLiteral) {\n return stringLiteral || match + \" \";\n });\n if (prettified.length <= length) {\n return prettified;\n }\n }\n\n if (replacer != null) {\n obj = JSON.parse(string);\n replacer = undefined;\n }\n\n if (typeof obj === \"object\" && obj !== null) {\n nextIndent = currentIndent + indent;\n items = [];\n index = 0;\n\n if (Array.isArray(obj)) {\n start = \"[\";\n end = \"]\";\n length = obj.length;\n for (; index < length; index++) {\n items.push(\n _stringify(obj[index], nextIndent, index === length - 1 ? 0 : 1) ||\n \"null\"\n );\n }\n } else {\n start = \"{\";\n end = \"}\";\n keys = Object.keys(obj);\n length = keys.length;\n for (; index < length; index++) {\n key = keys[index];\n keyPart = JSON.stringify(key) + \": \";\n value = _stringify(\n obj[key],\n nextIndent,\n keyPart.length + (index === length - 1 ? 0 : 1)\n );\n if (value !== undefined) {\n items.push(keyPart + value);\n }\n }\n }\n\n if (items.length > 0) {\n return [start, indent + items.join(\",\\n\" + nextIndent), end].join(\n \"\\n\" + currentIndent\n );\n }\n }\n\n return string;\n })(passedObj, \"\", 0);\n};\n","// Copyright 2019-2020 The Lux Authors.\r\n// \r\n// Licensed under the Apache License, Version 2.0 (the \"License\");\r\n// you may not use this file except in compliance with the License.\r\n// You may obtain a copy of the License at\r\n//\r\n// http://www.apache.org/licenses/LICENSE-2.0\r\n//\r\n// Unless required by applicable law or agreed to in writing, software\r\n// distributed under the License is distributed on an \"AS IS\" BASIS,\r\n// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n// See the License for the specific language governing permissions and\r\n// limitations under the License.\r\n\r\nexport const dispatchLogEvent = function(action:string,param:any){\r\n const LOG:boolean = true; // toggle log on/off \r\n if (LOG){\r\n var event = new CustomEvent(\"LOG\",{\"detail\":{\"action\":action,\"param\":param}})\r\n document.dispatchEvent(event);\r\n }\r\n}","exports = module.exports = SemVer\n\nvar debug\n/* istanbul ignore next */\nif (typeof process === 'object' &&\n process.env &&\n process.env.NODE_DEBUG &&\n /\\bsemver\\b/i.test(process.env.NODE_DEBUG)) {\n debug = function () {\n var args = Array.prototype.slice.call(arguments, 0)\n args.unshift('SEMVER')\n console.log.apply(console, args)\n }\n} else {\n debug = function () {}\n}\n\n// Note: this is the semver.org version of the spec that it implements\n// Not necessarily the package version of this code.\nexports.SEMVER_SPEC_VERSION = '2.0.0'\n\nvar MAX_LENGTH = 256\nvar MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER ||\n /* istanbul ignore next */ 9007199254740991\n\n// Max safe segment length for coercion.\nvar MAX_SAFE_COMPONENT_LENGTH = 16\n\n// The actual regexps go on exports.re\nvar re = exports.re = []\nvar src = exports.src = []\nvar t = exports.tokens = {}\nvar R = 0\n\nfunction tok (n) {\n t[n] = R++\n}\n\n// The following Regular Expressions can be used for tokenizing,\n// validating, and parsing SemVer version strings.\n\n// ## Numeric Identifier\n// A single `0`, or a non-zero digit followed by zero or more digits.\n\ntok('NUMERICIDENTIFIER')\nsrc[t.NUMERICIDENTIFIER] = '0|[1-9]\\\\d*'\ntok('NUMERICIDENTIFIERLOOSE')\nsrc[t.NUMERICIDENTIFIERLOOSE] = '[0-9]+'\n\n// ## Non-numeric Identifier\n// Zero or more digits, followed by a letter or hyphen, and then zero or\n// more letters, digits, or hyphens.\n\ntok('NONNUMERICIDENTIFIER')\nsrc[t.NONNUMERICIDENTIFIER] = '\\\\d*[a-zA-Z-][a-zA-Z0-9-]*'\n\n// ## Main Version\n// Three dot-separated numeric identifiers.\n\ntok('MAINVERSION')\nsrc[t.MAINVERSION] = '(' + src[t.NUMERICIDENTIFIER] + ')\\\\.' +\n '(' + src[t.NUMERICIDENTIFIER] + ')\\\\.' +\n '(' + src[t.NUMERICIDENTIFIER] + ')'\n\ntok('MAINVERSIONLOOSE')\nsrc[t.MAINVERSIONLOOSE] = '(' + src[t.NUMERICIDENTIFIERLOOSE] + ')\\\\.' +\n '(' + src[t.NUMERICIDENTIFIERLOOSE] + ')\\\\.' +\n '(' + src[t.NUMERICIDENTIFIERLOOSE] + ')'\n\n// ## Pre-release Version Identifier\n// A numeric identifier, or a non-numeric identifier.\n\ntok('PRERELEASEIDENTIFIER')\nsrc[t.PRERELEASEIDENTIFIER] = '(?:' + src[t.NUMERICIDENTIFIER] +\n '|' + src[t.NONNUMERICIDENTIFIER] + ')'\n\ntok('PRERELEASEIDENTIFIERLOOSE')\nsrc[t.PRERELEASEIDENTIFIERLOOSE] = '(?:' + src[t.NUMERICIDENTIFIERLOOSE] +\n '|' + src[t.NONNUMERICIDENTIFIER] + ')'\n\n// ## Pre-release Version\n// Hyphen, followed by one or more dot-separated pre-release version\n// identifiers.\n\ntok('PRERELEASE')\nsrc[t.PRERELEASE] = '(?:-(' + src[t.PRERELEASEIDENTIFIER] +\n '(?:\\\\.' + src[t.PRERELEASEIDENTIFIER] + ')*))'\n\ntok('PRERELEASELOOSE')\nsrc[t.PRERELEASELOOSE] = '(?:-?(' + src[t.PRERELEASEIDENTIFIERLOOSE] +\n '(?:\\\\.' + src[t.PRERELEASEIDENTIFIERLOOSE] + ')*))'\n\n// ## Build Metadata Identifier\n// Any combination of digits, letters, or hyphens.\n\ntok('BUILDIDENTIFIER')\nsrc[t.BUILDIDENTIFIER] = '[0-9A-Za-z-]+'\n\n// ## Build Metadata\n// Plus sign, followed by one or more period-separated build metadata\n// identifiers.\n\ntok('BUILD')\nsrc[t.BUILD] = '(?:\\\\+(' + src[t.BUILDIDENTIFIER] +\n '(?:\\\\.' + src[t.BUILDIDENTIFIER] + ')*))'\n\n// ## Full Version String\n// A main version, followed optionally by a pre-release version and\n// build metadata.\n\n// Note that the only major, minor, patch, and pre-release sections of\n// the version string are capturing groups. The build metadata is not a\n// capturing group, because it should not ever be used in version\n// comparison.\n\ntok('FULL')\ntok('FULLPLAIN')\nsrc[t.FULLPLAIN] = 'v?' + src[t.MAINVERSION] +\n src[t.PRERELEASE] + '?' +\n src[t.BUILD] + '?'\n\nsrc[t.FULL] = '^' + src[t.FULLPLAIN] + '$'\n\n// like full, but allows v1.2.3 and =1.2.3, which people do sometimes.\n// also, 1.0.0alpha1 (prerelease without the hyphen) which is pretty\n// common in the npm registry.\ntok('LOOSEPLAIN')\nsrc[t.LOOSEPLAIN] = '[v=\\\\s]*' + src[t.MAINVERSIONLOOSE] +\n src[t.PRERELEASELOOSE] + '?' +\n src[t.BUILD] + '?'\n\ntok('LOOSE')\nsrc[t.LOOSE] = '^' + src[t.LOOSEPLAIN] + '$'\n\ntok('GTLT')\nsrc[t.GTLT] = '((?:<|>)?=?)'\n\n// Something like \"2.*\" or \"1.2.x\".\n// Note that \"x.x\" is a valid xRange identifer, meaning \"any version\"\n// Only the first item is strictly required.\ntok('XRANGEIDENTIFIERLOOSE')\nsrc[t.XRANGEIDENTIFIERLOOSE] = src[t.NUMERICIDENTIFIERLOOSE] + '|x|X|\\\\*'\ntok('XRANGEIDENTIFIER')\nsrc[t.XRANGEIDENTIFIER] = src[t.NUMERICIDENTIFIER] + '|x|X|\\\\*'\n\ntok('XRANGEPLAIN')\nsrc[t.XRANGEPLAIN] = '[v=\\\\s]*(' + src[t.XRANGEIDENTIFIER] + ')' +\n '(?:\\\\.(' + src[t.XRANGEIDENTIFIER] + ')' +\n '(?:\\\\.(' + src[t.XRANGEIDENTIFIER] + ')' +\n '(?:' + src[t.PRERELEASE] + ')?' +\n src[t.BUILD] + '?' +\n ')?)?'\n\ntok('XRANGEPLAINLOOSE')\nsrc[t.XRANGEPLAINLOOSE] = '[v=\\\\s]*(' + src[t.XRANGEIDENTIFIERLOOSE] + ')' +\n '(?:\\\\.(' + src[t.XRANGEIDENTIFIERLOOSE] + ')' +\n '(?:\\\\.(' + src[t.XRANGEIDENTIFIERLOOSE] + ')' +\n '(?:' + src[t.PRERELEASELOOSE] + ')?' +\n src[t.BUILD] + '?' +\n ')?)?'\n\ntok('XRANGE')\nsrc[t.XRANGE] = '^' + src[t.GTLT] + '\\\\s*' + src[t.XRANGEPLAIN] + '$'\ntok('XRANGELOOSE')\nsrc[t.XRANGELOOSE] = '^' + src[t.GTLT] + '\\\\s*' + src[t.XRANGEPLAINLOOSE] + '$'\n\n// Coercion.\n// Extract anything that could conceivably be a part of a valid semver\ntok('COERCE')\nsrc[t.COERCE] = '(^|[^\\\\d])' +\n '(\\\\d{1,' + MAX_SAFE_COMPONENT_LENGTH + '})' +\n '(?:\\\\.(\\\\d{1,' + MAX_SAFE_COMPONENT_LENGTH + '}))?' +\n '(?:\\\\.(\\\\d{1,' + MAX_SAFE_COMPONENT_LENGTH + '}))?' +\n '(?:$|[^\\\\d])'\ntok('COERCERTL')\nre[t.COERCERTL] = new RegExp(src[t.COERCE], 'g')\n\n// Tilde ranges.\n// Meaning is \"reasonably at or greater than\"\ntok('LONETILDE')\nsrc[t.LONETILDE] = '(?:~>?)'\n\ntok('TILDETRIM')\nsrc[t.TILDETRIM] = '(\\\\s*)' + src[t.LONETILDE] + '\\\\s+'\nre[t.TILDETRIM] = new RegExp(src[t.TILDETRIM], 'g')\nvar tildeTrimReplace = '$1~'\n\ntok('TILDE')\nsrc[t.TILDE] = '^' + src[t.LONETILDE] + src[t.XRANGEPLAIN] + '$'\ntok('TILDELOOSE')\nsrc[t.TILDELOOSE] = '^' + src[t.LONETILDE] + src[t.XRANGEPLAINLOOSE] + '$'\n\n// Caret ranges.\n// Meaning is \"at least and backwards compatible with\"\ntok('LONECARET')\nsrc[t.LONECARET] = '(?:\\\\^)'\n\ntok('CARETTRIM')\nsrc[t.CARETTRIM] = '(\\\\s*)' + src[t.LONECARET] + '\\\\s+'\nre[t.CARETTRIM] = new RegExp(src[t.CARETTRIM], 'g')\nvar caretTrimReplace = '$1^'\n\ntok('CARET')\nsrc[t.CARET] = '^' + src[t.LONECARET] + src[t.XRANGEPLAIN] + '$'\ntok('CARETLOOSE')\nsrc[t.CARETLOOSE] = '^' + src[t.LONECARET] + src[t.XRANGEPLAINLOOSE] + '$'\n\n// A simple gt/lt/eq thing, or just \"\" to indicate \"any version\"\ntok('COMPARATORLOOSE')\nsrc[t.COMPARATORLOOSE] = '^' + src[t.GTLT] + '\\\\s*(' + src[t.LOOSEPLAIN] + ')$|^$'\ntok('COMPARATOR')\nsrc[t.COMPARATOR] = '^' + src[t.GTLT] + '\\\\s*(' + src[t.FULLPLAIN] + ')$|^$'\n\n// An expression to strip any whitespace between the gtlt and the thing\n// it modifies, so that `> 1.2.3` ==> `>1.2.3`\ntok('COMPARATORTRIM')\nsrc[t.COMPARATORTRIM] = '(\\\\s*)' + src[t.GTLT] +\n '\\\\s*(' + src[t.LOOSEPLAIN] + '|' + src[t.XRANGEPLAIN] + ')'\n\n// this one has to use the /g flag\nre[t.COMPARATORTRIM] = new RegExp(src[t.COMPARATORTRIM], 'g')\nvar comparatorTrimReplace = '$1$2$3'\n\n// Something like `1.2.3 - 1.2.4`\n// Note that these all use the loose form, because they'll be\n// checked against either the strict or loose comparator form\n// later.\ntok('HYPHENRANGE')\nsrc[t.HYPHENRANGE] = '^\\\\s*(' + src[t.XRANGEPLAIN] + ')' +\n '\\\\s+-\\\\s+' +\n '(' + src[t.XRANGEPLAIN] + ')' +\n '\\\\s*$'\n\ntok('HYPHENRANGELOOSE')\nsrc[t.HYPHENRANGELOOSE] = '^\\\\s*(' + src[t.XRANGEPLAINLOOSE] + ')' +\n '\\\\s+-\\\\s+' +\n '(' + src[t.XRANGEPLAINLOOSE] + ')' +\n '\\\\s*$'\n\n// Star ranges basically just allow anything at all.\ntok('STAR')\nsrc[t.STAR] = '(<|>)?=?\\\\s*\\\\*'\n\n// Compile to actual regexp objects.\n// All are flag-free, unless they were created above with a flag.\nfor (var i = 0; i < R; i++) {\n debug(i, src[i])\n if (!re[i]) {\n re[i] = new RegExp(src[i])\n }\n}\n\nexports.parse = parse\nfunction parse (version, options) {\n if (!options || typeof options !== 'object') {\n options = {\n loose: !!options,\n includePrerelease: false\n }\n }\n\n if (version instanceof SemVer) {\n return version\n }\n\n if (typeof version !== 'string') {\n return null\n }\n\n if (version.length > MAX_LENGTH) {\n return null\n }\n\n var r = options.loose ? re[t.LOOSE] : re[t.FULL]\n if (!r.test(version)) {\n return null\n }\n\n try {\n return new SemVer(version, options)\n } catch (er) {\n return null\n }\n}\n\nexports.valid = valid\nfunction valid (version, options) {\n var v = parse(version, options)\n return v ? v.version : null\n}\n\nexports.clean = clean\nfunction clean (version, options) {\n var s = parse(version.trim().replace(/^[=v]+/, ''), options)\n return s ? s.version : null\n}\n\nexports.SemVer = SemVer\n\nfunction SemVer (version, options) {\n if (!options || typeof options !== 'object') {\n options = {\n loose: !!options,\n includePrerelease: false\n }\n }\n if (version instanceof SemVer) {\n if (version.loose === options.loose) {\n return version\n } else {\n version = version.version\n }\n } else if (typeof version !== 'string') {\n throw new TypeError('Invalid Version: ' + version)\n }\n\n if (version.length > MAX_LENGTH) {\n throw new TypeError('version is longer than ' + MAX_LENGTH + ' characters')\n }\n\n if (!(this instanceof SemVer)) {\n return new SemVer(version, options)\n }\n\n debug('SemVer', version, options)\n this.options = options\n this.loose = !!options.loose\n\n var m = version.trim().match(options.loose ? re[t.LOOSE] : re[t.FULL])\n\n if (!m) {\n throw new TypeError('Invalid Version: ' + version)\n }\n\n this.raw = version\n\n // these are actually numbers\n this.major = +m[1]\n this.minor = +m[2]\n this.patch = +m[3]\n\n if (this.major > MAX_SAFE_INTEGER || this.major < 0) {\n throw new TypeError('Invalid major version')\n }\n\n if (this.minor > MAX_SAFE_INTEGER || this.minor < 0) {\n throw new TypeError('Invalid minor version')\n }\n\n if (this.patch > MAX_SAFE_INTEGER || this.patch < 0) {\n throw new TypeError('Invalid patch version')\n }\n\n // numberify any prerelease numeric ids\n if (!m[4]) {\n this.prerelease = []\n } else {\n this.prerelease = m[4].split('.').map(function (id) {\n if (/^[0-9]+$/.test(id)) {\n var num = +id\n if (num >= 0 && num < MAX_SAFE_INTEGER) {\n return num\n }\n }\n return id\n })\n }\n\n this.build = m[5] ? m[5].split('.') : []\n this.format()\n}\n\nSemVer.prototype.format = function () {\n this.version = this.major + '.' + this.minor + '.' + this.patch\n if (this.prerelease.length) {\n this.version += '-' + this.prerelease.join('.')\n }\n return this.version\n}\n\nSemVer.prototype.toString = function () {\n return this.version\n}\n\nSemVer.prototype.compare = function (other) {\n debug('SemVer.compare', this.version, this.options, other)\n if (!(other instanceof SemVer)) {\n other = new SemVer(other, this.options)\n }\n\n return this.compareMain(other) || this.comparePre(other)\n}\n\nSemVer.prototype.compareMain = function (other) {\n if (!(other instanceof SemVer)) {\n other = new SemVer(other, this.options)\n }\n\n return compareIdentifiers(this.major, other.major) ||\n compareIdentifiers(this.minor, other.minor) ||\n compareIdentifiers(this.patch, other.patch)\n}\n\nSemVer.prototype.comparePre = function (other) {\n if (!(other instanceof SemVer)) {\n other = new SemVer(other, this.options)\n }\n\n // NOT having a prerelease is > having one\n if (this.prerelease.length && !other.prerelease.length) {\n return -1\n } else if (!this.prerelease.length && other.prerelease.length) {\n return 1\n } else if (!this.prerelease.length && !other.prerelease.length) {\n return 0\n }\n\n var i = 0\n do {\n var a = this.prerelease[i]\n var b = other.prerelease[i]\n debug('prerelease compare', i, a, b)\n if (a === undefined && b === undefined) {\n return 0\n } else if (b === undefined) {\n return 1\n } else if (a === undefined) {\n return -1\n } else if (a === b) {\n continue\n } else {\n return compareIdentifiers(a, b)\n }\n } while (++i)\n}\n\nSemVer.prototype.compareBuild = function (other) {\n if (!(other instanceof SemVer)) {\n other = new SemVer(other, this.options)\n }\n\n var i = 0\n do {\n var a = this.build[i]\n var b = other.build[i]\n debug('prerelease compare', i, a, b)\n if (a === undefined && b === undefined) {\n return 0\n } else if (b === undefined) {\n return 1\n } else if (a === undefined) {\n return -1\n } else if (a === b) {\n continue\n } else {\n return compareIdentifiers(a, b)\n }\n } while (++i)\n}\n\n// preminor will bump the version up to the next minor release, and immediately\n// down to pre-release. premajor and prepatch work the same way.\nSemVer.prototype.inc = function (release, identifier) {\n switch (release) {\n case 'premajor':\n this.prerelease.length = 0\n this.patch = 0\n this.minor = 0\n this.major++\n this.inc('pre', identifier)\n break\n case 'preminor':\n this.prerelease.length = 0\n this.patch = 0\n this.minor++\n this.inc('pre', identifier)\n break\n case 'prepatch':\n // If this is already a prerelease, it will bump to the next version\n // drop any prereleases that might already exist, since they are not\n // relevant at this point.\n this.prerelease.length = 0\n this.inc('patch', identifier)\n this.inc('pre', identifier)\n break\n // If the input is a non-prerelease version, this acts the same as\n // prepatch.\n case 'prerelease':\n if (this.prerelease.length === 0) {\n this.inc('patch', identifier)\n }\n this.inc('pre', identifier)\n break\n\n case 'major':\n // If this is a pre-major version, bump up to the same major version.\n // Otherwise increment major.\n // 1.0.0-5 bumps to 1.0.0\n // 1.1.0 bumps to 2.0.0\n if (this.minor !== 0 ||\n this.patch !== 0 ||\n this.prerelease.length === 0) {\n this.major++\n }\n this.minor = 0\n this.patch = 0\n this.prerelease = []\n break\n case 'minor':\n // If this is a pre-minor version, bump up to the same minor version.\n // Otherwise increment minor.\n // 1.2.0-5 bumps to 1.2.0\n // 1.2.1 bumps to 1.3.0\n if (this.patch !== 0 || this.prerelease.length === 0) {\n this.minor++\n }\n this.patch = 0\n this.prerelease = []\n break\n case 'patch':\n // If this is not a pre-release version, it will increment the patch.\n // If it is a pre-release it will bump up to the same patch version.\n // 1.2.0-5 patches to 1.2.0\n // 1.2.0 patches to 1.2.1\n if (this.prerelease.length === 0) {\n this.patch++\n }\n this.prerelease = []\n break\n // This probably shouldn't be used publicly.\n // 1.0.0 \"pre\" would become 1.0.0-0 which is the wrong direction.\n case 'pre':\n if (this.prerelease.length === 0) {\n this.prerelease = [0]\n } else {\n var i = this.prerelease.length\n while (--i >= 0) {\n if (typeof this.prerelease[i] === 'number') {\n this.prerelease[i]++\n i = -2\n }\n }\n if (i === -1) {\n // didn't increment anything\n this.prerelease.push(0)\n }\n }\n if (identifier) {\n // 1.2.0-beta.1 bumps to 1.2.0-beta.2,\n // 1.2.0-beta.fooblz or 1.2.0-beta bumps to 1.2.0-beta.0\n if (this.prerelease[0] === identifier) {\n if (isNaN(this.prerelease[1])) {\n this.prerelease = [identifier, 0]\n }\n } else {\n this.prerelease = [identifier, 0]\n }\n }\n break\n\n default:\n throw new Error('invalid increment argument: ' + release)\n }\n this.format()\n this.raw = this.version\n return this\n}\n\nexports.inc = inc\nfunction inc (version, release, loose, identifier) {\n if (typeof (loose) === 'string') {\n identifier = loose\n loose = undefined\n }\n\n try {\n return new SemVer(version, loose).inc(release, identifier).version\n } catch (er) {\n return null\n }\n}\n\nexports.diff = diff\nfunction diff (version1, version2) {\n if (eq(version1, version2)) {\n return null\n } else {\n var v1 = parse(version1)\n var v2 = parse(version2)\n var prefix = ''\n if (v1.prerelease.length || v2.prerelease.length) {\n prefix = 'pre'\n var defaultResult = 'prerelease'\n }\n for (var key in v1) {\n if (key === 'major' || key === 'minor' || key === 'patch') {\n if (v1[key] !== v2[key]) {\n return prefix + key\n }\n }\n }\n return defaultResult // may be undefined\n }\n}\n\nexports.compareIdentifiers = compareIdentifiers\n\nvar numeric = /^[0-9]+$/\nfunction compareIdentifiers (a, b) {\n var anum = numeric.test(a)\n var bnum = numeric.test(b)\n\n if (anum && bnum) {\n a = +a\n b = +b\n }\n\n return a === b ? 0\n : (anum && !bnum) ? -1\n : (bnum && !anum) ? 1\n : a < b ? -1\n : 1\n}\n\nexports.rcompareIdentifiers = rcompareIdentifiers\nfunction rcompareIdentifiers (a, b) {\n return compareIdentifiers(b, a)\n}\n\nexports.major = major\nfunction major (a, loose) {\n return new SemVer(a, loose).major\n}\n\nexports.minor = minor\nfunction minor (a, loose) {\n return new SemVer(a, loose).minor\n}\n\nexports.patch = patch\nfunction patch (a, loose) {\n return new SemVer(a, loose).patch\n}\n\nexports.compare = compare\nfunction compare (a, b, loose) {\n return new SemVer(a, loose).compare(new SemVer(b, loose))\n}\n\nexports.compareLoose = compareLoose\nfunction compareLoose (a, b) {\n return compare(a, b, true)\n}\n\nexports.compareBuild = compareBuild\nfunction compareBuild (a, b, loose) {\n var versionA = new SemVer(a, loose)\n var versionB = new SemVer(b, loose)\n return versionA.compare(versionB) || versionA.compareBuild(versionB)\n}\n\nexports.rcompare = rcompare\nfunction rcompare (a, b, loose) {\n return compare(b, a, loose)\n}\n\nexports.sort = sort\nfunction sort (list, loose) {\n return list.sort(function (a, b) {\n return exports.compareBuild(a, b, loose)\n })\n}\n\nexports.rsort = rsort\nfunction rsort (list, loose) {\n return list.sort(function (a, b) {\n return exports.compareBuild(b, a, loose)\n })\n}\n\nexports.gt = gt\nfunction gt (a, b, loose) {\n return compare(a, b, loose) > 0\n}\n\nexports.lt = lt\nfunction lt (a, b, loose) {\n return compare(a, b, loose) < 0\n}\n\nexports.eq = eq\nfunction eq (a, b, loose) {\n return compare(a, b, loose) === 0\n}\n\nexports.neq = neq\nfunction neq (a, b, loose) {\n return compare(a, b, loose) !== 0\n}\n\nexports.gte = gte\nfunction gte (a, b, loose) {\n return compare(a, b, loose) >= 0\n}\n\nexports.lte = lte\nfunction lte (a, b, loose) {\n return compare(a, b, loose) <= 0\n}\n\nexports.cmp = cmp\nfunction cmp (a, op, b, loose) {\n switch (op) {\n case '===':\n if (typeof a === 'object')\n a = a.version\n if (typeof b === 'object')\n b = b.version\n return a === b\n\n case '!==':\n if (typeof a === 'object')\n a = a.version\n if (typeof b === 'object')\n b = b.version\n return a !== b\n\n case '':\n case '=':\n case '==':\n return eq(a, b, loose)\n\n case '!=':\n return neq(a, b, loose)\n\n case '>':\n return gt(a, b, loose)\n\n case '>=':\n return gte(a, b, loose)\n\n case '<':\n return lt(a, b, loose)\n\n case '<=':\n return lte(a, b, loose)\n\n default:\n throw new TypeError('Invalid operator: ' + op)\n }\n}\n\nexports.Comparator = Comparator\nfunction Comparator (comp, options) {\n if (!options || typeof options !== 'object') {\n options = {\n loose: !!options,\n includePrerelease: false\n }\n }\n\n if (comp instanceof Comparator) {\n if (comp.loose === !!options.loose) {\n return comp\n } else {\n comp = comp.value\n }\n }\n\n if (!(this instanceof Comparator)) {\n return new Comparator(comp, options)\n }\n\n debug('comparator', comp, options)\n this.options = options\n this.loose = !!options.loose\n this.parse(comp)\n\n if (this.semver === ANY) {\n this.value = ''\n } else {\n this.value = this.operator + this.semver.version\n }\n\n debug('comp', this)\n}\n\nvar ANY = {}\nComparator.prototype.parse = function (comp) {\n var r = this.options.loose ? re[t.COMPARATORLOOSE] : re[t.COMPARATOR]\n var m = comp.match(r)\n\n if (!m) {\n throw new TypeError('Invalid comparator: ' + comp)\n }\n\n this.operator = m[1] !== undefined ? m[1] : ''\n if (this.operator === '=') {\n this.operator = ''\n }\n\n // if it literally is just '>' or '' then allow anything.\n if (!m[2]) {\n this.semver = ANY\n } else {\n this.semver = new SemVer(m[2], this.options.loose)\n }\n}\n\nComparator.prototype.toString = function () {\n return this.value\n}\n\nComparator.prototype.test = function (version) {\n debug('Comparator.test', version, this.options.loose)\n\n if (this.semver === ANY || version === ANY) {\n return true\n }\n\n if (typeof version === 'string') {\n try {\n version = new SemVer(version, this.options)\n } catch (er) {\n return false\n }\n }\n\n return cmp(version, this.operator, this.semver, this.options)\n}\n\nComparator.prototype.intersects = function (comp, options) {\n if (!(comp instanceof Comparator)) {\n throw new TypeError('a Comparator is required')\n }\n\n if (!options || typeof options !== 'object') {\n options = {\n loose: !!options,\n includePrerelease: false\n }\n }\n\n var rangeTmp\n\n if (this.operator === '') {\n if (this.value === '') {\n return true\n }\n rangeTmp = new Range(comp.value, options)\n return satisfies(this.value, rangeTmp, options)\n } else if (comp.operator === '') {\n if (comp.value === '') {\n return true\n }\n rangeTmp = new Range(this.value, options)\n return satisfies(comp.semver, rangeTmp, options)\n }\n\n var sameDirectionIncreasing =\n (this.operator === '>=' || this.operator === '>') &&\n (comp.operator === '>=' || comp.operator === '>')\n var sameDirectionDecreasing =\n (this.operator === '<=' || this.operator === '<') &&\n (comp.operator === '<=' || comp.operator === '<')\n var sameSemVer = this.semver.version === comp.semver.version\n var differentDirectionsInclusive =\n (this.operator === '>=' || this.operator === '<=') &&\n (comp.operator === '>=' || comp.operator === '<=')\n var oppositeDirectionsLessThan =\n cmp(this.semver, '<', comp.semver, options) &&\n ((this.operator === '>=' || this.operator === '>') &&\n (comp.operator === '<=' || comp.operator === '<'))\n var oppositeDirectionsGreaterThan =\n cmp(this.semver, '>', comp.semver, options) &&\n ((this.operator === '<=' || this.operator === '<') &&\n (comp.operator === '>=' || comp.operator === '>'))\n\n return sameDirectionIncreasing || sameDirectionDecreasing ||\n (sameSemVer && differentDirectionsInclusive) ||\n oppositeDirectionsLessThan || oppositeDirectionsGreaterThan\n}\n\nexports.Range = Range\nfunction Range (range, options) {\n if (!options || typeof options !== 'object') {\n options = {\n loose: !!options,\n includePrerelease: false\n }\n }\n\n if (range instanceof Range) {\n if (range.loose === !!options.loose &&\n range.includePrerelease === !!options.includePrerelease) {\n return range\n } else {\n return new Range(range.raw, options)\n }\n }\n\n if (range instanceof Comparator) {\n return new Range(range.value, options)\n }\n\n if (!(this instanceof Range)) {\n return new Range(range, options)\n }\n\n this.options = options\n this.loose = !!options.loose\n this.includePrerelease = !!options.includePrerelease\n\n // First, split based on boolean or ||\n this.raw = range\n this.set = range.split(/\\s*\\|\\|\\s*/).map(function (range) {\n return this.parseRange(range.trim())\n }, this).filter(function (c) {\n // throw out any that are not relevant for whatever reason\n return c.length\n })\n\n if (!this.set.length) {\n throw new TypeError('Invalid SemVer Range: ' + range)\n }\n\n this.format()\n}\n\nRange.prototype.format = function () {\n this.range = this.set.map(function (comps) {\n return comps.join(' ').trim()\n }).join('||').trim()\n return this.range\n}\n\nRange.prototype.toString = function () {\n return this.range\n}\n\nRange.prototype.parseRange = function (range) {\n var loose = this.options.loose\n range = range.trim()\n // `1.2.3 - 1.2.4` => `>=1.2.3 <=1.2.4`\n var hr = loose ? re[t.HYPHENRANGELOOSE] : re[t.HYPHENRANGE]\n range = range.replace(hr, hyphenReplace)\n debug('hyphen replace', range)\n // `> 1.2.3 < 1.2.5` => `>1.2.3 <1.2.5`\n range = range.replace(re[t.COMPARATORTRIM], comparatorTrimReplace)\n debug('comparator trim', range, re[t.COMPARATORTRIM])\n\n // `~ 1.2.3` => `~1.2.3`\n range = range.replace(re[t.TILDETRIM], tildeTrimReplace)\n\n // `^ 1.2.3` => `^1.2.3`\n range = range.replace(re[t.CARETTRIM], caretTrimReplace)\n\n // normalize spaces\n range = range.split(/\\s+/).join(' ')\n\n // At this point, the range is completely trimmed and\n // ready to be split into comparators.\n\n var compRe = loose ? re[t.COMPARATORLOOSE] : re[t.COMPARATOR]\n var set = range.split(' ').map(function (comp) {\n return parseComparator(comp, this.options)\n }, this).join(' ').split(/\\s+/)\n if (this.options.loose) {\n // in loose mode, throw out any that are not valid comparators\n set = set.filter(function (comp) {\n return !!comp.match(compRe)\n })\n }\n set = set.map(function (comp) {\n return new Comparator(comp, this.options)\n }, this)\n\n return set\n}\n\nRange.prototype.intersects = function (range, options) {\n if (!(range instanceof Range)) {\n throw new TypeError('a Range is required')\n }\n\n return this.set.some(function (thisComparators) {\n return (\n isSatisfiable(thisComparators, options) &&\n range.set.some(function (rangeComparators) {\n return (\n isSatisfiable(rangeComparators, options) &&\n thisComparators.every(function (thisComparator) {\n return rangeComparators.every(function (rangeComparator) {\n return thisComparator.intersects(rangeComparator, options)\n })\n })\n )\n })\n )\n })\n}\n\n// take a set of comparators and determine whether there\n// exists a version which can satisfy it\nfunction isSatisfiable (comparators, options) {\n var result = true\n var remainingComparators = comparators.slice()\n var testComparator = remainingComparators.pop()\n\n while (result && remainingComparators.length) {\n result = remainingComparators.every(function (otherComparator) {\n return testComparator.intersects(otherComparator, options)\n })\n\n testComparator = remainingComparators.pop()\n }\n\n return result\n}\n\n// Mostly just for testing and legacy API reasons\nexports.toComparators = toComparators\nfunction toComparators (range, options) {\n return new Range(range, options).set.map(function (comp) {\n return comp.map(function (c) {\n return c.value\n }).join(' ').trim().split(' ')\n })\n}\n\n// comprised of xranges, tildes, stars, and gtlt's at this point.\n// already replaced the hyphen ranges\n// turn into a set of JUST comparators.\nfunction parseComparator (comp, options) {\n debug('comp', comp, options)\n comp = replaceCarets(comp, options)\n debug('caret', comp)\n comp = replaceTildes(comp, options)\n debug('tildes', comp)\n comp = replaceXRanges(comp, options)\n debug('xrange', comp)\n comp = replaceStars(comp, options)\n debug('stars', comp)\n return comp\n}\n\nfunction isX (id) {\n return !id || id.toLowerCase() === 'x' || id === '*'\n}\n\n// ~, ~> --> * (any, kinda silly)\n// ~2, ~2.x, ~2.x.x, ~>2, ~>2.x ~>2.x.x --> >=2.0.0 <3.0.0\n// ~2.0, ~2.0.x, ~>2.0, ~>2.0.x --> >=2.0.0 <2.1.0\n// ~1.2, ~1.2.x, ~>1.2, ~>1.2.x --> >=1.2.0 <1.3.0\n// ~1.2.3, ~>1.2.3 --> >=1.2.3 <1.3.0\n// ~1.2.0, ~>1.2.0 --> >=1.2.0 <1.3.0\nfunction replaceTildes (comp, options) {\n return comp.trim().split(/\\s+/).map(function (comp) {\n return replaceTilde(comp, options)\n }).join(' ')\n}\n\nfunction replaceTilde (comp, options) {\n var r = options.loose ? re[t.TILDELOOSE] : re[t.TILDE]\n return comp.replace(r, function (_, M, m, p, pr) {\n debug('tilde', comp, _, M, m, p, pr)\n var ret\n\n if (isX(M)) {\n ret = ''\n } else if (isX(m)) {\n ret = '>=' + M + '.0.0 <' + (+M + 1) + '.0.0'\n } else if (isX(p)) {\n // ~1.2 == >=1.2.0 <1.3.0\n ret = '>=' + M + '.' + m + '.0 <' + M + '.' + (+m + 1) + '.0'\n } else if (pr) {\n debug('replaceTilde pr', pr)\n ret = '>=' + M + '.' + m + '.' + p + '-' + pr +\n ' <' + M + '.' + (+m + 1) + '.0'\n } else {\n // ~1.2.3 == >=1.2.3 <1.3.0\n ret = '>=' + M + '.' + m + '.' + p +\n ' <' + M + '.' + (+m + 1) + '.0'\n }\n\n debug('tilde return', ret)\n return ret\n })\n}\n\n// ^ --> * (any, kinda silly)\n// ^2, ^2.x, ^2.x.x --> >=2.0.0 <3.0.0\n// ^2.0, ^2.0.x --> >=2.0.0 <3.0.0\n// ^1.2, ^1.2.x --> >=1.2.0 <2.0.0\n// ^1.2.3 --> >=1.2.3 <2.0.0\n// ^1.2.0 --> >=1.2.0 <2.0.0\nfunction replaceCarets (comp, options) {\n return comp.trim().split(/\\s+/).map(function (comp) {\n return replaceCaret(comp, options)\n }).join(' ')\n}\n\nfunction replaceCaret (comp, options) {\n debug('caret', comp, options)\n var r = options.loose ? re[t.CARETLOOSE] : re[t.CARET]\n return comp.replace(r, function (_, M, m, p, pr) {\n debug('caret', comp, _, M, m, p, pr)\n var ret\n\n if (isX(M)) {\n ret = ''\n } else if (isX(m)) {\n ret = '>=' + M + '.0.0 <' + (+M + 1) + '.0.0'\n } else if (isX(p)) {\n if (M === '0') {\n ret = '>=' + M + '.' + m + '.0 <' + M + '.' + (+m + 1) + '.0'\n } else {\n ret = '>=' + M + '.' + m + '.0 <' + (+M + 1) + '.0.0'\n }\n } else if (pr) {\n debug('replaceCaret pr', pr)\n if (M === '0') {\n if (m === '0') {\n ret = '>=' + M + '.' + m + '.' + p + '-' + pr +\n ' <' + M + '.' + m + '.' + (+p + 1)\n } else {\n ret = '>=' + M + '.' + m + '.' + p + '-' + pr +\n ' <' + M + '.' + (+m + 1) + '.0'\n }\n } else {\n ret = '>=' + M + '.' + m + '.' + p + '-' + pr +\n ' <' + (+M + 1) + '.0.0'\n }\n } else {\n debug('no pr')\n if (M === '0') {\n if (m === '0') {\n ret = '>=' + M + '.' + m + '.' + p +\n ' <' + M + '.' + m + '.' + (+p + 1)\n } else {\n ret = '>=' + M + '.' + m + '.' + p +\n ' <' + M + '.' + (+m + 1) + '.0'\n }\n } else {\n ret = '>=' + M + '.' + m + '.' + p +\n ' <' + (+M + 1) + '.0.0'\n }\n }\n\n debug('caret return', ret)\n return ret\n })\n}\n\nfunction replaceXRanges (comp, options) {\n debug('replaceXRanges', comp, options)\n return comp.split(/\\s+/).map(function (comp) {\n return replaceXRange(comp, options)\n }).join(' ')\n}\n\nfunction replaceXRange (comp, options) {\n comp = comp.trim()\n var r = options.loose ? re[t.XRANGELOOSE] : re[t.XRANGE]\n return comp.replace(r, function (ret, gtlt, M, m, p, pr) {\n debug('xRange', comp, ret, gtlt, M, m, p, pr)\n var xM = isX(M)\n var xm = xM || isX(m)\n var xp = xm || isX(p)\n var anyX = xp\n\n if (gtlt === '=' && anyX) {\n gtlt = ''\n }\n\n // if we're including prereleases in the match, then we need\n // to fix this to -0, the lowest possible prerelease value\n pr = options.includePrerelease ? '-0' : ''\n\n if (xM) {\n if (gtlt === '>' || gtlt === '<') {\n // nothing is allowed\n ret = '<0.0.0-0'\n } else {\n // nothing is forbidden\n ret = '*'\n }\n } else if (gtlt && anyX) {\n // we know patch is an x, because we have any x at all.\n // replace X with 0\n if (xm) {\n m = 0\n }\n p = 0\n\n if (gtlt === '>') {\n // >1 => >=2.0.0\n // >1.2 => >=1.3.0\n // >1.2.3 => >= 1.2.4\n gtlt = '>='\n if (xm) {\n M = +M + 1\n m = 0\n p = 0\n } else {\n m = +m + 1\n p = 0\n }\n } else if (gtlt === '<=') {\n // <=0.7.x is actually <0.8.0, since any 0.7.x should\n // pass. Similarly, <=7.x is actually <8.0.0, etc.\n gtlt = '<'\n if (xm) {\n M = +M + 1\n } else {\n m = +m + 1\n }\n }\n\n ret = gtlt + M + '.' + m + '.' + p + pr\n } else if (xm) {\n ret = '>=' + M + '.0.0' + pr + ' <' + (+M + 1) + '.0.0' + pr\n } else if (xp) {\n ret = '>=' + M + '.' + m + '.0' + pr +\n ' <' + M + '.' + (+m + 1) + '.0' + pr\n }\n\n debug('xRange return', ret)\n\n return ret\n })\n}\n\n// Because * is AND-ed with everything else in the comparator,\n// and '' means \"any version\", just remove the *s entirely.\nfunction replaceStars (comp, options) {\n debug('replaceStars', comp, options)\n // Looseness is ignored here. star is always as loose as it gets!\n return comp.trim().replace(re[t.STAR], '')\n}\n\n// This function is passed to string.replace(re[t.HYPHENRANGE])\n// M, m, patch, prerelease, build\n// 1.2 - 3.4.5 => >=1.2.0 <=3.4.5\n// 1.2.3 - 3.4 => >=1.2.0 <3.5.0 Any 3.4.x will do\n// 1.2 - 3.4 => >=1.2.0 <3.5.0\nfunction hyphenReplace ($0,\n from, fM, fm, fp, fpr, fb,\n to, tM, tm, tp, tpr, tb) {\n if (isX(fM)) {\n from = ''\n } else if (isX(fm)) {\n from = '>=' + fM + '.0.0'\n } else if (isX(fp)) {\n from = '>=' + fM + '.' + fm + '.0'\n } else {\n from = '>=' + from\n }\n\n if (isX(tM)) {\n to = ''\n } else if (isX(tm)) {\n to = '<' + (+tM + 1) + '.0.0'\n } else if (isX(tp)) {\n to = '<' + tM + '.' + (+tm + 1) + '.0'\n } else if (tpr) {\n to = '<=' + tM + '.' + tm + '.' + tp + '-' + tpr\n } else {\n to = '<=' + to\n }\n\n return (from + ' ' + to).trim()\n}\n\n// if ANY of the sets match ALL of its comparators, then pass\nRange.prototype.test = function (version) {\n if (!version) {\n return false\n }\n\n if (typeof version === 'string') {\n try {\n version = new SemVer(version, this.options)\n } catch (er) {\n return false\n }\n }\n\n for (var i = 0; i < this.set.length; i++) {\n if (testSet(this.set[i], version, this.options)) {\n return true\n }\n }\n return false\n}\n\nfunction testSet (set, version, options) {\n for (var i = 0; i < set.length; i++) {\n if (!set[i].test(version)) {\n return false\n }\n }\n\n if (version.prerelease.length && !options.includePrerelease) {\n // Find the set of versions that are allowed to have prereleases\n // For example, ^1.2.3-pr.1 desugars to >=1.2.3-pr.1 <2.0.0\n // That should allow `1.2.3-pr.2` to pass.\n // However, `1.2.4-alpha.notready` should NOT be allowed,\n // even though it's within the range set by the comparators.\n for (i = 0; i < set.length; i++) {\n debug(set[i].semver)\n if (set[i].semver === ANY) {\n continue\n }\n\n if (set[i].semver.prerelease.length > 0) {\n var allowed = set[i].semver\n if (allowed.major === version.major &&\n allowed.minor === version.minor &&\n allowed.patch === version.patch) {\n return true\n }\n }\n }\n\n // Version has a -pre, but it's not one of the ones we like.\n return false\n }\n\n return true\n}\n\nexports.satisfies = satisfies\nfunction satisfies (version, range, options) {\n try {\n range = new Range(range, options)\n } catch (er) {\n return false\n }\n return range.test(version)\n}\n\nexports.maxSatisfying = maxSatisfying\nfunction maxSatisfying (versions, range, options) {\n var max = null\n var maxSV = null\n try {\n var rangeObj = new Range(range, options)\n } catch (er) {\n return null\n }\n versions.forEach(function (v) {\n if (rangeObj.test(v)) {\n // satisfies(v, range, options)\n if (!max || maxSV.compare(v) === -1) {\n // compare(max, v, true)\n max = v\n maxSV = new SemVer(max, options)\n }\n }\n })\n return max\n}\n\nexports.minSatisfying = minSatisfying\nfunction minSatisfying (versions, range, options) {\n var min = null\n var minSV = null\n try {\n var rangeObj = new Range(range, options)\n } catch (er) {\n return null\n }\n versions.forEach(function (v) {\n if (rangeObj.test(v)) {\n // satisfies(v, range, options)\n if (!min || minSV.compare(v) === 1) {\n // compare(min, v, true)\n min = v\n minSV = new SemVer(min, options)\n }\n }\n })\n return min\n}\n\nexports.minVersion = minVersion\nfunction minVersion (range, loose) {\n range = new Range(range, loose)\n\n var minver = new SemVer('0.0.0')\n if (range.test(minver)) {\n return minver\n }\n\n minver = new SemVer('0.0.0-0')\n if (range.test(minver)) {\n return minver\n }\n\n minver = null\n for (var i = 0; i < range.set.length; ++i) {\n var comparators = range.set[i]\n\n comparators.forEach(function (comparator) {\n // Clone to avoid manipulating the comparator's semver object.\n var compver = new SemVer(comparator.semver.version)\n switch (comparator.operator) {\n case '>':\n if (compver.prerelease.length === 0) {\n compver.patch++\n } else {\n compver.prerelease.push(0)\n }\n compver.raw = compver.format()\n /* fallthrough */\n case '':\n case '>=':\n if (!minver || gt(minver, compver)) {\n minver = compver\n }\n break\n case '<':\n case '<=':\n /* Ignore maximum versions */\n break\n /* istanbul ignore next */\n default:\n throw new Error('Unexpected operation: ' + comparator.operator)\n }\n })\n }\n\n if (minver && range.test(minver)) {\n return minver\n }\n\n return null\n}\n\nexports.validRange = validRange\nfunction validRange (range, options) {\n try {\n // Return '*' instead of '' so that truthiness works.\n // This will throw if it's invalid anyway\n return new Range(range, options).range || '*'\n } catch (er) {\n return null\n }\n}\n\n// Determine if version is less than all the versions possible in the range\nexports.ltr = ltr\nfunction ltr (version, range, options) {\n return outside(version, range, '<', options)\n}\n\n// Determine if version is greater than all the versions possible in the range.\nexports.gtr = gtr\nfunction gtr (version, range, options) {\n return outside(version, range, '>', options)\n}\n\nexports.outside = outside\nfunction outside (version, range, hilo, options) {\n version = new SemVer(version, options)\n range = new Range(range, options)\n\n var gtfn, ltefn, ltfn, comp, ecomp\n switch (hilo) {\n case '>':\n gtfn = gt\n ltefn = lte\n ltfn = lt\n comp = '>'\n ecomp = '>='\n break\n case '<':\n gtfn = lt\n ltefn = gte\n ltfn = gt\n comp = '<'\n ecomp = '<='\n break\n default:\n throw new TypeError('Must provide a hilo val of \"<\" or \">\"')\n }\n\n // If it satisifes the range it is not outside\n if (satisfies(version, range, options)) {\n return false\n }\n\n // From now on, variable terms are as if we're in \"gtr\" mode.\n // but note that everything is flipped for the \"ltr\" function.\n\n for (var i = 0; i < range.set.length; ++i) {\n var comparators = range.set[i]\n\n var high = null\n var low = null\n\n comparators.forEach(function (comparator) {\n if (comparator.semver === ANY) {\n comparator = new Comparator('>=0.0.0')\n }\n high = high || comparator\n low = low || comparator\n if (gtfn(comparator.semver, high.semver, options)) {\n high = comparator\n } else if (ltfn(comparator.semver, low.semver, options)) {\n low = comparator\n }\n })\n\n // If the edge version comparator has a operator then our version\n // isn't outside it\n if (high.operator === comp || high.operator === ecomp) {\n return false\n }\n\n // If the lowest version comparator has an operator and our version\n // is less than it then it isn't higher than the range\n if ((!low.operator || low.operator === comp) &&\n ltefn(version, low.semver)) {\n return false\n } else if (low.operator === ecomp && ltfn(version, low.semver)) {\n return false\n }\n }\n return true\n}\n\nexports.prerelease = prerelease\nfunction prerelease (version, options) {\n var parsed = parse(version, options)\n return (parsed && parsed.prerelease.length) ? parsed.prerelease : null\n}\n\nexports.intersects = intersects\nfunction intersects (r1, r2, options) {\n r1 = new Range(r1, options)\n r2 = new Range(r2, options)\n return r1.intersects(r2)\n}\n\nexports.coerce = coerce\nfunction coerce (version, options) {\n if (version instanceof SemVer) {\n return version\n }\n\n if (typeof version === 'number') {\n version = String(version)\n }\n\n if (typeof version !== 'string') {\n return null\n }\n\n options = options || {}\n\n var match = null\n if (!options.rtl) {\n match = version.match(re[t.COERCE])\n } else {\n // Find the right-most coercible string that does not share\n // a terminus with a more left-ward coercible string.\n // Eg, '1.2.3.4' wants to coerce '2.3.4', not '3.4' or '4'\n //\n // Walk through the string checking with a /g regexp\n // Manually set the index so as to pick up overlapping matches.\n // Stop when we get a match that ends at the string end, since no\n // coercible string can be more right-ward without the same terminus.\n var next\n while ((next = re[t.COERCERTL].exec(version)) &&\n (!match || match.index + match[0].length !== version.length)\n ) {\n if (!match ||\n next.index + next[0].length !== match.index + match[0].length) {\n match = next\n }\n re[t.COERCERTL].lastIndex = next.index + next[1].length + next[2].length\n }\n // leave it in a clean state\n re[t.COERCERTL].lastIndex = -1\n }\n\n if (match === null) {\n return null\n }\n\n return parse(match[2] +\n '.' + (match[3] || '0') +\n '.' + (match[4] || '0'), options)\n}\n","\"use strict\";\nObject.defineProperty(exports, \"__esModule\", { value: true });\n/**\n * Parse a vega schema url into library and version.\n */\nfunction default_1(url) {\n var regex = /\\/schema\\/([\\w-]+)\\/([\\w\\.\\-]+)\\.json$/g;\n var _a = regex.exec(url).slice(1, 3), library = _a[0], version = _a[1];\n return { library: library, version: version };\n}\nexports.default = default_1;\n//# sourceMappingURL=index.js.map","// Copyright 2019-2020 The Lux Authors.\r\n// \r\n// Licensed under the Apache License, Version 2.0 (the \"License\");\r\n// you may not use this file except in compliance with the License.\r\n// You may obtain a copy of the License at\r\n//\r\n// http://www.apache.org/licenses/LICENSE-2.0\r\n//\r\n// Unless required by applicable law or agreed to in writing, software\r\n// distributed under the License is distributed on an \"AS IS\" BASIS,\r\n// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r\n// See the License for the specific language governing permissions and\r\n// limitations under the License.\r\n\r\nconst data = require('../package.json');\r\n\r\n/**\r\n * The _model_module_version/_view_module_version this package implements.\r\n *\r\n * The html widget manager assumes that this is the same as the npm package\r\n * version number.\r\n */\r\nexport const MODULE_VERSION = data.version;\r\n\r\n/*\r\n * The current package name.\r\n */\r\nexport const MODULE_NAME = data.name;\r\n","/*\nobject-assign\n(c) Sindre Sorhus\n@license MIT\n*/\n\n'use strict';\n/* eslint-disable no-unused-vars */\nvar getOwnPropertySymbols = Object.getOwnPropertySymbols;\nvar hasOwnProperty = Object.prototype.hasOwnProperty;\nvar propIsEnumerable = Object.prototype.propertyIsEnumerable;\n\nfunction toObject(val) {\n\tif (val === null || val === undefined) {\n\t\tthrow new TypeError('Object.assign cannot be called with null or undefined');\n\t}\n\n\treturn Object(val);\n}\n\nfunction shouldUseNative() {\n\ttry {\n\t\tif (!Object.assign) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Detect buggy property enumeration order in older V8 versions.\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=4118\n\t\tvar test1 = new String('abc'); // eslint-disable-line no-new-wrappers\n\t\ttest1[5] = 'de';\n\t\tif (Object.getOwnPropertyNames(test1)[0] === '5') {\n\t\t\treturn false;\n\t\t}\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=3056\n\t\tvar test2 = {};\n\t\tfor (var i = 0; i < 10; i++) {\n\t\t\ttest2['_' + String.fromCharCode(i)] = i;\n\t\t}\n\t\tvar order2 = Object.getOwnPropertyNames(test2).map(function (n) {\n\t\t\treturn test2[n];\n\t\t});\n\t\tif (order2.join('') !== '0123456789') {\n\t\t\treturn false;\n\t\t}\n\n\t\t// https://bugs.chromium.org/p/v8/issues/detail?id=3056\n\t\tvar test3 = {};\n\t\t'abcdefghijklmnopqrst'.split('').forEach(function (letter) {\n\t\t\ttest3[letter] = letter;\n\t\t});\n\t\tif (Object.keys(Object.assign({}, test3)).join('') !==\n\t\t\t\t'abcdefghijklmnopqrst') {\n\t\t\treturn false;\n\t\t}\n\n\t\treturn true;\n\t} catch (err) {\n\t\t// We don't expect any of the above to throw, but better to be safe.\n\t\treturn false;\n\t}\n}\n\nmodule.exports = shouldUseNative() ? Object.assign : function (target, source) {\n\tvar from;\n\tvar to = toObject(target);\n\tvar symbols;\n\n\tfor (var s = 1; s < arguments.length; s++) {\n\t\tfrom = Object(arguments[s]);\n\n\t\tfor (var key in from) {\n\t\t\tif (hasOwnProperty.call(from, key)) {\n\t\t\t\tto[key] = from[key];\n\t\t\t}\n\t\t}\n\n\t\tif (getOwnPropertySymbols) {\n\t\t\tsymbols = getOwnPropertySymbols(from);\n\t\t\tfor (var i = 0; i < symbols.length; i++) {\n\t\t\t\tif (propIsEnumerable.call(from, symbols[i])) {\n\t\t\t\t\tto[symbols[i]] = from[symbols[i]];\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\treturn to;\n};\n","/**\n * @license\n * Lodash \n * Copyright OpenJS Foundation and other contributors \n * Released under MIT license \n * Based on Underscore.js 1.8.3 \n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n;(function() {\n\n /** Used as a safe reference for `undefined` in pre-ES5 environments. */\n var undefined;\n\n /** Used as the semantic version number. */\n var VERSION = '4.17.19';\n\n /** Used as the size to enable large array optimizations. */\n var LARGE_ARRAY_SIZE = 200;\n\n /** Error message constants. */\n var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',\n FUNC_ERROR_TEXT = 'Expected a function';\n\n /** Used to stand-in for `undefined` hash values. */\n var HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n /** Used as the maximum memoize cache size. */\n var MAX_MEMOIZE_SIZE = 500;\n\n /** Used as the internal argument placeholder. */\n var PLACEHOLDER = '__lodash_placeholder__';\n\n /** Used to compose bitmasks for cloning. */\n var CLONE_DEEP_FLAG = 1,\n CLONE_FLAT_FLAG = 2,\n CLONE_SYMBOLS_FLAG = 4;\n\n /** Used to compose bitmasks for value comparisons. */\n var COMPARE_PARTIAL_FLAG = 1,\n COMPARE_UNORDERED_FLAG = 2;\n\n /** Used to compose bitmasks for function metadata. */\n var WRAP_BIND_FLAG = 1,\n WRAP_BIND_KEY_FLAG = 2,\n WRAP_CURRY_BOUND_FLAG = 4,\n WRAP_CURRY_FLAG = 8,\n WRAP_CURRY_RIGHT_FLAG = 16,\n WRAP_PARTIAL_FLAG = 32,\n WRAP_PARTIAL_RIGHT_FLAG = 64,\n WRAP_ARY_FLAG = 128,\n WRAP_REARG_FLAG = 256,\n WRAP_FLIP_FLAG = 512;\n\n /** Used as default options for `_.truncate`. */\n var DEFAULT_TRUNC_LENGTH = 30,\n DEFAULT_TRUNC_OMISSION = '...';\n\n /** Used to detect hot functions by number of calls within a span of milliseconds. */\n var HOT_COUNT = 800,\n HOT_SPAN = 16;\n\n /** Used to indicate the type of lazy iteratees. */\n var LAZY_FILTER_FLAG = 1,\n LAZY_MAP_FLAG = 2,\n LAZY_WHILE_FLAG = 3;\n\n /** Used as references for various `Number` constants. */\n var INFINITY = 1 / 0,\n MAX_SAFE_INTEGER = 9007199254740991,\n MAX_INTEGER = 1.7976931348623157e+308,\n NAN = 0 / 0;\n\n /** Used as references for the maximum length and index of an array. */\n var MAX_ARRAY_LENGTH = 4294967295,\n MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,\n HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;\n\n /** Used to associate wrap methods with their bit flags. */\n var wrapFlags = [\n ['ary', WRAP_ARY_FLAG],\n ['bind', WRAP_BIND_FLAG],\n ['bindKey', WRAP_BIND_KEY_FLAG],\n ['curry', WRAP_CURRY_FLAG],\n ['curryRight', WRAP_CURRY_RIGHT_FLAG],\n ['flip', WRAP_FLIP_FLAG],\n ['partial', WRAP_PARTIAL_FLAG],\n ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],\n ['rearg', WRAP_REARG_FLAG]\n ];\n\n /** `Object#toString` result references. */\n var argsTag = '[object Arguments]',\n arrayTag = '[object Array]',\n asyncTag = '[object AsyncFunction]',\n boolTag = '[object Boolean]',\n dateTag = '[object Date]',\n domExcTag = '[object DOMException]',\n errorTag = '[object Error]',\n funcTag = '[object Function]',\n genTag = '[object GeneratorFunction]',\n mapTag = '[object Map]',\n numberTag = '[object Number]',\n nullTag = '[object Null]',\n objectTag = '[object Object]',\n promiseTag = '[object Promise]',\n proxyTag = '[object Proxy]',\n regexpTag = '[object RegExp]',\n setTag = '[object Set]',\n stringTag = '[object String]',\n symbolTag = '[object Symbol]',\n undefinedTag = '[object Undefined]',\n weakMapTag = '[object WeakMap]',\n weakSetTag = '[object WeakSet]';\n\n var arrayBufferTag = '[object ArrayBuffer]',\n dataViewTag = '[object DataView]',\n float32Tag = '[object Float32Array]',\n float64Tag = '[object Float64Array]',\n int8Tag = '[object Int8Array]',\n int16Tag = '[object Int16Array]',\n int32Tag = '[object Int32Array]',\n uint8Tag = '[object Uint8Array]',\n uint8ClampedTag = '[object Uint8ClampedArray]',\n uint16Tag = '[object Uint16Array]',\n uint32Tag = '[object Uint32Array]';\n\n /** Used to match empty string literals in compiled template source. */\n var reEmptyStringLeading = /\\b__p \\+= '';/g,\n reEmptyStringMiddle = /\\b(__p \\+=) '' \\+/g,\n reEmptyStringTrailing = /(__e\\(.*?\\)|\\b__t\\)) \\+\\n'';/g;\n\n /** Used to match HTML entities and HTML characters. */\n var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,\n reUnescapedHtml = /[&<>\"']/g,\n reHasEscapedHtml = RegExp(reEscapedHtml.source),\n reHasUnescapedHtml = RegExp(reUnescapedHtml.source);\n\n /** Used to match template delimiters. */\n var reEscape = /<%-([\\s\\S]+?)%>/g,\n reEvaluate = /<%([\\s\\S]+?)%>/g,\n reInterpolate = /<%=([\\s\\S]+?)%>/g;\n\n /** Used to match property names within property paths. */\n var reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\n reIsPlainProp = /^\\w*$/,\n rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))/g;\n\n /**\n * Used to match `RegExp`\n * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n */\n var reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g,\n reHasRegExpChar = RegExp(reRegExpChar.source);\n\n /** Used to match leading and trailing whitespace. */\n var reTrim = /^\\s+|\\s+$/g,\n reTrimStart = /^\\s+/,\n reTrimEnd = /\\s+$/;\n\n /** Used to match wrap detail comments. */\n var reWrapComment = /\\{(?:\\n\\/\\* \\[wrapped with .+\\] \\*\\/)?\\n?/,\n reWrapDetails = /\\{\\n\\/\\* \\[wrapped with (.+)\\] \\*/,\n reSplitDetails = /,? & /;\n\n /** Used to match words composed of alphanumeric characters. */\n var reAsciiWord = /[^\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\x7f]+/g;\n\n /** Used to match backslashes in property paths. */\n var reEscapeChar = /\\\\(\\\\)?/g;\n\n /**\n * Used to match\n * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).\n */\n var reEsTemplate = /\\$\\{([^\\\\}]*(?:\\\\.[^\\\\}]*)*)\\}/g;\n\n /** Used to match `RegExp` flags from their coerced string values. */\n var reFlags = /\\w*$/;\n\n /** Used to detect bad signed hexadecimal string values. */\n var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n /** Used to detect binary string values. */\n var reIsBinary = /^0b[01]+$/i;\n\n /** Used to detect host constructors (Safari). */\n var reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n /** Used to detect octal string values. */\n var reIsOctal = /^0o[0-7]+$/i;\n\n /** Used to detect unsigned integer values. */\n var reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n /** Used to match Latin Unicode letters (excluding mathematical operators). */\n var reLatin = /[\\xc0-\\xd6\\xd8-\\xf6\\xf8-\\xff\\u0100-\\u017f]/g;\n\n /** Used to ensure capturing order of template delimiters. */\n var reNoMatch = /($^)/;\n\n /** Used to match unescaped characters in compiled string literals. */\n var reUnescapedString = /['\\n\\r\\u2028\\u2029\\\\]/g;\n\n /** Used to compose unicode character classes. */\n var rsAstralRange = '\\\\ud800-\\\\udfff',\n rsComboMarksRange = '\\\\u0300-\\\\u036f',\n reComboHalfMarksRange = '\\\\ufe20-\\\\ufe2f',\n rsComboSymbolsRange = '\\\\u20d0-\\\\u20ff',\n rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,\n rsDingbatRange = '\\\\u2700-\\\\u27bf',\n rsLowerRange = 'a-z\\\\xdf-\\\\xf6\\\\xf8-\\\\xff',\n rsMathOpRange = '\\\\xac\\\\xb1\\\\xd7\\\\xf7',\n rsNonCharRange = '\\\\x00-\\\\x2f\\\\x3a-\\\\x40\\\\x5b-\\\\x60\\\\x7b-\\\\xbf',\n rsPunctuationRange = '\\\\u2000-\\\\u206f',\n rsSpaceRange = ' \\\\t\\\\x0b\\\\f\\\\xa0\\\\ufeff\\\\n\\\\r\\\\u2028\\\\u2029\\\\u1680\\\\u180e\\\\u2000\\\\u2001\\\\u2002\\\\u2003\\\\u2004\\\\u2005\\\\u2006\\\\u2007\\\\u2008\\\\u2009\\\\u200a\\\\u202f\\\\u205f\\\\u3000',\n rsUpperRange = 'A-Z\\\\xc0-\\\\xd6\\\\xd8-\\\\xde',\n rsVarRange = '\\\\ufe0e\\\\ufe0f',\n rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;\n\n /** Used to compose unicode capture groups. */\n var rsApos = \"['\\u2019]\",\n rsAstral = '[' + rsAstralRange + ']',\n rsBreak = '[' + rsBreakRange + ']',\n rsCombo = '[' + rsComboRange + ']',\n rsDigits = '\\\\d+',\n rsDingbat = '[' + rsDingbatRange + ']',\n rsLower = '[' + rsLowerRange + ']',\n rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',\n rsFitz = '\\\\ud83c[\\\\udffb-\\\\udfff]',\n rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',\n rsNonAstral = '[^' + rsAstralRange + ']',\n rsRegional = '(?:\\\\ud83c[\\\\udde6-\\\\uddff]){2}',\n rsSurrPair = '[\\\\ud800-\\\\udbff][\\\\udc00-\\\\udfff]',\n rsUpper = '[' + rsUpperRange + ']',\n rsZWJ = '\\\\u200d';\n\n /** Used to compose unicode regexes. */\n var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',\n rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',\n rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',\n rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',\n reOptMod = rsModifier + '?',\n rsOptVar = '[' + rsVarRange + ']?',\n rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',\n rsOrdLower = '\\\\d*(?:1st|2nd|3rd|(?![123])\\\\dth)(?=\\\\b|[A-Z_])',\n rsOrdUpper = '\\\\d*(?:1ST|2ND|3RD|(?![123])\\\\dTH)(?=\\\\b|[a-z_])',\n rsSeq = rsOptVar + reOptMod + rsOptJoin,\n rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,\n rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';\n\n /** Used to match apostrophes. */\n var reApos = RegExp(rsApos, 'g');\n\n /**\n * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and\n * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).\n */\n var reComboMark = RegExp(rsCombo, 'g');\n\n /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */\n var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');\n\n /** Used to match complex or compound words. */\n var reUnicodeWord = RegExp([\n rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',\n rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',\n rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,\n rsUpper + '+' + rsOptContrUpper,\n rsOrdUpper,\n rsOrdLower,\n rsDigits,\n rsEmoji\n ].join('|'), 'g');\n\n /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */\n var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']');\n\n /** Used to detect strings that need a more robust regexp to match words. */\n var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;\n\n /** Used to assign default `context` object properties. */\n var contextProps = [\n 'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',\n 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',\n 'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',\n 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',\n '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'\n ];\n\n /** Used to make template sourceURLs easier to identify. */\n var templateCounter = -1;\n\n /** Used to identify `toStringTag` values of typed arrays. */\n var typedArrayTags = {};\n typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\n typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\n typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\n typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\n typedArrayTags[uint32Tag] = true;\n typedArrayTags[argsTag] = typedArrayTags[arrayTag] =\n typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\n typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\n typedArrayTags[errorTag] = typedArrayTags[funcTag] =\n typedArrayTags[mapTag] = typedArrayTags[numberTag] =\n typedArrayTags[objectTag] = typedArrayTags[regexpTag] =\n typedArrayTags[setTag] = typedArrayTags[stringTag] =\n typedArrayTags[weakMapTag] = false;\n\n /** Used to identify `toStringTag` values supported by `_.clone`. */\n var cloneableTags = {};\n cloneableTags[argsTag] = cloneableTags[arrayTag] =\n cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =\n cloneableTags[boolTag] = cloneableTags[dateTag] =\n cloneableTags[float32Tag] = cloneableTags[float64Tag] =\n cloneableTags[int8Tag] = cloneableTags[int16Tag] =\n cloneableTags[int32Tag] = cloneableTags[mapTag] =\n cloneableTags[numberTag] = cloneableTags[objectTag] =\n cloneableTags[regexpTag] = cloneableTags[setTag] =\n cloneableTags[stringTag] = cloneableTags[symbolTag] =\n cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =\n cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\n cloneableTags[errorTag] = cloneableTags[funcTag] =\n cloneableTags[weakMapTag] = false;\n\n /** Used to map Latin Unicode letters to basic Latin letters. */\n var deburredLetters = {\n // Latin-1 Supplement block.\n '\\xc0': 'A', '\\xc1': 'A', '\\xc2': 'A', '\\xc3': 'A', '\\xc4': 'A', '\\xc5': 'A',\n '\\xe0': 'a', '\\xe1': 'a', '\\xe2': 'a', '\\xe3': 'a', '\\xe4': 'a', '\\xe5': 'a',\n '\\xc7': 'C', '\\xe7': 'c',\n '\\xd0': 'D', '\\xf0': 'd',\n '\\xc8': 'E', '\\xc9': 'E', '\\xca': 'E', '\\xcb': 'E',\n '\\xe8': 'e', '\\xe9': 'e', '\\xea': 'e', '\\xeb': 'e',\n '\\xcc': 'I', '\\xcd': 'I', '\\xce': 'I', '\\xcf': 'I',\n '\\xec': 'i', '\\xed': 'i', '\\xee': 'i', '\\xef': 'i',\n '\\xd1': 'N', '\\xf1': 'n',\n '\\xd2': 'O', '\\xd3': 'O', '\\xd4': 'O', '\\xd5': 'O', '\\xd6': 'O', '\\xd8': 'O',\n '\\xf2': 'o', '\\xf3': 'o', '\\xf4': 'o', '\\xf5': 'o', '\\xf6': 'o', '\\xf8': 'o',\n '\\xd9': 'U', '\\xda': 'U', '\\xdb': 'U', '\\xdc': 'U',\n '\\xf9': 'u', '\\xfa': 'u', '\\xfb': 'u', '\\xfc': 'u',\n '\\xdd': 'Y', '\\xfd': 'y', '\\xff': 'y',\n '\\xc6': 'Ae', '\\xe6': 'ae',\n '\\xde': 'Th', '\\xfe': 'th',\n '\\xdf': 'ss',\n // Latin Extended-A block.\n '\\u0100': 'A', '\\u0102': 'A', '\\u0104': 'A',\n '\\u0101': 'a', '\\u0103': 'a', '\\u0105': 'a',\n '\\u0106': 'C', '\\u0108': 'C', '\\u010a': 'C', '\\u010c': 'C',\n '\\u0107': 'c', '\\u0109': 'c', '\\u010b': 'c', '\\u010d': 'c',\n '\\u010e': 'D', '\\u0110': 'D', '\\u010f': 'd', '\\u0111': 'd',\n '\\u0112': 'E', '\\u0114': 'E', '\\u0116': 'E', '\\u0118': 'E', '\\u011a': 'E',\n '\\u0113': 'e', '\\u0115': 'e', '\\u0117': 'e', '\\u0119': 'e', '\\u011b': 'e',\n '\\u011c': 'G', '\\u011e': 'G', '\\u0120': 'G', '\\u0122': 'G',\n '\\u011d': 'g', '\\u011f': 'g', '\\u0121': 'g', '\\u0123': 'g',\n '\\u0124': 'H', '\\u0126': 'H', '\\u0125': 'h', '\\u0127': 'h',\n '\\u0128': 'I', '\\u012a': 'I', '\\u012c': 'I', '\\u012e': 'I', '\\u0130': 'I',\n '\\u0129': 'i', '\\u012b': 'i', '\\u012d': 'i', '\\u012f': 'i', '\\u0131': 'i',\n '\\u0134': 'J', '\\u0135': 'j',\n '\\u0136': 'K', '\\u0137': 'k', '\\u0138': 'k',\n '\\u0139': 'L', '\\u013b': 'L', '\\u013d': 'L', '\\u013f': 'L', '\\u0141': 'L',\n '\\u013a': 'l', '\\u013c': 'l', '\\u013e': 'l', '\\u0140': 'l', '\\u0142': 'l',\n '\\u0143': 'N', '\\u0145': 'N', '\\u0147': 'N', '\\u014a': 'N',\n '\\u0144': 'n', '\\u0146': 'n', '\\u0148': 'n', '\\u014b': 'n',\n '\\u014c': 'O', '\\u014e': 'O', '\\u0150': 'O',\n '\\u014d': 'o', '\\u014f': 'o', '\\u0151': 'o',\n '\\u0154': 'R', '\\u0156': 'R', '\\u0158': 'R',\n '\\u0155': 'r', '\\u0157': 'r', '\\u0159': 'r',\n '\\u015a': 'S', '\\u015c': 'S', '\\u015e': 'S', '\\u0160': 'S',\n '\\u015b': 's', '\\u015d': 's', '\\u015f': 's', '\\u0161': 's',\n '\\u0162': 'T', '\\u0164': 'T', '\\u0166': 'T',\n '\\u0163': 't', '\\u0165': 't', '\\u0167': 't',\n '\\u0168': 'U', '\\u016a': 'U', '\\u016c': 'U', '\\u016e': 'U', '\\u0170': 'U', '\\u0172': 'U',\n '\\u0169': 'u', '\\u016b': 'u', '\\u016d': 'u', '\\u016f': 'u', '\\u0171': 'u', '\\u0173': 'u',\n '\\u0174': 'W', '\\u0175': 'w',\n '\\u0176': 'Y', '\\u0177': 'y', '\\u0178': 'Y',\n '\\u0179': 'Z', '\\u017b': 'Z', '\\u017d': 'Z',\n '\\u017a': 'z', '\\u017c': 'z', '\\u017e': 'z',\n '\\u0132': 'IJ', '\\u0133': 'ij',\n '\\u0152': 'Oe', '\\u0153': 'oe',\n '\\u0149': \"'n\", '\\u017f': 's'\n };\n\n /** Used to map characters to HTML entities. */\n var htmlEscapes = {\n '&': '&',\n '<': '<',\n '>': '>',\n '\"': '"',\n \"'\": '''\n };\n\n /** Used to map HTML entities to characters. */\n var htmlUnescapes = {\n '&': '&',\n '<': '<',\n '>': '>',\n '"': '\"',\n ''': \"'\"\n };\n\n /** Used to escape characters for inclusion in compiled string literals. */\n var stringEscapes = {\n '\\\\': '\\\\',\n \"'\": \"'\",\n '\\n': 'n',\n '\\r': 'r',\n '\\u2028': 'u2028',\n '\\u2029': 'u2029'\n };\n\n /** Built-in method references without a dependency on `root`. */\n var freeParseFloat = parseFloat,\n freeParseInt = parseInt;\n\n /** Detect free variable `global` from Node.js. */\n var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\n /** Detect free variable `self`. */\n var freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n /** Used as a reference to the global object. */\n var root = freeGlobal || freeSelf || Function('return this')();\n\n /** Detect free variable `exports`. */\n var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n /** Detect free variable `module`. */\n var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n /** Detect the popular CommonJS extension `module.exports`. */\n var moduleExports = freeModule && freeModule.exports === freeExports;\n\n /** Detect free variable `process` from Node.js. */\n var freeProcess = moduleExports && freeGlobal.process;\n\n /** Used to access faster Node.js helpers. */\n var nodeUtil = (function() {\n try {\n // Use `util.types` for Node.js 10+.\n var types = freeModule && freeModule.require && freeModule.require('util').types;\n\n if (types) {\n return types;\n }\n\n // Legacy `process.binding('util')` for Node.js < 10.\n return freeProcess && freeProcess.binding && freeProcess.binding('util');\n } catch (e) {}\n }());\n\n /* Node.js helper references. */\n var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,\n nodeIsDate = nodeUtil && nodeUtil.isDate,\n nodeIsMap = nodeUtil && nodeUtil.isMap,\n nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,\n nodeIsSet = nodeUtil && nodeUtil.isSet,\n nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\n\n /*--------------------------------------------------------------------------*/\n\n /**\n * A faster alternative to `Function#apply`, this function invokes `func`\n * with the `this` binding of `thisArg` and the arguments of `args`.\n *\n * @private\n * @param {Function} func The function to invoke.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {Array} args The arguments to invoke `func` with.\n * @returns {*} Returns the result of `func`.\n */\n function apply(func, thisArg, args) {\n switch (args.length) {\n case 0: return func.call(thisArg);\n case 1: return func.call(thisArg, args[0]);\n case 2: return func.call(thisArg, args[0], args[1]);\n case 3: return func.call(thisArg, args[0], args[1], args[2]);\n }\n return func.apply(thisArg, args);\n }\n\n /**\n * A specialized version of `baseAggregator` for arrays.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform keys.\n * @param {Object} accumulator The initial aggregated object.\n * @returns {Function} Returns `accumulator`.\n */\n function arrayAggregator(array, setter, iteratee, accumulator) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n var value = array[index];\n setter(accumulator, value, iteratee(value), array);\n }\n return accumulator;\n }\n\n /**\n * A specialized version of `_.forEach` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\n function arrayEach(array, iteratee) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (iteratee(array[index], index, array) === false) {\n break;\n }\n }\n return array;\n }\n\n /**\n * A specialized version of `_.forEachRight` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\n function arrayEachRight(array, iteratee) {\n var length = array == null ? 0 : array.length;\n\n while (length--) {\n if (iteratee(array[length], length, array) === false) {\n break;\n }\n }\n return array;\n }\n\n /**\n * A specialized version of `_.every` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`.\n */\n function arrayEvery(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (!predicate(array[index], index, array)) {\n return false;\n }\n }\n return true;\n }\n\n /**\n * A specialized version of `_.filter` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\n function arrayFilter(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n if (predicate(value, index, array)) {\n result[resIndex++] = value;\n }\n }\n return result;\n }\n\n /**\n * A specialized version of `_.includes` for arrays without support for\n * specifying an index to search from.\n *\n * @private\n * @param {Array} [array] The array to inspect.\n * @param {*} target The value to search for.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\n function arrayIncludes(array, value) {\n var length = array == null ? 0 : array.length;\n return !!length && baseIndexOf(array, value, 0) > -1;\n }\n\n /**\n * This function is like `arrayIncludes` except that it accepts a comparator.\n *\n * @private\n * @param {Array} [array] The array to inspect.\n * @param {*} target The value to search for.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\n function arrayIncludesWith(array, value, comparator) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (comparator(value, array[index])) {\n return true;\n }\n }\n return false;\n }\n\n /**\n * A specialized version of `_.map` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\n function arrayMap(array, iteratee) {\n var index = -1,\n length = array == null ? 0 : array.length,\n result = Array(length);\n\n while (++index < length) {\n result[index] = iteratee(array[index], index, array);\n }\n return result;\n }\n\n /**\n * Appends the elements of `values` to `array`.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to append.\n * @returns {Array} Returns `array`.\n */\n function arrayPush(array, values) {\n var index = -1,\n length = values.length,\n offset = array.length;\n\n while (++index < length) {\n array[offset + index] = values[index];\n }\n return array;\n }\n\n /**\n * A specialized version of `_.reduce` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the first element of `array` as\n * the initial value.\n * @returns {*} Returns the accumulated value.\n */\n function arrayReduce(array, iteratee, accumulator, initAccum) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n if (initAccum && length) {\n accumulator = array[++index];\n }\n while (++index < length) {\n accumulator = iteratee(accumulator, array[index], index, array);\n }\n return accumulator;\n }\n\n /**\n * A specialized version of `_.reduceRight` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the last element of `array` as\n * the initial value.\n * @returns {*} Returns the accumulated value.\n */\n function arrayReduceRight(array, iteratee, accumulator, initAccum) {\n var length = array == null ? 0 : array.length;\n if (initAccum && length) {\n accumulator = array[--length];\n }\n while (length--) {\n accumulator = iteratee(accumulator, array[length], length, array);\n }\n return accumulator;\n }\n\n /**\n * A specialized version of `_.some` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n */\n function arraySome(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (predicate(array[index], index, array)) {\n return true;\n }\n }\n return false;\n }\n\n /**\n * Gets the size of an ASCII `string`.\n *\n * @private\n * @param {string} string The string inspect.\n * @returns {number} Returns the string size.\n */\n var asciiSize = baseProperty('length');\n\n /**\n * Converts an ASCII `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n function asciiToArray(string) {\n return string.split('');\n }\n\n /**\n * Splits an ASCII `string` into an array of its words.\n *\n * @private\n * @param {string} The string to inspect.\n * @returns {Array} Returns the words of `string`.\n */\n function asciiWords(string) {\n return string.match(reAsciiWord) || [];\n }\n\n /**\n * The base implementation of methods like `_.findKey` and `_.findLastKey`,\n * without support for iteratee shorthands, which iterates over `collection`\n * using `eachFunc`.\n *\n * @private\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} predicate The function invoked per iteration.\n * @param {Function} eachFunc The function to iterate over `collection`.\n * @returns {*} Returns the found element or its key, else `undefined`.\n */\n function baseFindKey(collection, predicate, eachFunc) {\n var result;\n eachFunc(collection, function(value, key, collection) {\n if (predicate(value, key, collection)) {\n result = key;\n return false;\n }\n });\n return result;\n }\n\n /**\n * The base implementation of `_.findIndex` and `_.findLastIndex` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} predicate The function invoked per iteration.\n * @param {number} fromIndex The index to search from.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function baseFindIndex(array, predicate, fromIndex, fromRight) {\n var length = array.length,\n index = fromIndex + (fromRight ? 1 : -1);\n\n while ((fromRight ? index-- : ++index < length)) {\n if (predicate(array[index], index, array)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * The base implementation of `_.indexOf` without `fromIndex` bounds checks.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function baseIndexOf(array, value, fromIndex) {\n return value === value\n ? strictIndexOf(array, value, fromIndex)\n : baseFindIndex(array, baseIsNaN, fromIndex);\n }\n\n /**\n * This function is like `baseIndexOf` except that it accepts a comparator.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function baseIndexOfWith(array, value, fromIndex, comparator) {\n var index = fromIndex - 1,\n length = array.length;\n\n while (++index < length) {\n if (comparator(array[index], value)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * The base implementation of `_.isNaN` without support for number objects.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n */\n function baseIsNaN(value) {\n return value !== value;\n }\n\n /**\n * The base implementation of `_.mean` and `_.meanBy` without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {number} Returns the mean.\n */\n function baseMean(array, iteratee) {\n var length = array == null ? 0 : array.length;\n return length ? (baseSum(array, iteratee) / length) : NAN;\n }\n\n /**\n * The base implementation of `_.property` without support for deep paths.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\n function baseProperty(key) {\n return function(object) {\n return object == null ? undefined : object[key];\n };\n }\n\n /**\n * The base implementation of `_.propertyOf` without support for deep paths.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Function} Returns the new accessor function.\n */\n function basePropertyOf(object) {\n return function(key) {\n return object == null ? undefined : object[key];\n };\n }\n\n /**\n * The base implementation of `_.reduce` and `_.reduceRight`, without support\n * for iteratee shorthands, which iterates over `collection` using `eachFunc`.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} accumulator The initial value.\n * @param {boolean} initAccum Specify using the first or last element of\n * `collection` as the initial value.\n * @param {Function} eachFunc The function to iterate over `collection`.\n * @returns {*} Returns the accumulated value.\n */\n function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {\n eachFunc(collection, function(value, index, collection) {\n accumulator = initAccum\n ? (initAccum = false, value)\n : iteratee(accumulator, value, index, collection);\n });\n return accumulator;\n }\n\n /**\n * The base implementation of `_.sortBy` which uses `comparer` to define the\n * sort order of `array` and replaces criteria objects with their corresponding\n * values.\n *\n * @private\n * @param {Array} array The array to sort.\n * @param {Function} comparer The function to define sort order.\n * @returns {Array} Returns `array`.\n */\n function baseSortBy(array, comparer) {\n var length = array.length;\n\n array.sort(comparer);\n while (length--) {\n array[length] = array[length].value;\n }\n return array;\n }\n\n /**\n * The base implementation of `_.sum` and `_.sumBy` without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {number} Returns the sum.\n */\n function baseSum(array, iteratee) {\n var result,\n index = -1,\n length = array.length;\n\n while (++index < length) {\n var current = iteratee(array[index]);\n if (current !== undefined) {\n result = result === undefined ? current : (result + current);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.times` without support for iteratee shorthands\n * or max array length checks.\n *\n * @private\n * @param {number} n The number of times to invoke `iteratee`.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the array of results.\n */\n function baseTimes(n, iteratee) {\n var index = -1,\n result = Array(n);\n\n while (++index < n) {\n result[index] = iteratee(index);\n }\n return result;\n }\n\n /**\n * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array\n * of key-value pairs for `object` corresponding to the property names of `props`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} props The property names to get values for.\n * @returns {Object} Returns the key-value pairs.\n */\n function baseToPairs(object, props) {\n return arrayMap(props, function(key) {\n return [key, object[key]];\n });\n }\n\n /**\n * The base implementation of `_.unary` without support for storing metadata.\n *\n * @private\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n */\n function baseUnary(func) {\n return function(value) {\n return func(value);\n };\n }\n\n /**\n * The base implementation of `_.values` and `_.valuesIn` which creates an\n * array of `object` property values corresponding to the property names\n * of `props`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} props The property names to get values for.\n * @returns {Object} Returns the array of property values.\n */\n function baseValues(object, props) {\n return arrayMap(props, function(key) {\n return object[key];\n });\n }\n\n /**\n * Checks if a `cache` value for `key` exists.\n *\n * @private\n * @param {Object} cache The cache to query.\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function cacheHas(cache, key) {\n return cache.has(key);\n }\n\n /**\n * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol\n * that is not found in the character symbols.\n *\n * @private\n * @param {Array} strSymbols The string symbols to inspect.\n * @param {Array} chrSymbols The character symbols to find.\n * @returns {number} Returns the index of the first unmatched string symbol.\n */\n function charsStartIndex(strSymbols, chrSymbols) {\n var index = -1,\n length = strSymbols.length;\n\n while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n return index;\n }\n\n /**\n * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol\n * that is not found in the character symbols.\n *\n * @private\n * @param {Array} strSymbols The string symbols to inspect.\n * @param {Array} chrSymbols The character symbols to find.\n * @returns {number} Returns the index of the last unmatched string symbol.\n */\n function charsEndIndex(strSymbols, chrSymbols) {\n var index = strSymbols.length;\n\n while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n return index;\n }\n\n /**\n * Gets the number of `placeholder` occurrences in `array`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} placeholder The placeholder to search for.\n * @returns {number} Returns the placeholder count.\n */\n function countHolders(array, placeholder) {\n var length = array.length,\n result = 0;\n\n while (length--) {\n if (array[length] === placeholder) {\n ++result;\n }\n }\n return result;\n }\n\n /**\n * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A\n * letters to basic Latin letters.\n *\n * @private\n * @param {string} letter The matched letter to deburr.\n * @returns {string} Returns the deburred letter.\n */\n var deburrLetter = basePropertyOf(deburredLetters);\n\n /**\n * Used by `_.escape` to convert characters to HTML entities.\n *\n * @private\n * @param {string} chr The matched character to escape.\n * @returns {string} Returns the escaped character.\n */\n var escapeHtmlChar = basePropertyOf(htmlEscapes);\n\n /**\n * Used by `_.template` to escape characters for inclusion in compiled string literals.\n *\n * @private\n * @param {string} chr The matched character to escape.\n * @returns {string} Returns the escaped character.\n */\n function escapeStringChar(chr) {\n return '\\\\' + stringEscapes[chr];\n }\n\n /**\n * Gets the value at `key` of `object`.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\n function getValue(object, key) {\n return object == null ? undefined : object[key];\n }\n\n /**\n * Checks if `string` contains Unicode symbols.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {boolean} Returns `true` if a symbol is found, else `false`.\n */\n function hasUnicode(string) {\n return reHasUnicode.test(string);\n }\n\n /**\n * Checks if `string` contains a word composed of Unicode symbols.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {boolean} Returns `true` if a word is found, else `false`.\n */\n function hasUnicodeWord(string) {\n return reHasUnicodeWord.test(string);\n }\n\n /**\n * Converts `iterator` to an array.\n *\n * @private\n * @param {Object} iterator The iterator to convert.\n * @returns {Array} Returns the converted array.\n */\n function iteratorToArray(iterator) {\n var data,\n result = [];\n\n while (!(data = iterator.next()).done) {\n result.push(data.value);\n }\n return result;\n }\n\n /**\n * Converts `map` to its key-value pairs.\n *\n * @private\n * @param {Object} map The map to convert.\n * @returns {Array} Returns the key-value pairs.\n */\n function mapToArray(map) {\n var index = -1,\n result = Array(map.size);\n\n map.forEach(function(value, key) {\n result[++index] = [key, value];\n });\n return result;\n }\n\n /**\n * Creates a unary function that invokes `func` with its argument transformed.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {Function} transform The argument transform.\n * @returns {Function} Returns the new function.\n */\n function overArg(func, transform) {\n return function(arg) {\n return func(transform(arg));\n };\n }\n\n /**\n * Replaces all `placeholder` elements in `array` with an internal placeholder\n * and returns an array of their indexes.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {*} placeholder The placeholder to replace.\n * @returns {Array} Returns the new array of placeholder indexes.\n */\n function replaceHolders(array, placeholder) {\n var index = -1,\n length = array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n if (value === placeholder || value === PLACEHOLDER) {\n array[index] = PLACEHOLDER;\n result[resIndex++] = index;\n }\n }\n return result;\n }\n\n /**\n * Converts `set` to an array of its values.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the values.\n */\n function setToArray(set) {\n var index = -1,\n result = Array(set.size);\n\n set.forEach(function(value) {\n result[++index] = value;\n });\n return result;\n }\n\n /**\n * Converts `set` to its value-value pairs.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the value-value pairs.\n */\n function setToPairs(set) {\n var index = -1,\n result = Array(set.size);\n\n set.forEach(function(value) {\n result[++index] = [value, value];\n });\n return result;\n }\n\n /**\n * A specialized version of `_.indexOf` which performs strict equality\n * comparisons of values, i.e. `===`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function strictIndexOf(array, value, fromIndex) {\n var index = fromIndex - 1,\n length = array.length;\n\n while (++index < length) {\n if (array[index] === value) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * A specialized version of `_.lastIndexOf` which performs strict equality\n * comparisons of values, i.e. `===`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function strictLastIndexOf(array, value, fromIndex) {\n var index = fromIndex + 1;\n while (index--) {\n if (array[index] === value) {\n return index;\n }\n }\n return index;\n }\n\n /**\n * Gets the number of symbols in `string`.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {number} Returns the string size.\n */\n function stringSize(string) {\n return hasUnicode(string)\n ? unicodeSize(string)\n : asciiSize(string);\n }\n\n /**\n * Converts `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n function stringToArray(string) {\n return hasUnicode(string)\n ? unicodeToArray(string)\n : asciiToArray(string);\n }\n\n /**\n * Used by `_.unescape` to convert HTML entities to characters.\n *\n * @private\n * @param {string} chr The matched character to unescape.\n * @returns {string} Returns the unescaped character.\n */\n var unescapeHtmlChar = basePropertyOf(htmlUnescapes);\n\n /**\n * Gets the size of a Unicode `string`.\n *\n * @private\n * @param {string} string The string inspect.\n * @returns {number} Returns the string size.\n */\n function unicodeSize(string) {\n var result = reUnicode.lastIndex = 0;\n while (reUnicode.test(string)) {\n ++result;\n }\n return result;\n }\n\n /**\n * Converts a Unicode `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n function unicodeToArray(string) {\n return string.match(reUnicode) || [];\n }\n\n /**\n * Splits a Unicode `string` into an array of its words.\n *\n * @private\n * @param {string} The string to inspect.\n * @returns {Array} Returns the words of `string`.\n */\n function unicodeWords(string) {\n return string.match(reUnicodeWord) || [];\n }\n\n /*--------------------------------------------------------------------------*/\n\n /**\n * Create a new pristine `lodash` function using the `context` object.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Util\n * @param {Object} [context=root] The context object.\n * @returns {Function} Returns a new `lodash` function.\n * @example\n *\n * _.mixin({ 'foo': _.constant('foo') });\n *\n * var lodash = _.runInContext();\n * lodash.mixin({ 'bar': lodash.constant('bar') });\n *\n * _.isFunction(_.foo);\n * // => true\n * _.isFunction(_.bar);\n * // => false\n *\n * lodash.isFunction(lodash.foo);\n * // => false\n * lodash.isFunction(lodash.bar);\n * // => true\n *\n * // Create a suped-up `defer` in Node.js.\n * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;\n */\n var runInContext = (function runInContext(context) {\n context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));\n\n /** Built-in constructor references. */\n var Array = context.Array,\n Date = context.Date,\n Error = context.Error,\n Function = context.Function,\n Math = context.Math,\n Object = context.Object,\n RegExp = context.RegExp,\n String = context.String,\n TypeError = context.TypeError;\n\n /** Used for built-in method references. */\n var arrayProto = Array.prototype,\n funcProto = Function.prototype,\n objectProto = Object.prototype;\n\n /** Used to detect overreaching core-js shims. */\n var coreJsData = context['__core-js_shared__'];\n\n /** Used to resolve the decompiled source of functions. */\n var funcToString = funcProto.toString;\n\n /** Used to check objects for own properties. */\n var hasOwnProperty = objectProto.hasOwnProperty;\n\n /** Used to generate unique IDs. */\n var idCounter = 0;\n\n /** Used to detect methods masquerading as native. */\n var maskSrcKey = (function() {\n var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n return uid ? ('Symbol(src)_1.' + uid) : '';\n }());\n\n /**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\n var nativeObjectToString = objectProto.toString;\n\n /** Used to infer the `Object` constructor. */\n var objectCtorString = funcToString.call(Object);\n\n /** Used to restore the original `_` reference in `_.noConflict`. */\n var oldDash = root._;\n\n /** Used to detect if a method is native. */\n var reIsNative = RegExp('^' +\n funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n );\n\n /** Built-in value references. */\n var Buffer = moduleExports ? context.Buffer : undefined,\n Symbol = context.Symbol,\n Uint8Array = context.Uint8Array,\n allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,\n getPrototype = overArg(Object.getPrototypeOf, Object),\n objectCreate = Object.create,\n propertyIsEnumerable = objectProto.propertyIsEnumerable,\n splice = arrayProto.splice,\n spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,\n symIterator = Symbol ? Symbol.iterator : undefined,\n symToStringTag = Symbol ? Symbol.toStringTag : undefined;\n\n var defineProperty = (function() {\n try {\n var func = getNative(Object, 'defineProperty');\n func({}, '', {});\n return func;\n } catch (e) {}\n }());\n\n /** Mocked built-ins. */\n var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,\n ctxNow = Date && Date.now !== root.Date.now && Date.now,\n ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;\n\n /* Built-in method references for those with the same name as other `lodash` methods. */\n var nativeCeil = Math.ceil,\n nativeFloor = Math.floor,\n nativeGetSymbols = Object.getOwnPropertySymbols,\n nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,\n nativeIsFinite = context.isFinite,\n nativeJoin = arrayProto.join,\n nativeKeys = overArg(Object.keys, Object),\n nativeMax = Math.max,\n nativeMin = Math.min,\n nativeNow = Date.now,\n nativeParseInt = context.parseInt,\n nativeRandom = Math.random,\n nativeReverse = arrayProto.reverse;\n\n /* Built-in method references that are verified to be native. */\n var DataView = getNative(context, 'DataView'),\n Map = getNative(context, 'Map'),\n Promise = getNative(context, 'Promise'),\n Set = getNative(context, 'Set'),\n WeakMap = getNative(context, 'WeakMap'),\n nativeCreate = getNative(Object, 'create');\n\n /** Used to store function metadata. */\n var metaMap = WeakMap && new WeakMap;\n\n /** Used to lookup unminified function names. */\n var realNames = {};\n\n /** Used to detect maps, sets, and weakmaps. */\n var dataViewCtorString = toSource(DataView),\n mapCtorString = toSource(Map),\n promiseCtorString = toSource(Promise),\n setCtorString = toSource(Set),\n weakMapCtorString = toSource(WeakMap);\n\n /** Used to convert symbols to primitives and strings. */\n var symbolProto = Symbol ? Symbol.prototype : undefined,\n symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,\n symbolToString = symbolProto ? symbolProto.toString : undefined;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a `lodash` object which wraps `value` to enable implicit method\n * chain sequences. Methods that operate on and return arrays, collections,\n * and functions can be chained together. Methods that retrieve a single value\n * or may return a primitive value will automatically end the chain sequence\n * and return the unwrapped value. Otherwise, the value must be unwrapped\n * with `_#value`.\n *\n * Explicit chain sequences, which must be unwrapped with `_#value`, may be\n * enabled using `_.chain`.\n *\n * The execution of chained methods is lazy, that is, it's deferred until\n * `_#value` is implicitly or explicitly called.\n *\n * Lazy evaluation allows several methods to support shortcut fusion.\n * Shortcut fusion is an optimization to merge iteratee calls; this avoids\n * the creation of intermediate arrays and can greatly reduce the number of\n * iteratee executions. Sections of a chain sequence qualify for shortcut\n * fusion if the section is applied to an array and iteratees accept only\n * one argument. The heuristic for whether a section qualifies for shortcut\n * fusion is subject to change.\n *\n * Chaining is supported in custom builds as long as the `_#value` method is\n * directly or indirectly included in the build.\n *\n * In addition to lodash methods, wrappers have `Array` and `String` methods.\n *\n * The wrapper `Array` methods are:\n * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`\n *\n * The wrapper `String` methods are:\n * `replace` and `split`\n *\n * The wrapper methods that support shortcut fusion are:\n * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,\n * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,\n * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`\n *\n * The chainable wrapper methods are:\n * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,\n * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,\n * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,\n * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,\n * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,\n * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,\n * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,\n * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,\n * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,\n * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,\n * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,\n * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,\n * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,\n * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,\n * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,\n * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,\n * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,\n * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,\n * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,\n * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,\n * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,\n * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,\n * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,\n * `zipObject`, `zipObjectDeep`, and `zipWith`\n *\n * The wrapper methods that are **not** chainable by default are:\n * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,\n * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,\n * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,\n * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,\n * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,\n * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,\n * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,\n * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,\n * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,\n * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,\n * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,\n * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,\n * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,\n * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,\n * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,\n * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,\n * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,\n * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,\n * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,\n * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,\n * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,\n * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,\n * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,\n * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,\n * `upperFirst`, `value`, and `words`\n *\n * @name _\n * @constructor\n * @category Seq\n * @param {*} value The value to wrap in a `lodash` instance.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var wrapped = _([1, 2, 3]);\n *\n * // Returns an unwrapped value.\n * wrapped.reduce(_.add);\n * // => 6\n *\n * // Returns a wrapped value.\n * var squares = wrapped.map(square);\n *\n * _.isArray(squares);\n * // => false\n *\n * _.isArray(squares.value());\n * // => true\n */\n function lodash(value) {\n if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {\n if (value instanceof LodashWrapper) {\n return value;\n }\n if (hasOwnProperty.call(value, '__wrapped__')) {\n return wrapperClone(value);\n }\n }\n return new LodashWrapper(value);\n }\n\n /**\n * The base implementation of `_.create` without support for assigning\n * properties to the created object.\n *\n * @private\n * @param {Object} proto The object to inherit from.\n * @returns {Object} Returns the new object.\n */\n var baseCreate = (function() {\n function object() {}\n return function(proto) {\n if (!isObject(proto)) {\n return {};\n }\n if (objectCreate) {\n return objectCreate(proto);\n }\n object.prototype = proto;\n var result = new object;\n object.prototype = undefined;\n return result;\n };\n }());\n\n /**\n * The function whose prototype chain sequence wrappers inherit from.\n *\n * @private\n */\n function baseLodash() {\n // No operation performed.\n }\n\n /**\n * The base constructor for creating `lodash` wrapper objects.\n *\n * @private\n * @param {*} value The value to wrap.\n * @param {boolean} [chainAll] Enable explicit method chain sequences.\n */\n function LodashWrapper(value, chainAll) {\n this.__wrapped__ = value;\n this.__actions__ = [];\n this.__chain__ = !!chainAll;\n this.__index__ = 0;\n this.__values__ = undefined;\n }\n\n /**\n * By default, the template delimiters used by lodash are like those in\n * embedded Ruby (ERB) as well as ES2015 template strings. Change the\n * following template settings to use alternative delimiters.\n *\n * @static\n * @memberOf _\n * @type {Object}\n */\n lodash.templateSettings = {\n\n /**\n * Used to detect `data` property values to be HTML-escaped.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'escape': reEscape,\n\n /**\n * Used to detect code to be evaluated.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'evaluate': reEvaluate,\n\n /**\n * Used to detect `data` property values to inject.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'interpolate': reInterpolate,\n\n /**\n * Used to reference the data object in the template text.\n *\n * @memberOf _.templateSettings\n * @type {string}\n */\n 'variable': '',\n\n /**\n * Used to import variables into the compiled template.\n *\n * @memberOf _.templateSettings\n * @type {Object}\n */\n 'imports': {\n\n /**\n * A reference to the `lodash` function.\n *\n * @memberOf _.templateSettings.imports\n * @type {Function}\n */\n '_': lodash\n }\n };\n\n // Ensure wrappers are instances of `baseLodash`.\n lodash.prototype = baseLodash.prototype;\n lodash.prototype.constructor = lodash;\n\n LodashWrapper.prototype = baseCreate(baseLodash.prototype);\n LodashWrapper.prototype.constructor = LodashWrapper;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.\n *\n * @private\n * @constructor\n * @param {*} value The value to wrap.\n */\n function LazyWrapper(value) {\n this.__wrapped__ = value;\n this.__actions__ = [];\n this.__dir__ = 1;\n this.__filtered__ = false;\n this.__iteratees__ = [];\n this.__takeCount__ = MAX_ARRAY_LENGTH;\n this.__views__ = [];\n }\n\n /**\n * Creates a clone of the lazy wrapper object.\n *\n * @private\n * @name clone\n * @memberOf LazyWrapper\n * @returns {Object} Returns the cloned `LazyWrapper` object.\n */\n function lazyClone() {\n var result = new LazyWrapper(this.__wrapped__);\n result.__actions__ = copyArray(this.__actions__);\n result.__dir__ = this.__dir__;\n result.__filtered__ = this.__filtered__;\n result.__iteratees__ = copyArray(this.__iteratees__);\n result.__takeCount__ = this.__takeCount__;\n result.__views__ = copyArray(this.__views__);\n return result;\n }\n\n /**\n * Reverses the direction of lazy iteration.\n *\n * @private\n * @name reverse\n * @memberOf LazyWrapper\n * @returns {Object} Returns the new reversed `LazyWrapper` object.\n */\n function lazyReverse() {\n if (this.__filtered__) {\n var result = new LazyWrapper(this);\n result.__dir__ = -1;\n result.__filtered__ = true;\n } else {\n result = this.clone();\n result.__dir__ *= -1;\n }\n return result;\n }\n\n /**\n * Extracts the unwrapped value from its lazy wrapper.\n *\n * @private\n * @name value\n * @memberOf LazyWrapper\n * @returns {*} Returns the unwrapped value.\n */\n function lazyValue() {\n var array = this.__wrapped__.value(),\n dir = this.__dir__,\n isArr = isArray(array),\n isRight = dir < 0,\n arrLength = isArr ? array.length : 0,\n view = getView(0, arrLength, this.__views__),\n start = view.start,\n end = view.end,\n length = end - start,\n index = isRight ? end : (start - 1),\n iteratees = this.__iteratees__,\n iterLength = iteratees.length,\n resIndex = 0,\n takeCount = nativeMin(length, this.__takeCount__);\n\n if (!isArr || (!isRight && arrLength == length && takeCount == length)) {\n return baseWrapperValue(array, this.__actions__);\n }\n var result = [];\n\n outer:\n while (length-- && resIndex < takeCount) {\n index += dir;\n\n var iterIndex = -1,\n value = array[index];\n\n while (++iterIndex < iterLength) {\n var data = iteratees[iterIndex],\n iteratee = data.iteratee,\n type = data.type,\n computed = iteratee(value);\n\n if (type == LAZY_MAP_FLAG) {\n value = computed;\n } else if (!computed) {\n if (type == LAZY_FILTER_FLAG) {\n continue outer;\n } else {\n break outer;\n }\n }\n }\n result[resIndex++] = value;\n }\n return result;\n }\n\n // Ensure `LazyWrapper` is an instance of `baseLodash`.\n LazyWrapper.prototype = baseCreate(baseLodash.prototype);\n LazyWrapper.prototype.constructor = LazyWrapper;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a hash object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function Hash(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n\n /**\n * Removes all key-value entries from the hash.\n *\n * @private\n * @name clear\n * @memberOf Hash\n */\n function hashClear() {\n this.__data__ = nativeCreate ? nativeCreate(null) : {};\n this.size = 0;\n }\n\n /**\n * Removes `key` and its value from the hash.\n *\n * @private\n * @name delete\n * @memberOf Hash\n * @param {Object} hash The hash to modify.\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function hashDelete(key) {\n var result = this.has(key) && delete this.__data__[key];\n this.size -= result ? 1 : 0;\n return result;\n }\n\n /**\n * Gets the hash value for `key`.\n *\n * @private\n * @name get\n * @memberOf Hash\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function hashGet(key) {\n var data = this.__data__;\n if (nativeCreate) {\n var result = data[key];\n return result === HASH_UNDEFINED ? undefined : result;\n }\n return hasOwnProperty.call(data, key) ? data[key] : undefined;\n }\n\n /**\n * Checks if a hash value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Hash\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function hashHas(key) {\n var data = this.__data__;\n return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);\n }\n\n /**\n * Sets the hash `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Hash\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the hash instance.\n */\n function hashSet(key, value) {\n var data = this.__data__;\n this.size += this.has(key) ? 0 : 1;\n data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\n return this;\n }\n\n // Add methods to `Hash`.\n Hash.prototype.clear = hashClear;\n Hash.prototype['delete'] = hashDelete;\n Hash.prototype.get = hashGet;\n Hash.prototype.has = hashHas;\n Hash.prototype.set = hashSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an list cache object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function ListCache(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n\n /**\n * Removes all key-value entries from the list cache.\n *\n * @private\n * @name clear\n * @memberOf ListCache\n */\n function listCacheClear() {\n this.__data__ = [];\n this.size = 0;\n }\n\n /**\n * Removes `key` and its value from the list cache.\n *\n * @private\n * @name delete\n * @memberOf ListCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function listCacheDelete(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n return false;\n }\n var lastIndex = data.length - 1;\n if (index == lastIndex) {\n data.pop();\n } else {\n splice.call(data, index, 1);\n }\n --this.size;\n return true;\n }\n\n /**\n * Gets the list cache value for `key`.\n *\n * @private\n * @name get\n * @memberOf ListCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function listCacheGet(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n return index < 0 ? undefined : data[index][1];\n }\n\n /**\n * Checks if a list cache value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf ListCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function listCacheHas(key) {\n return assocIndexOf(this.__data__, key) > -1;\n }\n\n /**\n * Sets the list cache `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf ListCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the list cache instance.\n */\n function listCacheSet(key, value) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n ++this.size;\n data.push([key, value]);\n } else {\n data[index][1] = value;\n }\n return this;\n }\n\n // Add methods to `ListCache`.\n ListCache.prototype.clear = listCacheClear;\n ListCache.prototype['delete'] = listCacheDelete;\n ListCache.prototype.get = listCacheGet;\n ListCache.prototype.has = listCacheHas;\n ListCache.prototype.set = listCacheSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a map cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function MapCache(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n\n /**\n * Removes all key-value entries from the map.\n *\n * @private\n * @name clear\n * @memberOf MapCache\n */\n function mapCacheClear() {\n this.size = 0;\n this.__data__ = {\n 'hash': new Hash,\n 'map': new (Map || ListCache),\n 'string': new Hash\n };\n }\n\n /**\n * Removes `key` and its value from the map.\n *\n * @private\n * @name delete\n * @memberOf MapCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function mapCacheDelete(key) {\n var result = getMapData(this, key)['delete'](key);\n this.size -= result ? 1 : 0;\n return result;\n }\n\n /**\n * Gets the map value for `key`.\n *\n * @private\n * @name get\n * @memberOf MapCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function mapCacheGet(key) {\n return getMapData(this, key).get(key);\n }\n\n /**\n * Checks if a map value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf MapCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function mapCacheHas(key) {\n return getMapData(this, key).has(key);\n }\n\n /**\n * Sets the map `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf MapCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the map cache instance.\n */\n function mapCacheSet(key, value) {\n var data = getMapData(this, key),\n size = data.size;\n\n data.set(key, value);\n this.size += data.size == size ? 0 : 1;\n return this;\n }\n\n // Add methods to `MapCache`.\n MapCache.prototype.clear = mapCacheClear;\n MapCache.prototype['delete'] = mapCacheDelete;\n MapCache.prototype.get = mapCacheGet;\n MapCache.prototype.has = mapCacheHas;\n MapCache.prototype.set = mapCacheSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n *\n * Creates an array cache object to store unique values.\n *\n * @private\n * @constructor\n * @param {Array} [values] The values to cache.\n */\n function SetCache(values) {\n var index = -1,\n length = values == null ? 0 : values.length;\n\n this.__data__ = new MapCache;\n while (++index < length) {\n this.add(values[index]);\n }\n }\n\n /**\n * Adds `value` to the array cache.\n *\n * @private\n * @name add\n * @memberOf SetCache\n * @alias push\n * @param {*} value The value to cache.\n * @returns {Object} Returns the cache instance.\n */\n function setCacheAdd(value) {\n this.__data__.set(value, HASH_UNDEFINED);\n return this;\n }\n\n /**\n * Checks if `value` is in the array cache.\n *\n * @private\n * @name has\n * @memberOf SetCache\n * @param {*} value The value to search for.\n * @returns {number} Returns `true` if `value` is found, else `false`.\n */\n function setCacheHas(value) {\n return this.__data__.has(value);\n }\n\n // Add methods to `SetCache`.\n SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\n SetCache.prototype.has = setCacheHas;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a stack cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function Stack(entries) {\n var data = this.__data__ = new ListCache(entries);\n this.size = data.size;\n }\n\n /**\n * Removes all key-value entries from the stack.\n *\n * @private\n * @name clear\n * @memberOf Stack\n */\n function stackClear() {\n this.__data__ = new ListCache;\n this.size = 0;\n }\n\n /**\n * Removes `key` and its value from the stack.\n *\n * @private\n * @name delete\n * @memberOf Stack\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function stackDelete(key) {\n var data = this.__data__,\n result = data['delete'](key);\n\n this.size = data.size;\n return result;\n }\n\n /**\n * Gets the stack value for `key`.\n *\n * @private\n * @name get\n * @memberOf Stack\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function stackGet(key) {\n return this.__data__.get(key);\n }\n\n /**\n * Checks if a stack value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Stack\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function stackHas(key) {\n return this.__data__.has(key);\n }\n\n /**\n * Sets the stack `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Stack\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the stack cache instance.\n */\n function stackSet(key, value) {\n var data = this.__data__;\n if (data instanceof ListCache) {\n var pairs = data.__data__;\n if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {\n pairs.push([key, value]);\n this.size = ++data.size;\n return this;\n }\n data = this.__data__ = new MapCache(pairs);\n }\n data.set(key, value);\n this.size = data.size;\n return this;\n }\n\n // Add methods to `Stack`.\n Stack.prototype.clear = stackClear;\n Stack.prototype['delete'] = stackDelete;\n Stack.prototype.get = stackGet;\n Stack.prototype.has = stackHas;\n Stack.prototype.set = stackSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an array of the enumerable property names of the array-like `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @param {boolean} inherited Specify returning inherited property names.\n * @returns {Array} Returns the array of property names.\n */\n function arrayLikeKeys(value, inherited) {\n var isArr = isArray(value),\n isArg = !isArr && isArguments(value),\n isBuff = !isArr && !isArg && isBuffer(value),\n isType = !isArr && !isArg && !isBuff && isTypedArray(value),\n skipIndexes = isArr || isArg || isBuff || isType,\n result = skipIndexes ? baseTimes(value.length, String) : [],\n length = result.length;\n\n for (var key in value) {\n if ((inherited || hasOwnProperty.call(value, key)) &&\n !(skipIndexes && (\n // Safari 9 has enumerable `arguments.length` in strict mode.\n key == 'length' ||\n // Node.js 0.10 has enumerable non-index properties on buffers.\n (isBuff && (key == 'offset' || key == 'parent')) ||\n // PhantomJS 2 has enumerable non-index properties on typed arrays.\n (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||\n // Skip index properties.\n isIndex(key, length)\n ))) {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * A specialized version of `_.sample` for arrays.\n *\n * @private\n * @param {Array} array The array to sample.\n * @returns {*} Returns the random element.\n */\n function arraySample(array) {\n var length = array.length;\n return length ? array[baseRandom(0, length - 1)] : undefined;\n }\n\n /**\n * A specialized version of `_.sampleSize` for arrays.\n *\n * @private\n * @param {Array} array The array to sample.\n * @param {number} n The number of elements to sample.\n * @returns {Array} Returns the random elements.\n */\n function arraySampleSize(array, n) {\n return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));\n }\n\n /**\n * A specialized version of `_.shuffle` for arrays.\n *\n * @private\n * @param {Array} array The array to shuffle.\n * @returns {Array} Returns the new shuffled array.\n */\n function arrayShuffle(array) {\n return shuffleSelf(copyArray(array));\n }\n\n /**\n * This function is like `assignValue` except that it doesn't assign\n * `undefined` values.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n function assignMergeValue(object, key, value) {\n if ((value !== undefined && !eq(object[key], value)) ||\n (value === undefined && !(key in object))) {\n baseAssignValue(object, key, value);\n }\n }\n\n /**\n * Assigns `value` to `key` of `object` if the existing value is not equivalent\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n function assignValue(object, key, value) {\n var objValue = object[key];\n if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||\n (value === undefined && !(key in object))) {\n baseAssignValue(object, key, value);\n }\n }\n\n /**\n * Gets the index at which the `key` is found in `array` of key-value pairs.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} key The key to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function assocIndexOf(array, key) {\n var length = array.length;\n while (length--) {\n if (eq(array[length][0], key)) {\n return length;\n }\n }\n return -1;\n }\n\n /**\n * Aggregates elements of `collection` on `accumulator` with keys transformed\n * by `iteratee` and values set by `setter`.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform keys.\n * @param {Object} accumulator The initial aggregated object.\n * @returns {Function} Returns `accumulator`.\n */\n function baseAggregator(collection, setter, iteratee, accumulator) {\n baseEach(collection, function(value, key, collection) {\n setter(accumulator, value, iteratee(value), collection);\n });\n return accumulator;\n }\n\n /**\n * The base implementation of `_.assign` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\n function baseAssign(object, source) {\n return object && copyObject(source, keys(source), object);\n }\n\n /**\n * The base implementation of `_.assignIn` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\n function baseAssignIn(object, source) {\n return object && copyObject(source, keysIn(source), object);\n }\n\n /**\n * The base implementation of `assignValue` and `assignMergeValue` without\n * value checks.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n function baseAssignValue(object, key, value) {\n if (key == '__proto__' && defineProperty) {\n defineProperty(object, key, {\n 'configurable': true,\n 'enumerable': true,\n 'value': value,\n 'writable': true\n });\n } else {\n object[key] = value;\n }\n }\n\n /**\n * The base implementation of `_.at` without support for individual paths.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {string[]} paths The property paths to pick.\n * @returns {Array} Returns the picked elements.\n */\n function baseAt(object, paths) {\n var index = -1,\n length = paths.length,\n result = Array(length),\n skip = object == null;\n\n while (++index < length) {\n result[index] = skip ? undefined : get(object, paths[index]);\n }\n return result;\n }\n\n /**\n * The base implementation of `_.clamp` which doesn't coerce arguments.\n *\n * @private\n * @param {number} number The number to clamp.\n * @param {number} [lower] The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the clamped number.\n */\n function baseClamp(number, lower, upper) {\n if (number === number) {\n if (upper !== undefined) {\n number = number <= upper ? number : upper;\n }\n if (lower !== undefined) {\n number = number >= lower ? number : lower;\n }\n }\n return number;\n }\n\n /**\n * The base implementation of `_.clone` and `_.cloneDeep` which tracks\n * traversed objects.\n *\n * @private\n * @param {*} value The value to clone.\n * @param {boolean} bitmask The bitmask flags.\n * 1 - Deep clone\n * 2 - Flatten inherited properties\n * 4 - Clone symbols\n * @param {Function} [customizer] The function to customize cloning.\n * @param {string} [key] The key of `value`.\n * @param {Object} [object] The parent object of `value`.\n * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\n * @returns {*} Returns the cloned value.\n */\n function baseClone(value, bitmask, customizer, key, object, stack) {\n var result,\n isDeep = bitmask & CLONE_DEEP_FLAG,\n isFlat = bitmask & CLONE_FLAT_FLAG,\n isFull = bitmask & CLONE_SYMBOLS_FLAG;\n\n if (customizer) {\n result = object ? customizer(value, key, object, stack) : customizer(value);\n }\n if (result !== undefined) {\n return result;\n }\n if (!isObject(value)) {\n return value;\n }\n var isArr = isArray(value);\n if (isArr) {\n result = initCloneArray(value);\n if (!isDeep) {\n return copyArray(value, result);\n }\n } else {\n var tag = getTag(value),\n isFunc = tag == funcTag || tag == genTag;\n\n if (isBuffer(value)) {\n return cloneBuffer(value, isDeep);\n }\n if (tag == objectTag || tag == argsTag || (isFunc && !object)) {\n result = (isFlat || isFunc) ? {} : initCloneObject(value);\n if (!isDeep) {\n return isFlat\n ? copySymbolsIn(value, baseAssignIn(result, value))\n : copySymbols(value, baseAssign(result, value));\n }\n } else {\n if (!cloneableTags[tag]) {\n return object ? value : {};\n }\n result = initCloneByTag(value, tag, isDeep);\n }\n }\n // Check for circular references and return its corresponding clone.\n stack || (stack = new Stack);\n var stacked = stack.get(value);\n if (stacked) {\n return stacked;\n }\n stack.set(value, result);\n\n if (isSet(value)) {\n value.forEach(function(subValue) {\n result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));\n });\n } else if (isMap(value)) {\n value.forEach(function(subValue, key) {\n result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));\n });\n }\n\n var keysFunc = isFull\n ? (isFlat ? getAllKeysIn : getAllKeys)\n : (isFlat ? keysIn : keys);\n\n var props = isArr ? undefined : keysFunc(value);\n arrayEach(props || value, function(subValue, key) {\n if (props) {\n key = subValue;\n subValue = value[key];\n }\n // Recursively populate clone (susceptible to call stack limits).\n assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));\n });\n return result;\n }\n\n /**\n * The base implementation of `_.conforms` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property predicates to conform to.\n * @returns {Function} Returns the new spec function.\n */\n function baseConforms(source) {\n var props = keys(source);\n return function(object) {\n return baseConformsTo(object, source, props);\n };\n }\n\n /**\n * The base implementation of `_.conformsTo` which accepts `props` to check.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property predicates to conform to.\n * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n */\n function baseConformsTo(object, source, props) {\n var length = props.length;\n if (object == null) {\n return !length;\n }\n object = Object(object);\n while (length--) {\n var key = props[length],\n predicate = source[key],\n value = object[key];\n\n if ((value === undefined && !(key in object)) || !predicate(value)) {\n return false;\n }\n }\n return true;\n }\n\n /**\n * The base implementation of `_.delay` and `_.defer` which accepts `args`\n * to provide to `func`.\n *\n * @private\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @param {Array} args The arguments to provide to `func`.\n * @returns {number|Object} Returns the timer id or timeout object.\n */\n function baseDelay(func, wait, args) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n return setTimeout(function() { func.apply(undefined, args); }, wait);\n }\n\n /**\n * The base implementation of methods like `_.difference` without support\n * for excluding multiple arrays or iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Array} values The values to exclude.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n */\n function baseDifference(array, values, iteratee, comparator) {\n var index = -1,\n includes = arrayIncludes,\n isCommon = true,\n length = array.length,\n result = [],\n valuesLength = values.length;\n\n if (!length) {\n return result;\n }\n if (iteratee) {\n values = arrayMap(values, baseUnary(iteratee));\n }\n if (comparator) {\n includes = arrayIncludesWith;\n isCommon = false;\n }\n else if (values.length >= LARGE_ARRAY_SIZE) {\n includes = cacheHas;\n isCommon = false;\n values = new SetCache(values);\n }\n outer:\n while (++index < length) {\n var value = array[index],\n computed = iteratee == null ? value : iteratee(value);\n\n value = (comparator || value !== 0) ? value : 0;\n if (isCommon && computed === computed) {\n var valuesIndex = valuesLength;\n while (valuesIndex--) {\n if (values[valuesIndex] === computed) {\n continue outer;\n }\n }\n result.push(value);\n }\n else if (!includes(values, computed, comparator)) {\n result.push(value);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.forEach` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n */\n var baseEach = createBaseEach(baseForOwn);\n\n /**\n * The base implementation of `_.forEachRight` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n */\n var baseEachRight = createBaseEach(baseForOwnRight, true);\n\n /**\n * The base implementation of `_.every` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`\n */\n function baseEvery(collection, predicate) {\n var result = true;\n baseEach(collection, function(value, index, collection) {\n result = !!predicate(value, index, collection);\n return result;\n });\n return result;\n }\n\n /**\n * The base implementation of methods like `_.max` and `_.min` which accepts a\n * `comparator` to determine the extremum value.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The iteratee invoked per iteration.\n * @param {Function} comparator The comparator used to compare values.\n * @returns {*} Returns the extremum value.\n */\n function baseExtremum(array, iteratee, comparator) {\n var index = -1,\n length = array.length;\n\n while (++index < length) {\n var value = array[index],\n current = iteratee(value);\n\n if (current != null && (computed === undefined\n ? (current === current && !isSymbol(current))\n : comparator(current, computed)\n )) {\n var computed = current,\n result = value;\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.fill` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n */\n function baseFill(array, value, start, end) {\n var length = array.length;\n\n start = toInteger(start);\n if (start < 0) {\n start = -start > length ? 0 : (length + start);\n }\n end = (end === undefined || end > length) ? length : toInteger(end);\n if (end < 0) {\n end += length;\n }\n end = start > end ? 0 : toLength(end);\n while (start < end) {\n array[start++] = value;\n }\n return array;\n }\n\n /**\n * The base implementation of `_.filter` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\n function baseFilter(collection, predicate) {\n var result = [];\n baseEach(collection, function(value, index, collection) {\n if (predicate(value, index, collection)) {\n result.push(value);\n }\n });\n return result;\n }\n\n /**\n * The base implementation of `_.flatten` with support for restricting flattening.\n *\n * @private\n * @param {Array} array The array to flatten.\n * @param {number} depth The maximum recursion depth.\n * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.\n * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.\n * @param {Array} [result=[]] The initial result value.\n * @returns {Array} Returns the new flattened array.\n */\n function baseFlatten(array, depth, predicate, isStrict, result) {\n var index = -1,\n length = array.length;\n\n predicate || (predicate = isFlattenable);\n result || (result = []);\n\n while (++index < length) {\n var value = array[index];\n if (depth > 0 && predicate(value)) {\n if (depth > 1) {\n // Recursively flatten arrays (susceptible to call stack limits).\n baseFlatten(value, depth - 1, predicate, isStrict, result);\n } else {\n arrayPush(result, value);\n }\n } else if (!isStrict) {\n result[result.length] = value;\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `baseForOwn` which iterates over `object`\n * properties returned by `keysFunc` and invokes `iteratee` for each property.\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @returns {Object} Returns `object`.\n */\n var baseFor = createBaseFor();\n\n /**\n * This function is like `baseFor` except that it iterates over properties\n * in the opposite order.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @returns {Object} Returns `object`.\n */\n var baseForRight = createBaseFor(true);\n\n /**\n * The base implementation of `_.forOwn` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Object} Returns `object`.\n */\n function baseForOwn(object, iteratee) {\n return object && baseFor(object, iteratee, keys);\n }\n\n /**\n * The base implementation of `_.forOwnRight` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Object} Returns `object`.\n */\n function baseForOwnRight(object, iteratee) {\n return object && baseForRight(object, iteratee, keys);\n }\n\n /**\n * The base implementation of `_.functions` which creates an array of\n * `object` function property names filtered from `props`.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Array} props The property names to filter.\n * @returns {Array} Returns the function names.\n */\n function baseFunctions(object, props) {\n return arrayFilter(props, function(key) {\n return isFunction(object[key]);\n });\n }\n\n /**\n * The base implementation of `_.get` without support for default values.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @returns {*} Returns the resolved value.\n */\n function baseGet(object, path) {\n path = castPath(path, object);\n\n var index = 0,\n length = path.length;\n\n while (object != null && index < length) {\n object = object[toKey(path[index++])];\n }\n return (index && index == length) ? object : undefined;\n }\n\n /**\n * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @param {Function} symbolsFunc The function to get the symbols of `object`.\n * @returns {Array} Returns the array of property names and symbols.\n */\n function baseGetAllKeys(object, keysFunc, symbolsFunc) {\n var result = keysFunc(object);\n return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n }\n\n /**\n * The base implementation of `getTag` without fallbacks for buggy environments.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\n function baseGetTag(value) {\n if (value == null) {\n return value === undefined ? undefinedTag : nullTag;\n }\n return (symToStringTag && symToStringTag in Object(value))\n ? getRawTag(value)\n : objectToString(value);\n }\n\n /**\n * The base implementation of `_.gt` which doesn't coerce arguments.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is greater than `other`,\n * else `false`.\n */\n function baseGt(value, other) {\n return value > other;\n }\n\n /**\n * The base implementation of `_.has` without support for deep paths.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\n function baseHas(object, key) {\n return object != null && hasOwnProperty.call(object, key);\n }\n\n /**\n * The base implementation of `_.hasIn` without support for deep paths.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\n function baseHasIn(object, key) {\n return object != null && key in Object(object);\n }\n\n /**\n * The base implementation of `_.inRange` which doesn't coerce arguments.\n *\n * @private\n * @param {number} number The number to check.\n * @param {number} start The start of the range.\n * @param {number} end The end of the range.\n * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n */\n function baseInRange(number, start, end) {\n return number >= nativeMin(start, end) && number < nativeMax(start, end);\n }\n\n /**\n * The base implementation of methods like `_.intersection`, without support\n * for iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of shared values.\n */\n function baseIntersection(arrays, iteratee, comparator) {\n var includes = comparator ? arrayIncludesWith : arrayIncludes,\n length = arrays[0].length,\n othLength = arrays.length,\n othIndex = othLength,\n caches = Array(othLength),\n maxLength = Infinity,\n result = [];\n\n while (othIndex--) {\n var array = arrays[othIndex];\n if (othIndex && iteratee) {\n array = arrayMap(array, baseUnary(iteratee));\n }\n maxLength = nativeMin(array.length, maxLength);\n caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))\n ? new SetCache(othIndex && array)\n : undefined;\n }\n array = arrays[0];\n\n var index = -1,\n seen = caches[0];\n\n outer:\n while (++index < length && result.length < maxLength) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n\n value = (comparator || value !== 0) ? value : 0;\n if (!(seen\n ? cacheHas(seen, computed)\n : includes(result, computed, comparator)\n )) {\n othIndex = othLength;\n while (--othIndex) {\n var cache = caches[othIndex];\n if (!(cache\n ? cacheHas(cache, computed)\n : includes(arrays[othIndex], computed, comparator))\n ) {\n continue outer;\n }\n }\n if (seen) {\n seen.push(computed);\n }\n result.push(value);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.invert` and `_.invertBy` which inverts\n * `object` with values transformed by `iteratee` and set by `setter`.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform values.\n * @param {Object} accumulator The initial inverted object.\n * @returns {Function} Returns `accumulator`.\n */\n function baseInverter(object, setter, iteratee, accumulator) {\n baseForOwn(object, function(value, key, object) {\n setter(accumulator, iteratee(value), key, object);\n });\n return accumulator;\n }\n\n /**\n * The base implementation of `_.invoke` without support for individual\n * method arguments.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the method to invoke.\n * @param {Array} args The arguments to invoke the method with.\n * @returns {*} Returns the result of the invoked method.\n */\n function baseInvoke(object, path, args) {\n path = castPath(path, object);\n object = parent(object, path);\n var func = object == null ? object : object[toKey(last(path))];\n return func == null ? undefined : apply(func, object, args);\n }\n\n /**\n * The base implementation of `_.isArguments`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n */\n function baseIsArguments(value) {\n return isObjectLike(value) && baseGetTag(value) == argsTag;\n }\n\n /**\n * The base implementation of `_.isArrayBuffer` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n */\n function baseIsArrayBuffer(value) {\n return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;\n }\n\n /**\n * The base implementation of `_.isDate` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n */\n function baseIsDate(value) {\n return isObjectLike(value) && baseGetTag(value) == dateTag;\n }\n\n /**\n * The base implementation of `_.isEqual` which supports partial comparisons\n * and tracks traversed objects.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {boolean} bitmask The bitmask flags.\n * 1 - Unordered comparison\n * 2 - Partial comparison\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n */\n function baseIsEqual(value, other, bitmask, customizer, stack) {\n if (value === other) {\n return true;\n }\n if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {\n return value !== value && other !== other;\n }\n return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);\n }\n\n /**\n * A specialized version of `baseIsEqual` for arrays and objects which performs\n * deep comparisons and tracks traversed objects enabling objects with circular\n * references to be compared.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {\n var objIsArr = isArray(object),\n othIsArr = isArray(other),\n objTag = objIsArr ? arrayTag : getTag(object),\n othTag = othIsArr ? arrayTag : getTag(other);\n\n objTag = objTag == argsTag ? objectTag : objTag;\n othTag = othTag == argsTag ? objectTag : othTag;\n\n var objIsObj = objTag == objectTag,\n othIsObj = othTag == objectTag,\n isSameTag = objTag == othTag;\n\n if (isSameTag && isBuffer(object)) {\n if (!isBuffer(other)) {\n return false;\n }\n objIsArr = true;\n objIsObj = false;\n }\n if (isSameTag && !objIsObj) {\n stack || (stack = new Stack);\n return (objIsArr || isTypedArray(object))\n ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)\n : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);\n }\n if (!(bitmask & COMPARE_PARTIAL_FLAG)) {\n var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n if (objIsWrapped || othIsWrapped) {\n var objUnwrapped = objIsWrapped ? object.value() : object,\n othUnwrapped = othIsWrapped ? other.value() : other;\n\n stack || (stack = new Stack);\n return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);\n }\n }\n if (!isSameTag) {\n return false;\n }\n stack || (stack = new Stack);\n return equalObjects(object, other, bitmask, customizer, equalFunc, stack);\n }\n\n /**\n * The base implementation of `_.isMap` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n */\n function baseIsMap(value) {\n return isObjectLike(value) && getTag(value) == mapTag;\n }\n\n /**\n * The base implementation of `_.isMatch` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Array} matchData The property names, values, and compare flags to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n */\n function baseIsMatch(object, source, matchData, customizer) {\n var index = matchData.length,\n length = index,\n noCustomizer = !customizer;\n\n if (object == null) {\n return !length;\n }\n object = Object(object);\n while (index--) {\n var data = matchData[index];\n if ((noCustomizer && data[2])\n ? data[1] !== object[data[0]]\n : !(data[0] in object)\n ) {\n return false;\n }\n }\n while (++index < length) {\n data = matchData[index];\n var key = data[0],\n objValue = object[key],\n srcValue = data[1];\n\n if (noCustomizer && data[2]) {\n if (objValue === undefined && !(key in object)) {\n return false;\n }\n } else {\n var stack = new Stack;\n if (customizer) {\n var result = customizer(objValue, srcValue, key, object, source, stack);\n }\n if (!(result === undefined\n ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)\n : result\n )) {\n return false;\n }\n }\n }\n return true;\n }\n\n /**\n * The base implementation of `_.isNative` without bad shim checks.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n * else `false`.\n */\n function baseIsNative(value) {\n if (!isObject(value) || isMasked(value)) {\n return false;\n }\n var pattern = isFunction(value) ? reIsNative : reIsHostCtor;\n return pattern.test(toSource(value));\n }\n\n /**\n * The base implementation of `_.isRegExp` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n */\n function baseIsRegExp(value) {\n return isObjectLike(value) && baseGetTag(value) == regexpTag;\n }\n\n /**\n * The base implementation of `_.isSet` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n */\n function baseIsSet(value) {\n return isObjectLike(value) && getTag(value) == setTag;\n }\n\n /**\n * The base implementation of `_.isTypedArray` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n */\n function baseIsTypedArray(value) {\n return isObjectLike(value) &&\n isLength(value.length) && !!typedArrayTags[baseGetTag(value)];\n }\n\n /**\n * The base implementation of `_.iteratee`.\n *\n * @private\n * @param {*} [value=_.identity] The value to convert to an iteratee.\n * @returns {Function} Returns the iteratee.\n */\n function baseIteratee(value) {\n // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\n // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\n if (typeof value == 'function') {\n return value;\n }\n if (value == null) {\n return identity;\n }\n if (typeof value == 'object') {\n return isArray(value)\n ? baseMatchesProperty(value[0], value[1])\n : baseMatches(value);\n }\n return property(value);\n }\n\n /**\n * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n function baseKeys(object) {\n if (!isPrototype(object)) {\n return nativeKeys(object);\n }\n var result = [];\n for (var key in Object(object)) {\n if (hasOwnProperty.call(object, key) && key != 'constructor') {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n function baseKeysIn(object) {\n if (!isObject(object)) {\n return nativeKeysIn(object);\n }\n var isProto = isPrototype(object),\n result = [];\n\n for (var key in object) {\n if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.lt` which doesn't coerce arguments.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is less than `other`,\n * else `false`.\n */\n function baseLt(value, other) {\n return value < other;\n }\n\n /**\n * The base implementation of `_.map` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\n function baseMap(collection, iteratee) {\n var index = -1,\n result = isArrayLike(collection) ? Array(collection.length) : [];\n\n baseEach(collection, function(value, key, collection) {\n result[++index] = iteratee(value, key, collection);\n });\n return result;\n }\n\n /**\n * The base implementation of `_.matches` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property values to match.\n * @returns {Function} Returns the new spec function.\n */\n function baseMatches(source) {\n var matchData = getMatchData(source);\n if (matchData.length == 1 && matchData[0][2]) {\n return matchesStrictComparable(matchData[0][0], matchData[0][1]);\n }\n return function(object) {\n return object === source || baseIsMatch(object, source, matchData);\n };\n }\n\n /**\n * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\n *\n * @private\n * @param {string} path The path of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\n function baseMatchesProperty(path, srcValue) {\n if (isKey(path) && isStrictComparable(srcValue)) {\n return matchesStrictComparable(toKey(path), srcValue);\n }\n return function(object) {\n var objValue = get(object, path);\n return (objValue === undefined && objValue === srcValue)\n ? hasIn(object, path)\n : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);\n };\n }\n\n /**\n * The base implementation of `_.merge` without support for multiple sources.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @param {number} srcIndex The index of `source`.\n * @param {Function} [customizer] The function to customize merged values.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n */\n function baseMerge(object, source, srcIndex, customizer, stack) {\n if (object === source) {\n return;\n }\n baseFor(source, function(srcValue, key) {\n stack || (stack = new Stack);\n if (isObject(srcValue)) {\n baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);\n }\n else {\n var newValue = customizer\n ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)\n : undefined;\n\n if (newValue === undefined) {\n newValue = srcValue;\n }\n assignMergeValue(object, key, newValue);\n }\n }, keysIn);\n }\n\n /**\n * A specialized version of `baseMerge` for arrays and objects which performs\n * deep merges and tracks traversed objects enabling objects with circular\n * references to be merged.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @param {string} key The key of the value to merge.\n * @param {number} srcIndex The index of `source`.\n * @param {Function} mergeFunc The function to merge values.\n * @param {Function} [customizer] The function to customize assigned values.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n */\n function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {\n var objValue = safeGet(object, key),\n srcValue = safeGet(source, key),\n stacked = stack.get(srcValue);\n\n if (stacked) {\n assignMergeValue(object, key, stacked);\n return;\n }\n var newValue = customizer\n ? customizer(objValue, srcValue, (key + ''), object, source, stack)\n : undefined;\n\n var isCommon = newValue === undefined;\n\n if (isCommon) {\n var isArr = isArray(srcValue),\n isBuff = !isArr && isBuffer(srcValue),\n isTyped = !isArr && !isBuff && isTypedArray(srcValue);\n\n newValue = srcValue;\n if (isArr || isBuff || isTyped) {\n if (isArray(objValue)) {\n newValue = objValue;\n }\n else if (isArrayLikeObject(objValue)) {\n newValue = copyArray(objValue);\n }\n else if (isBuff) {\n isCommon = false;\n newValue = cloneBuffer(srcValue, true);\n }\n else if (isTyped) {\n isCommon = false;\n newValue = cloneTypedArray(srcValue, true);\n }\n else {\n newValue = [];\n }\n }\n else if (isPlainObject(srcValue) || isArguments(srcValue)) {\n newValue = objValue;\n if (isArguments(objValue)) {\n newValue = toPlainObject(objValue);\n }\n else if (!isObject(objValue) || isFunction(objValue)) {\n newValue = initCloneObject(srcValue);\n }\n }\n else {\n isCommon = false;\n }\n }\n if (isCommon) {\n // Recursively merge objects and arrays (susceptible to call stack limits).\n stack.set(srcValue, newValue);\n mergeFunc(newValue, srcValue, srcIndex, customizer, stack);\n stack['delete'](srcValue);\n }\n assignMergeValue(object, key, newValue);\n }\n\n /**\n * The base implementation of `_.nth` which doesn't coerce arguments.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {number} n The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n */\n function baseNth(array, n) {\n var length = array.length;\n if (!length) {\n return;\n }\n n += n < 0 ? length : 0;\n return isIndex(n, length) ? array[n] : undefined;\n }\n\n /**\n * The base implementation of `_.orderBy` without param guards.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.\n * @param {string[]} orders The sort orders of `iteratees`.\n * @returns {Array} Returns the new sorted array.\n */\n function baseOrderBy(collection, iteratees, orders) {\n if (iteratees.length) {\n iteratees = arrayMap(iteratees, function(iteratee) {\n if (isArray(iteratee)) {\n return function(value) {\n return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);\n }\n }\n return iteratee;\n });\n } else {\n iteratees = [identity];\n }\n\n var index = -1;\n iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n\n var result = baseMap(collection, function(value, key, collection) {\n var criteria = arrayMap(iteratees, function(iteratee) {\n return iteratee(value);\n });\n return { 'criteria': criteria, 'index': ++index, 'value': value };\n });\n\n return baseSortBy(result, function(object, other) {\n return compareMultiple(object, other, orders);\n });\n }\n\n /**\n * The base implementation of `_.pick` without support for individual\n * property identifiers.\n *\n * @private\n * @param {Object} object The source object.\n * @param {string[]} paths The property paths to pick.\n * @returns {Object} Returns the new object.\n */\n function basePick(object, paths) {\n return basePickBy(object, paths, function(value, path) {\n return hasIn(object, path);\n });\n }\n\n /**\n * The base implementation of `_.pickBy` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The source object.\n * @param {string[]} paths The property paths to pick.\n * @param {Function} predicate The function invoked per property.\n * @returns {Object} Returns the new object.\n */\n function basePickBy(object, paths, predicate) {\n var index = -1,\n length = paths.length,\n result = {};\n\n while (++index < length) {\n var path = paths[index],\n value = baseGet(object, path);\n\n if (predicate(value, path)) {\n baseSet(result, castPath(path, object), value);\n }\n }\n return result;\n }\n\n /**\n * A specialized version of `baseProperty` which supports deep paths.\n *\n * @private\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\n function basePropertyDeep(path) {\n return function(object) {\n return baseGet(object, path);\n };\n }\n\n /**\n * The base implementation of `_.pullAllBy` without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n */\n function basePullAll(array, values, iteratee, comparator) {\n var indexOf = comparator ? baseIndexOfWith : baseIndexOf,\n index = -1,\n length = values.length,\n seen = array;\n\n if (array === values) {\n values = copyArray(values);\n }\n if (iteratee) {\n seen = arrayMap(array, baseUnary(iteratee));\n }\n while (++index < length) {\n var fromIndex = 0,\n value = values[index],\n computed = iteratee ? iteratee(value) : value;\n\n while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {\n if (seen !== array) {\n splice.call(seen, fromIndex, 1);\n }\n splice.call(array, fromIndex, 1);\n }\n }\n return array;\n }\n\n /**\n * The base implementation of `_.pullAt` without support for individual\n * indexes or capturing the removed elements.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {number[]} indexes The indexes of elements to remove.\n * @returns {Array} Returns `array`.\n */\n function basePullAt(array, indexes) {\n var length = array ? indexes.length : 0,\n lastIndex = length - 1;\n\n while (length--) {\n var index = indexes[length];\n if (length == lastIndex || index !== previous) {\n var previous = index;\n if (isIndex(index)) {\n splice.call(array, index, 1);\n } else {\n baseUnset(array, index);\n }\n }\n }\n return array;\n }\n\n /**\n * The base implementation of `_.random` without support for returning\n * floating-point numbers.\n *\n * @private\n * @param {number} lower The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the random number.\n */\n function baseRandom(lower, upper) {\n return lower + nativeFloor(nativeRandom() * (upper - lower + 1));\n }\n\n /**\n * The base implementation of `_.range` and `_.rangeRight` which doesn't\n * coerce arguments.\n *\n * @private\n * @param {number} start The start of the range.\n * @param {number} end The end of the range.\n * @param {number} step The value to increment or decrement by.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Array} Returns the range of numbers.\n */\n function baseRange(start, end, step, fromRight) {\n var index = -1,\n length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),\n result = Array(length);\n\n while (length--) {\n result[fromRight ? length : ++index] = start;\n start += step;\n }\n return result;\n }\n\n /**\n * The base implementation of `_.repeat` which doesn't coerce arguments.\n *\n * @private\n * @param {string} string The string to repeat.\n * @param {number} n The number of times to repeat the string.\n * @returns {string} Returns the repeated string.\n */\n function baseRepeat(string, n) {\n var result = '';\n if (!string || n < 1 || n > MAX_SAFE_INTEGER) {\n return result;\n }\n // Leverage the exponentiation by squaring algorithm for a faster repeat.\n // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.\n do {\n if (n % 2) {\n result += string;\n }\n n = nativeFloor(n / 2);\n if (n) {\n string += string;\n }\n } while (n);\n\n return result;\n }\n\n /**\n * The base implementation of `_.rest` which doesn't validate or coerce arguments.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @returns {Function} Returns the new function.\n */\n function baseRest(func, start) {\n return setToString(overRest(func, start, identity), func + '');\n }\n\n /**\n * The base implementation of `_.sample`.\n *\n * @private\n * @param {Array|Object} collection The collection to sample.\n * @returns {*} Returns the random element.\n */\n function baseSample(collection) {\n return arraySample(values(collection));\n }\n\n /**\n * The base implementation of `_.sampleSize` without param guards.\n *\n * @private\n * @param {Array|Object} collection The collection to sample.\n * @param {number} n The number of elements to sample.\n * @returns {Array} Returns the random elements.\n */\n function baseSampleSize(collection, n) {\n var array = values(collection);\n return shuffleSelf(array, baseClamp(n, 0, array.length));\n }\n\n /**\n * The base implementation of `_.set`.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @param {Function} [customizer] The function to customize path creation.\n * @returns {Object} Returns `object`.\n */\n function baseSet(object, path, value, customizer) {\n if (!isObject(object)) {\n return object;\n }\n path = castPath(path, object);\n\n var index = -1,\n length = path.length,\n lastIndex = length - 1,\n nested = object;\n\n while (nested != null && ++index < length) {\n var key = toKey(path[index]),\n newValue = value;\n\n if (key === '__proto__' || key === 'constructor' || key === 'prototype') {\n return object;\n }\n\n if (index != lastIndex) {\n var objValue = nested[key];\n newValue = customizer ? customizer(objValue, key, nested) : undefined;\n if (newValue === undefined) {\n newValue = isObject(objValue)\n ? objValue\n : (isIndex(path[index + 1]) ? [] : {});\n }\n }\n assignValue(nested, key, newValue);\n nested = nested[key];\n }\n return object;\n }\n\n /**\n * The base implementation of `setData` without support for hot loop shorting.\n *\n * @private\n * @param {Function} func The function to associate metadata with.\n * @param {*} data The metadata.\n * @returns {Function} Returns `func`.\n */\n var baseSetData = !metaMap ? identity : function(func, data) {\n metaMap.set(func, data);\n return func;\n };\n\n /**\n * The base implementation of `setToString` without support for hot loop shorting.\n *\n * @private\n * @param {Function} func The function to modify.\n * @param {Function} string The `toString` result.\n * @returns {Function} Returns `func`.\n */\n var baseSetToString = !defineProperty ? identity : function(func, string) {\n return defineProperty(func, 'toString', {\n 'configurable': true,\n 'enumerable': false,\n 'value': constant(string),\n 'writable': true\n });\n };\n\n /**\n * The base implementation of `_.shuffle`.\n *\n * @private\n * @param {Array|Object} collection The collection to shuffle.\n * @returns {Array} Returns the new shuffled array.\n */\n function baseShuffle(collection) {\n return shuffleSelf(values(collection));\n }\n\n /**\n * The base implementation of `_.slice` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\n function baseSlice(array, start, end) {\n var index = -1,\n length = array.length;\n\n if (start < 0) {\n start = -start > length ? 0 : (length + start);\n }\n end = end > length ? length : end;\n if (end < 0) {\n end += length;\n }\n length = start > end ? 0 : ((end - start) >>> 0);\n start >>>= 0;\n\n var result = Array(length);\n while (++index < length) {\n result[index] = array[index + start];\n }\n return result;\n }\n\n /**\n * The base implementation of `_.some` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n */\n function baseSome(collection, predicate) {\n var result;\n\n baseEach(collection, function(value, index, collection) {\n result = predicate(value, index, collection);\n return !result;\n });\n return !!result;\n }\n\n /**\n * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which\n * performs a binary search of `array` to determine the index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n */\n function baseSortedIndex(array, value, retHighest) {\n var low = 0,\n high = array == null ? low : array.length;\n\n if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {\n while (low < high) {\n var mid = (low + high) >>> 1,\n computed = array[mid];\n\n if (computed !== null && !isSymbol(computed) &&\n (retHighest ? (computed <= value) : (computed < value))) {\n low = mid + 1;\n } else {\n high = mid;\n }\n }\n return high;\n }\n return baseSortedIndexBy(array, value, identity, retHighest);\n }\n\n /**\n * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`\n * which invokes `iteratee` for `value` and each element of `array` to compute\n * their sort ranking. The iteratee is invoked with one argument; (value).\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} iteratee The iteratee invoked per element.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n */\n function baseSortedIndexBy(array, value, iteratee, retHighest) {\n var low = 0,\n high = array == null ? 0 : array.length;\n if (high === 0) {\n return 0;\n }\n\n value = iteratee(value);\n var valIsNaN = value !== value,\n valIsNull = value === null,\n valIsSymbol = isSymbol(value),\n valIsUndefined = value === undefined;\n\n while (low < high) {\n var mid = nativeFloor((low + high) / 2),\n computed = iteratee(array[mid]),\n othIsDefined = computed !== undefined,\n othIsNull = computed === null,\n othIsReflexive = computed === computed,\n othIsSymbol = isSymbol(computed);\n\n if (valIsNaN) {\n var setLow = retHighest || othIsReflexive;\n } else if (valIsUndefined) {\n setLow = othIsReflexive && (retHighest || othIsDefined);\n } else if (valIsNull) {\n setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);\n } else if (valIsSymbol) {\n setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);\n } else if (othIsNull || othIsSymbol) {\n setLow = false;\n } else {\n setLow = retHighest ? (computed <= value) : (computed < value);\n }\n if (setLow) {\n low = mid + 1;\n } else {\n high = mid;\n }\n }\n return nativeMin(high, MAX_ARRAY_INDEX);\n }\n\n /**\n * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\n function baseSortedUniq(array, iteratee) {\n var index = -1,\n length = array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n\n if (!index || !eq(computed, seen)) {\n var seen = computed;\n result[resIndex++] = value === 0 ? 0 : value;\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.toNumber` which doesn't ensure correct\n * conversions of binary, hexadecimal, or octal string values.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n */\n function baseToNumber(value) {\n if (typeof value == 'number') {\n return value;\n }\n if (isSymbol(value)) {\n return NAN;\n }\n return +value;\n }\n\n /**\n * The base implementation of `_.toString` which doesn't convert nullish\n * values to empty strings.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n */\n function baseToString(value) {\n // Exit early for strings to avoid a performance hit in some environments.\n if (typeof value == 'string') {\n return value;\n }\n if (isArray(value)) {\n // Recursively convert values (susceptible to call stack limits).\n return arrayMap(value, baseToString) + '';\n }\n if (isSymbol(value)) {\n return symbolToString ? symbolToString.call(value) : '';\n }\n var result = (value + '');\n return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n }\n\n /**\n * The base implementation of `_.uniqBy` without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\n function baseUniq(array, iteratee, comparator) {\n var index = -1,\n includes = arrayIncludes,\n length = array.length,\n isCommon = true,\n result = [],\n seen = result;\n\n if (comparator) {\n isCommon = false;\n includes = arrayIncludesWith;\n }\n else if (length >= LARGE_ARRAY_SIZE) {\n var set = iteratee ? null : createSet(array);\n if (set) {\n return setToArray(set);\n }\n isCommon = false;\n includes = cacheHas;\n seen = new SetCache;\n }\n else {\n seen = iteratee ? [] : result;\n }\n outer:\n while (++index < length) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n\n value = (comparator || value !== 0) ? value : 0;\n if (isCommon && computed === computed) {\n var seenIndex = seen.length;\n while (seenIndex--) {\n if (seen[seenIndex] === computed) {\n continue outer;\n }\n }\n if (iteratee) {\n seen.push(computed);\n }\n result.push(value);\n }\n else if (!includes(seen, computed, comparator)) {\n if (seen !== result) {\n seen.push(computed);\n }\n result.push(value);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.unset`.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {Array|string} path The property path to unset.\n * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n */\n function baseUnset(object, path) {\n path = castPath(path, object);\n object = parent(object, path);\n return object == null || delete object[toKey(last(path))];\n }\n\n /**\n * The base implementation of `_.update`.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to update.\n * @param {Function} updater The function to produce the updated value.\n * @param {Function} [customizer] The function to customize path creation.\n * @returns {Object} Returns `object`.\n */\n function baseUpdate(object, path, updater, customizer) {\n return baseSet(object, path, updater(baseGet(object, path)), customizer);\n }\n\n /**\n * The base implementation of methods like `_.dropWhile` and `_.takeWhile`\n * without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {Function} predicate The function invoked per iteration.\n * @param {boolean} [isDrop] Specify dropping elements instead of taking them.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Array} Returns the slice of `array`.\n */\n function baseWhile(array, predicate, isDrop, fromRight) {\n var length = array.length,\n index = fromRight ? length : -1;\n\n while ((fromRight ? index-- : ++index < length) &&\n predicate(array[index], index, array)) {}\n\n return isDrop\n ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))\n : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));\n }\n\n /**\n * The base implementation of `wrapperValue` which returns the result of\n * performing a sequence of actions on the unwrapped `value`, where each\n * successive action is supplied the return value of the previous.\n *\n * @private\n * @param {*} value The unwrapped value.\n * @param {Array} actions Actions to perform to resolve the unwrapped value.\n * @returns {*} Returns the resolved value.\n */\n function baseWrapperValue(value, actions) {\n var result = value;\n if (result instanceof LazyWrapper) {\n result = result.value();\n }\n return arrayReduce(actions, function(result, action) {\n return action.func.apply(action.thisArg, arrayPush([result], action.args));\n }, result);\n }\n\n /**\n * The base implementation of methods like `_.xor`, without support for\n * iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of values.\n */\n function baseXor(arrays, iteratee, comparator) {\n var length = arrays.length;\n if (length < 2) {\n return length ? baseUniq(arrays[0]) : [];\n }\n var index = -1,\n result = Array(length);\n\n while (++index < length) {\n var array = arrays[index],\n othIndex = -1;\n\n while (++othIndex < length) {\n if (othIndex != index) {\n result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);\n }\n }\n }\n return baseUniq(baseFlatten(result, 1), iteratee, comparator);\n }\n\n /**\n * This base implementation of `_.zipObject` which assigns values using `assignFunc`.\n *\n * @private\n * @param {Array} props The property identifiers.\n * @param {Array} values The property values.\n * @param {Function} assignFunc The function to assign values.\n * @returns {Object} Returns the new object.\n */\n function baseZipObject(props, values, assignFunc) {\n var index = -1,\n length = props.length,\n valsLength = values.length,\n result = {};\n\n while (++index < length) {\n var value = index < valsLength ? values[index] : undefined;\n assignFunc(result, props[index], value);\n }\n return result;\n }\n\n /**\n * Casts `value` to an empty array if it's not an array like object.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Array|Object} Returns the cast array-like object.\n */\n function castArrayLikeObject(value) {\n return isArrayLikeObject(value) ? value : [];\n }\n\n /**\n * Casts `value` to `identity` if it's not a function.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Function} Returns cast function.\n */\n function castFunction(value) {\n return typeof value == 'function' ? value : identity;\n }\n\n /**\n * Casts `value` to a path array if it's not one.\n *\n * @private\n * @param {*} value The value to inspect.\n * @param {Object} [object] The object to query keys on.\n * @returns {Array} Returns the cast property path array.\n */\n function castPath(value, object) {\n if (isArray(value)) {\n return value;\n }\n return isKey(value, object) ? [value] : stringToPath(toString(value));\n }\n\n /**\n * A `baseRest` alias which can be replaced with `identity` by module\n * replacement plugins.\n *\n * @private\n * @type {Function}\n * @param {Function} func The function to apply a rest parameter to.\n * @returns {Function} Returns the new function.\n */\n var castRest = baseRest;\n\n /**\n * Casts `array` to a slice if it's needed.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {number} start The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the cast slice.\n */\n function castSlice(array, start, end) {\n var length = array.length;\n end = end === undefined ? length : end;\n return (!start && end >= length) ? array : baseSlice(array, start, end);\n }\n\n /**\n * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).\n *\n * @private\n * @param {number|Object} id The timer id or timeout object of the timer to clear.\n */\n var clearTimeout = ctxClearTimeout || function(id) {\n return root.clearTimeout(id);\n };\n\n /**\n * Creates a clone of `buffer`.\n *\n * @private\n * @param {Buffer} buffer The buffer to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Buffer} Returns the cloned buffer.\n */\n function cloneBuffer(buffer, isDeep) {\n if (isDeep) {\n return buffer.slice();\n }\n var length = buffer.length,\n result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);\n\n buffer.copy(result);\n return result;\n }\n\n /**\n * Creates a clone of `arrayBuffer`.\n *\n * @private\n * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\n * @returns {ArrayBuffer} Returns the cloned array buffer.\n */\n function cloneArrayBuffer(arrayBuffer) {\n var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n new Uint8Array(result).set(new Uint8Array(arrayBuffer));\n return result;\n }\n\n /**\n * Creates a clone of `dataView`.\n *\n * @private\n * @param {Object} dataView The data view to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned data view.\n */\n function cloneDataView(dataView, isDeep) {\n var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\n return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n }\n\n /**\n * Creates a clone of `regexp`.\n *\n * @private\n * @param {Object} regexp The regexp to clone.\n * @returns {Object} Returns the cloned regexp.\n */\n function cloneRegExp(regexp) {\n var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n result.lastIndex = regexp.lastIndex;\n return result;\n }\n\n /**\n * Creates a clone of the `symbol` object.\n *\n * @private\n * @param {Object} symbol The symbol object to clone.\n * @returns {Object} Returns the cloned symbol object.\n */\n function cloneSymbol(symbol) {\n return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n }\n\n /**\n * Creates a clone of `typedArray`.\n *\n * @private\n * @param {Object} typedArray The typed array to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned typed array.\n */\n function cloneTypedArray(typedArray, isDeep) {\n var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\n return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n }\n\n /**\n * Compares values to sort them in ascending order.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {number} Returns the sort order indicator for `value`.\n */\n function compareAscending(value, other) {\n if (value !== other) {\n var valIsDefined = value !== undefined,\n valIsNull = value === null,\n valIsReflexive = value === value,\n valIsSymbol = isSymbol(value);\n\n var othIsDefined = other !== undefined,\n othIsNull = other === null,\n othIsReflexive = other === other,\n othIsSymbol = isSymbol(other);\n\n if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||\n (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||\n (valIsNull && othIsDefined && othIsReflexive) ||\n (!valIsDefined && othIsReflexive) ||\n !valIsReflexive) {\n return 1;\n }\n if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||\n (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||\n (othIsNull && valIsDefined && valIsReflexive) ||\n (!othIsDefined && valIsReflexive) ||\n !othIsReflexive) {\n return -1;\n }\n }\n return 0;\n }\n\n /**\n * Used by `_.orderBy` to compare multiple properties of a value to another\n * and stable sort them.\n *\n * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,\n * specify an order of \"desc\" for descending or \"asc\" for ascending sort order\n * of corresponding values.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {boolean[]|string[]} orders The order to sort by for each property.\n * @returns {number} Returns the sort order indicator for `object`.\n */\n function compareMultiple(object, other, orders) {\n var index = -1,\n objCriteria = object.criteria,\n othCriteria = other.criteria,\n length = objCriteria.length,\n ordersLength = orders.length;\n\n while (++index < length) {\n var result = compareAscending(objCriteria[index], othCriteria[index]);\n if (result) {\n if (index >= ordersLength) {\n return result;\n }\n var order = orders[index];\n return result * (order == 'desc' ? -1 : 1);\n }\n }\n // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications\n // that causes it, under certain circumstances, to provide the same value for\n // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247\n // for more details.\n //\n // This also ensures a stable sort in V8 and other engines.\n // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.\n return object.index - other.index;\n }\n\n /**\n * Creates an array that is the composition of partially applied arguments,\n * placeholders, and provided arguments into a single array of arguments.\n *\n * @private\n * @param {Array} args The provided arguments.\n * @param {Array} partials The arguments to prepend to those provided.\n * @param {Array} holders The `partials` placeholder indexes.\n * @params {boolean} [isCurried] Specify composing for a curried function.\n * @returns {Array} Returns the new array of composed arguments.\n */\n function composeArgs(args, partials, holders, isCurried) {\n var argsIndex = -1,\n argsLength = args.length,\n holdersLength = holders.length,\n leftIndex = -1,\n leftLength = partials.length,\n rangeLength = nativeMax(argsLength - holdersLength, 0),\n result = Array(leftLength + rangeLength),\n isUncurried = !isCurried;\n\n while (++leftIndex < leftLength) {\n result[leftIndex] = partials[leftIndex];\n }\n while (++argsIndex < holdersLength) {\n if (isUncurried || argsIndex < argsLength) {\n result[holders[argsIndex]] = args[argsIndex];\n }\n }\n while (rangeLength--) {\n result[leftIndex++] = args[argsIndex++];\n }\n return result;\n }\n\n /**\n * This function is like `composeArgs` except that the arguments composition\n * is tailored for `_.partialRight`.\n *\n * @private\n * @param {Array} args The provided arguments.\n * @param {Array} partials The arguments to append to those provided.\n * @param {Array} holders The `partials` placeholder indexes.\n * @params {boolean} [isCurried] Specify composing for a curried function.\n * @returns {Array} Returns the new array of composed arguments.\n */\n function composeArgsRight(args, partials, holders, isCurried) {\n var argsIndex = -1,\n argsLength = args.length,\n holdersIndex = -1,\n holdersLength = holders.length,\n rightIndex = -1,\n rightLength = partials.length,\n rangeLength = nativeMax(argsLength - holdersLength, 0),\n result = Array(rangeLength + rightLength),\n isUncurried = !isCurried;\n\n while (++argsIndex < rangeLength) {\n result[argsIndex] = args[argsIndex];\n }\n var offset = argsIndex;\n while (++rightIndex < rightLength) {\n result[offset + rightIndex] = partials[rightIndex];\n }\n while (++holdersIndex < holdersLength) {\n if (isUncurried || argsIndex < argsLength) {\n result[offset + holders[holdersIndex]] = args[argsIndex++];\n }\n }\n return result;\n }\n\n /**\n * Copies the values of `source` to `array`.\n *\n * @private\n * @param {Array} source The array to copy values from.\n * @param {Array} [array=[]] The array to copy values to.\n * @returns {Array} Returns `array`.\n */\n function copyArray(source, array) {\n var index = -1,\n length = source.length;\n\n array || (array = Array(length));\n while (++index < length) {\n array[index] = source[index];\n }\n return array;\n }\n\n /**\n * Copies properties of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy properties from.\n * @param {Array} props The property identifiers to copy.\n * @param {Object} [object={}] The object to copy properties to.\n * @param {Function} [customizer] The function to customize copied values.\n * @returns {Object} Returns `object`.\n */\n function copyObject(source, props, object, customizer) {\n var isNew = !object;\n object || (object = {});\n\n var index = -1,\n length = props.length;\n\n while (++index < length) {\n var key = props[index];\n\n var newValue = customizer\n ? customizer(object[key], source[key], key, object, source)\n : undefined;\n\n if (newValue === undefined) {\n newValue = source[key];\n }\n if (isNew) {\n baseAssignValue(object, key, newValue);\n } else {\n assignValue(object, key, newValue);\n }\n }\n return object;\n }\n\n /**\n * Copies own symbols of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\n function copySymbols(source, object) {\n return copyObject(source, getSymbols(source), object);\n }\n\n /**\n * Copies own and inherited symbols of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\n function copySymbolsIn(source, object) {\n return copyObject(source, getSymbolsIn(source), object);\n }\n\n /**\n * Creates a function like `_.groupBy`.\n *\n * @private\n * @param {Function} setter The function to set accumulator values.\n * @param {Function} [initializer] The accumulator object initializer.\n * @returns {Function} Returns the new aggregator function.\n */\n function createAggregator(setter, initializer) {\n return function(collection, iteratee) {\n var func = isArray(collection) ? arrayAggregator : baseAggregator,\n accumulator = initializer ? initializer() : {};\n\n return func(collection, setter, getIteratee(iteratee, 2), accumulator);\n };\n }\n\n /**\n * Creates a function like `_.assign`.\n *\n * @private\n * @param {Function} assigner The function to assign values.\n * @returns {Function} Returns the new assigner function.\n */\n function createAssigner(assigner) {\n return baseRest(function(object, sources) {\n var index = -1,\n length = sources.length,\n customizer = length > 1 ? sources[length - 1] : undefined,\n guard = length > 2 ? sources[2] : undefined;\n\n customizer = (assigner.length > 3 && typeof customizer == 'function')\n ? (length--, customizer)\n : undefined;\n\n if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n customizer = length < 3 ? undefined : customizer;\n length = 1;\n }\n object = Object(object);\n while (++index < length) {\n var source = sources[index];\n if (source) {\n assigner(object, source, index, customizer);\n }\n }\n return object;\n });\n }\n\n /**\n * Creates a `baseEach` or `baseEachRight` function.\n *\n * @private\n * @param {Function} eachFunc The function to iterate over a collection.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new base function.\n */\n function createBaseEach(eachFunc, fromRight) {\n return function(collection, iteratee) {\n if (collection == null) {\n return collection;\n }\n if (!isArrayLike(collection)) {\n return eachFunc(collection, iteratee);\n }\n var length = collection.length,\n index = fromRight ? length : -1,\n iterable = Object(collection);\n\n while ((fromRight ? index-- : ++index < length)) {\n if (iteratee(iterable[index], index, iterable) === false) {\n break;\n }\n }\n return collection;\n };\n }\n\n /**\n * Creates a base function for methods like `_.forIn` and `_.forOwn`.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new base function.\n */\n function createBaseFor(fromRight) {\n return function(object, iteratee, keysFunc) {\n var index = -1,\n iterable = Object(object),\n props = keysFunc(object),\n length = props.length;\n\n while (length--) {\n var key = props[fromRight ? length : ++index];\n if (iteratee(iterable[key], key, iterable) === false) {\n break;\n }\n }\n return object;\n };\n }\n\n /**\n * Creates a function that wraps `func` to invoke it with the optional `this`\n * binding of `thisArg`.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createBind(func, bitmask, thisArg) {\n var isBind = bitmask & WRAP_BIND_FLAG,\n Ctor = createCtor(func);\n\n function wrapper() {\n var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n return fn.apply(isBind ? thisArg : this, arguments);\n }\n return wrapper;\n }\n\n /**\n * Creates a function like `_.lowerFirst`.\n *\n * @private\n * @param {string} methodName The name of the `String` case method to use.\n * @returns {Function} Returns the new case function.\n */\n function createCaseFirst(methodName) {\n return function(string) {\n string = toString(string);\n\n var strSymbols = hasUnicode(string)\n ? stringToArray(string)\n : undefined;\n\n var chr = strSymbols\n ? strSymbols[0]\n : string.charAt(0);\n\n var trailing = strSymbols\n ? castSlice(strSymbols, 1).join('')\n : string.slice(1);\n\n return chr[methodName]() + trailing;\n };\n }\n\n /**\n * Creates a function like `_.camelCase`.\n *\n * @private\n * @param {Function} callback The function to combine each word.\n * @returns {Function} Returns the new compounder function.\n */\n function createCompounder(callback) {\n return function(string) {\n return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');\n };\n }\n\n /**\n * Creates a function that produces an instance of `Ctor` regardless of\n * whether it was invoked as part of a `new` expression or by `call` or `apply`.\n *\n * @private\n * @param {Function} Ctor The constructor to wrap.\n * @returns {Function} Returns the new wrapped function.\n */\n function createCtor(Ctor) {\n return function() {\n // Use a `switch` statement to work with class constructors. See\n // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist\n // for more details.\n var args = arguments;\n switch (args.length) {\n case 0: return new Ctor;\n case 1: return new Ctor(args[0]);\n case 2: return new Ctor(args[0], args[1]);\n case 3: return new Ctor(args[0], args[1], args[2]);\n case 4: return new Ctor(args[0], args[1], args[2], args[3]);\n case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);\n case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);\n case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);\n }\n var thisBinding = baseCreate(Ctor.prototype),\n result = Ctor.apply(thisBinding, args);\n\n // Mimic the constructor's `return` behavior.\n // See https://es5.github.io/#x13.2.2 for more details.\n return isObject(result) ? result : thisBinding;\n };\n }\n\n /**\n * Creates a function that wraps `func` to enable currying.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {number} arity The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createCurry(func, bitmask, arity) {\n var Ctor = createCtor(func);\n\n function wrapper() {\n var length = arguments.length,\n args = Array(length),\n index = length,\n placeholder = getHolder(wrapper);\n\n while (index--) {\n args[index] = arguments[index];\n }\n var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)\n ? []\n : replaceHolders(args, placeholder);\n\n length -= holders.length;\n if (length < arity) {\n return createRecurry(\n func, bitmask, createHybrid, wrapper.placeholder, undefined,\n args, holders, undefined, undefined, arity - length);\n }\n var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n return apply(fn, this, args);\n }\n return wrapper;\n }\n\n /**\n * Creates a `_.find` or `_.findLast` function.\n *\n * @private\n * @param {Function} findIndexFunc The function to find the collection index.\n * @returns {Function} Returns the new find function.\n */\n function createFind(findIndexFunc) {\n return function(collection, predicate, fromIndex) {\n var iterable = Object(collection);\n if (!isArrayLike(collection)) {\n var iteratee = getIteratee(predicate, 3);\n collection = keys(collection);\n predicate = function(key) { return iteratee(iterable[key], key, iterable); };\n }\n var index = findIndexFunc(collection, predicate, fromIndex);\n return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;\n };\n }\n\n /**\n * Creates a `_.flow` or `_.flowRight` function.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new flow function.\n */\n function createFlow(fromRight) {\n return flatRest(function(funcs) {\n var length = funcs.length,\n index = length,\n prereq = LodashWrapper.prototype.thru;\n\n if (fromRight) {\n funcs.reverse();\n }\n while (index--) {\n var func = funcs[index];\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n if (prereq && !wrapper && getFuncName(func) == 'wrapper') {\n var wrapper = new LodashWrapper([], true);\n }\n }\n index = wrapper ? index : length;\n while (++index < length) {\n func = funcs[index];\n\n var funcName = getFuncName(func),\n data = funcName == 'wrapper' ? getData(func) : undefined;\n\n if (data && isLaziable(data[0]) &&\n data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&\n !data[4].length && data[9] == 1\n ) {\n wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);\n } else {\n wrapper = (func.length == 1 && isLaziable(func))\n ? wrapper[funcName]()\n : wrapper.thru(func);\n }\n }\n return function() {\n var args = arguments,\n value = args[0];\n\n if (wrapper && args.length == 1 && isArray(value)) {\n return wrapper.plant(value).value();\n }\n var index = 0,\n result = length ? funcs[index].apply(this, args) : value;\n\n while (++index < length) {\n result = funcs[index].call(this, result);\n }\n return result;\n };\n });\n }\n\n /**\n * Creates a function that wraps `func` to invoke it with optional `this`\n * binding of `thisArg`, partial application, and currying.\n *\n * @private\n * @param {Function|string} func The function or method name to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to prepend to those provided to\n * the new function.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [partialsRight] The arguments to append to those provided\n * to the new function.\n * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {\n var isAry = bitmask & WRAP_ARY_FLAG,\n isBind = bitmask & WRAP_BIND_FLAG,\n isBindKey = bitmask & WRAP_BIND_KEY_FLAG,\n isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),\n isFlip = bitmask & WRAP_FLIP_FLAG,\n Ctor = isBindKey ? undefined : createCtor(func);\n\n function wrapper() {\n var length = arguments.length,\n args = Array(length),\n index = length;\n\n while (index--) {\n args[index] = arguments[index];\n }\n if (isCurried) {\n var placeholder = getHolder(wrapper),\n holdersCount = countHolders(args, placeholder);\n }\n if (partials) {\n args = composeArgs(args, partials, holders, isCurried);\n }\n if (partialsRight) {\n args = composeArgsRight(args, partialsRight, holdersRight, isCurried);\n }\n length -= holdersCount;\n if (isCurried && length < arity) {\n var newHolders = replaceHolders(args, placeholder);\n return createRecurry(\n func, bitmask, createHybrid, wrapper.placeholder, thisArg,\n args, newHolders, argPos, ary, arity - length\n );\n }\n var thisBinding = isBind ? thisArg : this,\n fn = isBindKey ? thisBinding[func] : func;\n\n length = args.length;\n if (argPos) {\n args = reorder(args, argPos);\n } else if (isFlip && length > 1) {\n args.reverse();\n }\n if (isAry && ary < length) {\n args.length = ary;\n }\n if (this && this !== root && this instanceof wrapper) {\n fn = Ctor || createCtor(fn);\n }\n return fn.apply(thisBinding, args);\n }\n return wrapper;\n }\n\n /**\n * Creates a function like `_.invertBy`.\n *\n * @private\n * @param {Function} setter The function to set accumulator values.\n * @param {Function} toIteratee The function to resolve iteratees.\n * @returns {Function} Returns the new inverter function.\n */\n function createInverter(setter, toIteratee) {\n return function(object, iteratee) {\n return baseInverter(object, setter, toIteratee(iteratee), {});\n };\n }\n\n /**\n * Creates a function that performs a mathematical operation on two values.\n *\n * @private\n * @param {Function} operator The function to perform the operation.\n * @param {number} [defaultValue] The value used for `undefined` arguments.\n * @returns {Function} Returns the new mathematical operation function.\n */\n function createMathOperation(operator, defaultValue) {\n return function(value, other) {\n var result;\n if (value === undefined && other === undefined) {\n return defaultValue;\n }\n if (value !== undefined) {\n result = value;\n }\n if (other !== undefined) {\n if (result === undefined) {\n return other;\n }\n if (typeof value == 'string' || typeof other == 'string') {\n value = baseToString(value);\n other = baseToString(other);\n } else {\n value = baseToNumber(value);\n other = baseToNumber(other);\n }\n result = operator(value, other);\n }\n return result;\n };\n }\n\n /**\n * Creates a function like `_.over`.\n *\n * @private\n * @param {Function} arrayFunc The function to iterate over iteratees.\n * @returns {Function} Returns the new over function.\n */\n function createOver(arrayFunc) {\n return flatRest(function(iteratees) {\n iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n return baseRest(function(args) {\n var thisArg = this;\n return arrayFunc(iteratees, function(iteratee) {\n return apply(iteratee, thisArg, args);\n });\n });\n });\n }\n\n /**\n * Creates the padding for `string` based on `length`. The `chars` string\n * is truncated if the number of characters exceeds `length`.\n *\n * @private\n * @param {number} length The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padding for `string`.\n */\n function createPadding(length, chars) {\n chars = chars === undefined ? ' ' : baseToString(chars);\n\n var charsLength = chars.length;\n if (charsLength < 2) {\n return charsLength ? baseRepeat(chars, length) : chars;\n }\n var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));\n return hasUnicode(chars)\n ? castSlice(stringToArray(result), 0, length).join('')\n : result.slice(0, length);\n }\n\n /**\n * Creates a function that wraps `func` to invoke it with the `this` binding\n * of `thisArg` and `partials` prepended to the arguments it receives.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {Array} partials The arguments to prepend to those provided to\n * the new function.\n * @returns {Function} Returns the new wrapped function.\n */\n function createPartial(func, bitmask, thisArg, partials) {\n var isBind = bitmask & WRAP_BIND_FLAG,\n Ctor = createCtor(func);\n\n function wrapper() {\n var argsIndex = -1,\n argsLength = arguments.length,\n leftIndex = -1,\n leftLength = partials.length,\n args = Array(leftLength + argsLength),\n fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n\n while (++leftIndex < leftLength) {\n args[leftIndex] = partials[leftIndex];\n }\n while (argsLength--) {\n args[leftIndex++] = arguments[++argsIndex];\n }\n return apply(fn, isBind ? thisArg : this, args);\n }\n return wrapper;\n }\n\n /**\n * Creates a `_.range` or `_.rangeRight` function.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new range function.\n */\n function createRange(fromRight) {\n return function(start, end, step) {\n if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {\n end = step = undefined;\n }\n // Ensure the sign of `-0` is preserved.\n start = toFinite(start);\n if (end === undefined) {\n end = start;\n start = 0;\n } else {\n end = toFinite(end);\n }\n step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);\n return baseRange(start, end, step, fromRight);\n };\n }\n\n /**\n * Creates a function that performs a relational operation on two values.\n *\n * @private\n * @param {Function} operator The function to perform the operation.\n * @returns {Function} Returns the new relational operation function.\n */\n function createRelationalOperation(operator) {\n return function(value, other) {\n if (!(typeof value == 'string' && typeof other == 'string')) {\n value = toNumber(value);\n other = toNumber(other);\n }\n return operator(value, other);\n };\n }\n\n /**\n * Creates a function that wraps `func` to continue currying.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {Function} wrapFunc The function to create the `func` wrapper.\n * @param {*} placeholder The placeholder value.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to prepend to those provided to\n * the new function.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {\n var isCurry = bitmask & WRAP_CURRY_FLAG,\n newHolders = isCurry ? holders : undefined,\n newHoldersRight = isCurry ? undefined : holders,\n newPartials = isCurry ? partials : undefined,\n newPartialsRight = isCurry ? undefined : partials;\n\n bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);\n bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);\n\n if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {\n bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);\n }\n var newData = [\n func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,\n newHoldersRight, argPos, ary, arity\n ];\n\n var result = wrapFunc.apply(undefined, newData);\n if (isLaziable(func)) {\n setData(result, newData);\n }\n result.placeholder = placeholder;\n return setWrapToString(result, func, bitmask);\n }\n\n /**\n * Creates a function like `_.round`.\n *\n * @private\n * @param {string} methodName The name of the `Math` method to use when rounding.\n * @returns {Function} Returns the new round function.\n */\n function createRound(methodName) {\n var func = Math[methodName];\n return function(number, precision) {\n number = toNumber(number);\n precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);\n if (precision && nativeIsFinite(number)) {\n // Shift with exponential notation to avoid floating-point issues.\n // See [MDN](https://mdn.io/round#Examples) for more details.\n var pair = (toString(number) + 'e').split('e'),\n value = func(pair[0] + 'e' + (+pair[1] + precision));\n\n pair = (toString(value) + 'e').split('e');\n return +(pair[0] + 'e' + (+pair[1] - precision));\n }\n return func(number);\n };\n }\n\n /**\n * Creates a set object of `values`.\n *\n * @private\n * @param {Array} values The values to add to the set.\n * @returns {Object} Returns the new set.\n */\n var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {\n return new Set(values);\n };\n\n /**\n * Creates a `_.toPairs` or `_.toPairsIn` function.\n *\n * @private\n * @param {Function} keysFunc The function to get the keys of a given object.\n * @returns {Function} Returns the new pairs function.\n */\n function createToPairs(keysFunc) {\n return function(object) {\n var tag = getTag(object);\n if (tag == mapTag) {\n return mapToArray(object);\n }\n if (tag == setTag) {\n return setToPairs(object);\n }\n return baseToPairs(object, keysFunc(object));\n };\n }\n\n /**\n * Creates a function that either curries or invokes `func` with optional\n * `this` binding and partially applied arguments.\n *\n * @private\n * @param {Function|string} func The function or method name to wrap.\n * @param {number} bitmask The bitmask flags.\n * 1 - `_.bind`\n * 2 - `_.bindKey`\n * 4 - `_.curry` or `_.curryRight` of a bound function\n * 8 - `_.curry`\n * 16 - `_.curryRight`\n * 32 - `_.partial`\n * 64 - `_.partialRight`\n * 128 - `_.rearg`\n * 256 - `_.ary`\n * 512 - `_.flip`\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to be partially applied.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {\n var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;\n if (!isBindKey && typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n var length = partials ? partials.length : 0;\n if (!length) {\n bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);\n partials = holders = undefined;\n }\n ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);\n arity = arity === undefined ? arity : toInteger(arity);\n length -= holders ? holders.length : 0;\n\n if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {\n var partialsRight = partials,\n holdersRight = holders;\n\n partials = holders = undefined;\n }\n var data = isBindKey ? undefined : getData(func);\n\n var newData = [\n func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,\n argPos, ary, arity\n ];\n\n if (data) {\n mergeData(newData, data);\n }\n func = newData[0];\n bitmask = newData[1];\n thisArg = newData[2];\n partials = newData[3];\n holders = newData[4];\n arity = newData[9] = newData[9] === undefined\n ? (isBindKey ? 0 : func.length)\n : nativeMax(newData[9] - length, 0);\n\n if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {\n bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);\n }\n if (!bitmask || bitmask == WRAP_BIND_FLAG) {\n var result = createBind(func, bitmask, thisArg);\n } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {\n result = createCurry(func, bitmask, arity);\n } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {\n result = createPartial(func, bitmask, thisArg, partials);\n } else {\n result = createHybrid.apply(undefined, newData);\n }\n var setter = data ? baseSetData : setData;\n return setWrapToString(setter(result, newData), func, bitmask);\n }\n\n /**\n * Used by `_.defaults` to customize its `_.assignIn` use to assign properties\n * of source objects to the destination object for all destination properties\n * that resolve to `undefined`.\n *\n * @private\n * @param {*} objValue The destination value.\n * @param {*} srcValue The source value.\n * @param {string} key The key of the property to assign.\n * @param {Object} object The parent object of `objValue`.\n * @returns {*} Returns the value to assign.\n */\n function customDefaultsAssignIn(objValue, srcValue, key, object) {\n if (objValue === undefined ||\n (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n return srcValue;\n }\n return objValue;\n }\n\n /**\n * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source\n * objects into destination objects that are passed thru.\n *\n * @private\n * @param {*} objValue The destination value.\n * @param {*} srcValue The source value.\n * @param {string} key The key of the property to merge.\n * @param {Object} object The parent object of `objValue`.\n * @param {Object} source The parent object of `srcValue`.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n * @returns {*} Returns the value to assign.\n */\n function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {\n if (isObject(objValue) && isObject(srcValue)) {\n // Recursively merge objects and arrays (susceptible to call stack limits).\n stack.set(srcValue, objValue);\n baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);\n stack['delete'](srcValue);\n }\n return objValue;\n }\n\n /**\n * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain\n * objects.\n *\n * @private\n * @param {*} value The value to inspect.\n * @param {string} key The key of the property to inspect.\n * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.\n */\n function customOmitClone(value) {\n return isPlainObject(value) ? undefined : value;\n }\n\n /**\n * A specialized version of `baseIsEqualDeep` for arrays with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Array} array The array to compare.\n * @param {Array} other The other array to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `array` and `other` objects.\n * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n */\n function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n arrLength = array.length,\n othLength = other.length;\n\n if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n return false;\n }\n // Check that cyclic values are equal.\n var arrStacked = stack.get(array);\n var othStacked = stack.get(other);\n if (arrStacked && othStacked) {\n return arrStacked == other && othStacked == array;\n }\n var index = -1,\n result = true,\n seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;\n\n stack.set(array, other);\n stack.set(other, array);\n\n // Ignore non-index properties.\n while (++index < arrLength) {\n var arrValue = array[index],\n othValue = other[index];\n\n if (customizer) {\n var compared = isPartial\n ? customizer(othValue, arrValue, index, other, array, stack)\n : customizer(arrValue, othValue, index, array, other, stack);\n }\n if (compared !== undefined) {\n if (compared) {\n continue;\n }\n result = false;\n break;\n }\n // Recursively compare arrays (susceptible to call stack limits).\n if (seen) {\n if (!arraySome(other, function(othValue, othIndex) {\n if (!cacheHas(seen, othIndex) &&\n (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\n return seen.push(othIndex);\n }\n })) {\n result = false;\n break;\n }\n } else if (!(\n arrValue === othValue ||\n equalFunc(arrValue, othValue, bitmask, customizer, stack)\n )) {\n result = false;\n break;\n }\n }\n stack['delete'](array);\n stack['delete'](other);\n return result;\n }\n\n /**\n * A specialized version of `baseIsEqualDeep` for comparing objects of\n * the same `toStringTag`.\n *\n * **Note:** This function only supports comparing values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {string} tag The `toStringTag` of the objects to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {\n switch (tag) {\n case dataViewTag:\n if ((object.byteLength != other.byteLength) ||\n (object.byteOffset != other.byteOffset)) {\n return false;\n }\n object = object.buffer;\n other = other.buffer;\n\n case arrayBufferTag:\n if ((object.byteLength != other.byteLength) ||\n !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n return false;\n }\n return true;\n\n case boolTag:\n case dateTag:\n case numberTag:\n // Coerce booleans to `1` or `0` and dates to milliseconds.\n // Invalid dates are coerced to `NaN`.\n return eq(+object, +other);\n\n case errorTag:\n return object.name == other.name && object.message == other.message;\n\n case regexpTag:\n case stringTag:\n // Coerce regexes to strings and treat strings, primitives and objects,\n // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring\n // for more details.\n return object == (other + '');\n\n case mapTag:\n var convert = mapToArray;\n\n case setTag:\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG;\n convert || (convert = setToArray);\n\n if (object.size != other.size && !isPartial) {\n return false;\n }\n // Assume cyclic values are equal.\n var stacked = stack.get(object);\n if (stacked) {\n return stacked == other;\n }\n bitmask |= COMPARE_UNORDERED_FLAG;\n\n // Recursively compare objects (susceptible to call stack limits).\n stack.set(object, other);\n var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);\n stack['delete'](object);\n return result;\n\n case symbolTag:\n if (symbolValueOf) {\n return symbolValueOf.call(object) == symbolValueOf.call(other);\n }\n }\n return false;\n }\n\n /**\n * A specialized version of `baseIsEqualDeep` for objects with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n objProps = getAllKeys(object),\n objLength = objProps.length,\n othProps = getAllKeys(other),\n othLength = othProps.length;\n\n if (objLength != othLength && !isPartial) {\n return false;\n }\n var index = objLength;\n while (index--) {\n var key = objProps[index];\n if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {\n return false;\n }\n }\n // Check that cyclic values are equal.\n var objStacked = stack.get(object);\n var othStacked = stack.get(other);\n if (objStacked && othStacked) {\n return objStacked == other && othStacked == object;\n }\n var result = true;\n stack.set(object, other);\n stack.set(other, object);\n\n var skipCtor = isPartial;\n while (++index < objLength) {\n key = objProps[index];\n var objValue = object[key],\n othValue = other[key];\n\n if (customizer) {\n var compared = isPartial\n ? customizer(othValue, objValue, key, other, object, stack)\n : customizer(objValue, othValue, key, object, other, stack);\n }\n // Recursively compare objects (susceptible to call stack limits).\n if (!(compared === undefined\n ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))\n : compared\n )) {\n result = false;\n break;\n }\n skipCtor || (skipCtor = key == 'constructor');\n }\n if (result && !skipCtor) {\n var objCtor = object.constructor,\n othCtor = other.constructor;\n\n // Non `Object` object instances with different constructors are not equal.\n if (objCtor != othCtor &&\n ('constructor' in object && 'constructor' in other) &&\n !(typeof objCtor == 'function' && objCtor instanceof objCtor &&\n typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n result = false;\n }\n }\n stack['delete'](object);\n stack['delete'](other);\n return result;\n }\n\n /**\n * A specialized version of `baseRest` which flattens the rest array.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @returns {Function} Returns the new function.\n */\n function flatRest(func) {\n return setToString(overRest(func, undefined, flatten), func + '');\n }\n\n /**\n * Creates an array of own enumerable property names and symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\n function getAllKeys(object) {\n return baseGetAllKeys(object, keys, getSymbols);\n }\n\n /**\n * Creates an array of own and inherited enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\n function getAllKeysIn(object) {\n return baseGetAllKeys(object, keysIn, getSymbolsIn);\n }\n\n /**\n * Gets metadata for `func`.\n *\n * @private\n * @param {Function} func The function to query.\n * @returns {*} Returns the metadata for `func`.\n */\n var getData = !metaMap ? noop : function(func) {\n return metaMap.get(func);\n };\n\n /**\n * Gets the name of `func`.\n *\n * @private\n * @param {Function} func The function to query.\n * @returns {string} Returns the function name.\n */\n function getFuncName(func) {\n var result = (func.name + ''),\n array = realNames[result],\n length = hasOwnProperty.call(realNames, result) ? array.length : 0;\n\n while (length--) {\n var data = array[length],\n otherFunc = data.func;\n if (otherFunc == null || otherFunc == func) {\n return data.name;\n }\n }\n return result;\n }\n\n /**\n * Gets the argument placeholder value for `func`.\n *\n * @private\n * @param {Function} func The function to inspect.\n * @returns {*} Returns the placeholder value.\n */\n function getHolder(func) {\n var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;\n return object.placeholder;\n }\n\n /**\n * Gets the appropriate \"iteratee\" function. If `_.iteratee` is customized,\n * this function returns the custom method, otherwise it returns `baseIteratee`.\n * If arguments are provided, the chosen function is invoked with them and\n * its result is returned.\n *\n * @private\n * @param {*} [value] The value to convert to an iteratee.\n * @param {number} [arity] The arity of the created iteratee.\n * @returns {Function} Returns the chosen function or its result.\n */\n function getIteratee() {\n var result = lodash.iteratee || iteratee;\n result = result === iteratee ? baseIteratee : result;\n return arguments.length ? result(arguments[0], arguments[1]) : result;\n }\n\n /**\n * Gets the data for `map`.\n *\n * @private\n * @param {Object} map The map to query.\n * @param {string} key The reference key.\n * @returns {*} Returns the map data.\n */\n function getMapData(map, key) {\n var data = map.__data__;\n return isKeyable(key)\n ? data[typeof key == 'string' ? 'string' : 'hash']\n : data.map;\n }\n\n /**\n * Gets the property names, values, and compare flags of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the match data of `object`.\n */\n function getMatchData(object) {\n var result = keys(object),\n length = result.length;\n\n while (length--) {\n var key = result[length],\n value = object[key];\n\n result[length] = [key, value, isStrictComparable(value)];\n }\n return result;\n }\n\n /**\n * Gets the native function at `key` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the method to get.\n * @returns {*} Returns the function if it's native, else `undefined`.\n */\n function getNative(object, key) {\n var value = getValue(object, key);\n return baseIsNative(value) ? value : undefined;\n }\n\n /**\n * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the raw `toStringTag`.\n */\n function getRawTag(value) {\n var isOwn = hasOwnProperty.call(value, symToStringTag),\n tag = value[symToStringTag];\n\n try {\n value[symToStringTag] = undefined;\n var unmasked = true;\n } catch (e) {}\n\n var result = nativeObjectToString.call(value);\n if (unmasked) {\n if (isOwn) {\n value[symToStringTag] = tag;\n } else {\n delete value[symToStringTag];\n }\n }\n return result;\n }\n\n /**\n * Creates an array of the own enumerable symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\n var getSymbols = !nativeGetSymbols ? stubArray : function(object) {\n if (object == null) {\n return [];\n }\n object = Object(object);\n return arrayFilter(nativeGetSymbols(object), function(symbol) {\n return propertyIsEnumerable.call(object, symbol);\n });\n };\n\n /**\n * Creates an array of the own and inherited enumerable symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\n var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {\n var result = [];\n while (object) {\n arrayPush(result, getSymbols(object));\n object = getPrototype(object);\n }\n return result;\n };\n\n /**\n * Gets the `toStringTag` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\n var getTag = baseGetTag;\n\n // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.\n if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n (Map && getTag(new Map) != mapTag) ||\n (Promise && getTag(Promise.resolve()) != promiseTag) ||\n (Set && getTag(new Set) != setTag) ||\n (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n getTag = function(value) {\n var result = baseGetTag(value),\n Ctor = result == objectTag ? value.constructor : undefined,\n ctorString = Ctor ? toSource(Ctor) : '';\n\n if (ctorString) {\n switch (ctorString) {\n case dataViewCtorString: return dataViewTag;\n case mapCtorString: return mapTag;\n case promiseCtorString: return promiseTag;\n case setCtorString: return setTag;\n case weakMapCtorString: return weakMapTag;\n }\n }\n return result;\n };\n }\n\n /**\n * Gets the view, applying any `transforms` to the `start` and `end` positions.\n *\n * @private\n * @param {number} start The start of the view.\n * @param {number} end The end of the view.\n * @param {Array} transforms The transformations to apply to the view.\n * @returns {Object} Returns an object containing the `start` and `end`\n * positions of the view.\n */\n function getView(start, end, transforms) {\n var index = -1,\n length = transforms.length;\n\n while (++index < length) {\n var data = transforms[index],\n size = data.size;\n\n switch (data.type) {\n case 'drop': start += size; break;\n case 'dropRight': end -= size; break;\n case 'take': end = nativeMin(end, start + size); break;\n case 'takeRight': start = nativeMax(start, end - size); break;\n }\n }\n return { 'start': start, 'end': end };\n }\n\n /**\n * Extracts wrapper details from the `source` body comment.\n *\n * @private\n * @param {string} source The source to inspect.\n * @returns {Array} Returns the wrapper details.\n */\n function getWrapDetails(source) {\n var match = source.match(reWrapDetails);\n return match ? match[1].split(reSplitDetails) : [];\n }\n\n /**\n * Checks if `path` exists on `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @param {Function} hasFunc The function to check properties.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n */\n function hasPath(object, path, hasFunc) {\n path = castPath(path, object);\n\n var index = -1,\n length = path.length,\n result = false;\n\n while (++index < length) {\n var key = toKey(path[index]);\n if (!(result = object != null && hasFunc(object, key))) {\n break;\n }\n object = object[key];\n }\n if (result || ++index != length) {\n return result;\n }\n length = object == null ? 0 : object.length;\n return !!length && isLength(length) && isIndex(key, length) &&\n (isArray(object) || isArguments(object));\n }\n\n /**\n * Initializes an array clone.\n *\n * @private\n * @param {Array} array The array to clone.\n * @returns {Array} Returns the initialized clone.\n */\n function initCloneArray(array) {\n var length = array.length,\n result = new array.constructor(length);\n\n // Add properties assigned by `RegExp#exec`.\n if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n result.index = array.index;\n result.input = array.input;\n }\n return result;\n }\n\n /**\n * Initializes an object clone.\n *\n * @private\n * @param {Object} object The object to clone.\n * @returns {Object} Returns the initialized clone.\n */\n function initCloneObject(object) {\n return (typeof object.constructor == 'function' && !isPrototype(object))\n ? baseCreate(getPrototype(object))\n : {};\n }\n\n /**\n * Initializes an object clone based on its `toStringTag`.\n *\n * **Note:** This function only supports cloning values with tags of\n * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.\n *\n * @private\n * @param {Object} object The object to clone.\n * @param {string} tag The `toStringTag` of the object to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the initialized clone.\n */\n function initCloneByTag(object, tag, isDeep) {\n var Ctor = object.constructor;\n switch (tag) {\n case arrayBufferTag:\n return cloneArrayBuffer(object);\n\n case boolTag:\n case dateTag:\n return new Ctor(+object);\n\n case dataViewTag:\n return cloneDataView(object, isDeep);\n\n case float32Tag: case float64Tag:\n case int8Tag: case int16Tag: case int32Tag:\n case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:\n return cloneTypedArray(object, isDeep);\n\n case mapTag:\n return new Ctor;\n\n case numberTag:\n case stringTag:\n return new Ctor(object);\n\n case regexpTag:\n return cloneRegExp(object);\n\n case setTag:\n return new Ctor;\n\n case symbolTag:\n return cloneSymbol(object);\n }\n }\n\n /**\n * Inserts wrapper `details` in a comment at the top of the `source` body.\n *\n * @private\n * @param {string} source The source to modify.\n * @returns {Array} details The details to insert.\n * @returns {string} Returns the modified source.\n */\n function insertWrapDetails(source, details) {\n var length = details.length;\n if (!length) {\n return source;\n }\n var lastIndex = length - 1;\n details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];\n details = details.join(length > 2 ? ', ' : ' ');\n return source.replace(reWrapComment, '{\\n/* [wrapped with ' + details + '] */\\n');\n }\n\n /**\n * Checks if `value` is a flattenable `arguments` object or array.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.\n */\n function isFlattenable(value) {\n return isArray(value) || isArguments(value) ||\n !!(spreadableSymbol && value && value[spreadableSymbol]);\n }\n\n /**\n * Checks if `value` is a valid array-like index.\n *\n * @private\n * @param {*} value The value to check.\n * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n */\n function isIndex(value, length) {\n var type = typeof value;\n length = length == null ? MAX_SAFE_INTEGER : length;\n\n return !!length &&\n (type == 'number' ||\n (type != 'symbol' && reIsUint.test(value))) &&\n (value > -1 && value % 1 == 0 && value < length);\n }\n\n /**\n * Checks if the given arguments are from an iteratee call.\n *\n * @private\n * @param {*} value The potential iteratee value argument.\n * @param {*} index The potential iteratee index or key argument.\n * @param {*} object The potential iteratee object argument.\n * @returns {boolean} Returns `true` if the arguments are from an iteratee call,\n * else `false`.\n */\n function isIterateeCall(value, index, object) {\n if (!isObject(object)) {\n return false;\n }\n var type = typeof index;\n if (type == 'number'\n ? (isArrayLike(object) && isIndex(index, object.length))\n : (type == 'string' && index in object)\n ) {\n return eq(object[index], value);\n }\n return false;\n }\n\n /**\n * Checks if `value` is a property name and not a property path.\n *\n * @private\n * @param {*} value The value to check.\n * @param {Object} [object] The object to query keys on.\n * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\n */\n function isKey(value, object) {\n if (isArray(value)) {\n return false;\n }\n var type = typeof value;\n if (type == 'number' || type == 'symbol' || type == 'boolean' ||\n value == null || isSymbol(value)) {\n return true;\n }\n return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||\n (object != null && value in Object(object));\n }\n\n /**\n * Checks if `value` is suitable for use as unique object key.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n */\n function isKeyable(value) {\n var type = typeof value;\n return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n ? (value !== '__proto__')\n : (value === null);\n }\n\n /**\n * Checks if `func` has a lazy counterpart.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` has a lazy counterpart,\n * else `false`.\n */\n function isLaziable(func) {\n var funcName = getFuncName(func),\n other = lodash[funcName];\n\n if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {\n return false;\n }\n if (func === other) {\n return true;\n }\n var data = getData(other);\n return !!data && func === data[0];\n }\n\n /**\n * Checks if `func` has its source masked.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n */\n function isMasked(func) {\n return !!maskSrcKey && (maskSrcKey in func);\n }\n\n /**\n * Checks if `func` is capable of being masked.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `func` is maskable, else `false`.\n */\n var isMaskable = coreJsData ? isFunction : stubFalse;\n\n /**\n * Checks if `value` is likely a prototype object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n */\n function isPrototype(value) {\n var Ctor = value && value.constructor,\n proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n return value === proto;\n }\n\n /**\n * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` if suitable for strict\n * equality comparisons, else `false`.\n */\n function isStrictComparable(value) {\n return value === value && !isObject(value);\n }\n\n /**\n * A specialized version of `matchesProperty` for source values suitable\n * for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\n function matchesStrictComparable(key, srcValue) {\n return function(object) {\n if (object == null) {\n return false;\n }\n return object[key] === srcValue &&\n (srcValue !== undefined || (key in Object(object)));\n };\n }\n\n /**\n * A specialized version of `_.memoize` which clears the memoized function's\n * cache when it exceeds `MAX_MEMOIZE_SIZE`.\n *\n * @private\n * @param {Function} func The function to have its output memoized.\n * @returns {Function} Returns the new memoized function.\n */\n function memoizeCapped(func) {\n var result = memoize(func, function(key) {\n if (cache.size === MAX_MEMOIZE_SIZE) {\n cache.clear();\n }\n return key;\n });\n\n var cache = result.cache;\n return result;\n }\n\n /**\n * Merges the function metadata of `source` into `data`.\n *\n * Merging metadata reduces the number of wrappers used to invoke a function.\n * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`\n * may be applied regardless of execution order. Methods like `_.ary` and\n * `_.rearg` modify function arguments, making the order in which they are\n * executed important, preventing the merging of metadata. However, we make\n * an exception for a safe combined case where curried functions have `_.ary`\n * and or `_.rearg` applied.\n *\n * @private\n * @param {Array} data The destination metadata.\n * @param {Array} source The source metadata.\n * @returns {Array} Returns `data`.\n */\n function mergeData(data, source) {\n var bitmask = data[1],\n srcBitmask = source[1],\n newBitmask = bitmask | srcBitmask,\n isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);\n\n var isCombo =\n ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||\n ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||\n ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));\n\n // Exit early if metadata can't be merged.\n if (!(isCommon || isCombo)) {\n return data;\n }\n // Use source `thisArg` if available.\n if (srcBitmask & WRAP_BIND_FLAG) {\n data[2] = source[2];\n // Set when currying a bound function.\n newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;\n }\n // Compose partial arguments.\n var value = source[3];\n if (value) {\n var partials = data[3];\n data[3] = partials ? composeArgs(partials, value, source[4]) : value;\n data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];\n }\n // Compose partial right arguments.\n value = source[5];\n if (value) {\n partials = data[5];\n data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;\n data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];\n }\n // Use source `argPos` if available.\n value = source[7];\n if (value) {\n data[7] = value;\n }\n // Use source `ary` if it's smaller.\n if (srcBitmask & WRAP_ARY_FLAG) {\n data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);\n }\n // Use source `arity` if one is not provided.\n if (data[9] == null) {\n data[9] = source[9];\n }\n // Use source `func` and merge bitmasks.\n data[0] = source[0];\n data[1] = newBitmask;\n\n return data;\n }\n\n /**\n * This function is like\n * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * except that it includes inherited enumerable properties.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n function nativeKeysIn(object) {\n var result = [];\n if (object != null) {\n for (var key in Object(object)) {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * Converts `value` to a string using `Object.prototype.toString`.\n *\n * @private\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n */\n function objectToString(value) {\n return nativeObjectToString.call(value);\n }\n\n /**\n * A specialized version of `baseRest` which transforms the rest array.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @param {Function} transform The rest array transform.\n * @returns {Function} Returns the new function.\n */\n function overRest(func, start, transform) {\n start = nativeMax(start === undefined ? (func.length - 1) : start, 0);\n return function() {\n var args = arguments,\n index = -1,\n length = nativeMax(args.length - start, 0),\n array = Array(length);\n\n while (++index < length) {\n array[index] = args[start + index];\n }\n index = -1;\n var otherArgs = Array(start + 1);\n while (++index < start) {\n otherArgs[index] = args[index];\n }\n otherArgs[start] = transform(array);\n return apply(func, this, otherArgs);\n };\n }\n\n /**\n * Gets the parent value at `path` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} path The path to get the parent value of.\n * @returns {*} Returns the parent value.\n */\n function parent(object, path) {\n return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));\n }\n\n /**\n * Reorder `array` according to the specified indexes where the element at\n * the first index is assigned as the first element, the element at\n * the second index is assigned as the second element, and so on.\n *\n * @private\n * @param {Array} array The array to reorder.\n * @param {Array} indexes The arranged array indexes.\n * @returns {Array} Returns `array`.\n */\n function reorder(array, indexes) {\n var arrLength = array.length,\n length = nativeMin(indexes.length, arrLength),\n oldArray = copyArray(array);\n\n while (length--) {\n var index = indexes[length];\n array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;\n }\n return array;\n }\n\n /**\n * Gets the value at `key`, unless `key` is \"__proto__\" or \"constructor\".\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\n function safeGet(object, key) {\n if (key === 'constructor' && typeof object[key] === 'function') {\n return;\n }\n\n if (key == '__proto__') {\n return;\n }\n\n return object[key];\n }\n\n /**\n * Sets metadata for `func`.\n *\n * **Note:** If this function becomes hot, i.e. is invoked a lot in a short\n * period of time, it will trip its breaker and transition to an identity\n * function to avoid garbage collection pauses in V8. See\n * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)\n * for more details.\n *\n * @private\n * @param {Function} func The function to associate metadata with.\n * @param {*} data The metadata.\n * @returns {Function} Returns `func`.\n */\n var setData = shortOut(baseSetData);\n\n /**\n * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).\n *\n * @private\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @returns {number|Object} Returns the timer id or timeout object.\n */\n var setTimeout = ctxSetTimeout || function(func, wait) {\n return root.setTimeout(func, wait);\n };\n\n /**\n * Sets the `toString` method of `func` to return `string`.\n *\n * @private\n * @param {Function} func The function to modify.\n * @param {Function} string The `toString` result.\n * @returns {Function} Returns `func`.\n */\n var setToString = shortOut(baseSetToString);\n\n /**\n * Sets the `toString` method of `wrapper` to mimic the source of `reference`\n * with wrapper details in a comment at the top of the source body.\n *\n * @private\n * @param {Function} wrapper The function to modify.\n * @param {Function} reference The reference function.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @returns {Function} Returns `wrapper`.\n */\n function setWrapToString(wrapper, reference, bitmask) {\n var source = (reference + '');\n return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));\n }\n\n /**\n * Creates a function that'll short out and invoke `identity` instead\n * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`\n * milliseconds.\n *\n * @private\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new shortable function.\n */\n function shortOut(func) {\n var count = 0,\n lastCalled = 0;\n\n return function() {\n var stamp = nativeNow(),\n remaining = HOT_SPAN - (stamp - lastCalled);\n\n lastCalled = stamp;\n if (remaining > 0) {\n if (++count >= HOT_COUNT) {\n return arguments[0];\n }\n } else {\n count = 0;\n }\n return func.apply(undefined, arguments);\n };\n }\n\n /**\n * A specialized version of `_.shuffle` which mutates and sets the size of `array`.\n *\n * @private\n * @param {Array} array The array to shuffle.\n * @param {number} [size=array.length] The size of `array`.\n * @returns {Array} Returns `array`.\n */\n function shuffleSelf(array, size) {\n var index = -1,\n length = array.length,\n lastIndex = length - 1;\n\n size = size === undefined ? length : size;\n while (++index < size) {\n var rand = baseRandom(index, lastIndex),\n value = array[rand];\n\n array[rand] = array[index];\n array[index] = value;\n }\n array.length = size;\n return array;\n }\n\n /**\n * Converts `string` to a property path array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the property path array.\n */\n var stringToPath = memoizeCapped(function(string) {\n var result = [];\n if (string.charCodeAt(0) === 46 /* . */) {\n result.push('');\n }\n string.replace(rePropName, function(match, number, quote, subString) {\n result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));\n });\n return result;\n });\n\n /**\n * Converts `value` to a string key if it's not a string or symbol.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {string|symbol} Returns the key.\n */\n function toKey(value) {\n if (typeof value == 'string' || isSymbol(value)) {\n return value;\n }\n var result = (value + '');\n return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n }\n\n /**\n * Converts `func` to its source code.\n *\n * @private\n * @param {Function} func The function to convert.\n * @returns {string} Returns the source code.\n */\n function toSource(func) {\n if (func != null) {\n try {\n return funcToString.call(func);\n } catch (e) {}\n try {\n return (func + '');\n } catch (e) {}\n }\n return '';\n }\n\n /**\n * Updates wrapper `details` based on `bitmask` flags.\n *\n * @private\n * @returns {Array} details The details to modify.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @returns {Array} Returns `details`.\n */\n function updateWrapDetails(details, bitmask) {\n arrayEach(wrapFlags, function(pair) {\n var value = '_.' + pair[0];\n if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {\n details.push(value);\n }\n });\n return details.sort();\n }\n\n /**\n * Creates a clone of `wrapper`.\n *\n * @private\n * @param {Object} wrapper The wrapper to clone.\n * @returns {Object} Returns the cloned wrapper.\n */\n function wrapperClone(wrapper) {\n if (wrapper instanceof LazyWrapper) {\n return wrapper.clone();\n }\n var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);\n result.__actions__ = copyArray(wrapper.__actions__);\n result.__index__ = wrapper.__index__;\n result.__values__ = wrapper.__values__;\n return result;\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an array of elements split into groups the length of `size`.\n * If `array` can't be split evenly, the final chunk will be the remaining\n * elements.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to process.\n * @param {number} [size=1] The length of each chunk\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the new array of chunks.\n * @example\n *\n * _.chunk(['a', 'b', 'c', 'd'], 2);\n * // => [['a', 'b'], ['c', 'd']]\n *\n * _.chunk(['a', 'b', 'c', 'd'], 3);\n * // => [['a', 'b', 'c'], ['d']]\n */\n function chunk(array, size, guard) {\n if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {\n size = 1;\n } else {\n size = nativeMax(toInteger(size), 0);\n }\n var length = array == null ? 0 : array.length;\n if (!length || size < 1) {\n return [];\n }\n var index = 0,\n resIndex = 0,\n result = Array(nativeCeil(length / size));\n\n while (index < length) {\n result[resIndex++] = baseSlice(array, index, (index += size));\n }\n return result;\n }\n\n /**\n * Creates an array with all falsey values removed. The values `false`, `null`,\n * `0`, `\"\"`, `undefined`, and `NaN` are falsey.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to compact.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.compact([0, 1, false, 2, '', 3]);\n * // => [1, 2, 3]\n */\n function compact(array) {\n var index = -1,\n length = array == null ? 0 : array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n if (value) {\n result[resIndex++] = value;\n }\n }\n return result;\n }\n\n /**\n * Creates a new array concatenating `array` with any additional arrays\n * and/or values.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to concatenate.\n * @param {...*} [values] The values to concatenate.\n * @returns {Array} Returns the new concatenated array.\n * @example\n *\n * var array = [1];\n * var other = _.concat(array, 2, [3], [[4]]);\n *\n * console.log(other);\n * // => [1, 2, 3, [4]]\n *\n * console.log(array);\n * // => [1]\n */\n function concat() {\n var length = arguments.length;\n if (!length) {\n return [];\n }\n var args = Array(length - 1),\n array = arguments[0],\n index = length;\n\n while (index--) {\n args[index - 1] = arguments[index];\n }\n return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));\n }\n\n /**\n * Creates an array of `array` values not included in the other given arrays\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. The order and references of result values are\n * determined by the first array.\n *\n * **Note:** Unlike `_.pullAll`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.without, _.xor\n * @example\n *\n * _.difference([2, 1], [2, 3]);\n * // => [1]\n */\n var difference = baseRest(function(array, values) {\n return isArrayLikeObject(array)\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))\n : [];\n });\n\n /**\n * This method is like `_.difference` except that it accepts `iteratee` which\n * is invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. The order and references of result values are\n * determined by the first array. The iteratee is invoked with one argument:\n * (value).\n *\n * **Note:** Unlike `_.pullAllBy`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\n var differenceBy = baseRest(function(array, values) {\n var iteratee = last(values);\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n return isArrayLikeObject(array)\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))\n : [];\n });\n\n /**\n * This method is like `_.difference` except that it accepts `comparator`\n * which is invoked to compare elements of `array` to `values`. The order and\n * references of result values are determined by the first array. The comparator\n * is invoked with two arguments: (arrVal, othVal).\n *\n * **Note:** Unlike `_.pullAllWith`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n *\n * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }]\n */\n var differenceWith = baseRest(function(array, values) {\n var comparator = last(values);\n if (isArrayLikeObject(comparator)) {\n comparator = undefined;\n }\n return isArrayLikeObject(array)\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)\n : [];\n });\n\n /**\n * Creates a slice of `array` with `n` elements dropped from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.drop([1, 2, 3]);\n * // => [2, 3]\n *\n * _.drop([1, 2, 3], 2);\n * // => [3]\n *\n * _.drop([1, 2, 3], 5);\n * // => []\n *\n * _.drop([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\n function drop(array, n, guard) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n return baseSlice(array, n < 0 ? 0 : n, length);\n }\n\n /**\n * Creates a slice of `array` with `n` elements dropped from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.dropRight([1, 2, 3]);\n * // => [1, 2]\n *\n * _.dropRight([1, 2, 3], 2);\n * // => [1]\n *\n * _.dropRight([1, 2, 3], 5);\n * // => []\n *\n * _.dropRight([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\n function dropRight(array, n, guard) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n n = length - n;\n return baseSlice(array, 0, n < 0 ? 0 : n);\n }\n\n /**\n * Creates a slice of `array` excluding elements dropped from the end.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.dropRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropRightWhile(users, ['active', false]);\n * // => objects for ['barney']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropRightWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\n function dropRightWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3), true, true)\n : [];\n }\n\n /**\n * Creates a slice of `array` excluding elements dropped from the beginning.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.dropWhile(users, function(o) { return !o.active; });\n * // => objects for ['pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropWhile(users, ['active', false]);\n * // => objects for ['pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\n function dropWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3), true)\n : [];\n }\n\n /**\n * Fills elements of `array` with `value` from `start` up to, but not\n * including, `end`.\n *\n * **Note:** This method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.2.0\n * @category Array\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.fill(array, 'a');\n * console.log(array);\n * // => ['a', 'a', 'a']\n *\n * _.fill(Array(3), 2);\n * // => [2, 2, 2]\n *\n * _.fill([4, 6, 8, 10], '*', 1, 3);\n * // => [4, '*', '*', 10]\n */\n function fill(array, value, start, end) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {\n start = 0;\n end = length;\n }\n return baseFill(array, value, start, end);\n }\n\n /**\n * This method is like `_.find` except that it returns the index of the first\n * element `predicate` returns truthy for instead of the element itself.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.findIndex(users, function(o) { return o.user == 'barney'; });\n * // => 0\n *\n * // The `_.matches` iteratee shorthand.\n * _.findIndex(users, { 'user': 'fred', 'active': false });\n * // => 1\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findIndex(users, ['active', false]);\n * // => 0\n *\n * // The `_.property` iteratee shorthand.\n * _.findIndex(users, 'active');\n * // => 2\n */\n function findIndex(array, predicate, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = fromIndex == null ? 0 : toInteger(fromIndex);\n if (index < 0) {\n index = nativeMax(length + index, 0);\n }\n return baseFindIndex(array, getIteratee(predicate, 3), index);\n }\n\n /**\n * This method is like `_.findIndex` except that it iterates over elements\n * of `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=array.length-1] The index to search from.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });\n * // => 2\n *\n * // The `_.matches` iteratee shorthand.\n * _.findLastIndex(users, { 'user': 'barney', 'active': true });\n * // => 0\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findLastIndex(users, ['active', false]);\n * // => 2\n *\n * // The `_.property` iteratee shorthand.\n * _.findLastIndex(users, 'active');\n * // => 0\n */\n function findLastIndex(array, predicate, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = length - 1;\n if (fromIndex !== undefined) {\n index = toInteger(fromIndex);\n index = fromIndex < 0\n ? nativeMax(length + index, 0)\n : nativeMin(index, length - 1);\n }\n return baseFindIndex(array, getIteratee(predicate, 3), index, true);\n }\n\n /**\n * Flattens `array` a single level deep.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flatten([1, [2, [3, [4]], 5]]);\n * // => [1, 2, [3, [4]], 5]\n */\n function flatten(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseFlatten(array, 1) : [];\n }\n\n /**\n * Recursively flattens `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flattenDeep([1, [2, [3, [4]], 5]]);\n * // => [1, 2, 3, 4, 5]\n */\n function flattenDeep(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseFlatten(array, INFINITY) : [];\n }\n\n /**\n * Recursively flatten `array` up to `depth` times.\n *\n * @static\n * @memberOf _\n * @since 4.4.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @param {number} [depth=1] The maximum recursion depth.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * var array = [1, [2, [3, [4]], 5]];\n *\n * _.flattenDepth(array, 1);\n * // => [1, 2, [3, [4]], 5]\n *\n * _.flattenDepth(array, 2);\n * // => [1, 2, 3, [4], 5]\n */\n function flattenDepth(array, depth) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n depth = depth === undefined ? 1 : toInteger(depth);\n return baseFlatten(array, depth);\n }\n\n /**\n * The inverse of `_.toPairs`; this method returns an object composed\n * from key-value `pairs`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} pairs The key-value pairs.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.fromPairs([['a', 1], ['b', 2]]);\n * // => { 'a': 1, 'b': 2 }\n */\n function fromPairs(pairs) {\n var index = -1,\n length = pairs == null ? 0 : pairs.length,\n result = {};\n\n while (++index < length) {\n var pair = pairs[index];\n result[pair[0]] = pair[1];\n }\n return result;\n }\n\n /**\n * Gets the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @alias first\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the first element of `array`.\n * @example\n *\n * _.head([1, 2, 3]);\n * // => 1\n *\n * _.head([]);\n * // => undefined\n */\n function head(array) {\n return (array && array.length) ? array[0] : undefined;\n }\n\n /**\n * Gets the index at which the first occurrence of `value` is found in `array`\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. If `fromIndex` is negative, it's used as the\n * offset from the end of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.indexOf([1, 2, 1, 2], 2);\n * // => 1\n *\n * // Search from the `fromIndex`.\n * _.indexOf([1, 2, 1, 2], 2, 2);\n * // => 3\n */\n function indexOf(array, value, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = fromIndex == null ? 0 : toInteger(fromIndex);\n if (index < 0) {\n index = nativeMax(length + index, 0);\n }\n return baseIndexOf(array, value, index);\n }\n\n /**\n * Gets all but the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.initial([1, 2, 3]);\n * // => [1, 2]\n */\n function initial(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseSlice(array, 0, -1) : [];\n }\n\n /**\n * Creates an array of unique values that are included in all given arrays\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. The order and references of result values are\n * determined by the first array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersection([2, 1], [2, 3]);\n * // => [2]\n */\n var intersection = baseRest(function(arrays) {\n var mapped = arrayMap(arrays, castArrayLikeObject);\n return (mapped.length && mapped[0] === arrays[0])\n ? baseIntersection(mapped)\n : [];\n });\n\n /**\n * This method is like `_.intersection` except that it accepts `iteratee`\n * which is invoked for each element of each `arrays` to generate the criterion\n * by which they're compared. The order and references of result values are\n * determined by the first array. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [2.1]\n *\n * // The `_.property` iteratee shorthand.\n * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }]\n */\n var intersectionBy = baseRest(function(arrays) {\n var iteratee = last(arrays),\n mapped = arrayMap(arrays, castArrayLikeObject);\n\n if (iteratee === last(mapped)) {\n iteratee = undefined;\n } else {\n mapped.pop();\n }\n return (mapped.length && mapped[0] === arrays[0])\n ? baseIntersection(mapped, getIteratee(iteratee, 2))\n : [];\n });\n\n /**\n * This method is like `_.intersection` except that it accepts `comparator`\n * which is invoked to compare elements of `arrays`. The order and references\n * of result values are determined by the first array. The comparator is\n * invoked with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.intersectionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }]\n */\n var intersectionWith = baseRest(function(arrays) {\n var comparator = last(arrays),\n mapped = arrayMap(arrays, castArrayLikeObject);\n\n comparator = typeof comparator == 'function' ? comparator : undefined;\n if (comparator) {\n mapped.pop();\n }\n return (mapped.length && mapped[0] === arrays[0])\n ? baseIntersection(mapped, undefined, comparator)\n : [];\n });\n\n /**\n * Converts all elements in `array` into a string separated by `separator`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to convert.\n * @param {string} [separator=','] The element separator.\n * @returns {string} Returns the joined string.\n * @example\n *\n * _.join(['a', 'b', 'c'], '~');\n * // => 'a~b~c'\n */\n function join(array, separator) {\n return array == null ? '' : nativeJoin.call(array, separator);\n }\n\n /**\n * Gets the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the last element of `array`.\n * @example\n *\n * _.last([1, 2, 3]);\n * // => 3\n */\n function last(array) {\n var length = array == null ? 0 : array.length;\n return length ? array[length - 1] : undefined;\n }\n\n /**\n * This method is like `_.indexOf` except that it iterates over elements of\n * `array` from right to left.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=array.length-1] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.lastIndexOf([1, 2, 1, 2], 2);\n * // => 3\n *\n * // Search from the `fromIndex`.\n * _.lastIndexOf([1, 2, 1, 2], 2, 2);\n * // => 1\n */\n function lastIndexOf(array, value, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = length;\n if (fromIndex !== undefined) {\n index = toInteger(fromIndex);\n index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);\n }\n return value === value\n ? strictLastIndexOf(array, value, index)\n : baseFindIndex(array, baseIsNaN, index, true);\n }\n\n /**\n * Gets the element at index `n` of `array`. If `n` is negative, the nth\n * element from the end is returned.\n *\n * @static\n * @memberOf _\n * @since 4.11.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=0] The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'd'];\n *\n * _.nth(array, 1);\n * // => 'b'\n *\n * _.nth(array, -2);\n * // => 'c';\n */\n function nth(array, n) {\n return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;\n }\n\n /**\n * Removes all given values from `array` using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`\n * to remove elements from an array by predicate.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...*} [values] The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n *\n * _.pull(array, 'a', 'c');\n * console.log(array);\n * // => ['b', 'b']\n */\n var pull = baseRest(pullAll);\n\n /**\n * This method is like `_.pull` except that it accepts an array of values to remove.\n *\n * **Note:** Unlike `_.difference`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n *\n * _.pullAll(array, ['a', 'c']);\n * console.log(array);\n * // => ['b', 'b']\n */\n function pullAll(array, values) {\n return (array && array.length && values && values.length)\n ? basePullAll(array, values)\n : array;\n }\n\n /**\n * This method is like `_.pullAll` except that it accepts `iteratee` which is\n * invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. The iteratee is invoked with one argument: (value).\n *\n * **Note:** Unlike `_.differenceBy`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];\n *\n * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');\n * console.log(array);\n * // => [{ 'x': 2 }]\n */\n function pullAllBy(array, values, iteratee) {\n return (array && array.length && values && values.length)\n ? basePullAll(array, values, getIteratee(iteratee, 2))\n : array;\n }\n\n /**\n * This method is like `_.pullAll` except that it accepts `comparator` which\n * is invoked to compare elements of `array` to `values`. The comparator is\n * invoked with two arguments: (arrVal, othVal).\n *\n * **Note:** Unlike `_.differenceWith`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];\n *\n * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);\n * console.log(array);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]\n */\n function pullAllWith(array, values, comparator) {\n return (array && array.length && values && values.length)\n ? basePullAll(array, values, undefined, comparator)\n : array;\n }\n\n /**\n * Removes elements from `array` corresponding to `indexes` and returns an\n * array of removed elements.\n *\n * **Note:** Unlike `_.at`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...(number|number[])} [indexes] The indexes of elements to remove.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = ['a', 'b', 'c', 'd'];\n * var pulled = _.pullAt(array, [1, 3]);\n *\n * console.log(array);\n * // => ['a', 'c']\n *\n * console.log(pulled);\n * // => ['b', 'd']\n */\n var pullAt = flatRest(function(array, indexes) {\n var length = array == null ? 0 : array.length,\n result = baseAt(array, indexes);\n\n basePullAt(array, arrayMap(indexes, function(index) {\n return isIndex(index, length) ? +index : index;\n }).sort(compareAscending));\n\n return result;\n });\n\n /**\n * Removes all elements from `array` that `predicate` returns truthy for\n * and returns an array of the removed elements. The predicate is invoked\n * with three arguments: (value, index, array).\n *\n * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`\n * to pull elements from an array by value.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = [1, 2, 3, 4];\n * var evens = _.remove(array, function(n) {\n * return n % 2 == 0;\n * });\n *\n * console.log(array);\n * // => [1, 3]\n *\n * console.log(evens);\n * // => [2, 4]\n */\n function remove(array, predicate) {\n var result = [];\n if (!(array && array.length)) {\n return result;\n }\n var index = -1,\n indexes = [],\n length = array.length;\n\n predicate = getIteratee(predicate, 3);\n while (++index < length) {\n var value = array[index];\n if (predicate(value, index, array)) {\n result.push(value);\n indexes.push(index);\n }\n }\n basePullAt(array, indexes);\n return result;\n }\n\n /**\n * Reverses `array` so that the first element becomes the last, the second\n * element becomes the second to last, and so on.\n *\n * **Note:** This method mutates `array` and is based on\n * [`Array#reverse`](https://mdn.io/Array/reverse).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.reverse(array);\n * // => [3, 2, 1]\n *\n * console.log(array);\n * // => [3, 2, 1]\n */\n function reverse(array) {\n return array == null ? array : nativeReverse.call(array);\n }\n\n /**\n * Creates a slice of `array` from `start` up to, but not including, `end`.\n *\n * **Note:** This method is used instead of\n * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are\n * returned.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\n function slice(array, start, end) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {\n start = 0;\n end = length;\n }\n else {\n start = start == null ? 0 : toInteger(start);\n end = end === undefined ? length : toInteger(end);\n }\n return baseSlice(array, start, end);\n }\n\n /**\n * Uses a binary search to determine the lowest index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * _.sortedIndex([30, 50], 40);\n * // => 1\n */\n function sortedIndex(array, value) {\n return baseSortedIndex(array, value);\n }\n\n /**\n * This method is like `_.sortedIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * var objects = [{ 'x': 4 }, { 'x': 5 }];\n *\n * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n * // => 0\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedIndexBy(objects, { 'x': 4 }, 'x');\n * // => 0\n */\n function sortedIndexBy(array, value, iteratee) {\n return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));\n }\n\n /**\n * This method is like `_.indexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedIndexOf([4, 5, 5, 5, 6], 5);\n * // => 1\n */\n function sortedIndexOf(array, value) {\n var length = array == null ? 0 : array.length;\n if (length) {\n var index = baseSortedIndex(array, value);\n if (index < length && eq(array[index], value)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * This method is like `_.sortedIndex` except that it returns the highest\n * index at which `value` should be inserted into `array` in order to\n * maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * _.sortedLastIndex([4, 5, 5, 5, 6], 5);\n * // => 4\n */\n function sortedLastIndex(array, value) {\n return baseSortedIndex(array, value, true);\n }\n\n /**\n * This method is like `_.sortedLastIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * var objects = [{ 'x': 4 }, { 'x': 5 }];\n *\n * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n * // => 1\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');\n * // => 1\n */\n function sortedLastIndexBy(array, value, iteratee) {\n return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);\n }\n\n /**\n * This method is like `_.lastIndexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);\n * // => 3\n */\n function sortedLastIndexOf(array, value) {\n var length = array == null ? 0 : array.length;\n if (length) {\n var index = baseSortedIndex(array, value, true) - 1;\n if (eq(array[index], value)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * This method is like `_.uniq` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniq([1, 1, 2]);\n * // => [1, 2]\n */\n function sortedUniq(array) {\n return (array && array.length)\n ? baseSortedUniq(array)\n : [];\n }\n\n /**\n * This method is like `_.uniqBy` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);\n * // => [1.1, 2.3]\n */\n function sortedUniqBy(array, iteratee) {\n return (array && array.length)\n ? baseSortedUniq(array, getIteratee(iteratee, 2))\n : [];\n }\n\n /**\n * Gets all but the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.tail([1, 2, 3]);\n * // => [2, 3]\n */\n function tail(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseSlice(array, 1, length) : [];\n }\n\n /**\n * Creates a slice of `array` with `n` elements taken from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.take([1, 2, 3]);\n * // => [1]\n *\n * _.take([1, 2, 3], 2);\n * // => [1, 2]\n *\n * _.take([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.take([1, 2, 3], 0);\n * // => []\n */\n function take(array, n, guard) {\n if (!(array && array.length)) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n return baseSlice(array, 0, n < 0 ? 0 : n);\n }\n\n /**\n * Creates a slice of `array` with `n` elements taken from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.takeRight([1, 2, 3]);\n * // => [3]\n *\n * _.takeRight([1, 2, 3], 2);\n * // => [2, 3]\n *\n * _.takeRight([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.takeRight([1, 2, 3], 0);\n * // => []\n */\n function takeRight(array, n, guard) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n n = length - n;\n return baseSlice(array, n < 0 ? 0 : n, length);\n }\n\n /**\n * Creates a slice of `array` with elements taken from the end. Elements are\n * taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.takeRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeRightWhile(users, ['active', false]);\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeRightWhile(users, 'active');\n * // => []\n */\n function takeRightWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3), false, true)\n : [];\n }\n\n /**\n * Creates a slice of `array` with elements taken from the beginning. Elements\n * are taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.takeWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeWhile(users, ['active', false]);\n * // => objects for ['barney', 'fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeWhile(users, 'active');\n * // => []\n */\n function takeWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3))\n : [];\n }\n\n /**\n * Creates an array of unique values, in order, from all given arrays using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.union([2], [1, 2]);\n * // => [2, 1]\n */\n var union = baseRest(function(arrays) {\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));\n });\n\n /**\n * This method is like `_.union` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which uniqueness is computed. Result values are chosen from the first\n * array in which the value occurs. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.unionBy([2.1], [1.2, 2.3], Math.floor);\n * // => [2.1, 1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\n var unionBy = baseRest(function(arrays) {\n var iteratee = last(arrays);\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));\n });\n\n /**\n * This method is like `_.union` except that it accepts `comparator` which\n * is invoked to compare elements of `arrays`. Result values are chosen from\n * the first array in which the value occurs. The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.unionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\n var unionWith = baseRest(function(arrays) {\n var comparator = last(arrays);\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);\n });\n\n /**\n * Creates a duplicate-free version of an array, using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons, in which only the first occurrence of each element\n * is kept. The order of result values is determined by the order they occur\n * in the array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniq([2, 1, 2]);\n * // => [2, 1]\n */\n function uniq(array) {\n return (array && array.length) ? baseUniq(array) : [];\n }\n\n /**\n * This method is like `_.uniq` except that it accepts `iteratee` which is\n * invoked for each element in `array` to generate the criterion by which\n * uniqueness is computed. The order of result values is determined by the\n * order they occur in the array. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniqBy([2.1, 1.2, 2.3], Math.floor);\n * // => [2.1, 1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\n function uniqBy(array, iteratee) {\n return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];\n }\n\n /**\n * This method is like `_.uniq` except that it accepts `comparator` which\n * is invoked to compare elements of `array`. The order of result values is\n * determined by the order they occur in the array.The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.uniqWith(objects, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]\n */\n function uniqWith(array, comparator) {\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return (array && array.length) ? baseUniq(array, undefined, comparator) : [];\n }\n\n /**\n * This method is like `_.zip` except that it accepts an array of grouped\n * elements and creates an array regrouping the elements to their pre-zip\n * configuration.\n *\n * @static\n * @memberOf _\n * @since 1.2.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);\n * // => [['a', 1, true], ['b', 2, false]]\n *\n * _.unzip(zipped);\n * // => [['a', 'b'], [1, 2], [true, false]]\n */\n function unzip(array) {\n if (!(array && array.length)) {\n return [];\n }\n var length = 0;\n array = arrayFilter(array, function(group) {\n if (isArrayLikeObject(group)) {\n length = nativeMax(group.length, length);\n return true;\n }\n });\n return baseTimes(length, function(index) {\n return arrayMap(array, baseProperty(index));\n });\n }\n\n /**\n * This method is like `_.unzip` except that it accepts `iteratee` to specify\n * how regrouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @param {Function} [iteratee=_.identity] The function to combine\n * regrouped values.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip([1, 2], [10, 20], [100, 200]);\n * // => [[1, 10, 100], [2, 20, 200]]\n *\n * _.unzipWith(zipped, _.add);\n * // => [3, 30, 300]\n */\n function unzipWith(array, iteratee) {\n if (!(array && array.length)) {\n return [];\n }\n var result = unzip(array);\n if (iteratee == null) {\n return result;\n }\n return arrayMap(result, function(group) {\n return apply(iteratee, undefined, group);\n });\n }\n\n /**\n * Creates an array excluding all given values using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * **Note:** Unlike `_.pull`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...*} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.xor\n * @example\n *\n * _.without([2, 1, 2, 3], 1, 2);\n * // => [3]\n */\n var without = baseRest(function(array, values) {\n return isArrayLikeObject(array)\n ? baseDifference(array, values)\n : [];\n });\n\n /**\n * Creates an array of unique values that is the\n * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)\n * of the given arrays. The order of result values is determined by the order\n * they occur in the arrays.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.without\n * @example\n *\n * _.xor([2, 1], [2, 3]);\n * // => [1, 3]\n */\n var xor = baseRest(function(arrays) {\n return baseXor(arrayFilter(arrays, isArrayLikeObject));\n });\n\n /**\n * This method is like `_.xor` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which by which they're compared. The order of result values is determined\n * by the order they occur in the arrays. The iteratee is invoked with one\n * argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [1.2, 3.4]\n *\n * // The `_.property` iteratee shorthand.\n * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\n var xorBy = baseRest(function(arrays) {\n var iteratee = last(arrays);\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));\n });\n\n /**\n * This method is like `_.xor` except that it accepts `comparator` which is\n * invoked to compare elements of `arrays`. The order of result values is\n * determined by the order they occur in the arrays. The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.xorWith(objects, others, _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\n var xorWith = baseRest(function(arrays) {\n var comparator = last(arrays);\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);\n });\n\n /**\n * Creates an array of grouped elements, the first of which contains the\n * first elements of the given arrays, the second of which contains the\n * second elements of the given arrays, and so on.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zip(['a', 'b'], [1, 2], [true, false]);\n * // => [['a', 1, true], ['b', 2, false]]\n */\n var zip = baseRest(unzip);\n\n /**\n * This method is like `_.fromPairs` except that it accepts two arrays,\n * one of property identifiers and one of corresponding values.\n *\n * @static\n * @memberOf _\n * @since 0.4.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObject(['a', 'b'], [1, 2]);\n * // => { 'a': 1, 'b': 2 }\n */\n function zipObject(props, values) {\n return baseZipObject(props || [], values || [], assignValue);\n }\n\n /**\n * This method is like `_.zipObject` except that it supports property paths.\n *\n * @static\n * @memberOf _\n * @since 4.1.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);\n * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }\n */\n function zipObjectDeep(props, values) {\n return baseZipObject(props || [], values || [], baseSet);\n }\n\n /**\n * This method is like `_.zip` except that it accepts `iteratee` to specify\n * how grouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @param {Function} [iteratee=_.identity] The function to combine\n * grouped values.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {\n * return a + b + c;\n * });\n * // => [111, 222]\n */\n var zipWith = baseRest(function(arrays) {\n var length = arrays.length,\n iteratee = length > 1 ? arrays[length - 1] : undefined;\n\n iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;\n return unzipWith(arrays, iteratee);\n });\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a `lodash` wrapper instance that wraps `value` with explicit method\n * chain sequences enabled. The result of such sequences must be unwrapped\n * with `_#value`.\n *\n * @static\n * @memberOf _\n * @since 1.3.0\n * @category Seq\n * @param {*} value The value to wrap.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 40 },\n * { 'user': 'pebbles', 'age': 1 }\n * ];\n *\n * var youngest = _\n * .chain(users)\n * .sortBy('age')\n * .map(function(o) {\n * return o.user + ' is ' + o.age;\n * })\n * .head()\n * .value();\n * // => 'pebbles is 1'\n */\n function chain(value) {\n var result = lodash(value);\n result.__chain__ = true;\n return result;\n }\n\n /**\n * This method invokes `interceptor` and returns `value`. The interceptor\n * is invoked with one argument; (value). The purpose of this method is to\n * \"tap into\" a method chain sequence in order to modify intermediate results.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @param {*} value The value to provide to `interceptor`.\n * @param {Function} interceptor The function to invoke.\n * @returns {*} Returns `value`.\n * @example\n *\n * _([1, 2, 3])\n * .tap(function(array) {\n * // Mutate input array.\n * array.pop();\n * })\n * .reverse()\n * .value();\n * // => [2, 1]\n */\n function tap(value, interceptor) {\n interceptor(value);\n return value;\n }\n\n /**\n * This method is like `_.tap` except that it returns the result of `interceptor`.\n * The purpose of this method is to \"pass thru\" values replacing intermediate\n * results in a method chain sequence.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Seq\n * @param {*} value The value to provide to `interceptor`.\n * @param {Function} interceptor The function to invoke.\n * @returns {*} Returns the result of `interceptor`.\n * @example\n *\n * _(' abc ')\n * .chain()\n * .trim()\n * .thru(function(value) {\n * return [value];\n * })\n * .value();\n * // => ['abc']\n */\n function thru(value, interceptor) {\n return interceptor(value);\n }\n\n /**\n * This method is the wrapper version of `_.at`.\n *\n * @name at\n * @memberOf _\n * @since 1.0.0\n * @category Seq\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n *\n * _(object).at(['a[0].b.c', 'a[1]']).value();\n * // => [3, 4]\n */\n var wrapperAt = flatRest(function(paths) {\n var length = paths.length,\n start = length ? paths[0] : 0,\n value = this.__wrapped__,\n interceptor = function(object) { return baseAt(object, paths); };\n\n if (length > 1 || this.__actions__.length ||\n !(value instanceof LazyWrapper) || !isIndex(start)) {\n return this.thru(interceptor);\n }\n value = value.slice(start, +start + (length ? 1 : 0));\n value.__actions__.push({\n 'func': thru,\n 'args': [interceptor],\n 'thisArg': undefined\n });\n return new LodashWrapper(value, this.__chain__).thru(function(array) {\n if (length && !array.length) {\n array.push(undefined);\n }\n return array;\n });\n });\n\n /**\n * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.\n *\n * @name chain\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 40 }\n * ];\n *\n * // A sequence without explicit chaining.\n * _(users).head();\n * // => { 'user': 'barney', 'age': 36 }\n *\n * // A sequence with explicit chaining.\n * _(users)\n * .chain()\n * .head()\n * .pick('user')\n * .value();\n * // => { 'user': 'barney' }\n */\n function wrapperChain() {\n return chain(this);\n }\n\n /**\n * Executes the chain sequence and returns the wrapped result.\n *\n * @name commit\n * @memberOf _\n * @since 3.2.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var array = [1, 2];\n * var wrapped = _(array).push(3);\n *\n * console.log(array);\n * // => [1, 2]\n *\n * wrapped = wrapped.commit();\n * console.log(array);\n * // => [1, 2, 3]\n *\n * wrapped.last();\n * // => 3\n *\n * console.log(array);\n * // => [1, 2, 3]\n */\n function wrapperCommit() {\n return new LodashWrapper(this.value(), this.__chain__);\n }\n\n /**\n * Gets the next value on a wrapped object following the\n * [iterator protocol](https://mdn.io/iteration_protocols#iterator).\n *\n * @name next\n * @memberOf _\n * @since 4.0.0\n * @category Seq\n * @returns {Object} Returns the next iterator value.\n * @example\n *\n * var wrapped = _([1, 2]);\n *\n * wrapped.next();\n * // => { 'done': false, 'value': 1 }\n *\n * wrapped.next();\n * // => { 'done': false, 'value': 2 }\n *\n * wrapped.next();\n * // => { 'done': true, 'value': undefined }\n */\n function wrapperNext() {\n if (this.__values__ === undefined) {\n this.__values__ = toArray(this.value());\n }\n var done = this.__index__ >= this.__values__.length,\n value = done ? undefined : this.__values__[this.__index__++];\n\n return { 'done': done, 'value': value };\n }\n\n /**\n * Enables the wrapper to be iterable.\n *\n * @name Symbol.iterator\n * @memberOf _\n * @since 4.0.0\n * @category Seq\n * @returns {Object} Returns the wrapper object.\n * @example\n *\n * var wrapped = _([1, 2]);\n *\n * wrapped[Symbol.iterator]() === wrapped;\n * // => true\n *\n * Array.from(wrapped);\n * // => [1, 2]\n */\n function wrapperToIterator() {\n return this;\n }\n\n /**\n * Creates a clone of the chain sequence planting `value` as the wrapped value.\n *\n * @name plant\n * @memberOf _\n * @since 3.2.0\n * @category Seq\n * @param {*} value The value to plant.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var wrapped = _([1, 2]).map(square);\n * var other = wrapped.plant([3, 4]);\n *\n * other.value();\n * // => [9, 16]\n *\n * wrapped.value();\n * // => [1, 4]\n */\n function wrapperPlant(value) {\n var result,\n parent = this;\n\n while (parent instanceof baseLodash) {\n var clone = wrapperClone(parent);\n clone.__index__ = 0;\n clone.__values__ = undefined;\n if (result) {\n previous.__wrapped__ = clone;\n } else {\n result = clone;\n }\n var previous = clone;\n parent = parent.__wrapped__;\n }\n previous.__wrapped__ = value;\n return result;\n }\n\n /**\n * This method is the wrapper version of `_.reverse`.\n *\n * **Note:** This method mutates the wrapped array.\n *\n * @name reverse\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _(array).reverse().value()\n * // => [3, 2, 1]\n *\n * console.log(array);\n * // => [3, 2, 1]\n */\n function wrapperReverse() {\n var value = this.__wrapped__;\n if (value instanceof LazyWrapper) {\n var wrapped = value;\n if (this.__actions__.length) {\n wrapped = new LazyWrapper(this);\n }\n wrapped = wrapped.reverse();\n wrapped.__actions__.push({\n 'func': thru,\n 'args': [reverse],\n 'thisArg': undefined\n });\n return new LodashWrapper(wrapped, this.__chain__);\n }\n return this.thru(reverse);\n }\n\n /**\n * Executes the chain sequence to resolve the unwrapped value.\n *\n * @name value\n * @memberOf _\n * @since 0.1.0\n * @alias toJSON, valueOf\n * @category Seq\n * @returns {*} Returns the resolved unwrapped value.\n * @example\n *\n * _([1, 2, 3]).value();\n * // => [1, 2, 3]\n */\n function wrapperValue() {\n return baseWrapperValue(this.__wrapped__, this.__actions__);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The corresponding value of\n * each key is the number of times the key was returned by `iteratee`. The\n * iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * _.countBy([6.1, 4.2, 6.3], Math.floor);\n * // => { '4': 1, '6': 2 }\n *\n * // The `_.property` iteratee shorthand.\n * _.countBy(['one', 'two', 'three'], 'length');\n * // => { '3': 2, '5': 1 }\n */\n var countBy = createAggregator(function(result, value, key) {\n if (hasOwnProperty.call(result, key)) {\n ++result[key];\n } else {\n baseAssignValue(result, key, 1);\n }\n });\n\n /**\n * Checks if `predicate` returns truthy for **all** elements of `collection`.\n * Iteration is stopped once `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index|key, collection).\n *\n * **Note:** This method returns `true` for\n * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because\n * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of\n * elements of empty collections.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`.\n * @example\n *\n * _.every([true, 1, null, 'yes'], Boolean);\n * // => false\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': false }\n * ];\n *\n * // The `_.matches` iteratee shorthand.\n * _.every(users, { 'user': 'barney', 'active': false });\n * // => false\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.every(users, ['active', false]);\n * // => true\n *\n * // The `_.property` iteratee shorthand.\n * _.every(users, 'active');\n * // => false\n */\n function every(collection, predicate, guard) {\n var func = isArray(collection) ? arrayEvery : baseEvery;\n if (guard && isIterateeCall(collection, predicate, guard)) {\n predicate = undefined;\n }\n return func(collection, getIteratee(predicate, 3));\n }\n\n /**\n * Iterates over elements of `collection`, returning an array of all elements\n * `predicate` returns truthy for. The predicate is invoked with three\n * arguments: (value, index|key, collection).\n *\n * **Note:** Unlike `_.remove`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n * @see _.reject\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': true },\n * { 'user': 'fred', 'age': 40, 'active': false }\n * ];\n *\n * _.filter(users, function(o) { return !o.active; });\n * // => objects for ['fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.filter(users, { 'age': 36, 'active': true });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.filter(users, ['active', false]);\n * // => objects for ['fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.filter(users, 'active');\n * // => objects for ['barney']\n *\n * // Combining several predicates using `_.overEvery` or `_.overSome`.\n * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));\n * // => objects for ['fred', 'barney']\n */\n function filter(collection, predicate) {\n var func = isArray(collection) ? arrayFilter : baseFilter;\n return func(collection, getIteratee(predicate, 3));\n }\n\n /**\n * Iterates over elements of `collection`, returning the first element\n * `predicate` returns truthy for. The predicate is invoked with three\n * arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {*} Returns the matched element, else `undefined`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': true },\n * { 'user': 'fred', 'age': 40, 'active': false },\n * { 'user': 'pebbles', 'age': 1, 'active': true }\n * ];\n *\n * _.find(users, function(o) { return o.age < 40; });\n * // => object for 'barney'\n *\n * // The `_.matches` iteratee shorthand.\n * _.find(users, { 'age': 1, 'active': true });\n * // => object for 'pebbles'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.find(users, ['active', false]);\n * // => object for 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.find(users, 'active');\n * // => object for 'barney'\n */\n var find = createFind(findIndex);\n\n /**\n * This method is like `_.find` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=collection.length-1] The index to search from.\n * @returns {*} Returns the matched element, else `undefined`.\n * @example\n *\n * _.findLast([1, 2, 3, 4], function(n) {\n * return n % 2 == 1;\n * });\n * // => 3\n */\n var findLast = createFind(findLastIndex);\n\n /**\n * Creates a flattened array of values by running each element in `collection`\n * thru `iteratee` and flattening the mapped results. The iteratee is invoked\n * with three arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [n, n];\n * }\n *\n * _.flatMap([1, 2], duplicate);\n * // => [1, 1, 2, 2]\n */\n function flatMap(collection, iteratee) {\n return baseFlatten(map(collection, iteratee), 1);\n }\n\n /**\n * This method is like `_.flatMap` except that it recursively flattens the\n * mapped results.\n *\n * @static\n * @memberOf _\n * @since 4.7.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [[[n, n]]];\n * }\n *\n * _.flatMapDeep([1, 2], duplicate);\n * // => [1, 1, 2, 2]\n */\n function flatMapDeep(collection, iteratee) {\n return baseFlatten(map(collection, iteratee), INFINITY);\n }\n\n /**\n * This method is like `_.flatMap` except that it recursively flattens the\n * mapped results up to `depth` times.\n *\n * @static\n * @memberOf _\n * @since 4.7.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {number} [depth=1] The maximum recursion depth.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [[[n, n]]];\n * }\n *\n * _.flatMapDepth([1, 2], duplicate, 2);\n * // => [[1, 1], [2, 2]]\n */\n function flatMapDepth(collection, iteratee, depth) {\n depth = depth === undefined ? 1 : toInteger(depth);\n return baseFlatten(map(collection, iteratee), depth);\n }\n\n /**\n * Iterates over elements of `collection` and invokes `iteratee` for each element.\n * The iteratee is invoked with three arguments: (value, index|key, collection).\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * **Note:** As with other \"Collections\" methods, objects with a \"length\"\n * property are iterated like arrays. To avoid this behavior use `_.forIn`\n * or `_.forOwn` for object iteration.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @alias each\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n * @see _.forEachRight\n * @example\n *\n * _.forEach([1, 2], function(value) {\n * console.log(value);\n * });\n * // => Logs `1` then `2`.\n *\n * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n */\n function forEach(collection, iteratee) {\n var func = isArray(collection) ? arrayEach : baseEach;\n return func(collection, getIteratee(iteratee, 3));\n }\n\n /**\n * This method is like `_.forEach` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @alias eachRight\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n * @see _.forEach\n * @example\n *\n * _.forEachRight([1, 2], function(value) {\n * console.log(value);\n * });\n * // => Logs `2` then `1`.\n */\n function forEachRight(collection, iteratee) {\n var func = isArray(collection) ? arrayEachRight : baseEachRight;\n return func(collection, getIteratee(iteratee, 3));\n }\n\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The order of grouped values\n * is determined by the order they occur in `collection`. The corresponding\n * value of each key is an array of elements responsible for generating the\n * key. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * _.groupBy([6.1, 4.2, 6.3], Math.floor);\n * // => { '4': [4.2], '6': [6.1, 6.3] }\n *\n * // The `_.property` iteratee shorthand.\n * _.groupBy(['one', 'two', 'three'], 'length');\n * // => { '3': ['one', 'two'], '5': ['three'] }\n */\n var groupBy = createAggregator(function(result, value, key) {\n if (hasOwnProperty.call(result, key)) {\n result[key].push(value);\n } else {\n baseAssignValue(result, key, [value]);\n }\n });\n\n /**\n * Checks if `value` is in `collection`. If `collection` is a string, it's\n * checked for a substring of `value`, otherwise\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * is used for equality comparisons. If `fromIndex` is negative, it's used as\n * the offset from the end of `collection`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object|string} collection The collection to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=0] The index to search from.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n * @returns {boolean} Returns `true` if `value` is found, else `false`.\n * @example\n *\n * _.includes([1, 2, 3], 1);\n * // => true\n *\n * _.includes([1, 2, 3], 1, 2);\n * // => false\n *\n * _.includes({ 'a': 1, 'b': 2 }, 1);\n * // => true\n *\n * _.includes('abcd', 'bc');\n * // => true\n */\n function includes(collection, value, fromIndex, guard) {\n collection = isArrayLike(collection) ? collection : values(collection);\n fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;\n\n var length = collection.length;\n if (fromIndex < 0) {\n fromIndex = nativeMax(length + fromIndex, 0);\n }\n return isString(collection)\n ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)\n : (!!length && baseIndexOf(collection, value, fromIndex) > -1);\n }\n\n /**\n * Invokes the method at `path` of each element in `collection`, returning\n * an array of the results of each invoked method. Any additional arguments\n * are provided to each invoked method. If `path` is a function, it's invoked\n * for, and `this` bound to, each element in `collection`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Array|Function|string} path The path of the method to invoke or\n * the function invoked per iteration.\n * @param {...*} [args] The arguments to invoke each method with.\n * @returns {Array} Returns the array of results.\n * @example\n *\n * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');\n * // => [[1, 5, 7], [1, 2, 3]]\n *\n * _.invokeMap([123, 456], String.prototype.split, '');\n * // => [['1', '2', '3'], ['4', '5', '6']]\n */\n var invokeMap = baseRest(function(collection, path, args) {\n var index = -1,\n isFunc = typeof path == 'function',\n result = isArrayLike(collection) ? Array(collection.length) : [];\n\n baseEach(collection, function(value) {\n result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);\n });\n return result;\n });\n\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The corresponding value of\n * each key is the last element responsible for generating the key. The\n * iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * var array = [\n * { 'dir': 'left', 'code': 97 },\n * { 'dir': 'right', 'code': 100 }\n * ];\n *\n * _.keyBy(array, function(o) {\n * return String.fromCharCode(o.code);\n * });\n * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }\n *\n * _.keyBy(array, 'dir');\n * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }\n */\n var keyBy = createAggregator(function(result, value, key) {\n baseAssignValue(result, key, value);\n });\n\n /**\n * Creates an array of values by running each element in `collection` thru\n * `iteratee`. The iteratee is invoked with three arguments:\n * (value, index|key, collection).\n *\n * Many lodash methods are guarded to work as iteratees for methods like\n * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.\n *\n * The guarded methods are:\n * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,\n * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,\n * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,\n * `template`, `trim`, `trimEnd`, `trimStart`, and `words`\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * _.map([4, 8], square);\n * // => [16, 64]\n *\n * _.map({ 'a': 4, 'b': 8 }, square);\n * // => [16, 64] (iteration order is not guaranteed)\n *\n * var users = [\n * { 'user': 'barney' },\n * { 'user': 'fred' }\n * ];\n *\n * // The `_.property` iteratee shorthand.\n * _.map(users, 'user');\n * // => ['barney', 'fred']\n */\n function map(collection, iteratee) {\n var func = isArray(collection) ? arrayMap : baseMap;\n return func(collection, getIteratee(iteratee, 3));\n }\n\n /**\n * This method is like `_.sortBy` except that it allows specifying the sort\n * orders of the iteratees to sort by. If `orders` is unspecified, all values\n * are sorted in ascending order. Otherwise, specify an order of \"desc\" for\n * descending or \"asc\" for ascending sort order of corresponding values.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]\n * The iteratees to sort by.\n * @param {string[]} [orders] The sort orders of `iteratees`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n * @returns {Array} Returns the new sorted array.\n * @example\n *\n * var users = [\n * { 'user': 'fred', 'age': 48 },\n * { 'user': 'barney', 'age': 34 },\n * { 'user': 'fred', 'age': 40 },\n * { 'user': 'barney', 'age': 36 }\n * ];\n *\n * // Sort by `user` in ascending order and by `age` in descending order.\n * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);\n * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]\n */\n function orderBy(collection, iteratees, orders, guard) {\n if (collection == null) {\n return [];\n }\n if (!isArray(iteratees)) {\n iteratees = iteratees == null ? [] : [iteratees];\n }\n orders = guard ? undefined : orders;\n if (!isArray(orders)) {\n orders = orders == null ? [] : [orders];\n }\n return baseOrderBy(collection, iteratees, orders);\n }\n\n /**\n * Creates an array of elements split into two groups, the first of which\n * contains elements `predicate` returns truthy for, the second of which\n * contains elements `predicate` returns falsey for. The predicate is\n * invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the array of grouped elements.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': true },\n * { 'user': 'pebbles', 'age': 1, 'active': false }\n * ];\n *\n * _.partition(users, function(o) { return o.active; });\n * // => objects for [['fred'], ['barney', 'pebbles']]\n *\n * // The `_.matches` iteratee shorthand.\n * _.partition(users, { 'age': 1, 'active': false });\n * // => objects for [['pebbles'], ['barney', 'fred']]\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.partition(users, ['active', false]);\n * // => objects for [['barney', 'pebbles'], ['fred']]\n *\n * // The `_.property` iteratee shorthand.\n * _.partition(users, 'active');\n * // => objects for [['fred'], ['barney', 'pebbles']]\n */\n var partition = createAggregator(function(result, value, key) {\n result[key ? 0 : 1].push(value);\n }, function() { return [[], []]; });\n\n /**\n * Reduces `collection` to a value which is the accumulated result of running\n * each element in `collection` thru `iteratee`, where each successive\n * invocation is supplied the return value of the previous. If `accumulator`\n * is not given, the first element of `collection` is used as the initial\n * value. The iteratee is invoked with four arguments:\n * (accumulator, value, index|key, collection).\n *\n * Many lodash methods are guarded to work as iteratees for methods like\n * `_.reduce`, `_.reduceRight`, and `_.transform`.\n *\n * The guarded methods are:\n * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,\n * and `sortBy`\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @returns {*} Returns the accumulated value.\n * @see _.reduceRight\n * @example\n *\n * _.reduce([1, 2], function(sum, n) {\n * return sum + n;\n * }, 0);\n * // => 3\n *\n * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n * (result[value] || (result[value] = [])).push(key);\n * return result;\n * }, {});\n * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)\n */\n function reduce(collection, iteratee, accumulator) {\n var func = isArray(collection) ? arrayReduce : baseReduce,\n initAccum = arguments.length < 3;\n\n return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);\n }\n\n /**\n * This method is like `_.reduce` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @returns {*} Returns the accumulated value.\n * @see _.reduce\n * @example\n *\n * var array = [[0, 1], [2, 3], [4, 5]];\n *\n * _.reduceRight(array, function(flattened, other) {\n * return flattened.concat(other);\n * }, []);\n * // => [4, 5, 2, 3, 0, 1]\n */\n function reduceRight(collection, iteratee, accumulator) {\n var func = isArray(collection) ? arrayReduceRight : baseReduce,\n initAccum = arguments.length < 3;\n\n return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);\n }\n\n /**\n * The opposite of `_.filter`; this method returns the elements of `collection`\n * that `predicate` does **not** return truthy for.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n * @see _.filter\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': true }\n * ];\n *\n * _.reject(users, function(o) { return !o.active; });\n * // => objects for ['fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.reject(users, { 'age': 40, 'active': true });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.reject(users, ['active', false]);\n * // => objects for ['fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.reject(users, 'active');\n * // => objects for ['barney']\n */\n function reject(collection, predicate) {\n var func = isArray(collection) ? arrayFilter : baseFilter;\n return func(collection, negate(getIteratee(predicate, 3)));\n }\n\n /**\n * Gets a random element from `collection`.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to sample.\n * @returns {*} Returns the random element.\n * @example\n *\n * _.sample([1, 2, 3, 4]);\n * // => 2\n */\n function sample(collection) {\n var func = isArray(collection) ? arraySample : baseSample;\n return func(collection);\n }\n\n /**\n * Gets `n` random elements at unique keys from `collection` up to the\n * size of `collection`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to sample.\n * @param {number} [n=1] The number of elements to sample.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the random elements.\n * @example\n *\n * _.sampleSize([1, 2, 3], 2);\n * // => [3, 1]\n *\n * _.sampleSize([1, 2, 3], 4);\n * // => [2, 3, 1]\n */\n function sampleSize(collection, n, guard) {\n if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {\n n = 1;\n } else {\n n = toInteger(n);\n }\n var func = isArray(collection) ? arraySampleSize : baseSampleSize;\n return func(collection, n);\n }\n\n /**\n * Creates an array of shuffled values, using a version of the\n * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to shuffle.\n * @returns {Array} Returns the new shuffled array.\n * @example\n *\n * _.shuffle([1, 2, 3, 4]);\n * // => [4, 1, 3, 2]\n */\n function shuffle(collection) {\n var func = isArray(collection) ? arrayShuffle : baseShuffle;\n return func(collection);\n }\n\n /**\n * Gets the size of `collection` by returning its length for array-like\n * values or the number of own enumerable string keyed properties for objects.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object|string} collection The collection to inspect.\n * @returns {number} Returns the collection size.\n * @example\n *\n * _.size([1, 2, 3]);\n * // => 3\n *\n * _.size({ 'a': 1, 'b': 2 });\n * // => 2\n *\n * _.size('pebbles');\n * // => 7\n */\n function size(collection) {\n if (collection == null) {\n return 0;\n }\n if (isArrayLike(collection)) {\n return isString(collection) ? stringSize(collection) : collection.length;\n }\n var tag = getTag(collection);\n if (tag == mapTag || tag == setTag) {\n return collection.size;\n }\n return baseKeys(collection).length;\n }\n\n /**\n * Checks if `predicate` returns truthy for **any** element of `collection`.\n * Iteration is stopped once `predicate` returns truthy. The predicate is\n * invoked with three arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n * @example\n *\n * _.some([null, 0, 'yes', false], Boolean);\n * // => true\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false }\n * ];\n *\n * // The `_.matches` iteratee shorthand.\n * _.some(users, { 'user': 'barney', 'active': false });\n * // => false\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.some(users, ['active', false]);\n * // => true\n *\n * // The `_.property` iteratee shorthand.\n * _.some(users, 'active');\n * // => true\n */\n function some(collection, predicate, guard) {\n var func = isArray(collection) ? arraySome : baseSome;\n if (guard && isIterateeCall(collection, predicate, guard)) {\n predicate = undefined;\n }\n return func(collection, getIteratee(predicate, 3));\n }\n\n /**\n * Creates an array of elements, sorted in ascending order by the results of\n * running each element in a collection thru each iteratee. This method\n * performs a stable sort, that is, it preserves the original sort order of\n * equal elements. The iteratees are invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {...(Function|Function[])} [iteratees=[_.identity]]\n * The iteratees to sort by.\n * @returns {Array} Returns the new sorted array.\n * @example\n *\n * var users = [\n * { 'user': 'fred', 'age': 48 },\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 30 },\n * { 'user': 'barney', 'age': 34 }\n * ];\n *\n * _.sortBy(users, [function(o) { return o.user; }]);\n * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]\n *\n * _.sortBy(users, ['user', 'age']);\n * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]]\n */\n var sortBy = baseRest(function(collection, iteratees) {\n if (collection == null) {\n return [];\n }\n var length = iteratees.length;\n if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {\n iteratees = [];\n } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {\n iteratees = [iteratees[0]];\n }\n return baseOrderBy(collection, baseFlatten(iteratees, 1), []);\n });\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Gets the timestamp of the number of milliseconds that have elapsed since\n * the Unix epoch (1 January 1970 00:00:00 UTC).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Date\n * @returns {number} Returns the timestamp.\n * @example\n *\n * _.defer(function(stamp) {\n * console.log(_.now() - stamp);\n * }, _.now());\n * // => Logs the number of milliseconds it took for the deferred invocation.\n */\n var now = ctxNow || function() {\n return root.Date.now();\n };\n\n /*------------------------------------------------------------------------*/\n\n /**\n * The opposite of `_.before`; this method creates a function that invokes\n * `func` once it's called `n` or more times.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {number} n The number of calls before `func` is invoked.\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * var saves = ['profile', 'settings'];\n *\n * var done = _.after(saves.length, function() {\n * console.log('done saving!');\n * });\n *\n * _.forEach(saves, function(type) {\n * asyncSave({ 'type': type, 'complete': done });\n * });\n * // => Logs 'done saving!' after the two async saves have completed.\n */\n function after(n, func) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n n = toInteger(n);\n return function() {\n if (--n < 1) {\n return func.apply(this, arguments);\n }\n };\n }\n\n /**\n * Creates a function that invokes `func`, with up to `n` arguments,\n * ignoring any additional arguments.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to cap arguments for.\n * @param {number} [n=func.length] The arity cap.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new capped function.\n * @example\n *\n * _.map(['6', '8', '10'], _.ary(parseInt, 1));\n * // => [6, 8, 10]\n */\n function ary(func, n, guard) {\n n = guard ? undefined : n;\n n = (func && n == null) ? func.length : n;\n return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);\n }\n\n /**\n * Creates a function that invokes `func`, with the `this` binding and arguments\n * of the created function, while it's called less than `n` times. Subsequent\n * calls to the created function return the result of the last `func` invocation.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {number} n The number of calls at which `func` is no longer invoked.\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * jQuery(element).on('click', _.before(5, addContactToList));\n * // => Allows adding up to 4 contacts to the list.\n */\n function before(n, func) {\n var result;\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n n = toInteger(n);\n return function() {\n if (--n > 0) {\n result = func.apply(this, arguments);\n }\n if (n <= 1) {\n func = undefined;\n }\n return result;\n };\n }\n\n /**\n * Creates a function that invokes `func` with the `this` binding of `thisArg`\n * and `partials` prepended to the arguments it receives.\n *\n * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,\n * may be used as a placeholder for partially applied arguments.\n *\n * **Note:** Unlike native `Function#bind`, this method doesn't set the \"length\"\n * property of bound functions.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to bind.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new bound function.\n * @example\n *\n * function greet(greeting, punctuation) {\n * return greeting + ' ' + this.user + punctuation;\n * }\n *\n * var object = { 'user': 'fred' };\n *\n * var bound = _.bind(greet, object, 'hi');\n * bound('!');\n * // => 'hi fred!'\n *\n * // Bound with placeholders.\n * var bound = _.bind(greet, object, _, '!');\n * bound('hi');\n * // => 'hi fred!'\n */\n var bind = baseRest(function(func, thisArg, partials) {\n var bitmask = WRAP_BIND_FLAG;\n if (partials.length) {\n var holders = replaceHolders(partials, getHolder(bind));\n bitmask |= WRAP_PARTIAL_FLAG;\n }\n return createWrap(func, bitmask, thisArg, partials, holders);\n });\n\n /**\n * Creates a function that invokes the method at `object[key]` with `partials`\n * prepended to the arguments it receives.\n *\n * This method differs from `_.bind` by allowing bound functions to reference\n * methods that may be redefined or don't yet exist. See\n * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)\n * for more details.\n *\n * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * @static\n * @memberOf _\n * @since 0.10.0\n * @category Function\n * @param {Object} object The object to invoke the method on.\n * @param {string} key The key of the method.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new bound function.\n * @example\n *\n * var object = {\n * 'user': 'fred',\n * 'greet': function(greeting, punctuation) {\n * return greeting + ' ' + this.user + punctuation;\n * }\n * };\n *\n * var bound = _.bindKey(object, 'greet', 'hi');\n * bound('!');\n * // => 'hi fred!'\n *\n * object.greet = function(greeting, punctuation) {\n * return greeting + 'ya ' + this.user + punctuation;\n * };\n *\n * bound('!');\n * // => 'hiya fred!'\n *\n * // Bound with placeholders.\n * var bound = _.bindKey(object, 'greet', _, '!');\n * bound('hi');\n * // => 'hiya fred!'\n */\n var bindKey = baseRest(function(object, key, partials) {\n var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;\n if (partials.length) {\n var holders = replaceHolders(partials, getHolder(bindKey));\n bitmask |= WRAP_PARTIAL_FLAG;\n }\n return createWrap(key, bitmask, object, partials, holders);\n });\n\n /**\n * Creates a function that accepts arguments of `func` and either invokes\n * `func` returning its result, if at least `arity` number of arguments have\n * been provided, or returns a function that accepts the remaining `func`\n * arguments, and so on. The arity of `func` may be specified if `func.length`\n * is not sufficient.\n *\n * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,\n * may be used as a placeholder for provided arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of curried functions.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Function\n * @param {Function} func The function to curry.\n * @param {number} [arity=func.length] The arity of `func`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new curried function.\n * @example\n *\n * var abc = function(a, b, c) {\n * return [a, b, c];\n * };\n *\n * var curried = _.curry(abc);\n *\n * curried(1)(2)(3);\n * // => [1, 2, 3]\n *\n * curried(1, 2)(3);\n * // => [1, 2, 3]\n *\n * curried(1, 2, 3);\n * // => [1, 2, 3]\n *\n * // Curried with placeholders.\n * curried(1)(_, 3)(2);\n * // => [1, 2, 3]\n */\n function curry(func, arity, guard) {\n arity = guard ? undefined : arity;\n var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n result.placeholder = curry.placeholder;\n return result;\n }\n\n /**\n * This method is like `_.curry` except that arguments are applied to `func`\n * in the manner of `_.partialRight` instead of `_.partial`.\n *\n * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for provided arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of curried functions.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to curry.\n * @param {number} [arity=func.length] The arity of `func`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new curried function.\n * @example\n *\n * var abc = function(a, b, c) {\n * return [a, b, c];\n * };\n *\n * var curried = _.curryRight(abc);\n *\n * curried(3)(2)(1);\n * // => [1, 2, 3]\n *\n * curried(2, 3)(1);\n * // => [1, 2, 3]\n *\n * curried(1, 2, 3);\n * // => [1, 2, 3]\n *\n * // Curried with placeholders.\n * curried(3)(1, _)(2);\n * // => [1, 2, 3]\n */\n function curryRight(func, arity, guard) {\n arity = guard ? undefined : arity;\n var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n result.placeholder = curryRight.placeholder;\n return result;\n }\n\n /**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked. The debounced function comes with a `cancel` method to cancel\n * delayed `func` invocations and a `flush` method to immediately invoke them.\n * Provide `options` to indicate whether `func` should be invoked on the\n * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n * with the last arguments provided to the debounced function. Subsequent\n * calls to the debounced function return the result of the last `func`\n * invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the debounced function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.debounce` and `_.throttle`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to debounce.\n * @param {number} [wait=0] The number of milliseconds to delay.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=false]\n * Specify invoking on the leading edge of the timeout.\n * @param {number} [options.maxWait]\n * The maximum time `func` is allowed to be delayed before it's invoked.\n * @param {boolean} [options.trailing=true]\n * Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new debounced function.\n * @example\n *\n * // Avoid costly calculations while the window size is in flux.\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n *\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\n * 'leading': true,\n * 'trailing': false\n * }));\n *\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n * var source = new EventSource('/stream');\n * jQuery(source).on('message', debounced);\n *\n * // Cancel the trailing debounced invocation.\n * jQuery(window).on('popstate', debounced.cancel);\n */\n function debounce(func, wait, options) {\n var lastArgs,\n lastThis,\n maxWait,\n result,\n timerId,\n lastCallTime,\n lastInvokeTime = 0,\n leading = false,\n maxing = false,\n trailing = true;\n\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n wait = toNumber(wait) || 0;\n if (isObject(options)) {\n leading = !!options.leading;\n maxing = 'maxWait' in options;\n maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n trailing = 'trailing' in options ? !!options.trailing : trailing;\n }\n\n function invokeFunc(time) {\n var args = lastArgs,\n thisArg = lastThis;\n\n lastArgs = lastThis = undefined;\n lastInvokeTime = time;\n result = func.apply(thisArg, args);\n return result;\n }\n\n function leadingEdge(time) {\n // Reset any `maxWait` timer.\n lastInvokeTime = time;\n // Start the timer for the trailing edge.\n timerId = setTimeout(timerExpired, wait);\n // Invoke the leading edge.\n return leading ? invokeFunc(time) : result;\n }\n\n function remainingWait(time) {\n var timeSinceLastCall = time - lastCallTime,\n timeSinceLastInvoke = time - lastInvokeTime,\n timeWaiting = wait - timeSinceLastCall;\n\n return maxing\n ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)\n : timeWaiting;\n }\n\n function shouldInvoke(time) {\n var timeSinceLastCall = time - lastCallTime,\n timeSinceLastInvoke = time - lastInvokeTime;\n\n // Either this is the first call, activity has stopped and we're at the\n // trailing edge, the system time has gone backwards and we're treating\n // it as the trailing edge, or we've hit the `maxWait` limit.\n return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||\n (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n }\n\n function timerExpired() {\n var time = now();\n if (shouldInvoke(time)) {\n return trailingEdge(time);\n }\n // Restart the timer.\n timerId = setTimeout(timerExpired, remainingWait(time));\n }\n\n function trailingEdge(time) {\n timerId = undefined;\n\n // Only invoke if we have `lastArgs` which means `func` has been\n // debounced at least once.\n if (trailing && lastArgs) {\n return invokeFunc(time);\n }\n lastArgs = lastThis = undefined;\n return result;\n }\n\n function cancel() {\n if (timerId !== undefined) {\n clearTimeout(timerId);\n }\n lastInvokeTime = 0;\n lastArgs = lastCallTime = lastThis = timerId = undefined;\n }\n\n function flush() {\n return timerId === undefined ? result : trailingEdge(now());\n }\n\n function debounced() {\n var time = now(),\n isInvoking = shouldInvoke(time);\n\n lastArgs = arguments;\n lastThis = this;\n lastCallTime = time;\n\n if (isInvoking) {\n if (timerId === undefined) {\n return leadingEdge(lastCallTime);\n }\n if (maxing) {\n // Handle invocations in a tight loop.\n clearTimeout(timerId);\n timerId = setTimeout(timerExpired, wait);\n return invokeFunc(lastCallTime);\n }\n }\n if (timerId === undefined) {\n timerId = setTimeout(timerExpired, wait);\n }\n return result;\n }\n debounced.cancel = cancel;\n debounced.flush = flush;\n return debounced;\n }\n\n /**\n * Defers invoking the `func` until the current call stack has cleared. Any\n * additional arguments are provided to `func` when it's invoked.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to defer.\n * @param {...*} [args] The arguments to invoke `func` with.\n * @returns {number} Returns the timer id.\n * @example\n *\n * _.defer(function(text) {\n * console.log(text);\n * }, 'deferred');\n * // => Logs 'deferred' after one millisecond.\n */\n var defer = baseRest(function(func, args) {\n return baseDelay(func, 1, args);\n });\n\n /**\n * Invokes `func` after `wait` milliseconds. Any additional arguments are\n * provided to `func` when it's invoked.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @param {...*} [args] The arguments to invoke `func` with.\n * @returns {number} Returns the timer id.\n * @example\n *\n * _.delay(function(text) {\n * console.log(text);\n * }, 1000, 'later');\n * // => Logs 'later' after one second.\n */\n var delay = baseRest(function(func, wait, args) {\n return baseDelay(func, toNumber(wait) || 0, args);\n });\n\n /**\n * Creates a function that invokes `func` with arguments reversed.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to flip arguments for.\n * @returns {Function} Returns the new flipped function.\n * @example\n *\n * var flipped = _.flip(function() {\n * return _.toArray(arguments);\n * });\n *\n * flipped('a', 'b', 'c', 'd');\n * // => ['d', 'c', 'b', 'a']\n */\n function flip(func) {\n return createWrap(func, WRAP_FLIP_FLAG);\n }\n\n /**\n * Creates a function that memoizes the result of `func`. If `resolver` is\n * provided, it determines the cache key for storing the result based on the\n * arguments provided to the memoized function. By default, the first argument\n * provided to the memoized function is used as the map cache key. The `func`\n * is invoked with the `this` binding of the memoized function.\n *\n * **Note:** The cache is exposed as the `cache` property on the memoized\n * function. Its creation may be customized by replacing the `_.memoize.Cache`\n * constructor with one whose instances implement the\n * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)\n * method interface of `clear`, `delete`, `get`, `has`, and `set`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to have its output memoized.\n * @param {Function} [resolver] The function to resolve the cache key.\n * @returns {Function} Returns the new memoized function.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n * var other = { 'c': 3, 'd': 4 };\n *\n * var values = _.memoize(_.values);\n * values(object);\n * // => [1, 2]\n *\n * values(other);\n * // => [3, 4]\n *\n * object.a = 2;\n * values(object);\n * // => [1, 2]\n *\n * // Modify the result cache.\n * values.cache.set(object, ['a', 'b']);\n * values(object);\n * // => ['a', 'b']\n *\n * // Replace `_.memoize.Cache`.\n * _.memoize.Cache = WeakMap;\n */\n function memoize(func, resolver) {\n if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n var memoized = function() {\n var args = arguments,\n key = resolver ? resolver.apply(this, args) : args[0],\n cache = memoized.cache;\n\n if (cache.has(key)) {\n return cache.get(key);\n }\n var result = func.apply(this, args);\n memoized.cache = cache.set(key, result) || cache;\n return result;\n };\n memoized.cache = new (memoize.Cache || MapCache);\n return memoized;\n }\n\n // Expose `MapCache`.\n memoize.Cache = MapCache;\n\n /**\n * Creates a function that negates the result of the predicate `func`. The\n * `func` predicate is invoked with the `this` binding and arguments of the\n * created function.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} predicate The predicate to negate.\n * @returns {Function} Returns the new negated function.\n * @example\n *\n * function isEven(n) {\n * return n % 2 == 0;\n * }\n *\n * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));\n * // => [1, 3, 5]\n */\n function negate(predicate) {\n if (typeof predicate != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n return function() {\n var args = arguments;\n switch (args.length) {\n case 0: return !predicate.call(this);\n case 1: return !predicate.call(this, args[0]);\n case 2: return !predicate.call(this, args[0], args[1]);\n case 3: return !predicate.call(this, args[0], args[1], args[2]);\n }\n return !predicate.apply(this, args);\n };\n }\n\n /**\n * Creates a function that is restricted to invoking `func` once. Repeat calls\n * to the function return the value of the first invocation. The `func` is\n * invoked with the `this` binding and arguments of the created function.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * var initialize = _.once(createApplication);\n * initialize();\n * initialize();\n * // => `createApplication` is invoked once\n */\n function once(func) {\n return before(2, func);\n }\n\n /**\n * Creates a function that invokes `func` with its arguments transformed.\n *\n * @static\n * @since 4.0.0\n * @memberOf _\n * @category Function\n * @param {Function} func The function to wrap.\n * @param {...(Function|Function[])} [transforms=[_.identity]]\n * The argument transforms.\n * @returns {Function} Returns the new function.\n * @example\n *\n * function doubled(n) {\n * return n * 2;\n * }\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var func = _.overArgs(function(x, y) {\n * return [x, y];\n * }, [square, doubled]);\n *\n * func(9, 3);\n * // => [81, 6]\n *\n * func(10, 5);\n * // => [100, 10]\n */\n var overArgs = castRest(function(func, transforms) {\n transforms = (transforms.length == 1 && isArray(transforms[0]))\n ? arrayMap(transforms[0], baseUnary(getIteratee()))\n : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));\n\n var funcsLength = transforms.length;\n return baseRest(function(args) {\n var index = -1,\n length = nativeMin(args.length, funcsLength);\n\n while (++index < length) {\n args[index] = transforms[index].call(this, args[index]);\n }\n return apply(func, this, args);\n });\n });\n\n /**\n * Creates a function that invokes `func` with `partials` prepended to the\n * arguments it receives. This method is like `_.bind` except it does **not**\n * alter the `this` binding.\n *\n * The `_.partial.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of partially\n * applied functions.\n *\n * @static\n * @memberOf _\n * @since 0.2.0\n * @category Function\n * @param {Function} func The function to partially apply arguments to.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new partially applied function.\n * @example\n *\n * function greet(greeting, name) {\n * return greeting + ' ' + name;\n * }\n *\n * var sayHelloTo = _.partial(greet, 'hello');\n * sayHelloTo('fred');\n * // => 'hello fred'\n *\n * // Partially applied with placeholders.\n * var greetFred = _.partial(greet, _, 'fred');\n * greetFred('hi');\n * // => 'hi fred'\n */\n var partial = baseRest(function(func, partials) {\n var holders = replaceHolders(partials, getHolder(partial));\n return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);\n });\n\n /**\n * This method is like `_.partial` except that partially applied arguments\n * are appended to the arguments it receives.\n *\n * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of partially\n * applied functions.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Function\n * @param {Function} func The function to partially apply arguments to.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new partially applied function.\n * @example\n *\n * function greet(greeting, name) {\n * return greeting + ' ' + name;\n * }\n *\n * var greetFred = _.partialRight(greet, 'fred');\n * greetFred('hi');\n * // => 'hi fred'\n *\n * // Partially applied with placeholders.\n * var sayHelloTo = _.partialRight(greet, 'hello', _);\n * sayHelloTo('fred');\n * // => 'hello fred'\n */\n var partialRight = baseRest(function(func, partials) {\n var holders = replaceHolders(partials, getHolder(partialRight));\n return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);\n });\n\n /**\n * Creates a function that invokes `func` with arguments arranged according\n * to the specified `indexes` where the argument value at the first index is\n * provided as the first argument, the argument value at the second index is\n * provided as the second argument, and so on.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to rearrange arguments for.\n * @param {...(number|number[])} indexes The arranged argument indexes.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var rearged = _.rearg(function(a, b, c) {\n * return [a, b, c];\n * }, [2, 0, 1]);\n *\n * rearged('b', 'c', 'a')\n * // => ['a', 'b', 'c']\n */\n var rearg = flatRest(function(func, indexes) {\n return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);\n });\n\n /**\n * Creates a function that invokes `func` with the `this` binding of the\n * created function and arguments from `start` and beyond provided as\n * an array.\n *\n * **Note:** This method is based on the\n * [rest parameter](https://mdn.io/rest_parameters).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var say = _.rest(function(what, names) {\n * return what + ' ' + _.initial(names).join(', ') +\n * (_.size(names) > 1 ? ', & ' : '') + _.last(names);\n * });\n *\n * say('hello', 'fred', 'barney', 'pebbles');\n * // => 'hello fred, barney, & pebbles'\n */\n function rest(func, start) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n start = start === undefined ? start : toInteger(start);\n return baseRest(func, start);\n }\n\n /**\n * Creates a function that invokes `func` with the `this` binding of the\n * create function and an array of arguments much like\n * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).\n *\n * **Note:** This method is based on the\n * [spread operator](https://mdn.io/spread_operator).\n *\n * @static\n * @memberOf _\n * @since 3.2.0\n * @category Function\n * @param {Function} func The function to spread arguments over.\n * @param {number} [start=0] The start position of the spread.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var say = _.spread(function(who, what) {\n * return who + ' says ' + what;\n * });\n *\n * say(['fred', 'hello']);\n * // => 'fred says hello'\n *\n * var numbers = Promise.all([\n * Promise.resolve(40),\n * Promise.resolve(36)\n * ]);\n *\n * numbers.then(_.spread(function(x, y) {\n * return x + y;\n * }));\n * // => a Promise of 76\n */\n function spread(func, start) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n start = start == null ? 0 : nativeMax(toInteger(start), 0);\n return baseRest(function(args) {\n var array = args[start],\n otherArgs = castSlice(args, 0, start);\n\n if (array) {\n arrayPush(otherArgs, array);\n }\n return apply(func, this, otherArgs);\n });\n }\n\n /**\n * Creates a throttled function that only invokes `func` at most once per\n * every `wait` milliseconds. The throttled function comes with a `cancel`\n * method to cancel delayed `func` invocations and a `flush` method to\n * immediately invoke them. Provide `options` to indicate whether `func`\n * should be invoked on the leading and/or trailing edge of the `wait`\n * timeout. The `func` is invoked with the last arguments provided to the\n * throttled function. Subsequent calls to the throttled function return the\n * result of the last `func` invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the throttled function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.throttle` and `_.debounce`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to throttle.\n * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=true]\n * Specify invoking on the leading edge of the timeout.\n * @param {boolean} [options.trailing=true]\n * Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new throttled function.\n * @example\n *\n * // Avoid excessively updating the position while scrolling.\n * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n *\n * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n * jQuery(element).on('click', throttled);\n *\n * // Cancel the trailing throttled invocation.\n * jQuery(window).on('popstate', throttled.cancel);\n */\n function throttle(func, wait, options) {\n var leading = true,\n trailing = true;\n\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n if (isObject(options)) {\n leading = 'leading' in options ? !!options.leading : leading;\n trailing = 'trailing' in options ? !!options.trailing : trailing;\n }\n return debounce(func, wait, {\n 'leading': leading,\n 'maxWait': wait,\n 'trailing': trailing\n });\n }\n\n /**\n * Creates a function that accepts up to one argument, ignoring any\n * additional arguments.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n * @example\n *\n * _.map(['6', '8', '10'], _.unary(parseInt));\n * // => [6, 8, 10]\n */\n function unary(func) {\n return ary(func, 1);\n }\n\n /**\n * Creates a function that provides `value` to `wrapper` as its first\n * argument. Any additional arguments provided to the function are appended\n * to those provided to the `wrapper`. The wrapper is invoked with the `this`\n * binding of the created function.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {*} value The value to wrap.\n * @param {Function} [wrapper=identity] The wrapper function.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var p = _.wrap(_.escape, function(func, text) {\n * return '

' + func(text) + '

';\n * });\n *\n * p('fred, barney, & pebbles');\n * // => '

fred, barney, & pebbles

'\n */\n function wrap(value, wrapper) {\n return partial(castFunction(wrapper), value);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Casts `value` as an array if it's not one.\n *\n * @static\n * @memberOf _\n * @since 4.4.0\n * @category Lang\n * @param {*} value The value to inspect.\n * @returns {Array} Returns the cast array.\n * @example\n *\n * _.castArray(1);\n * // => [1]\n *\n * _.castArray({ 'a': 1 });\n * // => [{ 'a': 1 }]\n *\n * _.castArray('abc');\n * // => ['abc']\n *\n * _.castArray(null);\n * // => [null]\n *\n * _.castArray(undefined);\n * // => [undefined]\n *\n * _.castArray();\n * // => []\n *\n * var array = [1, 2, 3];\n * console.log(_.castArray(array) === array);\n * // => true\n */\n function castArray() {\n if (!arguments.length) {\n return [];\n }\n var value = arguments[0];\n return isArray(value) ? value : [value];\n }\n\n /**\n * Creates a shallow clone of `value`.\n *\n * **Note:** This method is loosely based on the\n * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)\n * and supports cloning arrays, array buffers, booleans, date objects, maps,\n * numbers, `Object` objects, regexes, sets, strings, symbols, and typed\n * arrays. The own enumerable properties of `arguments` objects are cloned\n * as plain objects. An empty object is returned for uncloneable values such\n * as error objects, functions, DOM nodes, and WeakMaps.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to clone.\n * @returns {*} Returns the cloned value.\n * @see _.cloneDeep\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var shallow = _.clone(objects);\n * console.log(shallow[0] === objects[0]);\n * // => true\n */\n function clone(value) {\n return baseClone(value, CLONE_SYMBOLS_FLAG);\n }\n\n /**\n * This method is like `_.clone` except that it accepts `customizer` which\n * is invoked to produce the cloned value. If `customizer` returns `undefined`,\n * cloning is handled by the method instead. The `customizer` is invoked with\n * up to four arguments; (value [, index|key, object, stack]).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to clone.\n * @param {Function} [customizer] The function to customize cloning.\n * @returns {*} Returns the cloned value.\n * @see _.cloneDeepWith\n * @example\n *\n * function customizer(value) {\n * if (_.isElement(value)) {\n * return value.cloneNode(false);\n * }\n * }\n *\n * var el = _.cloneWith(document.body, customizer);\n *\n * console.log(el === document.body);\n * // => false\n * console.log(el.nodeName);\n * // => 'BODY'\n * console.log(el.childNodes.length);\n * // => 0\n */\n function cloneWith(value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseClone(value, CLONE_SYMBOLS_FLAG, customizer);\n }\n\n /**\n * This method is like `_.clone` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @returns {*} Returns the deep cloned value.\n * @see _.clone\n * @example\n *\n * var objects = [{ 'a': 1 }, { 'b': 2 }];\n *\n * var deep = _.cloneDeep(objects);\n * console.log(deep[0] === objects[0]);\n * // => false\n */\n function cloneDeep(value) {\n return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG);\n }\n\n /**\n * This method is like `_.cloneWith` except that it recursively clones `value`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to recursively clone.\n * @param {Function} [customizer] The function to customize cloning.\n * @returns {*} Returns the deep cloned value.\n * @see _.cloneWith\n * @example\n *\n * function customizer(value) {\n * if (_.isElement(value)) {\n * return value.cloneNode(true);\n * }\n * }\n *\n * var el = _.cloneDeepWith(document.body, customizer);\n *\n * console.log(el === document.body);\n * // => false\n * console.log(el.nodeName);\n * // => 'BODY'\n * console.log(el.childNodes.length);\n * // => 20\n */\n function cloneDeepWith(value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseClone(value, CLONE_DEEP_FLAG | CLONE_SYMBOLS_FLAG, customizer);\n }\n\n /**\n * Checks if `object` conforms to `source` by invoking the predicate\n * properties of `source` with the corresponding property values of `object`.\n *\n * **Note:** This method is equivalent to `_.conforms` when `source` is\n * partially applied.\n *\n * @static\n * @memberOf _\n * @since 4.14.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property predicates to conform to.\n * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n *\n * _.conformsTo(object, { 'b': function(n) { return n > 1; } });\n * // => true\n *\n * _.conformsTo(object, { 'b': function(n) { return n > 2; } });\n * // => false\n */\n function conformsTo(object, source) {\n return source == null || baseConformsTo(object, source, keys(source));\n }\n\n /**\n * Performs a\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * comparison between two values to determine if they are equivalent.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.eq(object, object);\n * // => true\n *\n * _.eq(object, other);\n * // => false\n *\n * _.eq('a', 'a');\n * // => true\n *\n * _.eq('a', Object('a'));\n * // => false\n *\n * _.eq(NaN, NaN);\n * // => true\n */\n function eq(value, other) {\n return value === other || (value !== value && other !== other);\n }\n\n /**\n * Checks if `value` is greater than `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is greater than `other`,\n * else `false`.\n * @see _.lt\n * @example\n *\n * _.gt(3, 1);\n * // => true\n *\n * _.gt(3, 3);\n * // => false\n *\n * _.gt(1, 3);\n * // => false\n */\n var gt = createRelationalOperation(baseGt);\n\n /**\n * Checks if `value` is greater than or equal to `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is greater than or equal to\n * `other`, else `false`.\n * @see _.lte\n * @example\n *\n * _.gte(3, 1);\n * // => true\n *\n * _.gte(3, 3);\n * // => true\n *\n * _.gte(1, 3);\n * // => false\n */\n var gte = createRelationalOperation(function(value, other) {\n return value >= other;\n });\n\n /**\n * Checks if `value` is likely an `arguments` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n * else `false`.\n * @example\n *\n * _.isArguments(function() { return arguments; }());\n * // => true\n *\n * _.isArguments([1, 2, 3]);\n * // => false\n */\n var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) {\n return isObjectLike(value) && hasOwnProperty.call(value, 'callee') &&\n !propertyIsEnumerable.call(value, 'callee');\n };\n\n /**\n * Checks if `value` is classified as an `Array` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array, else `false`.\n * @example\n *\n * _.isArray([1, 2, 3]);\n * // => true\n *\n * _.isArray(document.body.children);\n * // => false\n *\n * _.isArray('abc');\n * // => false\n *\n * _.isArray(_.noop);\n * // => false\n */\n var isArray = Array.isArray;\n\n /**\n * Checks if `value` is classified as an `ArrayBuffer` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n * @example\n *\n * _.isArrayBuffer(new ArrayBuffer(2));\n * // => true\n *\n * _.isArrayBuffer(new Array(2));\n * // => false\n */\n var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;\n\n /**\n * Checks if `value` is array-like. A value is considered array-like if it's\n * not a function and has a `value.length` that's an integer greater than or\n * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is array-like, else `false`.\n * @example\n *\n * _.isArrayLike([1, 2, 3]);\n * // => true\n *\n * _.isArrayLike(document.body.children);\n * // => true\n *\n * _.isArrayLike('abc');\n * // => true\n *\n * _.isArrayLike(_.noop);\n * // => false\n */\n function isArrayLike(value) {\n return value != null && isLength(value.length) && !isFunction(value);\n }\n\n /**\n * This method is like `_.isArrayLike` except that it also checks if `value`\n * is an object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array-like object,\n * else `false`.\n * @example\n *\n * _.isArrayLikeObject([1, 2, 3]);\n * // => true\n *\n * _.isArrayLikeObject(document.body.children);\n * // => true\n *\n * _.isArrayLikeObject('abc');\n * // => false\n *\n * _.isArrayLikeObject(_.noop);\n * // => false\n */\n function isArrayLikeObject(value) {\n return isObjectLike(value) && isArrayLike(value);\n }\n\n /**\n * Checks if `value` is classified as a boolean primitive or object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.\n * @example\n *\n * _.isBoolean(false);\n * // => true\n *\n * _.isBoolean(null);\n * // => false\n */\n function isBoolean(value) {\n return value === true || value === false ||\n (isObjectLike(value) && baseGetTag(value) == boolTag);\n }\n\n /**\n * Checks if `value` is a buffer.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.\n * @example\n *\n * _.isBuffer(new Buffer(2));\n * // => true\n *\n * _.isBuffer(new Uint8Array(2));\n * // => false\n */\n var isBuffer = nativeIsBuffer || stubFalse;\n\n /**\n * Checks if `value` is classified as a `Date` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n * @example\n *\n * _.isDate(new Date);\n * // => true\n *\n * _.isDate('Mon April 23 2012');\n * // => false\n */\n var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;\n\n /**\n * Checks if `value` is likely a DOM element.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.\n * @example\n *\n * _.isElement(document.body);\n * // => true\n *\n * _.isElement('');\n * // => false\n */\n function isElement(value) {\n return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);\n }\n\n /**\n * Checks if `value` is an empty object, collection, map, or set.\n *\n * Objects are considered empty if they have no own enumerable string keyed\n * properties.\n *\n * Array-like values such as `arguments` objects, arrays, buffers, strings, or\n * jQuery-like collections are considered empty if they have a `length` of `0`.\n * Similarly, maps and sets are considered empty if they have a `size` of `0`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is empty, else `false`.\n * @example\n *\n * _.isEmpty(null);\n * // => true\n *\n * _.isEmpty(true);\n * // => true\n *\n * _.isEmpty(1);\n * // => true\n *\n * _.isEmpty([1, 2, 3]);\n * // => false\n *\n * _.isEmpty({ 'a': 1 });\n * // => false\n */\n function isEmpty(value) {\n if (value == null) {\n return true;\n }\n if (isArrayLike(value) &&\n (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' ||\n isBuffer(value) || isTypedArray(value) || isArguments(value))) {\n return !value.length;\n }\n var tag = getTag(value);\n if (tag == mapTag || tag == setTag) {\n return !value.size;\n }\n if (isPrototype(value)) {\n return !baseKeys(value).length;\n }\n for (var key in value) {\n if (hasOwnProperty.call(value, key)) {\n return false;\n }\n }\n return true;\n }\n\n /**\n * Performs a deep comparison between two values to determine if they are\n * equivalent.\n *\n * **Note:** This method supports comparing arrays, array buffers, booleans,\n * date objects, error objects, maps, numbers, `Object` objects, regexes,\n * sets, strings, symbols, and typed arrays. `Object` objects are compared\n * by their own, not inherited, enumerable properties. Functions and DOM\n * nodes are compared by strict equality, i.e. `===`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * var object = { 'a': 1 };\n * var other = { 'a': 1 };\n *\n * _.isEqual(object, other);\n * // => true\n *\n * object === other;\n * // => false\n */\n function isEqual(value, other) {\n return baseIsEqual(value, other);\n }\n\n /**\n * This method is like `_.isEqual` except that it accepts `customizer` which\n * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n * are handled by the method instead. The `customizer` is invoked with up to\n * six arguments: (objValue, othValue [, index|key, object, other, stack]).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n * @example\n *\n * function isGreeting(value) {\n * return /^h(?:i|ello)$/.test(value);\n * }\n *\n * function customizer(objValue, othValue) {\n * if (isGreeting(objValue) && isGreeting(othValue)) {\n * return true;\n * }\n * }\n *\n * var array = ['hello', 'goodbye'];\n * var other = ['hi', 'goodbye'];\n *\n * _.isEqualWith(array, other, customizer);\n * // => true\n */\n function isEqualWith(value, other, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n var result = customizer ? customizer(value, other) : undefined;\n return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;\n }\n\n /**\n * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,\n * `SyntaxError`, `TypeError`, or `URIError` object.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an error object, else `false`.\n * @example\n *\n * _.isError(new Error);\n * // => true\n *\n * _.isError(Error);\n * // => false\n */\n function isError(value) {\n if (!isObjectLike(value)) {\n return false;\n }\n var tag = baseGetTag(value);\n return tag == errorTag || tag == domExcTag ||\n (typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value));\n }\n\n /**\n * Checks if `value` is a finite primitive number.\n *\n * **Note:** This method is based on\n * [`Number.isFinite`](https://mdn.io/Number/isFinite).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.\n * @example\n *\n * _.isFinite(3);\n * // => true\n *\n * _.isFinite(Number.MIN_VALUE);\n * // => true\n *\n * _.isFinite(Infinity);\n * // => false\n *\n * _.isFinite('3');\n * // => false\n */\n function isFinite(value) {\n return typeof value == 'number' && nativeIsFinite(value);\n }\n\n /**\n * Checks if `value` is classified as a `Function` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a function, else `false`.\n * @example\n *\n * _.isFunction(_);\n * // => true\n *\n * _.isFunction(/abc/);\n * // => false\n */\n function isFunction(value) {\n if (!isObject(value)) {\n return false;\n }\n // The use of `Object#toString` avoids issues with the `typeof` operator\n // in Safari 9 which returns 'object' for typed arrays and other constructors.\n var tag = baseGetTag(value);\n return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;\n }\n\n /**\n * Checks if `value` is an integer.\n *\n * **Note:** This method is based on\n * [`Number.isInteger`](https://mdn.io/Number/isInteger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an integer, else `false`.\n * @example\n *\n * _.isInteger(3);\n * // => true\n *\n * _.isInteger(Number.MIN_VALUE);\n * // => false\n *\n * _.isInteger(Infinity);\n * // => false\n *\n * _.isInteger('3');\n * // => false\n */\n function isInteger(value) {\n return typeof value == 'number' && value == toInteger(value);\n }\n\n /**\n * Checks if `value` is a valid array-like length.\n *\n * **Note:** This method is loosely based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.\n * @example\n *\n * _.isLength(3);\n * // => true\n *\n * _.isLength(Number.MIN_VALUE);\n * // => false\n *\n * _.isLength(Infinity);\n * // => false\n *\n * _.isLength('3');\n * // => false\n */\n function isLength(value) {\n return typeof value == 'number' &&\n value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;\n }\n\n /**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\n function isObject(value) {\n var type = typeof value;\n return value != null && (type == 'object' || type == 'function');\n }\n\n /**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\n function isObjectLike(value) {\n return value != null && typeof value == 'object';\n }\n\n /**\n * Checks if `value` is classified as a `Map` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n * @example\n *\n * _.isMap(new Map);\n * // => true\n *\n * _.isMap(new WeakMap);\n * // => false\n */\n var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;\n\n /**\n * Performs a partial deep comparison between `object` and `source` to\n * determine if `object` contains equivalent property values.\n *\n * **Note:** This method is equivalent to `_.matches` when `source` is\n * partially applied.\n *\n * Partial comparisons will match empty array and empty object `source`\n * values against any array or object value, respectively. See `_.isEqual`\n * for a list of supported value comparisons.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n *\n * _.isMatch(object, { 'b': 2 });\n * // => true\n *\n * _.isMatch(object, { 'b': 1 });\n * // => false\n */\n function isMatch(object, source) {\n return object === source || baseIsMatch(object, source, getMatchData(source));\n }\n\n /**\n * This method is like `_.isMatch` except that it accepts `customizer` which\n * is invoked to compare values. If `customizer` returns `undefined`, comparisons\n * are handled by the method instead. The `customizer` is invoked with five\n * arguments: (objValue, srcValue, index|key, object, source).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n * @example\n *\n * function isGreeting(value) {\n * return /^h(?:i|ello)$/.test(value);\n * }\n *\n * function customizer(objValue, srcValue) {\n * if (isGreeting(objValue) && isGreeting(srcValue)) {\n * return true;\n * }\n * }\n *\n * var object = { 'greeting': 'hello' };\n * var source = { 'greeting': 'hi' };\n *\n * _.isMatchWith(object, source, customizer);\n * // => true\n */\n function isMatchWith(object, source, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return baseIsMatch(object, source, getMatchData(source), customizer);\n }\n\n /**\n * Checks if `value` is `NaN`.\n *\n * **Note:** This method is based on\n * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as\n * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for\n * `undefined` and other non-number values.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n * @example\n *\n * _.isNaN(NaN);\n * // => true\n *\n * _.isNaN(new Number(NaN));\n * // => true\n *\n * isNaN(undefined);\n * // => true\n *\n * _.isNaN(undefined);\n * // => false\n */\n function isNaN(value) {\n // An `NaN` primitive is the only value that is not equal to itself.\n // Perform the `toStringTag` check first to avoid errors with some\n // ActiveX objects in IE.\n return isNumber(value) && value != +value;\n }\n\n /**\n * Checks if `value` is a pristine native function.\n *\n * **Note:** This method can't reliably detect native functions in the presence\n * of the core-js package because core-js circumvents this kind of detection.\n * Despite multiple requests, the core-js maintainer has made it clear: any\n * attempt to fix the detection will be obstructed. As a result, we're left\n * with little choice but to throw an error. Unfortunately, this also affects\n * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),\n * which rely on core-js.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n * else `false`.\n * @example\n *\n * _.isNative(Array.prototype.push);\n * // => true\n *\n * _.isNative(_);\n * // => false\n */\n function isNative(value) {\n if (isMaskable(value)) {\n throw new Error(CORE_ERROR_TEXT);\n }\n return baseIsNative(value);\n }\n\n /**\n * Checks if `value` is `null`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `null`, else `false`.\n * @example\n *\n * _.isNull(null);\n * // => true\n *\n * _.isNull(void 0);\n * // => false\n */\n function isNull(value) {\n return value === null;\n }\n\n /**\n * Checks if `value` is `null` or `undefined`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is nullish, else `false`.\n * @example\n *\n * _.isNil(null);\n * // => true\n *\n * _.isNil(void 0);\n * // => true\n *\n * _.isNil(NaN);\n * // => false\n */\n function isNil(value) {\n return value == null;\n }\n\n /**\n * Checks if `value` is classified as a `Number` primitive or object.\n *\n * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are\n * classified as numbers, use the `_.isFinite` method.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a number, else `false`.\n * @example\n *\n * _.isNumber(3);\n * // => true\n *\n * _.isNumber(Number.MIN_VALUE);\n * // => true\n *\n * _.isNumber(Infinity);\n * // => true\n *\n * _.isNumber('3');\n * // => false\n */\n function isNumber(value) {\n return typeof value == 'number' ||\n (isObjectLike(value) && baseGetTag(value) == numberTag);\n }\n\n /**\n * Checks if `value` is a plain object, that is, an object created by the\n * `Object` constructor or one with a `[[Prototype]]` of `null`.\n *\n * @static\n * @memberOf _\n * @since 0.8.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * _.isPlainObject(new Foo);\n * // => false\n *\n * _.isPlainObject([1, 2, 3]);\n * // => false\n *\n * _.isPlainObject({ 'x': 0, 'y': 0 });\n * // => true\n *\n * _.isPlainObject(Object.create(null));\n * // => true\n */\n function isPlainObject(value) {\n if (!isObjectLike(value) || baseGetTag(value) != objectTag) {\n return false;\n }\n var proto = getPrototype(value);\n if (proto === null) {\n return true;\n }\n var Ctor = hasOwnProperty.call(proto, 'constructor') && proto.constructor;\n return typeof Ctor == 'function' && Ctor instanceof Ctor &&\n funcToString.call(Ctor) == objectCtorString;\n }\n\n /**\n * Checks if `value` is classified as a `RegExp` object.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n * @example\n *\n * _.isRegExp(/abc/);\n * // => true\n *\n * _.isRegExp('/abc/');\n * // => false\n */\n var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;\n\n /**\n * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754\n * double precision number which isn't the result of a rounded unsafe integer.\n *\n * **Note:** This method is based on\n * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.\n * @example\n *\n * _.isSafeInteger(3);\n * // => true\n *\n * _.isSafeInteger(Number.MIN_VALUE);\n * // => false\n *\n * _.isSafeInteger(Infinity);\n * // => false\n *\n * _.isSafeInteger('3');\n * // => false\n */\n function isSafeInteger(value) {\n return isInteger(value) && value >= -MAX_SAFE_INTEGER && value <= MAX_SAFE_INTEGER;\n }\n\n /**\n * Checks if `value` is classified as a `Set` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n * @example\n *\n * _.isSet(new Set);\n * // => true\n *\n * _.isSet(new WeakSet);\n * // => false\n */\n var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;\n\n /**\n * Checks if `value` is classified as a `String` primitive or object.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a string, else `false`.\n * @example\n *\n * _.isString('abc');\n * // => true\n *\n * _.isString(1);\n * // => false\n */\n function isString(value) {\n return typeof value == 'string' ||\n (!isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag);\n }\n\n /**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\n function isSymbol(value) {\n return typeof value == 'symbol' ||\n (isObjectLike(value) && baseGetTag(value) == symbolTag);\n }\n\n /**\n * Checks if `value` is classified as a typed array.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n * @example\n *\n * _.isTypedArray(new Uint8Array);\n * // => true\n *\n * _.isTypedArray([]);\n * // => false\n */\n var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;\n\n /**\n * Checks if `value` is `undefined`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.\n * @example\n *\n * _.isUndefined(void 0);\n * // => true\n *\n * _.isUndefined(null);\n * // => false\n */\n function isUndefined(value) {\n return value === undefined;\n }\n\n /**\n * Checks if `value` is classified as a `WeakMap` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.\n * @example\n *\n * _.isWeakMap(new WeakMap);\n * // => true\n *\n * _.isWeakMap(new Map);\n * // => false\n */\n function isWeakMap(value) {\n return isObjectLike(value) && getTag(value) == weakMapTag;\n }\n\n /**\n * Checks if `value` is classified as a `WeakSet` object.\n *\n * @static\n * @memberOf _\n * @since 4.3.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.\n * @example\n *\n * _.isWeakSet(new WeakSet);\n * // => true\n *\n * _.isWeakSet(new Set);\n * // => false\n */\n function isWeakSet(value) {\n return isObjectLike(value) && baseGetTag(value) == weakSetTag;\n }\n\n /**\n * Checks if `value` is less than `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is less than `other`,\n * else `false`.\n * @see _.gt\n * @example\n *\n * _.lt(1, 3);\n * // => true\n *\n * _.lt(3, 3);\n * // => false\n *\n * _.lt(3, 1);\n * // => false\n */\n var lt = createRelationalOperation(baseLt);\n\n /**\n * Checks if `value` is less than or equal to `other`.\n *\n * @static\n * @memberOf _\n * @since 3.9.0\n * @category Lang\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is less than or equal to\n * `other`, else `false`.\n * @see _.gte\n * @example\n *\n * _.lte(1, 3);\n * // => true\n *\n * _.lte(3, 3);\n * // => true\n *\n * _.lte(3, 1);\n * // => false\n */\n var lte = createRelationalOperation(function(value, other) {\n return value <= other;\n });\n\n /**\n * Converts `value` to an array.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {Array} Returns the converted array.\n * @example\n *\n * _.toArray({ 'a': 1, 'b': 2 });\n * // => [1, 2]\n *\n * _.toArray('abc');\n * // => ['a', 'b', 'c']\n *\n * _.toArray(1);\n * // => []\n *\n * _.toArray(null);\n * // => []\n */\n function toArray(value) {\n if (!value) {\n return [];\n }\n if (isArrayLike(value)) {\n return isString(value) ? stringToArray(value) : copyArray(value);\n }\n if (symIterator && value[symIterator]) {\n return iteratorToArray(value[symIterator]());\n }\n var tag = getTag(value),\n func = tag == mapTag ? mapToArray : (tag == setTag ? setToArray : values);\n\n return func(value);\n }\n\n /**\n * Converts `value` to a finite number.\n *\n * @static\n * @memberOf _\n * @since 4.12.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted number.\n * @example\n *\n * _.toFinite(3.2);\n * // => 3.2\n *\n * _.toFinite(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toFinite(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toFinite('3.2');\n * // => 3.2\n */\n function toFinite(value) {\n if (!value) {\n return value === 0 ? value : 0;\n }\n value = toNumber(value);\n if (value === INFINITY || value === -INFINITY) {\n var sign = (value < 0 ? -1 : 1);\n return sign * MAX_INTEGER;\n }\n return value === value ? value : 0;\n }\n\n /**\n * Converts `value` to an integer.\n *\n * **Note:** This method is loosely based on\n * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toInteger(3.2);\n * // => 3\n *\n * _.toInteger(Number.MIN_VALUE);\n * // => 0\n *\n * _.toInteger(Infinity);\n * // => 1.7976931348623157e+308\n *\n * _.toInteger('3.2');\n * // => 3\n */\n function toInteger(value) {\n var result = toFinite(value),\n remainder = result % 1;\n\n return result === result ? (remainder ? result - remainder : result) : 0;\n }\n\n /**\n * Converts `value` to an integer suitable for use as the length of an\n * array-like object.\n *\n * **Note:** This method is based on\n * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toLength(3.2);\n * // => 3\n *\n * _.toLength(Number.MIN_VALUE);\n * // => 0\n *\n * _.toLength(Infinity);\n * // => 4294967295\n *\n * _.toLength('3.2');\n * // => 3\n */\n function toLength(value) {\n return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH) : 0;\n }\n\n /**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\n function toNumber(value) {\n if (typeof value == 'number') {\n return value;\n }\n if (isSymbol(value)) {\n return NAN;\n }\n if (isObject(value)) {\n var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n value = isObject(other) ? (other + '') : other;\n }\n if (typeof value != 'string') {\n return value === 0 ? value : +value;\n }\n value = value.replace(reTrim, '');\n var isBinary = reIsBinary.test(value);\n return (isBinary || reIsOctal.test(value))\n ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n : (reIsBadHex.test(value) ? NAN : +value);\n }\n\n /**\n * Converts `value` to a plain object flattening inherited enumerable string\n * keyed properties of `value` to own properties of the plain object.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {Object} Returns the converted plain object.\n * @example\n *\n * function Foo() {\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.assign({ 'a': 1 }, new Foo);\n * // => { 'a': 1, 'b': 2 }\n *\n * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));\n * // => { 'a': 1, 'b': 2, 'c': 3 }\n */\n function toPlainObject(value) {\n return copyObject(value, keysIn(value));\n }\n\n /**\n * Converts `value` to a safe integer. A safe integer can be compared and\n * represented correctly.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.toSafeInteger(3.2);\n * // => 3\n *\n * _.toSafeInteger(Number.MIN_VALUE);\n * // => 0\n *\n * _.toSafeInteger(Infinity);\n * // => 9007199254740991\n *\n * _.toSafeInteger('3.2');\n * // => 3\n */\n function toSafeInteger(value) {\n return value\n ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER, MAX_SAFE_INTEGER)\n : (value === 0 ? value : 0);\n }\n\n /**\n * Converts `value` to a string. An empty string is returned for `null`\n * and `undefined` values. The sign of `-0` is preserved.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n * @example\n *\n * _.toString(null);\n * // => ''\n *\n * _.toString(-0);\n * // => '-0'\n *\n * _.toString([1, 2, 3]);\n * // => '1,2,3'\n */\n function toString(value) {\n return value == null ? '' : baseToString(value);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Assigns own enumerable string keyed properties of source objects to the\n * destination object. Source objects are applied from left to right.\n * Subsequent sources overwrite property assignments of previous sources.\n *\n * **Note:** This method mutates `object` and is loosely based on\n * [`Object.assign`](https://mdn.io/Object/assign).\n *\n * @static\n * @memberOf _\n * @since 0.10.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.assignIn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * function Bar() {\n * this.c = 3;\n * }\n *\n * Foo.prototype.b = 2;\n * Bar.prototype.d = 4;\n *\n * _.assign({ 'a': 0 }, new Foo, new Bar);\n * // => { 'a': 1, 'c': 3 }\n */\n var assign = createAssigner(function(object, source) {\n if (isPrototype(source) || isArrayLike(source)) {\n copyObject(source, keys(source), object);\n return;\n }\n for (var key in source) {\n if (hasOwnProperty.call(source, key)) {\n assignValue(object, key, source[key]);\n }\n }\n });\n\n /**\n * This method is like `_.assign` except that it iterates over own and\n * inherited source properties.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias extend\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.assign\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * }\n *\n * function Bar() {\n * this.c = 3;\n * }\n *\n * Foo.prototype.b = 2;\n * Bar.prototype.d = 4;\n *\n * _.assignIn({ 'a': 0 }, new Foo, new Bar);\n * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }\n */\n var assignIn = createAssigner(function(object, source) {\n copyObject(source, keysIn(source), object);\n });\n\n /**\n * This method is like `_.assignIn` except that it accepts `customizer`\n * which is invoked to produce the assigned values. If `customizer` returns\n * `undefined`, assignment is handled by the method instead. The `customizer`\n * is invoked with five arguments: (objValue, srcValue, key, object, source).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias extendWith\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @see _.assignWith\n * @example\n *\n * function customizer(objValue, srcValue) {\n * return _.isUndefined(objValue) ? srcValue : objValue;\n * }\n *\n * var defaults = _.partialRight(_.assignInWith, customizer);\n *\n * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {\n copyObject(source, keysIn(source), object, customizer);\n });\n\n /**\n * This method is like `_.assign` except that it accepts `customizer`\n * which is invoked to produce the assigned values. If `customizer` returns\n * `undefined`, assignment is handled by the method instead. The `customizer`\n * is invoked with five arguments: (objValue, srcValue, key, object, source).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @see _.assignInWith\n * @example\n *\n * function customizer(objValue, srcValue) {\n * return _.isUndefined(objValue) ? srcValue : objValue;\n * }\n *\n * var defaults = _.partialRight(_.assignWith, customizer);\n *\n * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var assignWith = createAssigner(function(object, source, srcIndex, customizer) {\n copyObject(source, keys(source), object, customizer);\n });\n\n /**\n * Creates an array of values corresponding to `paths` of `object`.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Array} Returns the picked values.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n *\n * _.at(object, ['a[0].b.c', 'a[1]']);\n * // => [3, 4]\n */\n var at = flatRest(baseAt);\n\n /**\n * Creates an object that inherits from the `prototype` object. If a\n * `properties` object is given, its own enumerable string keyed properties\n * are assigned to the created object.\n *\n * @static\n * @memberOf _\n * @since 2.3.0\n * @category Object\n * @param {Object} prototype The object to inherit from.\n * @param {Object} [properties] The properties to assign to the object.\n * @returns {Object} Returns the new object.\n * @example\n *\n * function Shape() {\n * this.x = 0;\n * this.y = 0;\n * }\n *\n * function Circle() {\n * Shape.call(this);\n * }\n *\n * Circle.prototype = _.create(Shape.prototype, {\n * 'constructor': Circle\n * });\n *\n * var circle = new Circle;\n * circle instanceof Circle;\n * // => true\n *\n * circle instanceof Shape;\n * // => true\n */\n function create(prototype, properties) {\n var result = baseCreate(prototype);\n return properties == null ? result : baseAssign(result, properties);\n }\n\n /**\n * Assigns own and inherited enumerable string keyed properties of source\n * objects to the destination object for all destination properties that\n * resolve to `undefined`. Source objects are applied from left to right.\n * Once a property is set, additional values of the same property are ignored.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.defaultsDeep\n * @example\n *\n * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });\n * // => { 'a': 1, 'b': 2 }\n */\n var defaults = baseRest(function(object, sources) {\n object = Object(object);\n\n var index = -1;\n var length = sources.length;\n var guard = length > 2 ? sources[2] : undefined;\n\n if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n length = 1;\n }\n\n while (++index < length) {\n var source = sources[index];\n var props = keysIn(source);\n var propsIndex = -1;\n var propsLength = props.length;\n\n while (++propsIndex < propsLength) {\n var key = props[propsIndex];\n var value = object[key];\n\n if (value === undefined ||\n (eq(value, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n object[key] = source[key];\n }\n }\n }\n\n return object;\n });\n\n /**\n * This method is like `_.defaults` except that it recursively assigns\n * default properties.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 3.10.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @see _.defaults\n * @example\n *\n * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });\n * // => { 'a': { 'b': 2, 'c': 3 } }\n */\n var defaultsDeep = baseRest(function(args) {\n args.push(undefined, customDefaultsMerge);\n return apply(mergeWith, undefined, args);\n });\n\n /**\n * This method is like `_.find` except that it returns the key of the first\n * element `predicate` returns truthy for instead of the element itself.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {string|undefined} Returns the key of the matched element,\n * else `undefined`.\n * @example\n *\n * var users = {\n * 'barney': { 'age': 36, 'active': true },\n * 'fred': { 'age': 40, 'active': false },\n * 'pebbles': { 'age': 1, 'active': true }\n * };\n *\n * _.findKey(users, function(o) { return o.age < 40; });\n * // => 'barney' (iteration order is not guaranteed)\n *\n * // The `_.matches` iteratee shorthand.\n * _.findKey(users, { 'age': 1, 'active': true });\n * // => 'pebbles'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findKey(users, ['active', false]);\n * // => 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.findKey(users, 'active');\n * // => 'barney'\n */\n function findKey(object, predicate) {\n return baseFindKey(object, getIteratee(predicate, 3), baseForOwn);\n }\n\n /**\n * This method is like `_.findKey` except that it iterates over elements of\n * a collection in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {string|undefined} Returns the key of the matched element,\n * else `undefined`.\n * @example\n *\n * var users = {\n * 'barney': { 'age': 36, 'active': true },\n * 'fred': { 'age': 40, 'active': false },\n * 'pebbles': { 'age': 1, 'active': true }\n * };\n *\n * _.findLastKey(users, function(o) { return o.age < 40; });\n * // => returns 'pebbles' assuming `_.findKey` returns 'barney'\n *\n * // The `_.matches` iteratee shorthand.\n * _.findLastKey(users, { 'age': 36, 'active': true });\n * // => 'barney'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findLastKey(users, ['active', false]);\n * // => 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.findLastKey(users, 'active');\n * // => 'pebbles'\n */\n function findLastKey(object, predicate) {\n return baseFindKey(object, getIteratee(predicate, 3), baseForOwnRight);\n }\n\n /**\n * Iterates over own and inherited enumerable string keyed properties of an\n * object and invokes `iteratee` for each property. The iteratee is invoked\n * with three arguments: (value, key, object). Iteratee functions may exit\n * iteration early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 0.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forInRight\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forIn(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).\n */\n function forIn(object, iteratee) {\n return object == null\n ? object\n : baseFor(object, getIteratee(iteratee, 3), keysIn);\n }\n\n /**\n * This method is like `_.forIn` except that it iterates over properties of\n * `object` in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forIn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forInRight(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.\n */\n function forInRight(object, iteratee) {\n return object == null\n ? object\n : baseForRight(object, getIteratee(iteratee, 3), keysIn);\n }\n\n /**\n * Iterates over own enumerable string keyed properties of an object and\n * invokes `iteratee` for each property. The iteratee is invoked with three\n * arguments: (value, key, object). Iteratee functions may exit iteration\n * early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 0.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forOwnRight\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forOwn(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n */\n function forOwn(object, iteratee) {\n return object && baseForOwn(object, getIteratee(iteratee, 3));\n }\n\n /**\n * This method is like `_.forOwn` except that it iterates over properties of\n * `object` in the opposite order.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns `object`.\n * @see _.forOwn\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.forOwnRight(new Foo, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.\n */\n function forOwnRight(object, iteratee) {\n return object && baseForOwnRight(object, getIteratee(iteratee, 3));\n }\n\n /**\n * Creates an array of function property names from own enumerable properties\n * of `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to inspect.\n * @returns {Array} Returns the function names.\n * @see _.functionsIn\n * @example\n *\n * function Foo() {\n * this.a = _.constant('a');\n * this.b = _.constant('b');\n * }\n *\n * Foo.prototype.c = _.constant('c');\n *\n * _.functions(new Foo);\n * // => ['a', 'b']\n */\n function functions(object) {\n return object == null ? [] : baseFunctions(object, keys(object));\n }\n\n /**\n * Creates an array of function property names from own and inherited\n * enumerable properties of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to inspect.\n * @returns {Array} Returns the function names.\n * @see _.functions\n * @example\n *\n * function Foo() {\n * this.a = _.constant('a');\n * this.b = _.constant('b');\n * }\n *\n * Foo.prototype.c = _.constant('c');\n *\n * _.functionsIn(new Foo);\n * // => ['a', 'b', 'c']\n */\n function functionsIn(object) {\n return object == null ? [] : baseFunctions(object, keysIn(object));\n }\n\n /**\n * Gets the value at `path` of `object`. If the resolved value is\n * `undefined`, the `defaultValue` is returned in its place.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.get(object, 'a[0].b.c');\n * // => 3\n *\n * _.get(object, ['a', '0', 'b', 'c']);\n * // => 3\n *\n * _.get(object, 'a.b.c', 'default');\n * // => 'default'\n */\n function get(object, path, defaultValue) {\n var result = object == null ? undefined : baseGet(object, path);\n return result === undefined ? defaultValue : result;\n }\n\n /**\n * Checks if `path` is a direct property of `object`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = { 'a': { 'b': 2 } };\n * var other = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.has(object, 'a');\n * // => true\n *\n * _.has(object, 'a.b');\n * // => true\n *\n * _.has(object, ['a', 'b']);\n * // => true\n *\n * _.has(other, 'a');\n * // => false\n */\n function has(object, path) {\n return object != null && hasPath(object, path, baseHas);\n }\n\n /**\n * Checks if `path` is a direct or inherited property of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n * @example\n *\n * var object = _.create({ 'a': _.create({ 'b': 2 }) });\n *\n * _.hasIn(object, 'a');\n * // => true\n *\n * _.hasIn(object, 'a.b');\n * // => true\n *\n * _.hasIn(object, ['a', 'b']);\n * // => true\n *\n * _.hasIn(object, 'b');\n * // => false\n */\n function hasIn(object, path) {\n return object != null && hasPath(object, path, baseHasIn);\n }\n\n /**\n * Creates an object composed of the inverted keys and values of `object`.\n * If `object` contains duplicate values, subsequent values overwrite\n * property assignments of previous values.\n *\n * @static\n * @memberOf _\n * @since 0.7.0\n * @category Object\n * @param {Object} object The object to invert.\n * @returns {Object} Returns the new inverted object.\n * @example\n *\n * var object = { 'a': 1, 'b': 2, 'c': 1 };\n *\n * _.invert(object);\n * // => { '1': 'c', '2': 'b' }\n */\n var invert = createInverter(function(result, value, key) {\n if (value != null &&\n typeof value.toString != 'function') {\n value = nativeObjectToString.call(value);\n }\n\n result[value] = key;\n }, constant(identity));\n\n /**\n * This method is like `_.invert` except that the inverted object is generated\n * from the results of running each element of `object` thru `iteratee`. The\n * corresponding inverted value of each inverted key is an array of keys\n * responsible for generating the inverted value. The iteratee is invoked\n * with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.1.0\n * @category Object\n * @param {Object} object The object to invert.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Object} Returns the new inverted object.\n * @example\n *\n * var object = { 'a': 1, 'b': 2, 'c': 1 };\n *\n * _.invertBy(object);\n * // => { '1': ['a', 'c'], '2': ['b'] }\n *\n * _.invertBy(object, function(value) {\n * return 'group' + value;\n * });\n * // => { 'group1': ['a', 'c'], 'group2': ['b'] }\n */\n var invertBy = createInverter(function(result, value, key) {\n if (value != null &&\n typeof value.toString != 'function') {\n value = nativeObjectToString.call(value);\n }\n\n if (hasOwnProperty.call(result, value)) {\n result[value].push(key);\n } else {\n result[value] = [key];\n }\n }, getIteratee);\n\n /**\n * Invokes the method at `path` of `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the method to invoke.\n * @param {...*} [args] The arguments to invoke the method with.\n * @returns {*} Returns the result of the invoked method.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };\n *\n * _.invoke(object, 'a[0].b.c.slice', 1, 3);\n * // => [2, 3]\n */\n var invoke = baseRest(baseInvoke);\n\n /**\n * Creates an array of the own enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects. See the\n * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * for more details.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keys(new Foo);\n * // => ['a', 'b'] (iteration order is not guaranteed)\n *\n * _.keys('hi');\n * // => ['0', '1']\n */\n function keys(object) {\n return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);\n }\n\n /**\n * Creates an array of the own and inherited enumerable property names of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.keysIn(new Foo);\n * // => ['a', 'b', 'c'] (iteration order is not guaranteed)\n */\n function keysIn(object) {\n return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);\n }\n\n /**\n * The opposite of `_.mapValues`; this method creates an object with the\n * same values as `object` and keys generated by running each own enumerable\n * string keyed property of `object` thru `iteratee`. The iteratee is invoked\n * with three arguments: (value, key, object).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns the new mapped object.\n * @see _.mapValues\n * @example\n *\n * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {\n * return key + value;\n * });\n * // => { 'a1': 1, 'b2': 2 }\n */\n function mapKeys(object, iteratee) {\n var result = {};\n iteratee = getIteratee(iteratee, 3);\n\n baseForOwn(object, function(value, key, object) {\n baseAssignValue(result, iteratee(value, key, object), value);\n });\n return result;\n }\n\n /**\n * Creates an object with the same keys as `object` and values generated\n * by running each own enumerable string keyed property of `object` thru\n * `iteratee`. The iteratee is invoked with three arguments:\n * (value, key, object).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Object} Returns the new mapped object.\n * @see _.mapKeys\n * @example\n *\n * var users = {\n * 'fred': { 'user': 'fred', 'age': 40 },\n * 'pebbles': { 'user': 'pebbles', 'age': 1 }\n * };\n *\n * _.mapValues(users, function(o) { return o.age; });\n * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n *\n * // The `_.property` iteratee shorthand.\n * _.mapValues(users, 'age');\n * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)\n */\n function mapValues(object, iteratee) {\n var result = {};\n iteratee = getIteratee(iteratee, 3);\n\n baseForOwn(object, function(value, key, object) {\n baseAssignValue(result, key, iteratee(value, key, object));\n });\n return result;\n }\n\n /**\n * This method is like `_.assign` except that it recursively merges own and\n * inherited enumerable string keyed properties of source objects into the\n * destination object. Source properties that resolve to `undefined` are\n * skipped if a destination value exists. Array and plain object properties\n * are merged recursively. Other objects and value types are overridden by\n * assignment. Source objects are applied from left to right. Subsequent\n * sources overwrite property assignments of previous sources.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} [sources] The source objects.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {\n * 'a': [{ 'b': 2 }, { 'd': 4 }]\n * };\n *\n * var other = {\n * 'a': [{ 'c': 3 }, { 'e': 5 }]\n * };\n *\n * _.merge(object, other);\n * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }\n */\n var merge = createAssigner(function(object, source, srcIndex) {\n baseMerge(object, source, srcIndex);\n });\n\n /**\n * This method is like `_.merge` except that it accepts `customizer` which\n * is invoked to produce the merged values of the destination and source\n * properties. If `customizer` returns `undefined`, merging is handled by the\n * method instead. The `customizer` is invoked with six arguments:\n * (objValue, srcValue, key, object, source, stack).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The destination object.\n * @param {...Object} sources The source objects.\n * @param {Function} customizer The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * function customizer(objValue, srcValue) {\n * if (_.isArray(objValue)) {\n * return objValue.concat(srcValue);\n * }\n * }\n *\n * var object = { 'a': [1], 'b': [2] };\n * var other = { 'a': [3], 'b': [4] };\n *\n * _.mergeWith(object, other, customizer);\n * // => { 'a': [1, 3], 'b': [2, 4] }\n */\n var mergeWith = createAssigner(function(object, source, srcIndex, customizer) {\n baseMerge(object, source, srcIndex, customizer);\n });\n\n /**\n * The opposite of `_.pick`; this method creates an object composed of the\n * own and inherited enumerable property paths of `object` that are not omitted.\n *\n * **Note:** This method is considerably slower than `_.pick`.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The source object.\n * @param {...(string|string[])} [paths] The property paths to omit.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.omit(object, ['a', 'c']);\n * // => { 'b': '2' }\n */\n var omit = flatRest(function(object, paths) {\n var result = {};\n if (object == null) {\n return result;\n }\n var isDeep = false;\n paths = arrayMap(paths, function(path) {\n path = castPath(path, object);\n isDeep || (isDeep = path.length > 1);\n return path;\n });\n copyObject(object, getAllKeysIn(object), result);\n if (isDeep) {\n result = baseClone(result, CLONE_DEEP_FLAG | CLONE_FLAT_FLAG | CLONE_SYMBOLS_FLAG, customOmitClone);\n }\n var length = paths.length;\n while (length--) {\n baseUnset(result, paths[length]);\n }\n return result;\n });\n\n /**\n * The opposite of `_.pickBy`; this method creates an object composed of\n * the own and inherited enumerable string keyed properties of `object` that\n * `predicate` doesn't return truthy for. The predicate is invoked with two\n * arguments: (value, key).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The source object.\n * @param {Function} [predicate=_.identity] The function invoked per property.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.omitBy(object, _.isNumber);\n * // => { 'b': '2' }\n */\n function omitBy(object, predicate) {\n return pickBy(object, negate(getIteratee(predicate)));\n }\n\n /**\n * Creates an object composed of the picked `object` properties.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The source object.\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.pick(object, ['a', 'c']);\n * // => { 'a': 1, 'c': 3 }\n */\n var pick = flatRest(function(object, paths) {\n return object == null ? {} : basePick(object, paths);\n });\n\n /**\n * Creates an object composed of the `object` properties `predicate` returns\n * truthy for. The predicate is invoked with two arguments: (value, key).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The source object.\n * @param {Function} [predicate=_.identity] The function invoked per property.\n * @returns {Object} Returns the new object.\n * @example\n *\n * var object = { 'a': 1, 'b': '2', 'c': 3 };\n *\n * _.pickBy(object, _.isNumber);\n * // => { 'a': 1, 'c': 3 }\n */\n function pickBy(object, predicate) {\n if (object == null) {\n return {};\n }\n var props = arrayMap(getAllKeysIn(object), function(prop) {\n return [prop];\n });\n predicate = getIteratee(predicate);\n return basePickBy(object, props, function(value, path) {\n return predicate(value, path[0]);\n });\n }\n\n /**\n * This method is like `_.get` except that if the resolved value is a\n * function it's invoked with the `this` binding of its parent object and\n * its result is returned.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to resolve.\n * @param {*} [defaultValue] The value returned for `undefined` resolved values.\n * @returns {*} Returns the resolved value.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };\n *\n * _.result(object, 'a[0].b.c1');\n * // => 3\n *\n * _.result(object, 'a[0].b.c2');\n * // => 4\n *\n * _.result(object, 'a[0].b.c3', 'default');\n * // => 'default'\n *\n * _.result(object, 'a[0].b.c3', _.constant('default'));\n * // => 'default'\n */\n function result(object, path, defaultValue) {\n path = castPath(path, object);\n\n var index = -1,\n length = path.length;\n\n // Ensure the loop is entered when path is empty.\n if (!length) {\n length = 1;\n object = undefined;\n }\n while (++index < length) {\n var value = object == null ? undefined : object[toKey(path[index])];\n if (value === undefined) {\n index = length;\n value = defaultValue;\n }\n object = isFunction(value) ? value.call(object) : value;\n }\n return object;\n }\n\n /**\n * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,\n * it's created. Arrays are created for missing index properties while objects\n * are created for all other missing properties. Use `_.setWith` to customize\n * `path` creation.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 3.7.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.set(object, 'a[0].b.c', 4);\n * console.log(object.a[0].b.c);\n * // => 4\n *\n * _.set(object, ['x', '0', 'y', 'z'], 5);\n * console.log(object.x[0].y.z);\n * // => 5\n */\n function set(object, path, value) {\n return object == null ? object : baseSet(object, path, value);\n }\n\n /**\n * This method is like `_.set` except that it accepts `customizer` which is\n * invoked to produce the objects of `path`. If `customizer` returns `undefined`\n * path creation is handled by the method instead. The `customizer` is invoked\n * with three arguments: (nsValue, key, nsObject).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {};\n *\n * _.setWith(object, '[0][1]', 'a', Object);\n * // => { '0': { '1': 'a' } }\n */\n function setWith(object, path, value, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return object == null ? object : baseSet(object, path, value, customizer);\n }\n\n /**\n * Creates an array of own enumerable string keyed-value pairs for `object`\n * which can be consumed by `_.fromPairs`. If `object` is a map or set, its\n * entries are returned.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias entries\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the key-value pairs.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.toPairs(new Foo);\n * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)\n */\n var toPairs = createToPairs(keys);\n\n /**\n * Creates an array of own and inherited enumerable string keyed-value pairs\n * for `object` which can be consumed by `_.fromPairs`. If `object` is a map\n * or set, its entries are returned.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @alias entriesIn\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the key-value pairs.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.toPairsIn(new Foo);\n * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)\n */\n var toPairsIn = createToPairs(keysIn);\n\n /**\n * An alternative to `_.reduce`; this method transforms `object` to a new\n * `accumulator` object which is the result of running each of its own\n * enumerable string keyed properties thru `iteratee`, with each invocation\n * potentially mutating the `accumulator` object. If `accumulator` is not\n * provided, a new object with the same `[[Prototype]]` will be used. The\n * iteratee is invoked with four arguments: (accumulator, value, key, object).\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * @static\n * @memberOf _\n * @since 1.3.0\n * @category Object\n * @param {Object} object The object to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The custom accumulator value.\n * @returns {*} Returns the accumulated value.\n * @example\n *\n * _.transform([2, 3, 4], function(result, n) {\n * result.push(n *= n);\n * return n % 2 == 0;\n * }, []);\n * // => [4, 9]\n *\n * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n * (result[value] || (result[value] = [])).push(key);\n * }, {});\n * // => { '1': ['a', 'c'], '2': ['b'] }\n */\n function transform(object, iteratee, accumulator) {\n var isArr = isArray(object),\n isArrLike = isArr || isBuffer(object) || isTypedArray(object);\n\n iteratee = getIteratee(iteratee, 4);\n if (accumulator == null) {\n var Ctor = object && object.constructor;\n if (isArrLike) {\n accumulator = isArr ? new Ctor : [];\n }\n else if (isObject(object)) {\n accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};\n }\n else {\n accumulator = {};\n }\n }\n (isArrLike ? arrayEach : baseForOwn)(object, function(value, index, object) {\n return iteratee(accumulator, value, index, object);\n });\n return accumulator;\n }\n\n /**\n * Removes the property at `path` of `object`.\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to unset.\n * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 7 } }] };\n * _.unset(object, 'a[0].b.c');\n * // => true\n *\n * console.log(object);\n * // => { 'a': [{ 'b': {} }] };\n *\n * _.unset(object, ['a', '0', 'b', 'c']);\n * // => true\n *\n * console.log(object);\n * // => { 'a': [{ 'b': {} }] };\n */\n function unset(object, path) {\n return object == null ? true : baseUnset(object, path);\n }\n\n /**\n * This method is like `_.set` except that accepts `updater` to produce the\n * value to set. Use `_.updateWith` to customize `path` creation. The `updater`\n * is invoked with one argument: (value).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {Function} updater The function to produce the updated value.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }] };\n *\n * _.update(object, 'a[0].b.c', function(n) { return n * n; });\n * console.log(object.a[0].b.c);\n * // => 9\n *\n * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });\n * console.log(object.x[0].y.z);\n * // => 0\n */\n function update(object, path, updater) {\n return object == null ? object : baseUpdate(object, path, castFunction(updater));\n }\n\n /**\n * This method is like `_.update` except that it accepts `customizer` which is\n * invoked to produce the objects of `path`. If `customizer` returns `undefined`\n * path creation is handled by the method instead. The `customizer` is invoked\n * with three arguments: (nsValue, key, nsObject).\n *\n * **Note:** This method mutates `object`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Object\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {Function} updater The function to produce the updated value.\n * @param {Function} [customizer] The function to customize assigned values.\n * @returns {Object} Returns `object`.\n * @example\n *\n * var object = {};\n *\n * _.updateWith(object, '[0][1]', _.constant('a'), Object);\n * // => { '0': { '1': 'a' } }\n */\n function updateWith(object, path, updater, customizer) {\n customizer = typeof customizer == 'function' ? customizer : undefined;\n return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);\n }\n\n /**\n * Creates an array of the own enumerable string keyed property values of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property values.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.values(new Foo);\n * // => [1, 2] (iteration order is not guaranteed)\n *\n * _.values('hi');\n * // => ['h', 'i']\n */\n function values(object) {\n return object == null ? [] : baseValues(object, keys(object));\n }\n\n /**\n * Creates an array of the own and inherited enumerable string keyed property\n * values of `object`.\n *\n * **Note:** Non-object values are coerced to objects.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Object\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property values.\n * @example\n *\n * function Foo() {\n * this.a = 1;\n * this.b = 2;\n * }\n *\n * Foo.prototype.c = 3;\n *\n * _.valuesIn(new Foo);\n * // => [1, 2, 3] (iteration order is not guaranteed)\n */\n function valuesIn(object) {\n return object == null ? [] : baseValues(object, keysIn(object));\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Clamps `number` within the inclusive `lower` and `upper` bounds.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Number\n * @param {number} number The number to clamp.\n * @param {number} [lower] The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the clamped number.\n * @example\n *\n * _.clamp(-10, -5, 5);\n * // => -5\n *\n * _.clamp(10, -5, 5);\n * // => 5\n */\n function clamp(number, lower, upper) {\n if (upper === undefined) {\n upper = lower;\n lower = undefined;\n }\n if (upper !== undefined) {\n upper = toNumber(upper);\n upper = upper === upper ? upper : 0;\n }\n if (lower !== undefined) {\n lower = toNumber(lower);\n lower = lower === lower ? lower : 0;\n }\n return baseClamp(toNumber(number), lower, upper);\n }\n\n /**\n * Checks if `n` is between `start` and up to, but not including, `end`. If\n * `end` is not specified, it's set to `start` with `start` then set to `0`.\n * If `start` is greater than `end` the params are swapped to support\n * negative ranges.\n *\n * @static\n * @memberOf _\n * @since 3.3.0\n * @category Number\n * @param {number} number The number to check.\n * @param {number} [start=0] The start of the range.\n * @param {number} end The end of the range.\n * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n * @see _.range, _.rangeRight\n * @example\n *\n * _.inRange(3, 2, 4);\n * // => true\n *\n * _.inRange(4, 8);\n * // => true\n *\n * _.inRange(4, 2);\n * // => false\n *\n * _.inRange(2, 2);\n * // => false\n *\n * _.inRange(1.2, 2);\n * // => true\n *\n * _.inRange(5.2, 4);\n * // => false\n *\n * _.inRange(-3, -2, -6);\n * // => true\n */\n function inRange(number, start, end) {\n start = toFinite(start);\n if (end === undefined) {\n end = start;\n start = 0;\n } else {\n end = toFinite(end);\n }\n number = toNumber(number);\n return baseInRange(number, start, end);\n }\n\n /**\n * Produces a random number between the inclusive `lower` and `upper` bounds.\n * If only one argument is provided a number between `0` and the given number\n * is returned. If `floating` is `true`, or either `lower` or `upper` are\n * floats, a floating-point number is returned instead of an integer.\n *\n * **Note:** JavaScript follows the IEEE-754 standard for resolving\n * floating-point values which can produce unexpected results.\n *\n * @static\n * @memberOf _\n * @since 0.7.0\n * @category Number\n * @param {number} [lower=0] The lower bound.\n * @param {number} [upper=1] The upper bound.\n * @param {boolean} [floating] Specify returning a floating-point number.\n * @returns {number} Returns the random number.\n * @example\n *\n * _.random(0, 5);\n * // => an integer between 0 and 5\n *\n * _.random(5);\n * // => also an integer between 0 and 5\n *\n * _.random(5, true);\n * // => a floating-point number between 0 and 5\n *\n * _.random(1.2, 5.2);\n * // => a floating-point number between 1.2 and 5.2\n */\n function random(lower, upper, floating) {\n if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {\n upper = floating = undefined;\n }\n if (floating === undefined) {\n if (typeof upper == 'boolean') {\n floating = upper;\n upper = undefined;\n }\n else if (typeof lower == 'boolean') {\n floating = lower;\n lower = undefined;\n }\n }\n if (lower === undefined && upper === undefined) {\n lower = 0;\n upper = 1;\n }\n else {\n lower = toFinite(lower);\n if (upper === undefined) {\n upper = lower;\n lower = 0;\n } else {\n upper = toFinite(upper);\n }\n }\n if (lower > upper) {\n var temp = lower;\n lower = upper;\n upper = temp;\n }\n if (floating || lower % 1 || upper % 1) {\n var rand = nativeRandom();\n return nativeMin(lower + (rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1)))), upper);\n }\n return baseRandom(lower, upper);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the camel cased string.\n * @example\n *\n * _.camelCase('Foo Bar');\n * // => 'fooBar'\n *\n * _.camelCase('--foo-bar--');\n * // => 'fooBar'\n *\n * _.camelCase('__FOO_BAR__');\n * // => 'fooBar'\n */\n var camelCase = createCompounder(function(result, word, index) {\n word = word.toLowerCase();\n return result + (index ? capitalize(word) : word);\n });\n\n /**\n * Converts the first character of `string` to upper case and the remaining\n * to lower case.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to capitalize.\n * @returns {string} Returns the capitalized string.\n * @example\n *\n * _.capitalize('FRED');\n * // => 'Fred'\n */\n function capitalize(string) {\n return upperFirst(toString(string).toLowerCase());\n }\n\n /**\n * Deburrs `string` by converting\n * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)\n * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)\n * letters to basic Latin letters and removing\n * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to deburr.\n * @returns {string} Returns the deburred string.\n * @example\n *\n * _.deburr('déjà vu');\n * // => 'deja vu'\n */\n function deburr(string) {\n string = toString(string);\n return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');\n }\n\n /**\n * Checks if `string` ends with the given target string.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to inspect.\n * @param {string} [target] The string to search for.\n * @param {number} [position=string.length] The position to search up to.\n * @returns {boolean} Returns `true` if `string` ends with `target`,\n * else `false`.\n * @example\n *\n * _.endsWith('abc', 'c');\n * // => true\n *\n * _.endsWith('abc', 'b');\n * // => false\n *\n * _.endsWith('abc', 'b', 2);\n * // => true\n */\n function endsWith(string, target, position) {\n string = toString(string);\n target = baseToString(target);\n\n var length = string.length;\n position = position === undefined\n ? length\n : baseClamp(toInteger(position), 0, length);\n\n var end = position;\n position -= target.length;\n return position >= 0 && string.slice(position, end) == target;\n }\n\n /**\n * Converts the characters \"&\", \"<\", \">\", '\"', and \"'\" in `string` to their\n * corresponding HTML entities.\n *\n * **Note:** No other characters are escaped. To escape additional\n * characters use a third-party library like [_he_](https://mths.be/he).\n *\n * Though the \">\" character is escaped for symmetry, characters like\n * \">\" and \"/\" don't need escaping in HTML and have no special meaning\n * unless they're part of a tag or unquoted attribute value. See\n * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)\n * (under \"semi-related fun fact\") for more details.\n *\n * When working with HTML you should always\n * [quote attribute values](http://wonko.com/post/html-escaping) to reduce\n * XSS vectors.\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category String\n * @param {string} [string=''] The string to escape.\n * @returns {string} Returns the escaped string.\n * @example\n *\n * _.escape('fred, barney, & pebbles');\n * // => 'fred, barney, & pebbles'\n */\n function escape(string) {\n string = toString(string);\n return (string && reHasUnescapedHtml.test(string))\n ? string.replace(reUnescapedHtml, escapeHtmlChar)\n : string;\n }\n\n /**\n * Escapes the `RegExp` special characters \"^\", \"$\", \"\\\", \".\", \"*\", \"+\",\n * \"?\", \"(\", \")\", \"[\", \"]\", \"{\", \"}\", and \"|\" in `string`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to escape.\n * @returns {string} Returns the escaped string.\n * @example\n *\n * _.escapeRegExp('[lodash](https://lodash.com/)');\n * // => '\\[lodash\\]\\(https://lodash\\.com/\\)'\n */\n function escapeRegExp(string) {\n string = toString(string);\n return (string && reHasRegExpChar.test(string))\n ? string.replace(reRegExpChar, '\\\\$&')\n : string;\n }\n\n /**\n * Converts `string` to\n * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the kebab cased string.\n * @example\n *\n * _.kebabCase('Foo Bar');\n * // => 'foo-bar'\n *\n * _.kebabCase('fooBar');\n * // => 'foo-bar'\n *\n * _.kebabCase('__FOO_BAR__');\n * // => 'foo-bar'\n */\n var kebabCase = createCompounder(function(result, word, index) {\n return result + (index ? '-' : '') + word.toLowerCase();\n });\n\n /**\n * Converts `string`, as space separated words, to lower case.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the lower cased string.\n * @example\n *\n * _.lowerCase('--Foo-Bar--');\n * // => 'foo bar'\n *\n * _.lowerCase('fooBar');\n * // => 'foo bar'\n *\n * _.lowerCase('__FOO_BAR__');\n * // => 'foo bar'\n */\n var lowerCase = createCompounder(function(result, word, index) {\n return result + (index ? ' ' : '') + word.toLowerCase();\n });\n\n /**\n * Converts the first character of `string` to lower case.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the converted string.\n * @example\n *\n * _.lowerFirst('Fred');\n * // => 'fred'\n *\n * _.lowerFirst('FRED');\n * // => 'fRED'\n */\n var lowerFirst = createCaseFirst('toLowerCase');\n\n /**\n * Pads `string` on the left and right sides if it's shorter than `length`.\n * Padding characters are truncated if they can't be evenly divided by `length`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.pad('abc', 8);\n * // => ' abc '\n *\n * _.pad('abc', 8, '_-');\n * // => '_-abc_-_'\n *\n * _.pad('abc', 3);\n * // => 'abc'\n */\n function pad(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n if (!length || strLength >= length) {\n return string;\n }\n var mid = (length - strLength) / 2;\n return (\n createPadding(nativeFloor(mid), chars) +\n string +\n createPadding(nativeCeil(mid), chars)\n );\n }\n\n /**\n * Pads `string` on the right side if it's shorter than `length`. Padding\n * characters are truncated if they exceed `length`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.padEnd('abc', 6);\n * // => 'abc '\n *\n * _.padEnd('abc', 6, '_-');\n * // => 'abc_-_'\n *\n * _.padEnd('abc', 3);\n * // => 'abc'\n */\n function padEnd(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n return (length && strLength < length)\n ? (string + createPadding(length - strLength, chars))\n : string;\n }\n\n /**\n * Pads `string` on the left side if it's shorter than `length`. Padding\n * characters are truncated if they exceed `length`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to pad.\n * @param {number} [length=0] The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padded string.\n * @example\n *\n * _.padStart('abc', 6);\n * // => ' abc'\n *\n * _.padStart('abc', 6, '_-');\n * // => '_-_abc'\n *\n * _.padStart('abc', 3);\n * // => 'abc'\n */\n function padStart(string, length, chars) {\n string = toString(string);\n length = toInteger(length);\n\n var strLength = length ? stringSize(string) : 0;\n return (length && strLength < length)\n ? (createPadding(length - strLength, chars) + string)\n : string;\n }\n\n /**\n * Converts `string` to an integer of the specified radix. If `radix` is\n * `undefined` or `0`, a `radix` of `10` is used unless `value` is a\n * hexadecimal, in which case a `radix` of `16` is used.\n *\n * **Note:** This method aligns with the\n * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category String\n * @param {string} string The string to convert.\n * @param {number} [radix=10] The radix to interpret `value` by.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {number} Returns the converted integer.\n * @example\n *\n * _.parseInt('08');\n * // => 8\n *\n * _.map(['6', '08', '10'], _.parseInt);\n * // => [6, 8, 10]\n */\n function parseInt(string, radix, guard) {\n if (guard || radix == null) {\n radix = 0;\n } else if (radix) {\n radix = +radix;\n }\n return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);\n }\n\n /**\n * Repeats the given string `n` times.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to repeat.\n * @param {number} [n=1] The number of times to repeat the string.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {string} Returns the repeated string.\n * @example\n *\n * _.repeat('*', 3);\n * // => '***'\n *\n * _.repeat('abc', 2);\n * // => 'abcabc'\n *\n * _.repeat('abc', 0);\n * // => ''\n */\n function repeat(string, n, guard) {\n if ((guard ? isIterateeCall(string, n, guard) : n === undefined)) {\n n = 1;\n } else {\n n = toInteger(n);\n }\n return baseRepeat(toString(string), n);\n }\n\n /**\n * Replaces matches for `pattern` in `string` with `replacement`.\n *\n * **Note:** This method is based on\n * [`String#replace`](https://mdn.io/String/replace).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to modify.\n * @param {RegExp|string} pattern The pattern to replace.\n * @param {Function|string} replacement The match replacement.\n * @returns {string} Returns the modified string.\n * @example\n *\n * _.replace('Hi Fred', 'Fred', 'Barney');\n * // => 'Hi Barney'\n */\n function replace() {\n var args = arguments,\n string = toString(args[0]);\n\n return args.length < 3 ? string : string.replace(args[1], args[2]);\n }\n\n /**\n * Converts `string` to\n * [snake case](https://en.wikipedia.org/wiki/Snake_case).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the snake cased string.\n * @example\n *\n * _.snakeCase('Foo Bar');\n * // => 'foo_bar'\n *\n * _.snakeCase('fooBar');\n * // => 'foo_bar'\n *\n * _.snakeCase('--FOO-BAR--');\n * // => 'foo_bar'\n */\n var snakeCase = createCompounder(function(result, word, index) {\n return result + (index ? '_' : '') + word.toLowerCase();\n });\n\n /**\n * Splits `string` by `separator`.\n *\n * **Note:** This method is based on\n * [`String#split`](https://mdn.io/String/split).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category String\n * @param {string} [string=''] The string to split.\n * @param {RegExp|string} separator The separator pattern to split by.\n * @param {number} [limit] The length to truncate results to.\n * @returns {Array} Returns the string segments.\n * @example\n *\n * _.split('a-b-c', '-', 2);\n * // => ['a', 'b']\n */\n function split(string, separator, limit) {\n if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {\n separator = limit = undefined;\n }\n limit = limit === undefined ? MAX_ARRAY_LENGTH : limit >>> 0;\n if (!limit) {\n return [];\n }\n string = toString(string);\n if (string && (\n typeof separator == 'string' ||\n (separator != null && !isRegExp(separator))\n )) {\n separator = baseToString(separator);\n if (!separator && hasUnicode(string)) {\n return castSlice(stringToArray(string), 0, limit);\n }\n }\n return string.split(separator, limit);\n }\n\n /**\n * Converts `string` to\n * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).\n *\n * @static\n * @memberOf _\n * @since 3.1.0\n * @category String\n * @param {string} [string=''] The string to convert.\n * @returns {string} Returns the start cased string.\n * @example\n *\n * _.startCase('--foo-bar--');\n * // => 'Foo Bar'\n *\n * _.startCase('fooBar');\n * // => 'Foo Bar'\n *\n * _.startCase('__FOO_BAR__');\n * // => 'FOO BAR'\n */\n var startCase = createCompounder(function(result, word, index) {\n return result + (index ? ' ' : '') + upperFirst(word);\n });\n\n /**\n * Checks if `string` starts with the given target string.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category String\n * @param {string} [string=''] The string to inspect.\n * @param {string} [target] The string to search for.\n * @param {number} [position=0] The position to search from.\n * @returns {boolean} Returns `true` if `string` starts with `target`,\n * else `false`.\n * @example\n *\n * _.startsWith('abc', 'a');\n * // => true\n *\n * _.startsWith('abc', 'b');\n * // => false\n *\n * _.startsWith('abc', 'b', 1);\n * // => true\n */\n function startsWith(string, target, position) {\n string = toString(string);\n position = position == null\n ? 0\n : baseClamp(toInteger(position), 0, string.length);\n\n target = baseToString(target);\n return string.slice(position, position + target.length) == target;\n }\n\n /**\n * Creates a compiled template function that can interpolate data properties\n * in \"interpolate\" delimiters, HTML-escape interpolated data properties in\n * \"escape\" delimiters, and execute JavaScript in \"evaluate\" delimiters. Data\n * properties may be accessed as free variables in the template. If a setting\n * object is given, it takes precedence over `_.templateSettings` values.\n *\n * **Note:** In the development build `_.template` utilizes\n * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)\n * for easier debugging.\n *\n * For more information on precompiling templates see\n * [lodash's custom builds documentation](https://lodash.com/custom-builds).\n *\n * For more information on Chrome extension sandboxes see\n * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).\n *\n * @static\n * @since 0.1.0\n * @memberOf _\n * @category String\n * @param {string} [string=''] The template string.\n * @param {Object} [options={}] The options object.\n * @param {RegExp} [options.escape=_.templateSettings.escape]\n * The HTML \"escape\" delimiter.\n * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]\n * The \"evaluate\" delimiter.\n * @param {Object} [options.imports=_.templateSettings.imports]\n * An object to import into the template as free variables.\n * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]\n * The \"interpolate\" delimiter.\n * @param {string} [options.sourceURL='lodash.templateSources[n]']\n * The sourceURL of the compiled template.\n * @param {string} [options.variable='obj']\n * The data object variable name.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the compiled template function.\n * @example\n *\n * // Use the \"interpolate\" delimiter to create a compiled template.\n * var compiled = _.template('hello <%= user %>!');\n * compiled({ 'user': 'fred' });\n * // => 'hello fred!'\n *\n * // Use the HTML \"escape\" delimiter to escape data property values.\n * var compiled = _.template('<%- value %>');\n * compiled({ 'value': '