diff --git a/browser.js b/browser.js
index 778fd643b..b68524c1b 100644
--- a/browser.js
+++ b/browser.js
@@ -6,7 +6,7 @@
  *   license: MIT (http://opensource.org/licenses/MIT)
  *   author: Heather Arthur <fayearthur@gmail.com>
  *   homepage: https://github.com/brainjs/brain.js#readme
- *   version: 1.4.4
+ *   version: 1.4.7
  *
  * acorn:
  *   license: MIT (http://opensource.org/licenses/MIT)
diff --git a/browser.min.js b/browser.min.js
index 8c41a6bee..1a4969648 100644
--- a/browser.min.js
+++ b/browser.min.js
@@ -6,7 +6,7 @@
  *   license: MIT (http://opensource.org/licenses/MIT)
  *   author: Heather Arthur <fayearthur@gmail.com>
  *   homepage: https://github.com/brainjs/brain.js#readme
- *   version: 1.4.4
+ *   version: 1.4.7
  *
  * acorn:
  *   license: MIT (http://opensource.org/licenses/MIT)
@@ -252,12 +252,12 @@
 var CrossValidate=require("./dist/cross-validate").default,likely=require("./dist/likely").default,lookup=require("./dist/lookup").default,NeuralNetwork=require("./dist/neural-network").default,NeuralNetworkGPU=require("./dist/neural-network-gpu").default,TrainStream=require("./dist/train-stream").default,RNNTimeStep=require("./dist/recurrent/rnn-time-step").default,LSTMTimeStep=require("./dist/recurrent/lstm-time-step").default,GRUTimeStep=require("./dist/recurrent/gru-time-step").default,RNN=require("./dist/recurrent/rnn").default,LSTM=require("./dist/recurrent/lstm").default,GRU=require("./dist/recurrent/gru").default,utilities={max:require("./dist/utilities/max").default,mse:require("./dist/utilities/mse").default,ones:require("./dist/utilities/ones").default,random:require("./dist/utilities/random").default,randomWeight:require("./dist/utilities/random-weight").default,randos:require("./dist/utilities/randos").default,range:require("./dist/utilities/range").default,toArray:require("./dist/utilities/to-array").default,DataFormatter:require("./dist/utilities/data-formatter").default,zeros:require("./dist/utilities/zeros").default},brain={CrossValidate:CrossValidate,likely:likely,lookup:lookup,NeuralNetwork:NeuralNetwork,NeuralNetworkGPU:NeuralNetworkGPU,TrainStream:TrainStream,recurrent:{RNNTimeStep:RNNTimeStep,LSTMTimeStep:LSTMTimeStep,GRUTimeStep:GRUTimeStep,RNN:RNN,LSTM:LSTM,GRU:GRU},utilities:utilities};"undefined"!=typeof window&&(window.brain=brain),"undefined"!=typeof self&&(self.brain=brain),"undefined"!=typeof module&&(module.exports=brain);
 },{"./dist/cross-validate":1,"./dist/likely":2,"./dist/lookup":3,"./dist/neural-network":5,"./dist/neural-network-gpu":4,"./dist/recurrent/gru":7,"./dist/recurrent/gru-time-step":6,"./dist/recurrent/lstm":9,"./dist/recurrent/lstm-time-step":8,"./dist/recurrent/rnn":35,"./dist/recurrent/rnn-time-step":34,"./dist/train-stream":36,"./dist/utilities/data-formatter":37,"./dist/utilities/max":38,"./dist/utilities/mse":39,"./dist/utilities/ones":40,"./dist/utilities/random":42,"./dist/utilities/random-weight":41,"./dist/utilities/randos":43,"./dist/utilities/range":44,"./dist/utilities/to-array":45,"./dist/utilities/zeros":46}],48:[function(require,module,exports){
 "use strict";function getLens(o){var r=o.length;if(r%4>0)throw new Error("Invalid string. Length must be a multiple of 4");var e=o.indexOf("=");return-1===e&&(e=r),[e,e===r?0:4-e%4]}function byteLength(o){var r=getLens(o),e=r[0],t=r[1];return 3*(e+t)/4-t}function _byteLength(o,r,e){return 3*(r+e)/4-e}function toByteArray(o){for(var r,e=getLens(o),t=e[0],n=e[1],u=new Arr(_byteLength(o,t,n)),p=0,a=n>0?t-4:t,h=0;h<a;h+=4)r=revLookup[o.charCodeAt(h)]<<18|revLookup[o.charCodeAt(h+1)]<<12|revLookup[o.charCodeAt(h+2)]<<6|revLookup[o.charCodeAt(h+3)],u[p++]=r>>16&255,u[p++]=r>>8&255,u[p++]=255&r;return 2===n&&(r=revLookup[o.charCodeAt(h)]<<2|revLookup[o.charCodeAt(h+1)]>>4,u[p++]=255&r),1===n&&(r=revLookup[o.charCodeAt(h)]<<10|revLookup[o.charCodeAt(h+1)]<<4|revLookup[o.charCodeAt(h+2)]>>2,u[p++]=r>>8&255,u[p++]=255&r),u}function tripletToBase64(o){return lookup[o>>18&63]+lookup[o>>12&63]+lookup[o>>6&63]+lookup[63&o]}function encodeChunk(o,r,e){for(var t,n=[],u=r;u<e;u+=3)t=(o[u]<<16&16711680)+(o[u+1]<<8&65280)+(255&o[u+2]),n.push(tripletToBase64(t));return n.join("")}function fromByteArray(o){for(var r,e=o.length,t=e%3,n=[],u=0,p=e-t;u<p;u+=16383)n.push(encodeChunk(o,u,u+16383>p?p:u+16383));return 1===t?(r=o[e-1],n.push(lookup[r>>2]+lookup[r<<4&63]+"==")):2===t&&(r=(o[e-2]<<8)+o[e-1],n.push(lookup[r>>10]+lookup[r>>4&63]+lookup[r<<2&63]+"=")),n.join("")}exports.byteLength=byteLength,exports.toByteArray=toByteArray,exports.fromByteArray=fromByteArray;for(var lookup=[],revLookup=[],Arr="undefined"!=typeof Uint8Array?Uint8Array:Array,code="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",i=0,len=code.length;i<len;++i)lookup[i]=code[i],revLookup[code.charCodeAt(i)]=i;revLookup["-".charCodeAt(0)]=62,revLookup["_".charCodeAt(0)]=63;
+
 },{}],49:[function(require,module,exports){
 
 },{}],50:[function(require,module,exports){
 (function (global){
 "use strict";function typedArraySupport(){try{var t=new Uint8Array(1);return t.__proto__={__proto__:Uint8Array.prototype,foo:function(){return 42}},42===t.foo()&&"function"==typeof t.subarray&&0===t.subarray(1,1).byteLength}catch(t){return!1}}function kMaxLength(){return Buffer.TYPED_ARRAY_SUPPORT?2147483647:1073741823}function createBuffer(t,e){if(kMaxLength()<e)throw new RangeError("Invalid typed array length");return Buffer.TYPED_ARRAY_SUPPORT?(t=new Uint8Array(e),t.__proto__=Buffer.prototype):(null===t&&(t=new Buffer(e)),t.length=e),t}function Buffer(t,e,r){if(!(Buffer.TYPED_ARRAY_SUPPORT||this instanceof Buffer))return new Buffer(t,e,r);if("number"==typeof t){if("string"==typeof e)throw new Error("If encoding is specified then the first argument must be a string");return allocUnsafe(this,t)}return from(this,t,e,r)}function from(t,e,r,n){if("number"==typeof e)throw new TypeError('"value" argument must not be a number');return"undefined"!=typeof ArrayBuffer&&e instanceof ArrayBuffer?fromArrayBuffer(t,e,r,n):"string"==typeof e?fromString(t,e,r):fromObject(t,e)}function assertSize(t){if("number"!=typeof t)throw new TypeError('"size" argument must be a number');if(t<0)throw new RangeError('"size" argument must not be negative')}function alloc(t,e,r,n){return assertSize(e),e<=0?createBuffer(t,e):void 0!==r?"string"==typeof n?createBuffer(t,e).fill(r,n):createBuffer(t,e).fill(r):createBuffer(t,e)}function allocUnsafe(t,e){if(assertSize(e),t=createBuffer(t,e<0?0:0|checked(e)),!Buffer.TYPED_ARRAY_SUPPORT)for(var r=0;r<e;++r)t[r]=0;return t}function fromString(t,e,r){if("string"==typeof r&&""!==r||(r="utf8"),!Buffer.isEncoding(r))throw new TypeError('"encoding" must be a valid string encoding');var n=0|byteLength(e,r);t=createBuffer(t,n);var f=t.write(e,r);return f!==n&&(t=t.slice(0,f)),t}function fromArrayLike(t,e){var r=e.length<0?0:0|checked(e.length);t=createBuffer(t,r);for(var n=0;n<r;n+=1)t[n]=255&e[n];return t}function 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argument is out of bounds');if(r+n>t.length)throw new RangeError("Index out of range")}function objectWriteUInt16(t,e,r,n){e<0&&(e=65535+e+1);for(var f=0,i=Math.min(t.length-r,2);f<i;++f)t[r+f]=(e&255<<8*(n?f:1-f))>>>8*(n?f:1-f)}function objectWriteUInt32(t,e,r,n){e<0&&(e=4294967295+e+1);for(var f=0,i=Math.min(t.length-r,4);f<i;++f)t[r+f]=e>>>8*(n?f:3-f)&255}function checkIEEE754(t,e,r,n,f,i){if(r+n>t.length)throw new RangeError("Index out of range");if(r<0)throw new RangeError("Index out of range")}function writeFloat(t,e,r,n,f){return f||checkIEEE754(t,e,r,4,3.4028234663852886e38,-3.4028234663852886e38),ieee754.write(t,e,r,n,23,4),r+4}function writeDouble(t,e,r,n,f){return f||checkIEEE754(t,e,r,8,1.7976931348623157e308,-1.7976931348623157e308),ieee754.write(t,e,r,n,52,8),r+8}function base64clean(t){if(t=stringtrim(t).replace(INVALID_BASE64_RE,""),t.length<2)return"";for(;t.length%4!=0;)t+="=";return t}function stringtrim(t){return t.trim?t.trim():t.replace(/^\s+|\s+$/g,"")}function 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base64ToBytes(t){return base64.toByteArray(base64clean(t))}function blitBuffer(t,e,r,n){for(var f=0;f<n&&!(f+r>=e.length||f>=t.length);++f)e[f+r]=t[f];return f}function isnan(t){return t!==t}var base64=require("base64-js"),ieee754=require("ieee754"),isArray=require("isarray");exports.Buffer=Buffer,exports.SlowBuffer=SlowBuffer,exports.INSPECT_MAX_BYTES=50,Buffer.TYPED_ARRAY_SUPPORT=void 0!==global.TYPED_ARRAY_SUPPORT?global.TYPED_ARRAY_SUPPORT:typedArraySupport(),exports.kMaxLength=kMaxLength(),Buffer.poolSize=8192,Buffer._augment=function(t){return t.__proto__=Buffer.prototype,t},Buffer.from=function(t,e,r){return from(null,t,e,r)},Buffer.TYPED_ARRAY_SUPPORT&&(Buffer.prototype.__proto__=Uint8Array.prototype,Buffer.__proto__=Uint8Array,"undefined"!=typeof Symbol&&Symbol.species&&Buffer[Symbol.species]===Buffer&&Object.defineProperty(Buffer,Symbol.species,{value:null,configurable:!0})),Buffer.alloc=function(t,e,r){return alloc(null,t,e,r)},Buffer.allocUnsafe=function(t){return allocUnsafe(null,t)},Buffer.allocUnsafeSlow=function(t){return allocUnsafe(null,t)},Buffer.isBuffer=function(t){return!(null==t||!t._isBuffer)},Buffer.compare=function(t,e){if(!Buffer.isBuffer(t)||!Buffer.isBuffer(e))throw new TypeError("Arguments must be Buffers");if(t===e)return 0;for(var r=t.length,n=e.length,f=0,i=Math.min(r,n);f<i;++f)if(t[f]!==e[f]){r=t[f],n=e[f];break}return r<n?-1:n<r?1:0},Buffer.isEncoding=function(t){switch(String(t).toLowerCase()){case"hex":case"utf8":case"utf-8":case"ascii":case"latin1":case"binary":case"base64":case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return!0;default:return!1}},Buffer.concat=function(t,e){if(!isArray(t))throw new TypeError('"list" argument must be an Array of Buffers');if(0===t.length)return Buffer.alloc(0);var r;if(void 0===e)for(e=0,r=0;r<t.length;++r)e+=t[r].length;var n=Buffer.allocUnsafe(e),f=0;for(r=0;r<t.length;++r){var i=t[r];if(!Buffer.isBuffer(i))throw new TypeError('"list" argument must be an Array of Buffers');i.copy(n,f),f+=i.length}return n},Buffer.byteLength=byteLength,Buffer.prototype._isBuffer=!0,Buffer.prototype.swap16=function(){var t=this.length;if(t%2!=0)throw new RangeError("Buffer size must be a multiple of 16-bits");for(var e=0;e<t;e+=2)swap(this,e,e+1);return this},Buffer.prototype.swap32=function(){var t=this.length;if(t%4!=0)throw new RangeError("Buffer size must be a multiple of 32-bits");for(var e=0;e<t;e+=4)swap(this,e,e+3),swap(this,e+1,e+2);return this},Buffer.prototype.swap64=function(){var t=this.length;if(t%8!=0)throw new RangeError("Buffer size must be a multiple of 64-bits");for(var e=0;e<t;e+=8)swap(this,e,e+7),swap(this,e+1,e+6),swap(this,e+2,e+5),swap(this,e+3,e+4);return this},Buffer.prototype.toString=function(){var t=0|this.length;return 0===t?"":0===arguments.length?utf8Slice(this,0,t):slowToString.apply(this,arguments)},Buffer.prototype.equals=function(t){if(!Buffer.isBuffer(t))throw new TypeError("Argument must be a Buffer");return this===t||0===Buffer.compare(this,t)},Buffer.prototype.inspect=function(){var t="",e=exports.INSPECT_MAX_BYTES;return this.length>0&&(t=this.toString("hex",0,e).match(/.{2}/g).join(" "),this.length>e&&(t+=" ... ")),"<Buffer "+t+">"},Buffer.prototype.compare=function(t,e,r,n,f){if(!Buffer.isBuffer(t))throw new TypeError("Argument must be a Buffer");if(void 0===e&&(e=0),void 0===r&&(r=t?t.length:0),void 0===n&&(n=0),void 0===f&&(f=this.length),e<0||r>t.length||n<0||f>this.length)throw new RangeError("out of range index");if(n>=f&&e>=r)return 0;if(n>=f)return-1;if(e>=r)return 1;if(e>>>=0,r>>>=0,n>>>=0,f>>>=0,this===t)return 0;for(var i=f-n,o=r-e,u=Math.min(i,o),s=this.slice(n,f),a=t.slice(e,r),h=0;h<u;++h)if(s[h]!==a[h]){i=s[h],o=a[h];break}return i<o?-1:o<i?1:0},Buffer.prototype.includes=function(t,e,r){return-1!==this.indexOf(t,e,r)},Buffer.prototype.indexOf=function(t,e,r){return bidirectionalIndexOf(this,t,e,r,!0)},Buffer.prototype.lastIndexOf=function(t,e,r){return bidirectionalIndexOf(this,t,e,r,!1)},Buffer.prototype.write=function(t,e,r,n){if(void 0===e)n="utf8",r=this.length,e=0;else if(void 0===r&&"string"==typeof e)n=e,r=this.length,e=0;else{if(!isFinite(e))throw new Error("Buffer.write(string, encoding, offset[, length]) is no longer supported");e|=0,isFinite(r)?(r|=0,void 0===n&&(n="utf8")):(n=r,r=void 0)}var f=this.length-e;if((void 0===r||r>f)&&(r=f),t.length>0&&(r<0||e<0)||e>this.length)throw new RangeError("Attempt to write outside buffer bounds");n||(n="utf8");for(var i=!1;;)switch(n){case"hex":return hexWrite(this,t,e,r);case"utf8":case"utf-8":return utf8Write(this,t,e,r);case"ascii":return asciiWrite(this,t,e,r);case"latin1":case"binary":return latin1Write(this,t,e,r);case"base64":return base64Write(this,t,e,r);case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return ucs2Write(this,t,e,r);default:if(i)throw new TypeError("Unknown encoding: "+n);n=(""+n).toLowerCase(),i=!0}},Buffer.prototype.toJSON=function(){return{type:"Buffer",data:Array.prototype.slice.call(this._arr||this,0)}};var MAX_ARGUMENTS_LENGTH=4096;Buffer.prototype.slice=function(t,e){var r=this.length;t=~~t,e=void 0===e?r:~~e,t<0?(t+=r)<0&&(t=0):t>r&&(t=r),e<0?(e+=r)<0&&(e=0):e>r&&(e=r),e<t&&(e=t);var n;if(Buffer.TYPED_ARRAY_SUPPORT)n=this.subarray(t,e),n.__proto__=Buffer.prototype;else{var f=e-t;n=new Buffer(f,void 0);for(var i=0;i<f;++i)n[i]=this[i+t]}return n},Buffer.prototype.readUIntLE=function(t,e,r){t|=0,e|=0,r||checkOffset(t,e,this.length);for(var n=this[t],f=1,i=0;++i<e&&(f*=256);)n+=this[t+i]*f;return n},Buffer.prototype.readUIntBE=function(t,e,r){t|=0,e|=0,r||checkOffset(t,e,this.length);for(var n=this[t+--e],f=1;e>0&&(f*=256);)n+=this[t+--e]*f;return n},Buffer.prototype.readUInt8=function(t,e){return e||checkOffset(t,1,this.length),this[t]},Buffer.prototype.readUInt16LE=function(t,e){return e||checkOffset(t,2,this.length),this[t]|this[t+1]<<8},Buffer.prototype.readUInt16BE=function(t,e){return e||checkOffset(t,2,this.length),this[t]<<8|this[t+1]},Buffer.prototype.readUInt32LE=function(t,e){return e||checkOffset(t,4,this.length),(this[t]|this[t+1]<<8|this[t+2]<<16)+16777216*this[t+3]},Buffer.prototype.readUInt32BE=function(t,e){return e||checkOffset(t,4,this.length),16777216*this[t]+(this[t+1]<<16|this[t+2]<<8|this[t+3])},Buffer.prototype.readIntLE=function(t,e,r){t|=0,e|=0,r||checkOffset(t,e,this.length);for(var n=this[t],f=1,i=0;++i<e&&(f*=256);)n+=this[t+i]*f;return f*=128,n>=f&&(n-=Math.pow(2,8*e)),n},Buffer.prototype.readIntBE=function(t,e,r){t|=0,e|=0,r||checkOffset(t,e,this.length);for(var n=e,f=1,i=this[t+--n];n>0&&(f*=256);)i+=this[t+--n]*f;return f*=128,i>=f&&(i-=Math.pow(2,8*e)),i},Buffer.prototype.readInt8=function(t,e){return e||checkOffset(t,1,this.length),128&this[t]?-1*(255-this[t]+1):this[t]},Buffer.prototype.readInt16LE=function(t,e){e||checkOffset(t,2,this.length);var r=this[t]|this[t+1]<<8;return 32768&r?4294901760|r:r},Buffer.prototype.readInt16BE=function(t,e){e||checkOffset(t,2,this.length);var r=this[t+1]|this[t]<<8;return 32768&r?4294901760|r:r},Buffer.prototype.readInt32LE=function(t,e){return e||checkOffset(t,4,this.length),this[t]|this[t+1]<<8|this[t+2]<<16|this[t+3]<<24},Buffer.prototype.readInt32BE=function(t,e){return e||checkOffset(t,4,this.length),this[t]<<24|this[t+1]<<16|this[t+2]<<8|this[t+3]},Buffer.prototype.readFloatLE=function(t,e){return e||checkOffset(t,4,this.length),ieee754.read(this,t,!0,23,4)},Buffer.prototype.readFloatBE=function(t,e){return e||checkOffset(t,4,this.length),ieee754.read(this,t,!1,23,4)},Buffer.prototype.readDoubleLE=function(t,e){return e||checkOffset(t,8,this.length),ieee754.read(this,t,!0,52,8)},Buffer.prototype.readDoubleBE=function(t,e){return e||checkOffset(t,8,this.length),ieee754.read(this,t,!1,52,8)},Buffer.prototype.writeUIntLE=function(t,e,r,n){if(t=+t,e|=0,r|=0,!n){checkInt(this,t,e,r,Math.pow(2,8*r)-1,0)}var f=1,i=0;for(this[e]=255&t;++i<r&&(f*=256);)this[e+i]=t/f&255;return e+r},Buffer.prototype.writeUIntBE=function(t,e,r,n){if(t=+t,e|=0,r|=0,!n){checkInt(this,t,e,r,Math.pow(2,8*r)-1,0)}var f=r-1,i=1;for(this[e+f]=255&t;--f>=0&&(i*=256);)this[e+f]=t/i&255;return e+r},Buffer.prototype.writeUInt8=function(t,e,r){return t=+t,e|=0,r||checkInt(this,t,e,1,255,0),Buffer.TYPED_ARRAY_SUPPORT||(t=Math.floor(t)),this[e]=255&t,e+1},Buffer.prototype.writeUInt16LE=function(t,e,r){return t=+t,e|=0,r||checkInt(this,t,e,2,65535,0),Buffer.TYPED_ARRAY_SUPPORT?(this[e]=255&t,this[e+1]=t>>>8):objectWriteUInt16(this,t,e,!0),e+2},Buffer.prototype.writeUInt16BE=function(t,e,r){return t=+t,e|=0,r||checkInt(this,t,e,2,65535,0),Buffer.TYPED_ARRAY_SUPPORT?(this[e]=t>>>8,this[e+1]=255&t):objectWriteUInt16(this,t,e,!1),e+2},Buffer.prototype.writeUInt32LE=function(t,e,r){return t=+t,e|=0,r||checkInt(this,t,e,4,4294967295,0),Buffer.TYPED_ARRAY_SUPPORT?(this[e+3]=t>>>24,this[e+2]=t>>>16,this[e+1]=t>>>8,this[e]=255&t):objectWriteUInt32(this,t,e,!0),e+4},Buffer.prototype.writeUInt32BE=function(t,e,r){return t=+t,e|=0,r||checkInt(this,t,e,4,4294967295,0),Buffer.TYPED_ARRAY_SUPPORT?(this[e]=t>>>24,this[e+1]=t>>>16,this[e+2]=t>>>8,this[e+3]=255&t):objectWriteUInt32(this,t,e,!1),e+4},Buffer.prototype.writeIntLE=function(t,e,r,n){if(t=+t,e|=0,!n){var f=Math.pow(2,8*r-1);checkInt(this,t,e,r,f-1,-f)}var i=0,o=1,u=0;for(this[e]=255&t;++i<r&&(o*=256);)t<0&&0===u&&0!==this[e+i-1]&&(u=1),this[e+i]=(t/o>>0)-u&255;return e+r},Buffer.prototype.writeIntBE=function(t,e,r,n){if(t=+t,e|=0,!n){var f=Math.pow(2,8*r-1);checkInt(this,t,e,r,f-1,-f)}var i=r-1,o=1,u=0;for(this[e+i]=255&t;--i>=0&&(o*=256);)t<0&&0===u&&0!==this[e+i+1]&&(u=1),this[e+i]=(t/o>>0)-u&255;return e+r},Buffer.prototype.writeInt8=function(t,e,r){return t=+t,e|=0,r||checkInt(this,t,e,1,127,-128),Buffer.TYPED_ARRAY_SUPPORT||(t=Math.floor(t)),t<0&&(t=255+t+1),this[e]=255&t,e+1},Buffer.prototype.writeInt16LE=function(t,e,r){return t=+t,e|=0,r||checkInt(this,t,e,2,32767,-32768),Buffer.TYPED_ARRAY_SUPPORT?(this[e]=255&t,this[e+1]=t>>>8):objectWriteUInt16(this,t,e,!0),e+2},Buffer.prototype.writeInt16BE=function(t,e,r){return t=+t,e|=0,r||checkInt(this,t,e,2,32767,-32768),Buffer.TYPED_ARRAY_SUPPORT?(this[e]=t>>>8,this[e+1]=255&t):objectWriteUInt16(this,t,e,!1),e+2},Buffer.prototype.writeInt32LE=function(t,e,r){return t=+t,e|=0,r||checkInt(this,t,e,4,2147483647,-2147483648),Buffer.TYPED_ARRAY_SUPPORT?(this[e]=255&t,this[e+1]=t>>>8,this[e+2]=t>>>16,this[e+3]=t>>>24):objectWriteUInt32(this,t,e,!0),e+4},Buffer.prototype.writeInt32BE=function(t,e,r){return t=+t,e|=0,r||checkInt(this,t,e,4,2147483647,-2147483648),t<0&&(t=4294967295+t+1),Buffer.TYPED_ARRAY_SUPPORT?(this[e]=t>>>24,this[e+1]=t>>>16,this[e+2]=t>>>8,this[e+3]=255&t):objectWriteUInt32(this,t,e,!1),e+4},Buffer.prototype.writeFloatLE=function(t,e,r){return writeFloat(this,t,e,!0,r)},Buffer.prototype.writeFloatBE=function(t,e,r){return writeFloat(this,t,e,!1,r)},Buffer.prototype.writeDoubleLE=function(t,e,r){return writeDouble(this,t,e,!0,r)},Buffer.prototype.writeDoubleBE=function(t,e,r){return writeDouble(this,t,e,!1,r)},Buffer.prototype.copy=function(t,e,r,n){if(r||(r=0),n||0===n||(n=this.length),e>=t.length&&(e=t.length),e||(e=0),n>0&&n<r&&(n=r),n===r)return 0;if(0===t.length||0===this.length)return 0;if(e<0)throw new RangeError("targetStart out of bounds");if(r<0||r>=this.length)throw new RangeError("sourceStart out of bounds");if(n<0)throw new RangeError("sourceEnd out of bounds");n>this.length&&(n=this.length),t.length-e<n-r&&(n=t.length-e+r);var f,i=n-r;if(this===t&&r<e&&e<n)for(f=i-1;f>=0;--f)t[f+e]=this[f+r];else if(i<1e3||!Buffer.TYPED_ARRAY_SUPPORT)for(f=0;f<i;++f)t[f+e]=this[f+r];else Uint8Array.prototype.set.call(t,this.subarray(r,r+i),e);return i},Buffer.prototype.fill=function(t,e,r,n){if("string"==typeof t){if("string"==typeof e?(n=e,e=0,r=this.length):"string"==typeof r&&(n=r,r=this.length),1===t.length){var f=t.charCodeAt(0);f<256&&(t=f)}if(void 0!==n&&"string"!=typeof n)throw new TypeError("encoding must be a string");if("string"==typeof n&&!Buffer.isEncoding(n))throw new TypeError("Unknown encoding: "+n)}else"number"==typeof t&&(t&=255);if(e<0||this.length<e||this.length<r)throw new RangeError("Out of range index");if(r<=e)return this;e>>>=0,r=void 0===r?this.length:r>>>0,t||(t=0);var i;if("number"==typeof t)for(i=e;i<r;++i)this[i]=t;else{var o=Buffer.isBuffer(t)?t:utf8ToBytes(new Buffer(t,n).toString()),u=o.length;for(i=0;i<r-e;++i)this[i+e]=o[i%u]}return this};var INVALID_BASE64_RE=/[^+\/0-9A-Za-z-_]/g;
-
 }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{"base64-js":48,"ieee754":87,"isarray":90}],51:[function(require,module,exports){
 (function (Buffer){
@@ -346,7 +346,6 @@ function EventEmitter(){this._events=this._events||{},this._maxListeners=this._m
 
 },{"./utils":84}],79:[function(require,module,exports){
 "use strict";function _classCallCheck(e,r){if(!(e instanceof r))throw new TypeError("Cannot call a class as a function")}var _createClass=function(){function e(e,r){for(var n=0;n<r.length;n++){var t=r[n];t.enumerable=t.enumerable||!1,t.configurable=!0,"value"in t&&(t.writable=!0),Object.defineProperty(e,t.key,t)}}return function(r,n,t){return n&&e(r.prototype,n),t&&e(r,t),r}}(),UtilsCore=require("./utils-core");module.exports=function(){function e(){_classCallCheck(this,e)}return _createClass(e,null,[{key:"validateKernelObj",value:function(e){if(null===e)throw"KernelObj being validated is NULL";if("string"==typeof e){try{e=JSON.parse(e)}catch(e){throw console.error(e),"Failed to convert KernelObj from JSON string"}if(null===e)throw"Invalid (NULL) KernelObj JSON string representation"}if(!0!==e.isKernelObj)throw"Failed missing isKernelObj flag check";return e}},{key:"loadKernelObj",value:function(e,r){e=validateKernelObj(e)}}]),e}();
-
 },{"./utils-core":83}],80:[function(require,module,exports){
 "use strict";function _classCallCheck(e,n){if(!(e instanceof n))throw new TypeError("Cannot call a class as a function")}function _possibleConstructorReturn(e,n){if(!e)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return!n||"object"!=typeof n&&"function"!=typeof n?e:n}function _inherits(e,n){if("function"!=typeof n&&null!==n)throw new TypeError("Super expression must either be null or a function, not "+typeof n);e.prototype=Object.create(n&&n.prototype,{constructor:{value:e,enumerable:!1,writable:!0,configurable:!0}}),n&&(Object.setPrototypeOf?Object.setPrototypeOf(e,n):e.__proto__=n)}var _createClass=function(){function e(e,n){for(var r=0;r<n.length;r++){var t=n[r];t.enumerable=t.enumerable||!1,t.configurable=!0,"value"in t&&(t.writable=!0),Object.defineProperty(e,t.key,t)}}return function(n,r,t){return r&&e(n.prototype,r),t&&e(n,t),n}}(),utils=require("./utils"),WebGLRunner=require("../backend/web-gl/runner"),WebGL2Runner=require("../backend/web-gl2/runner"),CPURunner=require("../backend/cpu/runner"),WebGLValidatorKernel=require("../backend/web-gl/validator-kernel"),WebGL2ValidatorKernel=require("../backend/web-gl2/validator-kernel"),GPUCore=require("./gpu-core"),GPU=function(e){function n(e){_classCallCheck(this,n);var r=_possibleConstructorReturn(this,(n.__proto__||Object.getPrototypeOf(n)).call(this,e));e=e||{},r._canvas=e.canvas||null,r._webGl=e.webGl||null;var t=e.mode,u=void 0;if(utils.isWebGlSupported())if(r._webGl)if("undefined"!=typeof WebGL2RenderingContext&&r._webGl.constructor===WebGL2RenderingContext)u="webgl2";else{if("undefined"==typeof WebGLRenderingContext||r._webGl.constructor!==WebGLRenderingContext)throw new Error("unknown WebGL Context");u="webgl"}else u=t||"gpu";else{if(t&&"cpu"!==t)throw new Error('A requested mode of "'+t+'" and is not supported');console.warn("Warning: gpu not supported, falling back to cpu support"),u="cpu"}r.kernels=[];var i={canvas:r._canvas,webGl:r._webGl};switch(u){case"cpu":r._runner=new CPURunner(i);break;case"gpu":var a=r.getGPURunner();r._runner=new a(i);break;case"webgl2":r._runner=new WebGL2Runner(i);break;case"webgl":r._runner=new WebGLRunner(i);break;case"webgl2-validator":r._runner=new WebGL2Runner(i),r._runner.Kernel=WebGL2ValidatorKernel;break;case"webgl-validator":r._runner=new WebGLRunner(i),r._runner.Kernel=WebGLValidatorKernel;break;default:throw new Error('"'+t+'" mode is not defined')}return r}return _inherits(n,e),_createClass(n,[{key:"createKernel",value:function(e,n){if(void 0===e)throw"Missing fn parameter";if(!utils.isFunction(e)&&"string"!=typeof e)throw"fn parameter not a function";var r=Object.assign({webGl:this._webGl,canvas:this._canvas},n||{}),t=this._runner.buildKernel(e,r);return this._canvas||(this._canvas=t.getCanvas()),this._runner.canvas||(this._runner.canvas=t.getCanvas()),this.kernels.push(t),t}},{key:"createKernelMap",value:function(){var e=void 0,n=void 0;"function"==typeof arguments[arguments.length-2]?(e=arguments[arguments.length-2],n=arguments[arguments.length-1]):e=arguments[arguments.length-1],utils.isWebGlDrawBuffersSupported()||(this._runner=new CPURunner(n));var r=this.createKernel(e,n);if(Array.isArray(arguments[0]))for(var t=arguments[0],u=0;u<t.length;u++)r.addSubKernel(t[u]);else{var i=arguments[0];for(var a in i)i.hasOwnProperty(a)&&r.addSubKernelProperty(a,i[a])}return r}},{key:"combineKernels",value:function(){var e=arguments[arguments.length-2],n=arguments[arguments.length-1];if("cpu"===this.getMode())return n;for(var r=arguments[0].getCanvas(),t=arguments[0].getWebGl(),u=0;u<arguments.length-1;u++)arguments[u].setCanvas(r).setWebGl(t).setOutputToTexture(!0);return function(){n.apply(null,arguments);var r=e.texSize,t=e.getWebGl(),u=e.threadDim,i=void 0;if(e.floatOutput){var a=r[0],o=Math.ceil(r[1]/4);i=new Float32Array(a*o*4),t.readPixels(0,0,a,o,t.RGBA,t.FLOAT,i)}else{var l=new Uint8Array(r[0]*r[1]*4);t.readPixels(0,0,r[0],r[1],t.RGBA,t.UNSIGNED_BYTE,l),i=new Float32Array(l.buffer)}if(i=i.subarray(0,u[0]*u[1]*u[2]),1===e.output.length)return i;if(2===e.output.length)return utils.splitArray(i,e.output[0]);if(3===e.output.length){return utils.splitArray(i,e.output[0]*e.output[1]).map(function(n){return utils.splitArray(n,e.output[0])})}}}},{key:"getGPURunner",value:function(){return"undefined"!=typeof WebGL2RenderingContext&&utils.isWebGl2Supported()?WebGL2Runner:"undefined"!=typeof WebGLRenderingContext?WebGLRunner:void 0}},{key:"addFunction",value:function(e,n){return this._runner.functionBuilder.addFunction(null,e,n),this}},{key:"addNativeFunction",value:function(e,n){return this._runner.functionBuilder.addNativeFunction(e,n),this}},{key:"getMode",value:function(){return this._runner.getMode()}},{key:"isWebGlSupported",value:function(){return utils.isWebGlSupported()}},{key:"hasIntegerDivisionAccuracyBug",value:function(){return utils.hasIntegerDivisionAccuracyBug()}},{key:"getCanvas",value:function(){return this._canvas}},{key:"getWebGl",value:function(){return this._webGl}},{key:"destroy",value:function(){var e=this;setTimeout(function(){for(var n=e.kernels,r=!e._webGl&&n.length&&n[0]._webGl,t=0;t<e.kernels.length;t++)e.kernels[t].destroy(!0);if(r){r.OES_texture_float=null,r.OES_texture_float_linear=null,r.OES_element_index_uint=null;var u=r.getExtension("WEBGL_lose_context");u&&u.loseContext()}},0)}}]),n}(GPUCore);Object.assign(GPU,GPUCore),module.exports=GPU;
 
@@ -364,17 +363,18 @@ function EventEmitter(){this._events=this._events||{},this._maxListeners=this._m
 
 },{"../index":85,"./input":81,"./texture":82,"./utils-core":83}],85:[function(require,module,exports){
 "use strict";var GPU=require("./core/gpu"),alias=require("./core/alias"),utils=require("./core/utils"),Input=require("./core/input"),Texture=require("./core/texture"),CPUFunctionBuilder=require("./backend/cpu/function-builder"),CPUFunctionNode=require("./backend/cpu/function-node"),CPUKernel=require("./backend/cpu/kernel"),CPURunner=require("./backend/cpu/runner"),WebGLFunctionBuilder=require("./backend/web-gl/function-builder"),WebGLFunctionNode=require("./backend/web-gl/function-node"),WebGLKernel=require("./backend/web-gl/kernel"),WebGLRunner=require("./backend/web-gl/runner"),WebGL2FunctionBuilder=require("./backend/web-gl2/function-builder"),WebGL2FunctionNode=require("./backend/web-gl2/function-node"),WebGL2Kernel=require("./backend/web-gl2/kernel"),WebGL2Runner=require("./backend/web-gl2/runner");GPU.alias=alias,GPU.utils=utils,GPU.Texture=Texture,GPU.Input=Input,GPU.input=function(e,n){return new Input(e,n)},GPU.CPUFunctionBuilder=CPUFunctionBuilder,GPU.CPUFunctionNode=CPUFunctionNode,GPU.CPUKernel=CPUKernel,GPU.CPURunner=CPURunner,GPU.WebGLFunctionBuilder=WebGLFunctionBuilder,GPU.WebGLFunctionNode=WebGLFunctionNode,GPU.WebGLKernel=WebGLKernel,GPU.WebGLRunner=WebGLRunner,GPU.WebGL2FunctionBuilder=WebGL2FunctionBuilder,GPU.WebGL2FunctionNode=WebGL2FunctionNode,GPU.WebGL2Kernel=WebGL2Kernel,GPU.WebGL2Runner=WebGL2Runner,"undefined"!=typeof module&&(module.exports=GPU),"undefined"!=typeof window&&(window.GPU=GPU),"undefined"!=typeof self&&(self.GPU=GPU);
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this.next(),this.semicolon(),this.finishNode(t,"DebuggerStatement")},ht.parseDoStatement=function(t){return this.next(),this.labels.push(pt),t.body=this.parseStatement(!1),this.labels.pop(),this.expect(z._while),t.test=this.parseParenExpression(),this.options.ecmaVersion>=6?this.eat(z.semi):this.semicolon(),this.finishNode(t,"DoWhileStatement")},ht.parseForStatement=function(t){this.next();var e=this.options.ecmaVersion>=9&&(this.inAsync||!this.inFunction&&this.options.allowAwaitOutsideFunction)&&this.eatContextual("await")?this.lastTokStart:-1;if(this.labels.push(pt),this.enterLexicalScope(),this.expect(z.parenL),this.type===z.semi)return e>-1&&this.unexpected(e),this.parseFor(t,null);var i=this.isLet();if(this.type===z._var||this.type===z._const||i){var s=this.startNode(),r=i?"let":this.value;return 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t},ht.parseVarId=function(t,e){t.id=this.parseBindingAtom(e),this.checkLVal(t.id,e,!1)},ht.parseFunction=function(t,e,i,s){this.initFunction(t),(this.options.ecmaVersion>=9||this.options.ecmaVersion>=6&&!s)&&(t.generator=this.eat(z.star)),this.options.ecmaVersion>=8&&(t.async=!!s),e&&(t.id="nullableID"===e&&this.type!==z.name?null:this.parseIdent(),t.id&&this.checkLVal(t.id,this.inModule&&!this.inFunction?"let":"var"));var r=this.inGenerator,a=this.inAsync,n=this.yieldPos,o=this.awaitPos,h=this.inFunction;return this.inGenerator=t.generator,this.inAsync=t.async,this.yieldPos=0,this.awaitPos=0,this.inFunction=!0,this.enterFunctionScope(),e||(t.id=this.type===z.name?this.parseIdent():null),this.parseFunctionParams(t),this.parseFunctionBody(t,i),this.inGenerator=r,this.inAsync=a,this.yieldPos=n,this.awaitPos=o,this.inFunction=h,this.finishNode(t,e?"FunctionDeclaration":"FunctionExpression")},ht.parseFunctionParams=function(t){this.expect(z.parenL),t.params=this.parseBindingList(z.parenR,!1,this.options.ecmaVersion>=8),this.checkYieldAwaitInDefaultParams()},ht.parseClass=function(t,e){var i=this;this.next(),this.parseClassId(t,e),this.parseClassSuper(t);var s=this.startNode(),r=!1;for(s.body=[],this.expect(z.braceL);!this.eat(z.braceR);){var a=i.parseClassMember(s);a&&"MethodDefinition"===a.type&&"constructor"===a.kind&&(r&&i.raise(a.start,"Duplicate constructor in the same class"),r=!0)}return t.body=this.finishNode(s,"ClassBody"),this.finishNode(t,e?"ClassDeclaration":"ClassExpression")},ht.parseClassMember=function(t){var e=this;if(this.eat(z.semi))return null;var i=this.startNode(),s=function(t,s){void 0===s&&(s=!1);var r=e.start,a=e.startLoc;return!!e.eatContextual(t)&&(!(e.type===z.parenL||s&&e.canInsertSemicolon())||(i.key&&e.unexpected(),i.computed=!1,i.key=e.startNodeAt(r,a),i.key.name=t,e.finishNode(i.key,"Identifier"),!1))};i.kind="method",i.static=s("static");var r=this.eat(z.star),a=!1;r||(this.options.ecmaVersion>=8&&s("async",!0)?(a=!0,r=this.options.ecmaVersion>=9&&this.eat(z.star)):s("get")?i.kind="get":s("set")&&(i.kind="set")),i.key||this.parsePropertyName(i);var n=i.key;return i.computed||i.static||!("Identifier"===n.type&&"constructor"===n.name||"Literal"===n.type&&"constructor"===n.value)?i.static&&"Identifier"===n.type&&"prototype"===n.name&&this.raise(n.start,"Classes may not have a static property named 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i=this;if(this.next(),this.eat(z.star))return this.expectContextual("from"),this.type!==z.string&&this.unexpected(),t.source=this.parseExprAtom(),this.semicolon(),this.finishNode(t,"ExportAllDeclaration");if(this.eat(z._default)){this.checkExport(e,"default",this.lastTokStart);var s;if(this.type===z._function||(s=this.isAsyncFunction())){var r=this.startNode();this.next(),s&&this.next(),t.declaration=this.parseFunction(r,"nullableID",!1,s)}else if(this.type===z._class){var a=this.startNode();t.declaration=this.parseClass(a,"nullableID")}else t.declaration=this.parseMaybeAssign(),this.semicolon();return this.finishNode(t,"ExportDefaultDeclaration")}if(this.shouldParseExportStatement())t.declaration=this.parseStatement(!0),"VariableDeclaration"===t.declaration.type?this.checkVariableExport(e,t.declaration.declarations):this.checkExport(e,t.declaration.id.name,t.declaration.id.start),t.specifiers=[],t.source=null;else{if(t.declaration=null,t.specifiers=this.parseExportSpecifiers(e),this.eatContextual("from"))this.type!==z.string&&this.unexpected(),t.source=this.parseExprAtom();else{for(var n=0,o=t.specifiers;n<o.length;n+=1){var h=o[n];i.checkUnreserved(h.local)}t.source=null}this.semicolon()}return this.finishNode(t,"ExportNamedDeclaration")},ht.checkExport=function(t,e,i){t&&(o(t,e)&&this.raiseRecoverable(i,"Duplicate export '"+e+"'"),t[e]=!0)},ht.checkPatternExport=function(t,e){var i=this,s=e.type;if("Identifier"===s)this.checkExport(t,e.name,e.start);else if("ObjectPattern"===s)for(var r=0,a=e.properties;r<a.length;r+=1){var n=a[r];i.checkPatternExport(t,n)}else 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r=e.startNode();r.local=e.parseIdent(!0),r.exported=e.eatContextual("as")?e.parseIdent(!0):r.local,e.checkExport(t,r.exported.name,r.exported.start),i.push(e.finishNode(r,"ExportSpecifier"))}return i},ht.parseImport=function(t){return this.next(),this.type===z.string?(t.specifiers=ut,t.source=this.parseExprAtom()):(t.specifiers=this.parseImportSpecifiers(),this.expectContextual("from"),t.source=this.type===z.string?this.parseExprAtom():this.unexpected()),this.semicolon(),this.finishNode(t,"ImportDeclaration")},ht.parseImportSpecifiers=function(){var t=this,e=[],i=!0;if(this.type===z.name){var s=this.startNode();if(s.local=this.parseIdent(),this.checkLVal(s.local,"let"),e.push(this.finishNode(s,"ImportDefaultSpecifier")),!this.eat(z.comma))return e}if(this.type===z.star){var r=this.startNode();return this.next(),this.expectContextual("as"),r.local=this.parseIdent(),this.checkLVal(r.local,"let"),e.push(this.finishNode(r,"ImportNamespaceSpecifier")),e}for(this.expect(z.braceL);!this.eat(z.braceR);){if(i)i=!1;else if(t.expect(z.comma),t.afterTrailingComma(z.braceR))break;var a=t.startNode();a.imported=t.parseIdent(!0),t.eatContextual("as")?a.local=t.parseIdent():(t.checkUnreserved(a.imported),a.local=a.imported),t.checkLVal(a.local,"let"),e.push(t.finishNode(a,"ImportSpecifier"))}return e},ht.adaptDirectivePrologue=function(t){for(var e=0;e<t.length&&this.isDirectiveCandidate(t[e]);++e)t[e].directive=t[e].expression.raw.slice(1,-1)},ht.isDirectiveCandidate=function(t){return"ExpressionStatement"===t.type&&"Literal"===t.expression.type&&"string"==typeof t.expression.value&&('"'===this.input[t.start]||"'"===this.input[t.start])};var lt=at.prototype;lt.toAssignable=function(t,e,i){var s=this;if(this.options.ecmaVersion>=6&&t)switch(t.type){case"Identifier":this.inAsync&&"await"===t.name&&this.raise(t.start,"Can not use 'await' as identifier inside an async function");break;case"ObjectPattern":case"ArrayPattern":case"RestElement":break;case"ObjectExpression":t.type="ObjectPattern",i&&this.checkPatternErrors(i,!0);for(var r=0,a=t.properties;r<a.length;r+=1){var n=a[r];s.toAssignable(n,e),
 "RestElement"!==n.type||"ArrayPattern"!==n.argument.type&&"ObjectPattern"!==n.argument.type||s.raise(n.argument.start,"Unexpected token")}break;case"Property":"init"!==t.kind&&this.raise(t.key.start,"Object pattern can't contain getter or setter"),this.toAssignable(t.value,e);break;case"ArrayExpression":t.type="ArrayPattern",i&&this.checkPatternErrors(i,!0),this.toAssignableList(t.elements,e);break;case"SpreadElement":t.type="RestElement",this.toAssignable(t.argument,e),"AssignmentPattern"===t.argument.type&&this.raise(t.argument.start,"Rest elements cannot have a default value");break;case"AssignmentExpression":"="!==t.operator&&this.raise(t.left.end,"Only '=' operator can be used for specifying default value."),t.type="AssignmentPattern",delete t.operator,this.toAssignable(t.left,e);case"AssignmentPattern":break;case"ParenthesizedExpression":this.toAssignable(t.expression,e);break;case"MemberExpression":if(!e)break;default:this.raise(t.start,"Assigning to rvalue")}else i&&this.checkPatternErrors(i,!0);return t},lt.toAssignableList=function(t,e){for(var i=this,s=t.length,r=0;r<s;r++){var a=t[r];a&&i.toAssignable(a,e)}if(s){var n=t[s-1];6===this.options.ecmaVersion&&e&&n&&"RestElement"===n.type&&"Identifier"!==n.argument.type&&this.unexpected(n.argument.start)}return t},lt.parseSpread=function(t){var e=this.startNode();return this.next(),e.argument=this.parseMaybeAssign(!1,t),this.finishNode(e,"SpreadElement")},lt.parseRestBinding=function(){var t=this.startNode();return this.next(),6===this.options.ecmaVersion&&this.type!==z.name&&this.unexpected(),t.argument=this.parseBindingAtom(),this.finishNode(t,"RestElement")},lt.parseBindingAtom=function(){if(this.options.ecmaVersion>=6)switch(this.type){case z.bracketL:var t=this.startNode();return this.next(),t.elements=this.parseBindingList(z.bracketR,!0,!0),this.finishNode(t,"ArrayPattern");case z.braceL:return this.parseObj(!0)}return this.parseIdent()},lt.parseBindingList=function(t,e,i){for(var s=this,r=[],a=!0;!this.eat(t);)if(a?a=!1:s.expect(z.comma),e&&s.type===z.comma)r.push(null);else{if(i&&s.afterTrailingComma(t))break;if(s.type===z.ellipsis){var n=s.parseRestBinding();s.parseBindingListItem(n),r.push(n),s.type===z.comma&&s.raise(s.start,"Comma is not permitted after the rest element"),s.expect(t);break}var o=s.parseMaybeDefault(s.start,s.startLoc);s.parseBindingListItem(o),r.push(o)}return r},lt.parseBindingListItem=function(t){return t},lt.parseMaybeDefault=function(t,e,i){if(i=i||this.parseBindingAtom(),this.options.ecmaVersion<6||!this.eat(z.eq))return i;var s=this.startNodeAt(t,e);return s.left=i,s.right=this.parseMaybeAssign(),this.finishNode(s,"AssignmentPattern")},lt.checkLVal=function(t,e,i){var s=this;switch(t.type){case"Identifier":this.strict&&this.reservedWordsStrictBind.test(t.name)&&this.raiseRecoverable(t.start,(e?"Binding ":"Assigning to ")+t.name+" in strict mode"),i&&(o(i,t.name)&&this.raiseRecoverable(t.start,"Argument name clash"),i[t.name]=!0),e&&"none"!==e&&(("var"===e&&!this.canDeclareVarName(t.name)||"var"!==e&&!this.canDeclareLexicalName(t.name))&&this.raiseRecoverable(t.start,"Identifier '"+t.name+"' has already been declared"),"var"===e?this.declareVarName(t.name):this.declareLexicalName(t.name));break;case"MemberExpression":e&&this.raiseRecoverable(t.start,"Binding member expression");break;case"ObjectPattern":for(var r=0,a=t.properties;r<a.length;r+=1){var n=a[r];s.checkLVal(n,e,i)}break;case"Property":this.checkLVal(t.value,e,i);break;case"ArrayPattern":for(var h=0,p=t.elements;h<p.length;h+=1){var c=p[h];c&&s.checkLVal(c,e,i)}break;case"AssignmentPattern":this.checkLVal(t.left,e,i);break;case"RestElement":this.checkLVal(t.argument,e,i);break;case"ParenthesizedExpression":this.checkLVal(t.expression,e,i);break;default:this.raise(t.start,(e?"Binding":"Assigning to")+" rvalue")}};var dt=at.prototype;dt.checkPropClash=function(t,e,i){if(!(this.options.ecmaVersion>=9&&"SpreadElement"===t.type||this.options.ecmaVersion>=6&&(t.computed||t.method||t.shorthand))){var s,r=t.key;switch(r.type){case"Identifier":s=r.name;break;case"Literal":s=String(r.value);break;default:return}var a=t.kind;if(this.options.ecmaVersion>=6)return void("__proto__"===s&&"init"===a&&(e.proto&&(i&&i.doubleProto<0?i.doubleProto=r.start:this.raiseRecoverable(r.start,"Redefinition of __proto__ property")),e.proto=!0));s="$"+s;var n=e[s];if(n){var o;o="init"===a?this.strict&&n.init||n.get||n.set:n.init||n[a],o&&this.raiseRecoverable(r.start,"Redefinition of property")}else n=e[s]={init:!1,get:!1,set:!1};n[a]=!0}},dt.parseExpression=function(t,e){var i=this,s=this.start,r=this.startLoc,a=this.parseMaybeAssign(t,e);if(this.type===z.comma){var n=this.startNodeAt(s,r);for(n.expressions=[a];this.eat(z.comma);)n.expressions.push(i.parseMaybeAssign(t,e));return this.finishNode(n,"SequenceExpression")}return a},dt.parseMaybeAssign=function(t,e,i){if(this.inGenerator&&this.isContextual("yield"))return this.parseYield();var s=!1,r=-1,a=-1;e?(r=e.parenthesizedAssign,a=e.trailingComma,e.parenthesizedAssign=e.trailingComma=-1):(e=new l,s=!0);var n=this.start,o=this.startLoc;this.type!==z.parenL&&this.type!==z.name||(this.potentialArrowAt=this.start);var h=this.parseMaybeConditional(t,e);if(i&&(h=i.call(this,h,n,o)),this.type.isAssign){var p=this.startNodeAt(n,o);return p.operator=this.value,p.left=this.type===z.eq?this.toAssignable(h,!1,e):h,s||l.call(e),e.shorthandAssign=-1,this.checkLVal(h),this.next(),p.right=this.parseMaybeAssign(t),this.finishNode(p,"AssignmentExpression")}return s&&this.checkExpressionErrors(e,!0),r>-1&&(e.parenthesizedAssign=r),a>-1&&(e.trailingComma=a),h},dt.parseMaybeConditional=function(t,e){var i=this.start,s=this.startLoc,r=this.parseExprOps(t,e);if(this.checkExpressionErrors(e))return r;if(this.eat(z.question)){var a=this.startNodeAt(i,s);return a.test=r,a.consequent=this.parseMaybeAssign(),this.expect(z.colon),a.alternate=this.parseMaybeAssign(t),this.finishNode(a,"ConditionalExpression")}return r},dt.parseExprOps=function(t,e){var i=this.start,s=this.startLoc,r=this.parseMaybeUnary(e,!1);return this.checkExpressionErrors(e)?r:r.start===i&&"ArrowFunctionExpression"===r.type?r:this.parseExprOp(r,i,s,-1,t)},dt.parseExprOp=function(t,e,i,s,r){var a=this.type.binop;if(null!=a&&(!r||this.type!==z._in)&&a>s){var n=this.type===z.logicalOR||this.type===z.logicalAND,o=this.value;this.next();var h=this.start,p=this.startLoc,c=this.parseExprOp(this.parseMaybeUnary(null,!1),h,p,a,r),u=this.buildBinary(e,i,t,c,o,n);return this.parseExprOp(u,e,i,s,r)}return t},dt.buildBinary=function(t,e,i,s,r,a){var n=this.startNodeAt(t,e);return n.left=i,n.operator=r,n.right=s,this.finishNode(n,a?"LogicalExpression":"BinaryExpression")},dt.parseMaybeUnary=function(t,e){var i,s=this,r=this.start,a=this.startLoc;if(this.isContextual("await")&&(this.inAsync||!this.inFunction&&this.options.allowAwaitOutsideFunction))i=this.parseAwait(),e=!0;else if(this.type.prefix){var n=this.startNode(),o=this.type===z.incDec;n.operator=this.value,n.prefix=!0,this.next(),n.argument=this.parseMaybeUnary(null,!0),this.checkExpressionErrors(t,!0),o?this.checkLVal(n.argument):this.strict&&"delete"===n.operator&&"Identifier"===n.argument.type?this.raiseRecoverable(n.start,"Deleting local variable in strict mode"):e=!0,i=this.finishNode(n,o?"UpdateExpression":"UnaryExpression")}else{if(i=this.parseExprSubscripts(t),this.checkExpressionErrors(t))return i;for(;this.type.postfix&&!this.canInsertSemicolon();){var h=s.startNodeAt(r,a);h.operator=s.value,h.prefix=!1,h.argument=i,s.checkLVal(i),s.next(),i=s.finishNode(h,"UpdateExpression")}}return!e&&this.eat(z.starstar)?this.buildBinary(r,a,i,this.parseMaybeUnary(null,!1),"**",!1):i},dt.parseExprSubscripts=function(t){var e=this.start,i=this.startLoc,s=this.parseExprAtom(t),r="ArrowFunctionExpression"===s.type&&")"!==this.input.slice(this.lastTokStart,this.lastTokEnd);if(this.checkExpressionErrors(t)||r)return s;var a=this.parseSubscripts(s,e,i);return t&&"MemberExpression"===a.type&&(t.parenthesizedAssign>=a.start&&(t.parenthesizedAssign=-1),t.parenthesizedBind>=a.start&&(t.parenthesizedBind=-1)),a},dt.parseSubscripts=function(t,e,i,s){for(var r=this,a=this.options.ecmaVersion>=8&&"Identifier"===t.type&&"async"===t.name&&this.lastTokEnd===t.end&&!this.canInsertSemicolon()&&"async"===this.input.slice(t.start,t.end),n=void 0;;)if((n=r.eat(z.bracketL))||r.eat(z.dot)){var o=r.startNodeAt(e,i);o.object=t,o.property=n?r.parseExpression():r.parseIdent(!0),o.computed=!!n,n&&r.expect(z.bracketR),t=r.finishNode(o,"MemberExpression")}else if(!s&&r.eat(z.parenL)){var h=new l,p=r.yieldPos,c=r.awaitPos;r.yieldPos=0,r.awaitPos=0;var u=r.parseExprList(z.parenR,r.options.ecmaVersion>=8,!1,h);if(a&&!r.canInsertSemicolon()&&r.eat(z.arrow))return r.checkPatternErrors(h,!1),r.checkYieldAwaitInDefaultParams(),r.yieldPos=p,r.awaitPos=c,r.parseArrowExpression(r.startNodeAt(e,i),u,!0);r.checkExpressionErrors(h,!0),r.yieldPos=p||r.yieldPos,r.awaitPos=c||r.awaitPos;var d=r.startNodeAt(e,i);d.callee=t,d.arguments=u,t=r.finishNode(d,"CallExpression")}else{if(r.type!==z.backQuote)return t;var f=r.startNodeAt(e,i);f.tag=t,f.quasi=r.parseTemplate({isTagged:!0}),t=r.finishNode(f,"TaggedTemplateExpression")}},dt.parseExprAtom=function(t){var e,i=this.potentialArrowAt===this.start;switch(this.type){case z._super:return this.inFunction||this.raise(this.start,"'super' outside of function or class"),e=this.startNode(),this.next(),this.type!==z.dot&&this.type!==z.bracketL&&this.type!==z.parenL&&this.unexpected(),this.finishNode(e,"Super");case z._this:return e=this.startNode(),this.next(),this.finishNode(e,"ThisExpression");case z.name:var s=this.start,r=this.startLoc,a=this.containsEsc,n=this.parseIdent(this.type!==z.name);if(this.options.ecmaVersion>=8&&!a&&"async"===n.name&&!this.canInsertSemicolon()&&this.eat(z._function))return this.parseFunction(this.startNodeAt(s,r),!1,!1,!0);if(i&&!this.canInsertSemicolon()){if(this.eat(z.arrow))return this.parseArrowExpression(this.startNodeAt(s,r),[n],!1);if(this.options.ecmaVersion>=8&&"async"===n.name&&this.type===z.name&&!a)return n=this.parseIdent(),!this.canInsertSemicolon()&&this.eat(z.arrow)||this.unexpected(),this.parseArrowExpression(this.startNodeAt(s,r),[n],!0)}return n;case z.regexp:var o=this.value;return e=this.parseLiteral(o.value),e.regex={pattern:o.pattern,flags:o.flags},e;case z.num:case z.string:return this.parseLiteral(this.value);case z._null:case z._true:case z._false:return e=this.startNode(),e.value=this.type===z._null?null:this.type===z._true,e.raw=this.type.keyword,this.next(),this.finishNode(e,"Literal");case z.parenL:var h=this.start,p=this.parseParenAndDistinguishExpression(i);return t&&(t.parenthesizedAssign<0&&!this.isSimpleAssignTarget(p)&&(t.parenthesizedAssign=h),t.parenthesizedBind<0&&(t.parenthesizedBind=h)),p;case z.bracketL:return e=this.startNode(),this.next(),e.elements=this.parseExprList(z.bracketR,!0,!0,t),this.finishNode(e,"ArrayExpression");case z.braceL:return this.parseObj(!1,t);case z._function:return e=this.startNode(),this.next(),this.parseFunction(e,!1);case z._class:return this.parseClass(this.startNode(),!1);case z._new:return this.parseNew();case z.backQuote:return this.parseTemplate();default:this.unexpected()}},dt.parseLiteral=function(t){var e=this.startNode();return e.value=t,e.raw=this.input.slice(this.start,this.end),this.next(),this.finishNode(e,"Literal")},dt.parseParenExpression=function(){this.expect(z.parenL);var t=this.parseExpression();return this.expect(z.parenR),t},dt.parseParenAndDistinguishExpression=function(t){var e,i=this,s=this.start,r=this.startLoc,a=this.options.ecmaVersion>=8;if(this.options.ecmaVersion>=6){this.next();var n,o=this.start,h=this.startLoc,p=[],c=!0,u=!1,d=new l,f=this.yieldPos,m=this.awaitPos;for(this.yieldPos=0,this.awaitPos=0;this.type!==z.parenR;){if(c?c=!1:i.expect(z.comma),a&&i.afterTrailingComma(z.parenR,!0)){u=!0;break}if(i.type===z.ellipsis){n=i.start,p.push(i.parseParenItem(i.parseRestBinding())),i.type===z.comma&&i.raise(i.start,"Comma is not permitted after the rest element");break}p.push(i.parseMaybeAssign(!1,d,i.parseParenItem))}var x=this.start,g=this.startLoc;if(this.expect(z.parenR),t&&!this.canInsertSemicolon()&&this.eat(z.arrow))return this.checkPatternErrors(d,!1),this.checkYieldAwaitInDefaultParams(),this.yieldPos=f,this.awaitPos=m,this.parseParenArrowList(s,r,p);p.length&&!u||this.unexpected(this.lastTokStart),n&&this.unexpected(n),this.checkExpressionErrors(d,!0),this.yieldPos=f||this.yieldPos,this.awaitPos=m||this.awaitPos,p.length>1?(e=this.startNodeAt(o,h),e.expressions=p,this.finishNodeAt(e,"SequenceExpression",x,g)):e=p[0]}else e=this.parseParenExpression();if(this.options.preserveParens){var v=this.startNodeAt(s,r);return v.expression=e,this.finishNode(v,"ParenthesizedExpression")}return e},dt.parseParenItem=function(t){return t},dt.parseParenArrowList=function(t,e,i){return this.parseArrowExpression(this.startNodeAt(t,e),i)};var ft=[];dt.parseNew=function(){var t=this.startNode(),e=this.parseIdent(!0);if(this.options.ecmaVersion>=6&&this.eat(z.dot)){t.meta=e;var i=this.containsEsc;return t.property=this.parseIdent(!0),("target"!==t.property.name||i)&&this.raiseRecoverable(t.property.start,"The only valid meta property for new is new.target"),this.inFunction||this.raiseRecoverable(t.start,"new.target can only be used in functions"),this.finishNode(t,"MetaProperty")}var s=this.start,r=this.startLoc;return t.callee=this.parseSubscripts(this.parseExprAtom(),s,r,!0),this.eat(z.parenL)?t.arguments=this.parseExprList(z.parenR,this.options.ecmaVersion>=8,!1):t.arguments=ft,this.finishNode(t,"NewExpression")},dt.parseTemplateElement=function(t){var e=t.isTagged,i=this.startNode();return this.type===z.invalidTemplate?(e||this.raiseRecoverable(this.start,"Bad escape sequence in untagged template literal"),i.value={raw:this.value,cooked:null}):i.value={raw:this.input.slice(this.start,this.end).replace(/\r\n?/g,"\n"),cooked:this.value},this.next(),i.tail=this.type===z.backQuote,this.finishNode(i,"TemplateElement")},dt.parseTemplate=function(t){var e=this;void 0===t&&(t={});var i=t.isTagged;void 0===i&&(i=!1);var s=this.startNode();this.next(),s.expressions=[];var r=this.parseTemplateElement({isTagged:i});for(s.quasis=[r];!r.tail;)e.expect(z.dollarBraceL),s.expressions.push(e.parseExpression()),e.expect(z.braceR),s.quasis.push(r=e.parseTemplateElement({isTagged:i}));return this.next(),this.finishNode(s,"TemplateLiteral")},dt.isAsyncProp=function(t){return!t.computed&&"Identifier"===t.key.type&&"async"===t.key.name&&(this.type===z.name||this.type===z.num||this.type===z.string||this.type===z.bracketL||this.type.keyword||this.options.ecmaVersion>=9&&this.type===z.star)&&!Q.test(this.input.slice(this.lastTokEnd,this.start))},dt.parseObj=function(t,e){var i=this,s=this.startNode(),r=!0,a={};for(s.properties=[],this.next();!this.eat(z.braceR);){if(r)r=!1;else if(i.expect(z.comma),i.afterTrailingComma(z.braceR))break;var n=i.parseProperty(t,e);t||i.checkPropClash(n,a,e),s.properties.push(n)}return this.finishNode(s,t?"ObjectPattern":"ObjectExpression")},dt.parseProperty=function(t,e){var i,s,r,a,n=this.startNode();if(this.options.ecmaVersion>=9&&this.eat(z.ellipsis))return t?(n.argument=this.parseIdent(!1),this.type===z.comma&&this.raise(this.start,"Comma is not permitted after the rest element"),this.finishNode(n,"RestElement")):(this.type===z.parenL&&e&&(e.parenthesizedAssign<0&&(e.parenthesizedAssign=this.start),e.parenthesizedBind<0&&(e.parenthesizedBind=this.start)),n.argument=this.parseMaybeAssign(!1,e),this.type===z.comma&&e&&e.trailingComma<0&&(e.trailingComma=this.start),this.finishNode(n,"SpreadElement"));this.options.ecmaVersion>=6&&(n.method=!1,n.shorthand=!1,(t||e)&&(r=this.start,a=this.startLoc),t||(i=this.eat(z.star)));var o=this.containsEsc;return this.parsePropertyName(n),!t&&!o&&this.options.ecmaVersion>=8&&!i&&this.isAsyncProp(n)?(s=!0,i=this.options.ecmaVersion>=9&&this.eat(z.star),this.parsePropertyName(n,e)):s=!1,this.parsePropertyValue(n,t,i,s,r,a,e,o),this.finishNode(n,"Property")},dt.parsePropertyValue=function(t,e,i,s,r,a,n,o){if((i||s)&&this.type===z.colon&&this.unexpected(),this.eat(z.colon))t.value=e?this.parseMaybeDefault(this.start,this.startLoc):this.parseMaybeAssign(!1,n),t.kind="init";else if(this.options.ecmaVersion>=6&&this.type===z.parenL)e&&this.unexpected(),t.kind="init",t.method=!0,t.value=this.parseMethod(i,s);else if(e||o||!(this.options.ecmaVersion>=5)||t.computed||"Identifier"!==t.key.type||"get"!==t.key.name&&"set"!==t.key.name||this.type===z.comma||this.type===z.braceR)this.options.ecmaVersion>=6&&!t.computed&&"Identifier"===t.key.type?(this.checkUnreserved(t.key),t.kind="init",e?t.value=this.parseMaybeDefault(r,a,t.key):this.type===z.eq&&n?(n.shorthandAssign<0&&(n.shorthandAssign=this.start),t.value=this.parseMaybeDefault(r,a,t.key)):t.value=t.key,t.shorthand=!0):this.unexpected();else{(i||s)&&this.unexpected(),t.kind=t.key.name,this.parsePropertyName(t),t.value=this.parseMethod(!1);var h="get"===t.kind?0:1;if(t.value.params.length!==h){var p=t.value.start;"get"===t.kind?this.raiseRecoverable(p,"getter should have no params"):this.raiseRecoverable(p,"setter should have exactly one param")}else"set"===t.kind&&"RestElement"===t.value.params[0].type&&this.raiseRecoverable(t.value.params[0].start,"Setter cannot use rest params")}},dt.parsePropertyName=function(t){if(this.options.ecmaVersion>=6){if(this.eat(z.bracketL))return t.computed=!0,t.key=this.parseMaybeAssign(),this.expect(z.bracketR),t.key;t.computed=!1}return t.key=this.type===z.num||this.type===z.string?this.parseExprAtom():this.parseIdent(!0)},dt.initFunction=function(t){t.id=null,this.options.ecmaVersion>=6&&(t.generator=!1,t.expression=!1),this.options.ecmaVersion>=8&&(t.async=!1)},dt.parseMethod=function(t,e){var i=this.startNode(),s=this.inGenerator,r=this.inAsync,a=this.yieldPos,n=this.awaitPos,o=this.inFunction;return this.initFunction(i),this.options.ecmaVersion>=6&&(i.generator=t),this.options.ecmaVersion>=8&&(i.async=!!e),this.inGenerator=i.generator,this.inAsync=i.async,this.yieldPos=0,this.awaitPos=0,this.inFunction=!0,this.enterFunctionScope(),this.expect(z.parenL),i.params=this.parseBindingList(z.parenR,!1,this.options.ecmaVersion>=8),this.checkYieldAwaitInDefaultParams(),this.parseFunctionBody(i,!1),this.inGenerator=s,this.inAsync=r,this.yieldPos=a,this.awaitPos=n,this.inFunction=o,this.finishNode(i,"FunctionExpression")},dt.parseArrowExpression=function(t,e,i){var s=this.inGenerator,r=this.inAsync,a=this.yieldPos,n=this.awaitPos,o=this.inFunction;return this.enterFunctionScope(),this.initFunction(t),this.options.ecmaVersion>=8&&(t.async=!!i),this.inGenerator=!1,this.inAsync=t.async,this.yieldPos=0,this.awaitPos=0,this.inFunction=!0,t.params=this.toAssignableList(e,!0),this.parseFunctionBody(t,!0),this.inGenerator=s,this.inAsync=r,this.yieldPos=a,this.awaitPos=n,this.inFunction=o,this.finishNode(t,"ArrowFunctionExpression")},dt.parseFunctionBody=function(t,e){var i=e&&this.type!==z.braceL,s=this.strict,r=!1;if(i)t.body=this.parseMaybeAssign(),t.expression=!0,this.checkParams(t,!1);else{var a=this.options.ecmaVersion>=7&&!this.isSimpleParamList(t.params);s&&!a||(r=this.strictDirective(this.end))&&a&&this.raiseRecoverable(t.start,"Illegal 'use strict' directive in function with non-simple parameter list");var n=this.labels;this.labels=[],r&&(this.strict=!0),this.checkParams(t,!s&&!r&&!e&&this.isSimpleParamList(t.params)),t.body=this.parseBlock(!1),t.expression=!1,this.adaptDirectivePrologue(t.body.body),this.labels=n}this.exitFunctionScope(),this.strict&&t.id&&this.checkLVal(t.id,"none"),this.strict=s},dt.isSimpleParamList=function(t){for(var e=0,i=t;e<i.length;e+=1){if("Identifier"!==i[e].type)return!1}return!0},dt.checkParams=function(t,e){for(var i=this,s={},r=0,a=t.params;r<a.length;r+=1){var n=a[r];i.checkLVal(n,"var",e?null:s)}},dt.parseExprList=function(t,e,i,s){for(var r=this,a=[],n=!0;!this.eat(t);){if(n)n=!1;else if(r.expect(z.comma),e&&r.afterTrailingComma(t))break;var o=void 0;i&&r.type===z.comma?o=null:r.type===z.ellipsis?(o=r.parseSpread(s),s&&r.type===z.comma&&s.trailingComma<0&&(s.trailingComma=r.start)):o=r.parseMaybeAssign(!1,s),a.push(o)}return a},dt.checkUnreserved=function(t){var e=t.start,i=t.end,s=t.name;if(this.inGenerator&&"yield"===s&&this.raiseRecoverable(e,"Can not use 'yield' as identifier inside a generator"),this.inAsync&&"await"===s&&this.raiseRecoverable(e,"Can not use 'await' as identifier inside an async function"),this.isKeyword(s)&&this.raise(e,"Unexpected keyword '"+s+"'"),!(this.options.ecmaVersion<6&&-1!==this.input.slice(e,i).indexOf("\\"))){(this.strict?this.reservedWordsStrict:this.reservedWords).test(s)&&(this.inAsync||"await"!==s||this.raiseRecoverable(e,"Can not use keyword 'await' outside an async function"),this.raiseRecoverable(e,"The keyword '"+s+"' is reserved"))}},dt.parseIdent=function(t,e){var i=this.startNode();return t&&"never"===this.options.allowReserved&&(t=!1),this.type===z.name?i.name=this.value:this.type.keyword?(i.name=this.type.keyword,"class"!==i.name&&"function"!==i.name||this.lastTokEnd===this.lastTokStart+1&&46===this.input.charCodeAt(this.lastTokStart)||this.context.pop()):this.unexpected(),this.next(),this.finishNode(i,"Identifier"),t||this.checkUnreserved(i),i},dt.parseYield=function(){this.yieldPos||(this.yieldPos=this.start);var t=this.startNode();return this.next(),this.type===z.semi||this.canInsertSemicolon()||this.type!==z.star&&!this.type.startsExpr?(t.delegate=!1,t.argument=null):(t.delegate=this.eat(z.star),t.argument=this.parseMaybeAssign()),this.finishNode(t,"YieldExpression")},dt.parseAwait=function(){this.awaitPos||(this.awaitPos=this.start);var t=this.startNode();return this.next(),t.argument=this.parseMaybeUnary(null,!0),this.finishNode(t,"AwaitExpression")};var mt=at.prototype;mt.raise=function(t,e){var i=h(this.input,t);e+=" ("+i.line+":"+i.column+")";var s=new SyntaxError(e);throw s.pos=t,s.loc=i,s.raisedAt=this.pos,s},mt.raiseRecoverable=mt.raise,mt.curPosition=function(){if(this.options.locations)return new et(this.curLine,this.pos-this.lineStart)};var xt=at.prototype,gt=Object.assign||function(t){for(var e=[],i=arguments.length-1;i-- >0;)e[i]=arguments[i+1];for(var s=0,r=e;s<r.length;s+=1){var a=r[s];for(var n in a)o(a,n)&&(t[n]=a[n])}return t};xt.enterFunctionScope=function(){this.scopeStack.push({var:{},lexical:{},childVar:{},parentLexical:{}})},xt.exitFunctionScope=function(){this.scopeStack.pop()},xt.enterLexicalScope=function(){var t=this.scopeStack[this.scopeStack.length-1],e={var:{},lexical:{},childVar:{},parentLexical:{}};this.scopeStack.push(e),gt(e.parentLexical,t.lexical,t.parentLexical)},xt.exitLexicalScope=function(){var t=this.scopeStack.pop(),e=this.scopeStack[this.scopeStack.length-1];gt(e.childVar,t.var,t.childVar)},xt.canDeclareVarName=function(t){var e=this.scopeStack[this.scopeStack.length-1];return!o(e.lexical,t)&&!o(e.parentLexical,t)},xt.canDeclareLexicalName=function(t){var e=this.scopeStack[this.scopeStack.length-1];return!o(e.lexical,t)&&!o(e.var,t)&&!o(e.childVar,t)},xt.declareVarName=function(t){this.scopeStack[this.scopeStack.length-1].var[t]=!0},xt.declareLexicalName=function(t){this.scopeStack[this.scopeStack.length-1].lexical[t]=!0};var vt=function(t,e,i){this.type="",this.start=e,this.end=0,t.options.locations&&(this.loc=new it(t,i)),t.options.directSourceFile&&(this.sourceFile=t.options.directSourceFile),t.options.ranges&&(this.range=[e,0])},yt=at.prototype;yt.startNode=function(){return new vt(this,this.start,this.startLoc)},yt.startNodeAt=function(t,e){return new vt(this,t,e)},yt.finishNode=function(t,e){return d.call(this,t,e,this.lastTokEnd,this.lastTokEndLoc)},yt.finishNodeAt=function(t,e,i,s){return d.call(this,t,e,i,s)};var _t=function(t,e,i,s,r){this.token=t,this.isExpr=!!e,this.preserveSpace=!!i,this.override=s,this.generator=!!r},bt={b_stat:new _t("{",!1),b_expr:new _t("{",!0),b_tmpl:new _t("${",!1),p_stat:new _t("(",!1),p_expr:new _t("(",!0),q_tmpl:new _t("`",!0,!0,function(t){return t.tryReadTemplateToken()}),f_stat:new _t("function",!1),f_expr:new _t("function",!0),f_expr_gen:new _t("function",!0,!1,null,!0),f_gen:new _t("function",!1,!1,null,!0)},kt=at.prototype;kt.initialContext=function(){return[bt.b_stat]},kt.braceIsBlock=function(t){var e=this.curContext();return e===bt.f_expr||e===bt.f_stat||(t!==z.colon||e!==bt.b_stat&&e!==bt.b_expr?t===z._return||t===z.name&&this.exprAllowed?Q.test(this.input.slice(this.lastTokEnd,this.start)):t===z._else||t===z.semi||t===z.eof||t===z.parenR||t===z.arrow||(t===z.braceL?e===bt.b_stat:t!==z._var&&t!==z.name&&!this.exprAllowed):!e.isExpr)},kt.inGeneratorContext=function(){for(var t=this,e=this.context.length-1;e>=1;e--){var i=t.context[e];if("function"===i.token)return i.generator}return!1},kt.updateContext=function(t){var e,i=this.type;i.keyword&&t===z.dot?this.exprAllowed=!1:(e=i.updateContext)?e.call(this,t):this.exprAllowed=i.beforeExpr},z.parenR.updateContext=z.braceR.updateContext=function(){if(1===this.context.length)return void(this.exprAllowed=!0);var t=this.context.pop();t===bt.b_stat&&"function"===this.curContext().token&&(t=this.context.pop()),this.exprAllowed=!t.isExpr},z.braceL.updateContext=function(t){this.context.push(this.braceIsBlock(t)?bt.b_stat:bt.b_expr),this.exprAllowed=!0},z.dollarBraceL.updateContext=function(){this.context.push(bt.b_tmpl),this.exprAllowed=!0},z.parenL.updateContext=function(t){var e=t===z._if||t===z._for||t===z._with||t===z._while;this.context.push(e?bt.p_stat:bt.p_expr),this.exprAllowed=!0},z.incDec.updateContext=function(){},z._function.updateContext=z._class.updateContext=function(t){t.beforeExpr&&t!==z.semi&&t!==z._else&&(t!==z.colon&&t!==z.braceL||this.curContext()!==bt.b_stat)?this.context.push(bt.f_expr):this.context.push(bt.f_stat),this.exprAllowed=!1},z.backQuote.updateContext=function(){this.curContext()===bt.q_tmpl?this.context.pop():this.context.push(bt.q_tmpl),this.exprAllowed=!1},z.star.updateContext=function(t){if(t===z._function){var e=this.context.length-1;this.context[e]===bt.f_expr?this.context[e]=bt.f_expr_gen:this.context[e]=bt.f_gen}this.exprAllowed=!0},z.name.updateContext=function(t){var e=!1;this.options.ecmaVersion>=6&&("of"===this.value&&!this.exprAllowed||"yield"===this.value&&this.inGeneratorContext())&&(e=!0),this.exprAllowed=e};var Ct={$LONE:["ASCII","ASCII_Hex_Digit","AHex","Alphabetic","Alpha","Any","Assigned","Bidi_Control","Bidi_C","Bidi_Mirrored","Bidi_M","Case_Ignorable","CI","Cased","Changes_When_Casefolded","CWCF","Changes_When_Casemapped","CWCM","Changes_When_Lowercased","CWL","Changes_When_NFKC_Casefolded","CWKCF","Changes_When_Titlecased","CWT","Changes_When_Uppercased","CWU","Dash","Default_Ignorable_Code_Point","DI","Deprecated","Dep","Diacritic","Dia","Emoji","Emoji_Component","Emoji_Modifier","Emoji_Modifier_Base","Emoji_Presentation","Extender","Ext","Grapheme_Base","Gr_Base","Grapheme_Extend","Gr_Ext","Hex_Digit","Hex","IDS_Binary_Operator","IDSB","IDS_Trinary_Operator","IDST","ID_Continue","IDC","ID_Start","IDS","Ideographic","Ideo","Join_Control","Join_C","Logical_Order_Exception","LOE","Lowercase","Lower","Math","Noncharacter_Code_Point","NChar","Pattern_Syntax","Pat_Syn","Pattern_White_Space","Pat_WS","Quotation_Mark","QMark","Radical","Regional_Indicator","RI","Sentence_Terminal","STerm","Soft_Dotted","SD","Terminal_Punctuation","Term","Unified_Ideograph","UIdeo","Uppercase","Upper","Variation_Selector","VS","White_Space","space","XID_Continue","XIDC","XID_Start","XIDS"],General_Category:["Cased_Letter","LC","Close_Punctuation","Pe","Connector_Punctuation","Pc","Control","Cc","cntrl","Currency_Symbol","Sc","Dash_Punctuation","Pd","Decimal_Number","Nd","digit","Enclosing_Mark","Me","Final_Punctuation","Pf","Format","Cf","Initial_Punctuation","Pi","Letter","L","Letter_Number","Nl","Line_Separator","Zl","Lowercase_Letter","Ll","Mark","M","Combining_Mark","Math_Symbol","Sm","Modifier_Letter","Lm","Modifier_Symbol","Sk","Nonspacing_Mark","Mn","Number","N","Open_Punctuation","Ps","Other","C","Other_Letter","Lo","Other_Number","No","Other_Punctuation","Po","Other_Symbol","So","Paragraph_Separator","Zp","Private_Use","Co","Punctuation","P","punct","Separator","Z","Space_Separator","Zs","Spacing_Mark","Mc","Surrogate","Cs","Symbol","S","Titlecase_Letter","Lt","Unassigned","Cn","Uppercase_Letter","Lu"],Script:["Adlam","Adlm","Ahom","Anatolian_Hieroglyphs","Hluw","Arabic","Arab","Armenian","Armn","Avestan","Avst","Balinese","Bali","Bamum","Bamu","Bassa_Vah","Bass","Batak","Batk","Bengali","Beng","Bhaiksuki","Bhks","Bopomofo","Bopo","Brahmi","Brah","Braille","Brai","Buginese","Bugi","Buhid","Buhd","Canadian_Aboriginal","Cans","Carian","Cari","Caucasian_Albanian","Aghb","Chakma","Cakm","Cham","Cherokee","Cher","Common","Zyyy","Coptic","Copt","Qaac","Cuneiform","Xsux","Cypriot","Cprt","Cyrillic","Cyrl","Deseret","Dsrt","Devanagari","Deva","Duployan","Dupl","Egyptian_Hieroglyphs","Egyp","Elbasan","Elba","Ethiopic","Ethi","Georgian","Geor","Glagolitic","Glag","Gothic","Goth","Grantha","Gran","Greek","Grek","Gujarati","Gujr","Gurmukhi","Guru","Han","Hani","Hangul","Hang","Hanunoo","Hano","Hatran","Hatr","Hebrew","Hebr","Hiragana","Hira","Imperial_Aramaic","Armi","Inherited","Zinh","Qaai","Inscriptional_Pahlavi","Phli","Inscriptional_Parthian","Prti","Javanese","Java","Kaithi","Kthi","Kannada","Knda","Katakana","Kana","Kayah_Li","Kali","Kharoshthi","Khar","Khmer","Khmr","Khojki","Khoj","Khudawadi","Sind","Lao","Laoo","Latin","Latn","Lepcha","Lepc","Limbu","Limb","Linear_A","Lina","Linear_B","Linb","Lisu","Lycian","Lyci","Lydian","Lydi","Mahajani","Mahj","Malayalam","Mlym","Mandaic","Mand","Manichaean","Mani","Marchen","Marc","Masaram_Gondi","Gonm","Meetei_Mayek","Mtei","Mende_Kikakui","Mend","Meroitic_Cursive","Merc","Meroitic_Hieroglyphs","Mero","Miao","Plrd","Modi","Mongolian","Mong","Mro","Mroo","Multani","Mult","Myanmar","Mymr","Nabataean","Nbat","New_Tai_Lue","Talu","Newa","Nko","Nkoo","Nushu","Nshu","Ogham","Ogam","Ol_Chiki","Olck","Old_Hungarian","Hung","Old_Italic","Ital","Old_North_Arabian","Narb","Old_Permic","Perm","Old_Persian","Xpeo","Old_South_Arabian","Sarb","Old_Turkic","Orkh","Oriya","Orya","Osage","Osge","Osmanya","Osma","Pahawh_Hmong","Hmng","Palmyrene","Palm","Pau_Cin_Hau","Pauc","Phags_Pa","Phag","Phoenician","Phnx","Psalter_Pahlavi","Phlp","Rejang","Rjng","Runic","Runr","Samaritan","Samr","Saurashtra","Saur","Sharada","Shrd","Shavian","Shaw","Siddham","Sidd","SignWriting","Sgnw","Sinhala","Sinh","Sora_Sompeng","Sora","Soyombo","Soyo","Sundanese","Sund","Syloti_Nagri","Sylo","Syriac","Syrc","Tagalog","Tglg","Tagbanwa","Tagb","Tai_Le","Tale","Tai_Tham","Lana","Tai_Viet","Tavt","Takri","Takr","Tamil","Taml","Tangut","Tang","Telugu","Telu","Thaana","Thaa","Thai","Tibetan","Tibt","Tifinagh","Tfng","Tirhuta","Tirh","Ugaritic","Ugar","Vai","Vaii","Warang_Citi","Wara","Yi","Yiii","Zanabazar_Square","Zanb"]};Array.prototype.push.apply(Ct.$LONE,Ct.General_Category),Ct.gc=Ct.General_Category,Ct.sc=Ct.Script_Extensions=Ct.scx=Ct.Script;var St=at.prototype,Et=function(t){this.parser=t,this.validFlags="gim"+(t.options.ecmaVersion>=6?"uy":"")+(t.options.ecmaVersion>=9?"s":""),this.source="",this.flags="",this.start=0,this.switchU=!1,this.switchN=!1,this.pos=0,this.lastIntValue=0,this.lastStringValue="",this.lastAssertionIsQuantifiable=!1,this.numCapturingParens=0,this.maxBackReference=0,this.groupNames=[],this.backReferenceNames=[]};Et.prototype.reset=function(t,e,i){var s=-1!==i.indexOf("u");this.start=0|t,this.source=e+"",this.flags=i,this.switchU=s&&this.parser.options.ecmaVersion>=6,this.switchN=s&&this.parser.options.ecmaVersion>=9},Et.prototype.raise=function(t){this.parser.raiseRecoverable(this.start,"Invalid regular expression: /"+this.source+"/: "+t)},Et.prototype.at=function(t){var e=this.source,i=e.length;if(t>=i)return-1;var s=e.charCodeAt(t);return!this.switchU||s<=55295||s>=57344||t+1>=i?s:(s<<10)+e.charCodeAt(t+1)-56613888},
 Et.prototype.nextIndex=function(t){var e=this.source,i=e.length;if(t>=i)return i;var s=e.charCodeAt(t);return!this.switchU||s<=55295||s>=57344||t+1>=i?t+1:t+2},Et.prototype.current=function(){return this.at(this.pos)},Et.prototype.lookahead=function(){return this.at(this.nextIndex(this.pos))},Et.prototype.advance=function(){this.pos=this.nextIndex(this.pos)},Et.prototype.eat=function(t){return this.current()===t&&(this.advance(),!0)},St.validateRegExpFlags=function(t){for(var e=this,i=t.validFlags,s=t.flags,r=0;r<s.length;r++){var a=s.charAt(r);-1===i.indexOf(a)&&e.raise(t.start,"Invalid regular expression flag"),s.indexOf(a,r+1)>-1&&e.raise(t.start,"Duplicate regular expression flag")}},St.validateRegExpPattern=function(t){this.regexp_pattern(t),!t.switchN&&this.options.ecmaVersion>=9&&t.groupNames.length>0&&(t.switchN=!0,this.regexp_pattern(t))},St.regexp_pattern=function(t){t.pos=0,t.lastIntValue=0,t.lastStringValue="",t.lastAssertionIsQuantifiable=!1,t.numCapturingParens=0,t.maxBackReference=0,t.groupNames.length=0,t.backReferenceNames.length=0,this.regexp_disjunction(t),t.pos!==t.source.length&&(t.eat(41)&&t.raise("Unmatched ')'"),(t.eat(93)||t.eat(125))&&t.raise("Lone quantifier brackets")),t.maxBackReference>t.numCapturingParens&&t.raise("Invalid escape");for(var e=0,i=t.backReferenceNames;e<i.length;e+=1){var s=i[e];-1===t.groupNames.indexOf(s)&&t.raise("Invalid named capture referenced")}},St.regexp_disjunction=function(t){var e=this;for(this.regexp_alternative(t);t.eat(124);)e.regexp_alternative(t);this.regexp_eatQuantifier(t,!0)&&t.raise("Nothing to repeat"),t.eat(123)&&t.raise("Lone quantifier brackets")},St.regexp_alternative=function(t){for(;t.pos<t.source.length&&this.regexp_eatTerm(t););},St.regexp_eatTerm=function(t){return this.regexp_eatAssertion(t)?(t.lastAssertionIsQuantifiable&&this.regexp_eatQuantifier(t)&&t.switchU&&t.raise("Invalid quantifier"),!0):!(t.switchU?!this.regexp_eatAtom(t):!this.regexp_eatExtendedAtom(t))&&(this.regexp_eatQuantifier(t),!0)},St.regexp_eatAssertion=function(t){var e=t.pos;if(t.lastAssertionIsQuantifiable=!1,t.eat(94)||t.eat(36))return!0;if(t.eat(92)){if(t.eat(66)||t.eat(98))return!0;t.pos=e}if(t.eat(40)&&t.eat(63)){var i=!1;if(this.options.ecmaVersion>=9&&(i=t.eat(60)),t.eat(61)||t.eat(33))return this.regexp_disjunction(t),t.eat(41)||t.raise("Unterminated group"),t.lastAssertionIsQuantifiable=!i,!0}return t.pos=e,!1},St.regexp_eatQuantifier=function(t,e){return void 0===e&&(e=!1),!!this.regexp_eatQuantifierPrefix(t,e)&&(t.eat(63),!0)},St.regexp_eatQuantifierPrefix=function(t,e){return t.eat(42)||t.eat(43)||t.eat(63)||this.regexp_eatBracedQuantifier(t,e)},St.regexp_eatBracedQuantifier=function(t,e){var i=t.pos;if(t.eat(123)){var s=0,r=-1;if(this.regexp_eatDecimalDigits(t)&&(s=t.lastIntValue,t.eat(44)&&this.regexp_eatDecimalDigits(t)&&(r=t.lastIntValue),t.eat(125)))return-1!==r&&r<s&&!e&&t.raise("numbers out of order in {} quantifier"),!0;t.switchU&&!e&&t.raise("Incomplete quantifier"),t.pos=i}return!1},St.regexp_eatAtom=function(t){return this.regexp_eatPatternCharacters(t)||t.eat(46)||this.regexp_eatReverseSolidusAtomEscape(t)||this.regexp_eatCharacterClass(t)||this.regexp_eatUncapturingGroup(t)||this.regexp_eatCapturingGroup(t)},St.regexp_eatReverseSolidusAtomEscape=function(t){var e=t.pos;if(t.eat(92)){if(this.regexp_eatAtomEscape(t))return!0;t.pos=e}return!1},St.regexp_eatUncapturingGroup=function(t){var e=t.pos;if(t.eat(40)){if(t.eat(63)&&t.eat(58)){if(this.regexp_disjunction(t),t.eat(41))return!0;t.raise("Unterminated group")}t.pos=e}return!1},St.regexp_eatCapturingGroup=function(t){if(t.eat(40)){if(this.options.ecmaVersion>=9?this.regexp_groupSpecifier(t):63===t.current()&&t.raise("Invalid group"),this.regexp_disjunction(t),t.eat(41))return t.numCapturingParens+=1,!0;t.raise("Unterminated group")}return!1},St.regexp_eatExtendedAtom=function(t){return t.eat(46)||this.regexp_eatReverseSolidusAtomEscape(t)||this.regexp_eatCharacterClass(t)||this.regexp_eatUncapturingGroup(t)||this.regexp_eatCapturingGroup(t)||this.regexp_eatInvalidBracedQuantifier(t)||this.regexp_eatExtendedPatternCharacter(t)},St.regexp_eatInvalidBracedQuantifier=function(t){return this.regexp_eatBracedQuantifier(t,!0)&&t.raise("Nothing to repeat"),!1},St.regexp_eatSyntaxCharacter=function(t){var e=t.current();return!!m(e)&&(t.lastIntValue=e,t.advance(),!0)},St.regexp_eatPatternCharacters=function(t){for(var e=t.pos,i=0;-1!==(i=t.current())&&!m(i);)t.advance();return t.pos!==e},St.regexp_eatExtendedPatternCharacter=function(t){var e=t.current();return!(-1===e||36===e||e>=40&&e<=43||46===e||63===e||91===e||94===e||124===e)&&(t.advance(),!0)},St.regexp_groupSpecifier=function(t){if(t.eat(63)){if(this.regexp_eatGroupName(t))return-1!==t.groupNames.indexOf(t.lastStringValue)&&t.raise("Duplicate capture group name"),void t.groupNames.push(t.lastStringValue);t.raise("Invalid group")}},St.regexp_eatGroupName=function(t){if(t.lastStringValue="",t.eat(60)){if(this.regexp_eatRegExpIdentifierName(t)&&t.eat(62))return!0;t.raise("Invalid capture group name")}return!1},St.regexp_eatRegExpIdentifierName=function(t){if(t.lastStringValue="",this.regexp_eatRegExpIdentifierStart(t)){for(t.lastStringValue+=f(t.lastIntValue);this.regexp_eatRegExpIdentifierPart(t);)t.lastStringValue+=f(t.lastIntValue);return!0}return!1},St.regexp_eatRegExpIdentifierStart=function(t){var e=t.pos,i=t.current();return t.advance(),92===i&&this.regexp_eatRegExpUnicodeEscapeSequence(t)&&(i=t.lastIntValue),x(i)?(t.lastIntValue=i,!0):(t.pos=e,!1)},St.regexp_eatRegExpIdentifierPart=function(t){var e=t.pos,i=t.current();return t.advance(),92===i&&this.regexp_eatRegExpUnicodeEscapeSequence(t)&&(i=t.lastIntValue),g(i)?(t.lastIntValue=i,!0):(t.pos=e,!1)},St.regexp_eatAtomEscape=function(t){return!!(this.regexp_eatBackReference(t)||this.regexp_eatCharacterClassEscape(t)||this.regexp_eatCharacterEscape(t)||t.switchN&&this.regexp_eatKGroupName(t))||(t.switchU&&(99===t.current()&&t.raise("Invalid unicode escape"),t.raise("Invalid escape")),!1)},St.regexp_eatBackReference=function(t){var e=t.pos;if(this.regexp_eatDecimalEscape(t)){var i=t.lastIntValue;if(t.switchU)return i>t.maxBackReference&&(t.maxBackReference=i),!0;if(i<=t.numCapturingParens)return!0;t.pos=e}return!1},St.regexp_eatKGroupName=function(t){if(t.eat(107)){if(this.regexp_eatGroupName(t))return t.backReferenceNames.push(t.lastStringValue),!0;t.raise("Invalid named reference")}return!1},St.regexp_eatCharacterEscape=function(t){return this.regexp_eatControlEscape(t)||this.regexp_eatCControlLetter(t)||this.regexp_eatZero(t)||this.regexp_eatHexEscapeSequence(t)||this.regexp_eatRegExpUnicodeEscapeSequence(t)||!t.switchU&&this.regexp_eatLegacyOctalEscapeSequence(t)||this.regexp_eatIdentityEscape(t)},St.regexp_eatCControlLetter=function(t){var e=t.pos;if(t.eat(99)){if(this.regexp_eatControlLetter(t))return!0;t.pos=e}return!1},St.regexp_eatZero=function(t){return 48===t.current()&&!C(t.lookahead())&&(t.lastIntValue=0,t.advance(),!0)},St.regexp_eatControlEscape=function(t){var e=t.current();return 116===e?(t.lastIntValue=9,t.advance(),!0):110===e?(t.lastIntValue=10,t.advance(),!0):118===e?(t.lastIntValue=11,t.advance(),!0):102===e?(t.lastIntValue=12,t.advance(),!0):114===e&&(t.lastIntValue=13,t.advance(),!0)},St.regexp_eatControlLetter=function(t){var e=t.current();return!!v(e)&&(t.lastIntValue=e%32,t.advance(),!0)},St.regexp_eatRegExpUnicodeEscapeSequence=function(t){var e=t.pos;if(t.eat(117)){if(this.regexp_eatFixedHexDigits(t,4)){var i=t.lastIntValue;if(t.switchU&&i>=55296&&i<=56319){var s=t.pos;if(t.eat(92)&&t.eat(117)&&this.regexp_eatFixedHexDigits(t,4)){var r=t.lastIntValue;if(r>=56320&&r<=57343)return t.lastIntValue=1024*(i-55296)+(r-56320)+65536,!0}t.pos=s,t.lastIntValue=i}return!0}if(t.switchU&&t.eat(123)&&this.regexp_eatHexDigits(t)&&t.eat(125)&&y(t.lastIntValue))return!0;t.switchU&&t.raise("Invalid unicode escape"),t.pos=e}return!1},St.regexp_eatIdentityEscape=function(t){if(t.switchU)return!!this.regexp_eatSyntaxCharacter(t)||!!t.eat(47)&&(t.lastIntValue=47,!0);var e=t.current();return!(99===e||t.switchN&&107===e)&&(t.lastIntValue=e,t.advance(),!0)},St.regexp_eatDecimalEscape=function(t){t.lastIntValue=0;var e=t.current();if(e>=49&&e<=57){do{t.lastIntValue=10*t.lastIntValue+(e-48),t.advance()}while((e=t.current())>=48&&e<=57);return!0}return!1},St.regexp_eatCharacterClassEscape=function(t){var e=t.current();if(_(e))return t.lastIntValue=-1,t.advance(),!0;if(t.switchU&&this.options.ecmaVersion>=9&&(80===e||112===e)){if(t.lastIntValue=-1,t.advance(),t.eat(123)&&this.regexp_eatUnicodePropertyValueExpression(t)&&t.eat(125))return!0;t.raise("Invalid property name")}return!1},St.regexp_eatUnicodePropertyValueExpression=function(t){var e=t.pos;if(this.regexp_eatUnicodePropertyName(t)&&t.eat(61)){var i=t.lastStringValue;if(this.regexp_eatUnicodePropertyValue(t)){var s=t.lastStringValue;return this.regexp_validateUnicodePropertyNameAndValue(t,i,s),!0}}if(t.pos=e,this.regexp_eatLoneUnicodePropertyNameOrValue(t)){var r=t.lastStringValue;return this.regexp_validateUnicodePropertyNameOrValue(t,r),!0}return!1},St.regexp_validateUnicodePropertyNameAndValue=function(t,e,i){Ct.hasOwnProperty(e)&&-1!==Ct[e].indexOf(i)||t.raise("Invalid property name")},St.regexp_validateUnicodePropertyNameOrValue=function(t,e){-1===Ct.$LONE.indexOf(e)&&t.raise("Invalid property name")},St.regexp_eatUnicodePropertyName=function(t){var e=0;for(t.lastStringValue="";b(e=t.current());)t.lastStringValue+=f(e),t.advance();return""!==t.lastStringValue},St.regexp_eatUnicodePropertyValue=function(t){var e=0;for(t.lastStringValue="";k(e=t.current());)t.lastStringValue+=f(e),t.advance();return""!==t.lastStringValue},St.regexp_eatLoneUnicodePropertyNameOrValue=function(t){return this.regexp_eatUnicodePropertyValue(t)},St.regexp_eatCharacterClass=function(t){if(t.eat(91)){if(t.eat(94),this.regexp_classRanges(t),t.eat(93))return!0;t.raise("Unterminated character class")}return!1},St.regexp_classRanges=function(t){for(var e=this;this.regexp_eatClassAtom(t);){var i=t.lastIntValue;if(t.eat(45)&&e.regexp_eatClassAtom(t)){var s=t.lastIntValue;!t.switchU||-1!==i&&-1!==s||t.raise("Invalid character class"),-1!==i&&-1!==s&&i>s&&t.raise("Range out of order in character class")}}},St.regexp_eatClassAtom=function(t){var e=t.pos;if(t.eat(92)){if(this.regexp_eatClassEscape(t))return!0;if(t.switchU){var i=t.current();(99===i||w(i))&&t.raise("Invalid class escape"),t.raise("Invalid escape")}t.pos=e}var s=t.current();return 93!==s&&(t.lastIntValue=s,t.advance(),!0)},St.regexp_eatClassEscape=function(t){var e=t.pos;if(t.eat(98))return t.lastIntValue=8,!0;if(t.switchU&&t.eat(45))return t.lastIntValue=45,!0;if(!t.switchU&&t.eat(99)){if(this.regexp_eatClassControlLetter(t))return!0;t.pos=e}return this.regexp_eatCharacterClassEscape(t)||this.regexp_eatCharacterEscape(t)},St.regexp_eatClassControlLetter=function(t){var e=t.current();return!(!C(e)&&95!==e)&&(t.lastIntValue=e%32,t.advance(),!0)},St.regexp_eatHexEscapeSequence=function(t){var e=t.pos;if(t.eat(120)){if(this.regexp_eatFixedHexDigits(t,2))return!0;t.switchU&&t.raise("Invalid escape"),t.pos=e}return!1},St.regexp_eatDecimalDigits=function(t){var e=t.pos,i=0;for(t.lastIntValue=0;C(i=t.current());)t.lastIntValue=10*t.lastIntValue+(i-48),t.advance();return t.pos!==e},St.regexp_eatHexDigits=function(t){var e=t.pos,i=0;for(t.lastIntValue=0;S(i=t.current());)t.lastIntValue=16*t.lastIntValue+E(i),t.advance();return t.pos!==e},St.regexp_eatLegacyOctalEscapeSequence=function(t){if(this.regexp_eatOctalDigit(t)){var e=t.lastIntValue;if(this.regexp_eatOctalDigit(t)){var i=t.lastIntValue;e<=3&&this.regexp_eatOctalDigit(t)?t.lastIntValue=64*e+8*i+t.lastIntValue:t.lastIntValue=8*e+i}else t.lastIntValue=e;return!0}return!1},St.regexp_eatOctalDigit=function(t){var e=t.current();return w(e)?(t.lastIntValue=e-48,t.advance(),!0):(t.lastIntValue=0,!1)},St.regexp_eatFixedHexDigits=function(t,e){var i=t.pos;t.lastIntValue=0;for(var s=0;s<e;++s){var r=t.current();if(!S(r))return t.pos=i,!1;t.lastIntValue=16*t.lastIntValue+E(r),t.advance()}return!0};var wt=function(t){this.type=t.type,this.value=t.value,this.start=t.start,this.end=t.end,t.options.locations&&(this.loc=new it(t,t.startLoc,t.endLoc)),t.options.ranges&&(this.range=[t.start,t.end])},At=at.prototype;At.next=function(){this.options.onToken&&this.options.onToken(new wt(this)),this.lastTokEnd=this.end,this.lastTokStart=this.start,this.lastTokEndLoc=this.endLoc,this.lastTokStartLoc=this.startLoc,this.nextToken()},At.getToken=function(){return this.next(),new wt(this)},"undefined"!=typeof Symbol&&(At[Symbol.iterator]=function(){var t=this;return{next:function(){var e=t.getToken();return{done:e.type===z.eof,value:e}}}}),At.curContext=function(){return this.context[this.context.length-1]},At.nextToken=function(){var t=this.curContext();return t&&t.preserveSpace||this.skipSpace(),this.start=this.pos,this.options.locations&&(this.startLoc=this.curPosition()),this.pos>=this.input.length?this.finishToken(z.eof):t.override?t.override(this):void this.readToken(this.fullCharCodeAtPos())},At.readToken=function(t){return i(t,this.options.ecmaVersion>=6)||92===t?this.readWord():this.getTokenFromCode(t)},At.fullCharCodeAtPos=function(){var t=this.input.charCodeAt(this.pos);return t<=55295||t>=57344?t:(t<<10)+this.input.charCodeAt(this.pos+1)-56613888},At.skipBlockComment=function(){var t=this,e=this.options.onComment&&this.curPosition(),i=this.pos,s=this.input.indexOf("*/",this.pos+=2);if(-1===s&&this.raise(this.pos-2,"Unterminated comment"),this.pos=s+2,this.options.locations){K.lastIndex=i;for(var r;(r=K.exec(this.input))&&r.index<this.pos;)++t.curLine,t.lineStart=r.index+r[0].length}this.options.onComment&&this.options.onComment(!0,this.input.slice(i+2,s),i,this.pos,e,this.curPosition())},At.skipLineComment=function(t){for(var e=this,i=this.pos,s=this.options.onComment&&this.curPosition(),r=this.input.charCodeAt(this.pos+=t);this.pos<this.input.length&&!n(r);)r=e.input.charCodeAt(++e.pos);this.options.onComment&&this.options.onComment(!1,this.input.slice(i+t,this.pos),i,this.pos,s,this.curPosition())},At.skipSpace=function(){var t=this;t:for(;this.pos<this.input.length;){var e=t.input.charCodeAt(t.pos);switch(e){case 32:case 160:++t.pos;break;case 13:10===t.input.charCodeAt(t.pos+1)&&++t.pos;case 10:case 8232:case 8233:++t.pos,t.options.locations&&(++t.curLine,t.lineStart=t.pos);break;case 47:switch(t.input.charCodeAt(t.pos+1)){case 42:t.skipBlockComment();break;case 47:t.skipLineComment(2);break;default:break t}break;default:if(!(e>8&&e<14||e>=5760&&X.test(String.fromCharCode(e))))break t;++t.pos}}},At.finishToken=function(t,e){this.end=this.pos,this.options.locations&&(this.endLoc=this.curPosition());var i=this.type;this.type=t,this.value=e,this.updateContext(i)},At.readToken_dot=function(){var t=this.input.charCodeAt(this.pos+1);if(t>=48&&t<=57)return this.readNumber(!0);var e=this.input.charCodeAt(this.pos+2);return this.options.ecmaVersion>=6&&46===t&&46===e?(this.pos+=3,this.finishToken(z.ellipsis)):(++this.pos,this.finishToken(z.dot))},At.readToken_slash=function(){var t=this.input.charCodeAt(this.pos+1);return this.exprAllowed?(++this.pos,this.readRegexp()):61===t?this.finishOp(z.assign,2):this.finishOp(z.slash,1)},At.readToken_mult_modulo_exp=function(t){var e=this.input.charCodeAt(this.pos+1),i=1,s=42===t?z.star:z.modulo;return this.options.ecmaVersion>=7&&42===t&&42===e&&(++i,s=z.starstar,e=this.input.charCodeAt(this.pos+2)),61===e?this.finishOp(z.assign,i+1):this.finishOp(s,i)},At.readToken_pipe_amp=function(t){var e=this.input.charCodeAt(this.pos+1);return e===t?this.finishOp(124===t?z.logicalOR:z.logicalAND,2):61===e?this.finishOp(z.assign,2):this.finishOp(124===t?z.bitwiseOR:z.bitwiseAND,1)},At.readToken_caret=function(){return 61===this.input.charCodeAt(this.pos+1)?this.finishOp(z.assign,2):this.finishOp(z.bitwiseXOR,1)},At.readToken_plus_min=function(t){var e=this.input.charCodeAt(this.pos+1);return e===t?45!==e||this.inModule||62!==this.input.charCodeAt(this.pos+2)||0!==this.lastTokEnd&&!Q.test(this.input.slice(this.lastTokEnd,this.pos))?this.finishOp(z.incDec,2):(this.skipLineComment(3),this.skipSpace(),this.nextToken()):61===e?this.finishOp(z.assign,2):this.finishOp(z.plusMin,1)},At.readToken_lt_gt=function(t){var e=this.input.charCodeAt(this.pos+1),i=1;return e===t?(i=62===t&&62===this.input.charCodeAt(this.pos+2)?3:2,61===this.input.charCodeAt(this.pos+i)?this.finishOp(z.assign,i+1):this.finishOp(z.bitShift,i)):33!==e||60!==t||this.inModule||45!==this.input.charCodeAt(this.pos+2)||45!==this.input.charCodeAt(this.pos+3)?(61===e&&(i=2),this.finishOp(z.relational,i)):(this.skipLineComment(4),this.skipSpace(),this.nextToken())},At.readToken_eq_excl=function(t){var e=this.input.charCodeAt(this.pos+1);return 61===e?this.finishOp(z.equality,61===this.input.charCodeAt(this.pos+2)?3:2):61===t&&62===e&&this.options.ecmaVersion>=6?(this.pos+=2,this.finishToken(z.arrow)):this.finishOp(61===t?z.eq:z.prefix,1)},At.getTokenFromCode=function(t){switch(t){case 46:return this.readToken_dot();case 40:return++this.pos,this.finishToken(z.parenL);case 41:return++this.pos,this.finishToken(z.parenR);case 59:return++this.pos,this.finishToken(z.semi);case 44:return++this.pos,this.finishToken(z.comma);case 91:return++this.pos,this.finishToken(z.bracketL);case 93:return++this.pos,this.finishToken(z.bracketR);case 123:return++this.pos,this.finishToken(z.braceL);case 125:return++this.pos,this.finishToken(z.braceR);case 58:return++this.pos,this.finishToken(z.colon);case 63:return++this.pos,this.finishToken(z.question);case 96:if(this.options.ecmaVersion<6)break;return++this.pos,this.finishToken(z.backQuote);case 48:var e=this.input.charCodeAt(this.pos+1);if(120===e||88===e)return this.readRadixNumber(16);if(this.options.ecmaVersion>=6){if(111===e||79===e)return this.readRadixNumber(8);if(98===e||66===e)return this.readRadixNumber(2)}case 49:case 50:case 51:case 52:case 53:case 54:case 55:case 56:case 57:return this.readNumber(!1);case 34:case 39:return this.readString(t);case 47:return this.readToken_slash();case 37:case 42:return this.readToken_mult_modulo_exp(t);case 124:case 38:return this.readToken_pipe_amp(t);case 94:return this.readToken_caret();case 43:case 45:return this.readToken_plus_min(t);case 60:case 62:return this.readToken_lt_gt(t);case 61:case 33:return this.readToken_eq_excl(t);case 126:return this.finishOp(z.prefix,1)}this.raise(this.pos,"Unexpected character '"+A(t)+"'")},At.finishOp=function(t,e){var i=this.input.slice(this.pos,this.pos+e);return this.pos+=e,this.finishToken(t,i)},At.readRegexp=function(){for(var t,e,i=this,s=this.pos;;){i.pos>=i.input.length&&i.raise(s,"Unterminated regular expression");var r=i.input.charAt(i.pos);if(Q.test(r)&&i.raise(s,"Unterminated regular expression"),t)t=!1;else{if("["===r)e=!0;else if("]"===r&&e)e=!1;else if("/"===r&&!e)break;t="\\"===r}++i.pos}var a=this.input.slice(s,this.pos);++this.pos;var n=this.pos,o=this.readWord1();this.containsEsc&&this.unexpected(n);var h=this.regexpState||(this.regexpState=new Et(this));h.reset(s,a,o),this.validateRegExpFlags(h),this.validateRegExpPattern(h);var p=null;try{p=new RegExp(a,o)}catch(t){}return this.finishToken(z.regexp,{pattern:a,flags:o,value:p})},At.readInt=function(t,e){for(var i=this,s=this.pos,r=0,a=0,n=null==e?1/0:e;a<n;++a){var o=i.input.charCodeAt(i.pos),h=void 0;if((h=o>=97?o-97+10:o>=65?o-65+10:o>=48&&o<=57?o-48:1/0)>=t)break;++i.pos,r=r*t+h}return this.pos===s||null!=e&&this.pos-s!==e?null:r},At.readRadixNumber=function(t){this.pos+=2;var e=this.readInt(t);return null==e&&this.raise(this.start+2,"Expected number in radix "+t),i(this.fullCharCodeAtPos())&&this.raise(this.pos,"Identifier directly after number"),this.finishToken(z.num,e)},At.readNumber=function(t){var e=this.pos;t||null!==this.readInt(10)||this.raise(e,"Invalid number");var s=this.pos-e>=2&&48===this.input.charCodeAt(e);s&&this.strict&&this.raise(e,"Invalid number"),s&&/[89]/.test(this.input.slice(e,this.pos))&&(s=!1);var r=this.input.charCodeAt(this.pos);46!==r||s||(++this.pos,this.readInt(10),r=this.input.charCodeAt(this.pos)),69!==r&&101!==r||s||(r=this.input.charCodeAt(++this.pos),43!==r&&45!==r||++this.pos,null===this.readInt(10)&&this.raise(e,"Invalid number")),i(this.fullCharCodeAtPos())&&this.raise(this.pos,"Identifier directly after number");var a=this.input.slice(e,this.pos),n=s?parseInt(a,8):parseFloat(a);return this.finishToken(z.num,n)},At.readCodePoint=function(){var t,e=this.input.charCodeAt(this.pos);if(123===e){this.options.ecmaVersion<6&&this.unexpected();var i=++this.pos;t=this.readHexChar(this.input.indexOf("}",this.pos)-this.pos),++this.pos,t>1114111&&this.invalidStringToken(i,"Code point out of bounds")}else t=this.readHexChar(4);return t},At.readString=function(t){for(var e=this,i="",s=++this.pos;;){e.pos>=e.input.length&&e.raise(e.start,"Unterminated string constant");var r=e.input.charCodeAt(e.pos);if(r===t)break;92===r?(i+=e.input.slice(s,e.pos),i+=e.readEscapedChar(!1),s=e.pos):(n(r,e.options.ecmaVersion>=10)&&e.raise(e.start,"Unterminated string constant"),++e.pos)}return i+=this.input.slice(s,this.pos++),this.finishToken(z.string,i)};var It={};At.tryReadTemplateToken=function(){this.inTemplateElement=!0;try{this.readTmplToken()}catch(t){if(t!==It)throw t;this.readInvalidTemplateToken()}this.inTemplateElement=!1},At.invalidStringToken=function(t,e){if(this.inTemplateElement&&this.options.ecmaVersion>=9)throw It;this.raise(t,e)},At.readTmplToken=function(){for(var t=this,e="",i=this.pos;;){t.pos>=t.input.length&&t.raise(t.start,"Unterminated template");var s=t.input.charCodeAt(t.pos);if(96===s||36===s&&123===t.input.charCodeAt(t.pos+1))return t.pos!==t.start||t.type!==z.template&&t.type!==z.invalidTemplate?(e+=t.input.slice(i,t.pos),t.finishToken(z.template,e)):36===s?(t.pos+=2,t.finishToken(z.dollarBraceL)):(++t.pos,t.finishToken(z.backQuote));if(92===s)e+=t.input.slice(i,t.pos),e+=t.readEscapedChar(!0),i=t.pos;else if(n(s)){switch(e+=t.input.slice(i,t.pos),++t.pos,s){case 13:10===t.input.charCodeAt(t.pos)&&++t.pos;case 10:e+="\n";break;default:e+=String.fromCharCode(s)}t.options.locations&&(++t.curLine,t.lineStart=t.pos),i=t.pos}else++t.pos}},At.readInvalidTemplateToken=function(){for(var t=this;this.pos<this.input.length;this.pos++)switch(t.input[t.pos]){case"\\":++t.pos;break;case"$":if("{"!==t.input[t.pos+1])break;case"`":return t.finishToken(z.invalidTemplate,t.input.slice(t.start,t.pos))}this.raise(this.start,"Unterminated template")},At.readEscapedChar=function(t){var e=this.input.charCodeAt(++this.pos);switch(++this.pos,e){case 110:return"\n";case 114:return"\r";case 120:return String.fromCharCode(this.readHexChar(2));case 117:return A(this.readCodePoint());case 116:return"\t";case 98:return"\b";case 118:return"\v";case 102:return"\f";case 13:10===this.input.charCodeAt(this.pos)&&++this.pos;case 10:return this.options.locations&&(this.lineStart=this.pos,++this.curLine),"";default:if(e>=48&&e<=55){var i=this.input.substr(this.pos-1,3).match(/^[0-7]+/)[0],s=parseInt(i,8);return s>255&&(i=i.slice(0,-1),s=parseInt(i,8)),this.pos+=i.length-1,e=this.input.charCodeAt(this.pos),"0"===i&&56!==e&&57!==e||!this.strict&&!t||this.invalidStringToken(this.pos-1-i.length,t?"Octal literal in template string":"Octal literal in strict mode"),String.fromCharCode(s)}return String.fromCharCode(e)}},At.readHexChar=function(t){var e=this.pos,i=this.readInt(16,t);return null===i&&this.invalidStringToken(e,"Bad character escape sequence"),i},At.readWord1=function(){var t=this;this.containsEsc=!1;for(var e="",r=!0,a=this.pos,n=this.options.ecmaVersion>=6;this.pos<this.input.length;){var o=t.fullCharCodeAtPos();if(s(o,n))t.pos+=o<=65535?1:2;else{if(92!==o)break;t.containsEsc=!0,e+=t.input.slice(a,t.pos);var h=t.pos;117!==t.input.charCodeAt(++t.pos)&&t.invalidStringToken(t.pos,"Expecting Unicode escape sequence \\uXXXX"),++t.pos;var p=t.readCodePoint();(r?i:s)(p,n)||t.invalidStringToken(h,"Invalid Unicode escape"),e+=A(p),a=t.pos}r=!1}return e+this.input.slice(a,this.pos)},At.readWord=function(){var t=this.readWord1(),e=z.name;return this.keywords.test(t)&&(this.containsEsc&&this.raiseRecoverable(this.start,"Escape sequence in keyword "+t),e=j[t]),this.finishToken(e,t)};t.version="5.7.2",t.parse=I,t.parseExpressionAt=P,t.tokenizer=L,t.addLooseExports=N,t.Parser=at,t.plugins=rt,t.defaultOptions=st,t.Position=et,t.SourceLocation=it,t.getLineInfo=h,t.Node=vt,t.TokenType=q,t.tokTypes=z,t.keywordTypes=j,t.TokContext=_t,t.tokContexts=bt,t.isIdentifierChar=s,t.isIdentifierStart=i,t.Token=wt,t.isNewLine=n,t.lineBreak=Q,t.lineBreakG=K,t.nonASCIIwhitespace=X,Object.defineProperty(t,"__esModule",{value:!0})});
 },{}],87:[function(require,module,exports){
 exports.read=function(a,o,t,r,h){var M,p,w=8*h-r-1,f=(1<<w)-1,e=f>>1,i=-7,N=t?h-1:0,n=t?-1:1,s=a[o+N];for(N+=n,M=s&(1<<-i)-1,s>>=-i,i+=w;i>0;M=256*M+a[o+N],N+=n,i-=8);for(p=M&(1<<-i)-1,M>>=-i,i+=r;i>0;p=256*p+a[o+N],N+=n,i-=8);if(0===M)M=1-e;else{if(M===f)return p?NaN:1/0*(s?-1:1);p+=Math.pow(2,r),M-=e}return(s?-1:1)*p*Math.pow(2,M-r)},exports.write=function(a,o,t,r,h,M){var p,w,f,e=8*M-h-1,i=(1<<e)-1,N=i>>1,n=23===h?Math.pow(2,-24)-Math.pow(2,-77):0,s=r?0:M-1,u=r?1:-1,l=o<0||0===o&&1/o<0?1:0;for(o=Math.abs(o),isNaN(o)||o===1/0?(w=isNaN(o)?1:0,p=i):(p=Math.floor(Math.log(o)/Math.LN2),o*(f=Math.pow(2,-p))<1&&(p--,f*=2),o+=p+N>=1?n/f:n*Math.pow(2,1-N),o*f>=2&&(p++,f/=2),p+N>=i?(w=0,p=i):p+N>=1?(w=(o*f-1)*Math.pow(2,h),p+=N):(w=o*Math.pow(2,N-1)*Math.pow(2,h),p=0));h>=8;a[t+s]=255&w,s+=u,w/=256,h-=8);for(p=p<<h|w,e+=h;e>0;a[t+s]=255&p,s+=u,p/=256,e-=8);a[t+s-u]|=128*l};
-
 },{}],88:[function(require,module,exports){
 "function"==typeof Object.create?module.exports=function(t,e){t.super_=e,t.prototype=Object.create(e.prototype,{constructor:{value:t,enumerable:!1,writable:!0,configurable:!0}})}:module.exports=function(t,e){t.super_=e;var o=function(){};o.prototype=e.prototype,t.prototype=new o,t.prototype.constructor=t};
 },{}],89:[function(require,module,exports){
 function isBuffer(f){return!!f.constructor&&"function"==typeof f.constructor.isBuffer&&f.constructor.isBuffer(f)}function isSlowBuffer(f){return"function"==typeof f.readFloatLE&&"function"==typeof f.slice&&isBuffer(f.slice(0,0))}module.exports=function(f){return null!=f&&(isBuffer(f)||isSlowBuffer(f)||!!f._isBuffer)};
+
 },{}],90:[function(require,module,exports){
 var toString={}.toString;module.exports=Array.isArray||function(r){return"[object Array]"==toString.call(r)};
 
@@ -398,13 +398,14 @@ module.exports=require("./lib/_stream_duplex.js");
 },{"./_stream_transform":97,"core-util-is":51,"inherits":88}],96:[function(require,module,exports){
 (function (process,global){
 "use strict";function _uint8ArrayToBuffer(e){return Buffer.from(e)}function _isUint8Array(e){return Buffer.isBuffer(e)||e instanceof OurUint8Array}function prependListener(e,t,r){if("function"==typeof e.prependListener)return e.prependListener(t,r);e._events&&e._events[t]?isArray(e._events[t])?e._events[t].unshift(r):e._events[t]=[r,e._events[t]]:e.on(t,r)}function ReadableState(e,t){Duplex=Duplex||require("./_stream_duplex"),e=e||{};var r=t instanceof Duplex;this.objectMode=!!e.objectMode,r&&(this.objectMode=this.objectMode||!!e.readableObjectMode);var n=e.highWaterMark,a=e.readableHighWaterMark,i=this.objectMode?16:16384;this.highWaterMark=n||0===n?n:r&&(a||0===a)?a:i,this.highWaterMark=Math.floor(this.highWaterMark),this.buffer=new BufferList,this.length=0,this.pipes=null,this.pipesCount=0,this.flowing=null,this.ended=!1,this.endEmitted=!1,this.reading=!1,this.sync=!0,this.needReadable=!1,this.emittedReadable=!1,this.readableListening=!1,this.resumeScheduled=!1,this.destroyed=!1,this.defaultEncoding=e.defaultEncoding||"utf8",this.awaitDrain=0,this.readingMore=!1,this.decoder=null,this.encoding=null,e.encoding&&(StringDecoder||(StringDecoder=require("string_decoder/").StringDecoder),this.decoder=new StringDecoder(e.encoding),this.encoding=e.encoding)}function Readable(e){if(Duplex=Duplex||require("./_stream_duplex"),!(this instanceof Readable))return new Readable(e);this._readableState=new ReadableState(e,this),this.readable=!0,e&&("function"==typeof e.read&&(this._read=e.read),"function"==typeof e.destroy&&(this._destroy=e.destroy)),Stream.call(this)}function readableAddChunk(e,t,r,n,a){var i=e._readableState;if(null===t)i.reading=!1,onEofChunk(e,i);else{var d;a||(d=chunkInvalid(i,t)),d?e.emit("error",d):i.objectMode||t&&t.length>0?("string"==typeof t||i.objectMode||Object.getPrototypeOf(t)===Buffer.prototype||(t=_uint8ArrayToBuffer(t)),n?i.endEmitted?e.emit("error",new Error("stream.unshift() after end event")):addChunk(e,i,t,!0):i.ended?e.emit("error",new Error("stream.push() after EOF")):(i.reading=!1,i.decoder&&!r?(t=i.decoder.write(t),i.objectMode||0!==t.length?addChunk(e,i,t,!1):maybeReadMore(e,i)):addChunk(e,i,t,!1))):n||(i.reading=!1)}return needMoreData(i)}function addChunk(e,t,r,n){t.flowing&&0===t.length&&!t.sync?(e.emit("data",r),e.read(0)):(t.length+=t.objectMode?1:r.length,n?t.buffer.unshift(r):t.buffer.push(r),t.needReadable&&emitReadable(e)),maybeReadMore(e,t)}function chunkInvalid(e,t){var r;return _isUint8Array(t)||"string"==typeof t||void 0===t||e.objectMode||(r=new TypeError("Invalid non-string/buffer chunk")),r}function needMoreData(e){return!e.ended&&(e.needReadable||e.length<e.highWaterMark||0===e.length)}function computeNewHighWaterMark(e){return e>=MAX_HWM?e=MAX_HWM:(e--,e|=e>>>1,e|=e>>>2,e|=e>>>4,e|=e>>>8,e|=e>>>16,e++),e}function howMuchToRead(e,t){return e<=0||0===t.length&&t.ended?0:t.objectMode?1:e!==e?t.flowing&&t.length?t.buffer.head.data.length:t.length:(e>t.highWaterMark&&(t.highWaterMark=computeNewHighWaterMark(e)),e<=t.length?e:t.ended?t.length:(t.needReadable=!0,0))}function onEofChunk(e,t){if(!t.ended){if(t.decoder){var r=t.decoder.end();r&&r.length&&(t.buffer.push(r),t.length+=t.objectMode?1:r.length)}t.ended=!0,emitReadable(e)}}function emitReadable(e){var t=e._readableState;t.needReadable=!1,t.emittedReadable||(debug("emitReadable",t.flowing),t.emittedReadable=!0,t.sync?pna.nextTick(emitReadable_,e):emitReadable_(e))}function emitReadable_(e){debug("emit readable"),e.emit("readable"),flow(e)}function maybeReadMore(e,t){t.readingMore||(t.readingMore=!0,pna.nextTick(maybeReadMore_,e,t))}function maybeReadMore_(e,t){for(var r=t.length;!t.reading&&!t.flowing&&!t.ended&&t.length<t.highWaterMark&&(debug("maybeReadMore read 0"),e.read(0),r!==t.length);)r=t.length;t.readingMore=!1}function pipeOnDrain(e){return function(){var t=e._readableState;debug("pipeOnDrain",t.awaitDrain),t.awaitDrain&&t.awaitDrain--,0===t.awaitDrain&&EElistenerCount(e,"data")&&(t.flowing=!0,flow(e))}}function nReadingNextTick(e){debug("readable nexttick read 0"),e.read(0)}function resume(e,t){t.resumeScheduled||(t.resumeScheduled=!0,pna.nextTick(resume_,e,t))}function resume_(e,t){t.reading||(debug("resume read 0"),e.read(0)),t.resumeScheduled=!1,t.awaitDrain=0,e.emit("resume"),flow(e),t.flowing&&!t.reading&&e.read(0)}function flow(e){var t=e._readableState;for(debug("flow",t.flowing);t.flowing&&null!==e.read(););}function fromList(e,t){if(0===t.length)return null;var r;return t.objectMode?r=t.buffer.shift():!e||e>=t.length?(r=t.decoder?t.buffer.join(""):1===t.buffer.length?t.buffer.head.data:t.buffer.concat(t.length),t.buffer.clear()):r=fromListPartial(e,t.buffer,t.decoder),r}function fromListPartial(e,t,r){var n;return e<t.head.data.length?(n=t.head.data.slice(0,e),t.head.data=t.head.data.slice(e)):n=e===t.head.data.length?t.shift():r?copyFromBufferString(e,t):copyFromBuffer(e,t),n}function copyFromBufferString(e,t){var r=t.head,n=1,a=r.data;for(e-=a.length;r=r.next;){var i=r.data,d=e>i.length?i.length:e;if(d===i.length?a+=i:a+=i.slice(0,e),0===(e-=d)){d===i.length?(++n,r.next?t.head=r.next:t.head=t.tail=null):(t.head=r,r.data=i.slice(d));break}++n}return t.length-=n,a}function copyFromBuffer(e,t){var r=Buffer.allocUnsafe(e),n=t.head,a=1;for(n.data.copy(r),e-=n.data.length;n=n.next;){var i=n.data,d=e>i.length?i.length:e;if(i.copy(r,r.length-e,0,d),0===(e-=d)){d===i.length?(++a,n.next?t.head=n.next:t.head=t.tail=null):(t.head=n,n.data=i.slice(d));break}++a}return t.length-=a,r}function endReadable(e){var t=e._readableState;if(t.length>0)throw new Error('"endReadable()" called on non-empty stream');t.endEmitted||(t.ended=!0,pna.nextTick(endReadableNT,t,e))}function endReadableNT(e,t){e.endEmitted||0!==e.length||(e.endEmitted=!0,t.readable=!1,t.emit("end"))}function indexOf(e,t){for(var r=0,n=e.length;r<n;r++)if(e[r]===t)return r;return-1}var pna=require("process-nextick-args");module.exports=Readable;var isArray=require("isarray"),Duplex;Readable.ReadableState=ReadableState;var EE=require("events").EventEmitter,EElistenerCount=function(e,t){return e.listeners(t).length},Stream=require("./internal/streams/stream"),Buffer=require("safe-buffer").Buffer,OurUint8Array=global.Uint8Array||function(){},util=require("core-util-is");util.inherits=require("inherits");var debugUtil=require("util"),debug=void 0;debug=debugUtil&&debugUtil.debuglog?debugUtil.debuglog("stream"):function(){};var BufferList=require("./internal/streams/BufferList"),destroyImpl=require("./internal/streams/destroy"),StringDecoder;util.inherits(Readable,Stream);var kProxyEvents=["error","close","destroy","pause","resume"];Object.defineProperty(Readable.prototype,"destroyed",{get:function(){return void 0!==this._readableState&&this._readableState.destroyed},set:function(e){this._readableState&&(this._readableState.destroyed=e)}}),Readable.prototype.destroy=destroyImpl.destroy,Readable.prototype._undestroy=destroyImpl.undestroy,Readable.prototype._destroy=function(e,t){this.push(null),t(e)},Readable.prototype.push=function(e,t){var r,n=this._readableState;return n.objectMode?r=!0:"string"==typeof e&&(t=t||n.defaultEncoding,t!==n.encoding&&(e=Buffer.from(e,t),t=""),r=!0),readableAddChunk(this,e,t,!1,r)},Readable.prototype.unshift=function(e){return readableAddChunk(this,e,null,!0,!1)},Readable.prototype.isPaused=function(){return!1===this._readableState.flowing},Readable.prototype.setEncoding=function(e){return StringDecoder||(StringDecoder=require("string_decoder/").StringDecoder),this._readableState.decoder=new StringDecoder(e),this._readableState.encoding=e,this};var MAX_HWM=8388608;Readable.prototype.read=function(e){debug("read",e),e=parseInt(e,10);var t=this._readableState,r=e;if(0!==e&&(t.emittedReadable=!1),0===e&&t.needReadable&&(t.length>=t.highWaterMark||t.ended))return debug("read: emitReadable",t.length,t.ended),0===t.length&&t.ended?endReadable(this):emitReadable(this),null;if(0===(e=howMuchToRead(e,t))&&t.ended)return 0===t.length&&endReadable(this),null;var n=t.needReadable;debug("need readable",n),(0===t.length||t.length-e<t.highWaterMark)&&(n=!0,debug("length less than watermark",n)),t.ended||t.reading?(n=!1,debug("reading or ended",n)):n&&(debug("do read"),t.reading=!0,t.sync=!0,0===t.length&&(t.needReadable=!0),this._read(t.highWaterMark),t.sync=!1,t.reading||(e=howMuchToRead(r,t)));var a;return a=e>0?fromList(e,t):null,null===a?(t.needReadable=!0,e=0):t.length-=e,0===t.length&&(t.ended||(t.needReadable=!0),r!==e&&t.ended&&endReadable(this)),null!==a&&this.emit("data",a),a},Readable.prototype._read=function(e){this.emit("error",new Error("_read() is not implemented"))},Readable.prototype.pipe=function(e,t){function r(e,t){debug("onunpipe"),e===s&&t&&!1===t.hasUnpiped&&(t.hasUnpiped=!0,a())}function n(){debug("onend"),e.end()}function a(){debug("cleanup"),e.removeListener("close",o),e.removeListener("finish",u),e.removeListener("drain",b),e.removeListener("error",d),e.removeListener("unpipe",r),s.removeListener("end",n),s.removeListener("end",l),s.removeListener("data",i),c=!0,!h.awaitDrain||e._writableState&&!e._writableState.needDrain||b()}function i(t){debug("ondata"),g=!1,!1!==e.write(t)||g||((1===h.pipesCount&&h.pipes===e||h.pipesCount>1&&-1!==indexOf(h.pipes,e))&&!c&&(debug("false write response, pause",s._readableState.awaitDrain),s._readableState.awaitDrain++,g=!0),s.pause())}function d(t){debug("onerror",t),l(),e.removeListener("error",d),0===EElistenerCount(e,"error")&&e.emit("error",t)}function o(){e.removeListener("finish",u),l()}function u(){debug("onfinish"),e.removeListener("close",o),l()}function l(){debug("unpipe"),s.unpipe(e)}var s=this,h=this._readableState;switch(h.pipesCount){case 0:h.pipes=e;break;case 1:h.pipes=[h.pipes,e];break;default:h.pipes.push(e)}h.pipesCount+=1,debug("pipe count=%d opts=%j",h.pipesCount,t);var f=(!t||!1!==t.end)&&e!==process.stdout&&e!==process.stderr,p=f?n:l;h.endEmitted?pna.nextTick(p):s.once("end",p),e.on("unpipe",r);var b=pipeOnDrain(s);e.on("drain",b);var c=!1,g=!1;return s.on("data",i),prependListener(e,"error",d),e.once("close",o),e.once("finish",u),e.emit("pipe",s),h.flowing||(debug("pipe resume"),s.resume()),e},Readable.prototype.unpipe=function(e){var t=this._readableState,r={hasUnpiped:!1};if(0===t.pipesCount)return this;if(1===t.pipesCount)return e&&e!==t.pipes?this:(e||(e=t.pipes),t.pipes=null,t.pipesCount=0,t.flowing=!1,e&&e.emit("unpipe",this,r),this);if(!e){var n=t.pipes,a=t.pipesCount;t.pipes=null,t.pipesCount=0,t.flowing=!1;for(var i=0;i<a;i++)n[i].emit("unpipe",this,r);return this}var d=indexOf(t.pipes,e);return-1===d?this:(t.pipes.splice(d,1),t.pipesCount-=1,1===t.pipesCount&&(t.pipes=t.pipes[0]),e.emit("unpipe",this,r),this)},Readable.prototype.on=function(e,t){var r=Stream.prototype.on.call(this,e,t);if("data"===e)!1!==this._readableState.flowing&&this.resume();else if("readable"===e){var n=this._readableState;n.endEmitted||n.readableListening||(n.readableListening=n.needReadable=!0,n.emittedReadable=!1,n.reading?n.length&&emitReadable(this):pna.nextTick(nReadingNextTick,this))}return r},Readable.prototype.addListener=Readable.prototype.on,Readable.prototype.resume=function(){var e=this._readableState;return e.flowing||(debug("resume"),e.flowing=!0,resume(this,e)),this},Readable.prototype.pause=function(){return debug("call pause flowing=%j",this._readableState.flowing),!1!==this._readableState.flowing&&(debug("pause"),this._readableState.flowing=!1,this.emit("pause")),this},Readable.prototype.wrap=function(e){var t=this,r=this._readableState,n=!1;e.on("end",function(){if(debug("wrapped end"),r.decoder&&!r.ended){var e=r.decoder.end();e&&e.length&&t.push(e)}t.push(null)}),e.on("data",function(a){if(debug("wrapped data"),r.decoder&&(a=r.decoder.write(a)),(!r.objectMode||null!==a&&void 0!==a)&&(r.objectMode||a&&a.length)){t.push(a)||(n=!0,e.pause())}});for(var a in e)void 0===this[a]&&"function"==typeof e[a]&&(this[a]=function(t){return function(){return e[t].apply(e,arguments)}}(a));for(var i=0;i<kProxyEvents.length;i++)e.on(kProxyEvents[i],this.emit.bind(this,kProxyEvents[i]));return this._read=function(t){debug("wrapped _read",t),n&&(n=!1,e.resume())},this},Object.defineProperty(Readable.prototype,"readableHighWaterMark",{enumerable:!1,get:function(){return this._readableState.highWaterMark}}),Readable._fromList=fromList;
-
 }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{"./_stream_duplex":94,"./internal/streams/BufferList":99,"./internal/streams/destroy":100,"./internal/streams/stream":101,"_process":92,"core-util-is":51,"events":52,"inherits":88,"isarray":90,"process-nextick-args":91,"safe-buffer":107,"string_decoder/":102,"util":49}],97:[function(require,module,exports){
 "use strict";function afterTransform(r,t){var n=this._transformState;n.transforming=!1;var e=n.writecb;if(!e)return this.emit("error",new Error("write callback called multiple times"));n.writechunk=null,n.writecb=null,null!=t&&this.push(t),e(r);var i=this._readableState;i.reading=!1,(i.needReadable||i.length<i.highWaterMark)&&this._read(i.highWaterMark)}function Transform(r){if(!(this instanceof Transform))return new Transform(r);Duplex.call(this,r),this._transformState={afterTransform:afterTransform.bind(this),needTransform:!1,transforming:!1,writecb:null,writechunk:null,writeencoding:null},this._readableState.needReadable=!0,this._readableState.sync=!1,r&&("function"==typeof r.transform&&(this._transform=r.transform),"function"==typeof r.flush&&(this._flush=r.flush)),this.on("prefinish",prefinish)}function prefinish(){var r=this;"function"==typeof this._flush?this._flush(function(t,n){done(r,t,n)}):done(this,null,null)}function done(r,t,n){if(t)return r.emit("error",t);if(null!=n&&r.push(n),r._writableState.length)throw new Error("Calling transform done when ws.length != 0");if(r._transformState.transforming)throw new Error("Calling transform done when still transforming");return r.push(null)}module.exports=Transform;var Duplex=require("./_stream_duplex"),util=require("core-util-is");util.inherits=require("inherits"),util.inherits(Transform,Duplex),Transform.prototype.push=function(r,t){return this._transformState.needTransform=!1,Duplex.prototype.push.call(this,r,t)},Transform.prototype._transform=function(r,t,n){throw new Error("_transform() is not implemented")},Transform.prototype._write=function(r,t,n){var e=this._transformState;if(e.writecb=n,e.writechunk=r,e.writeencoding=t,!e.transforming){var i=this._readableState;(e.needTransform||i.needReadable||i.length<i.highWaterMark)&&this._read(i.highWaterMark)}},Transform.prototype._read=function(r){var t=this._transformState;null!==t.writechunk&&t.writecb&&!t.transforming?(t.transforming=!0,this._transform(t.writechunk,t.writeencoding,t.afterTransform)):t.needTransform=!0},Transform.prototype._destroy=function(r,t){var n=this;Duplex.prototype._destroy.call(this,r,function(r){t(r),n.emit("close")})};
+
 },{"./_stream_duplex":94,"core-util-is":51,"inherits":88}],98:[function(require,module,exports){
 (function (process,global,setImmediate){
 "use strict";function WriteReq(e,t,r){this.chunk=e,this.encoding=t,this.callback=r,this.next=null}function CorkedRequest(e){var t=this;this.next=null,this.entry=null,this.finish=function(){onCorkedFinish(t,e)}}function _uint8ArrayToBuffer(e){return Buffer.from(e)}function _isUint8Array(e){return Buffer.isBuffer(e)||e instanceof OurUint8Array}function nop(){}function WritableState(e,t){Duplex=Duplex||require("./_stream_duplex"),e=e||{};var r=t instanceof Duplex;this.objectMode=!!e.objectMode,r&&(this.objectMode=this.objectMode||!!e.writableObjectMode);var i=e.highWaterMark,n=e.writableHighWaterMark,o=this.objectMode?16:16384;this.highWaterMark=i||0===i?i:r&&(n||0===n)?n:o,this.highWaterMark=Math.floor(this.highWaterMark),this.finalCalled=!1,this.needDrain=!1,this.ending=!1,this.ended=!1,this.finished=!1,this.destroyed=!1;var a=!1===e.decodeStrings;this.decodeStrings=!a,this.defaultEncoding=e.defaultEncoding||"utf8",this.length=0,this.writing=!1,this.corked=0,this.sync=!0,this.bufferProcessing=!1,this.onwrite=function(e){onwrite(t,e)},this.writecb=null,this.writelen=0,this.bufferedRequest=null,this.lastBufferedRequest=null,this.pendingcb=0,this.prefinished=!1,this.errorEmitted=!1,this.bufferedRequestCount=0,this.corkedRequestsFree=new CorkedRequest(this)}function Writable(e){if(Duplex=Duplex||require("./_stream_duplex"),!(realHasInstance.call(Writable,this)||this instanceof Duplex))return new Writable(e);this._writableState=new WritableState(e,this),this.writable=!0,e&&("function"==typeof e.write&&(this._write=e.write),"function"==typeof e.writev&&(this._writev=e.writev),"function"==typeof e.destroy&&(this._destroy=e.destroy),"function"==typeof e.final&&(this._final=e.final)),Stream.call(this)}function writeAfterEnd(e,t){var r=new Error("write after end");e.emit("error",r),pna.nextTick(t,r)}function validChunk(e,t,r,i){var n=!0,o=!1;return null===r?o=new TypeError("May not write null values to stream"):"string"==typeof r||void 0===r||t.objectMode||(o=new TypeError("Invalid non-string/buffer chunk")),o&&(e.emit("error",o),pna.nextTick(i,o),n=!1),n}function decodeChunk(e,t,r){return e.objectMode||!1===e.decodeStrings||"string"!=typeof t||(t=Buffer.from(t,r)),t}function writeOrBuffer(e,t,r,i,n,o){if(!r){var a=decodeChunk(t,i,n);i!==a&&(r=!0,n="buffer",i=a)}var s=t.objectMode?1:i.length;t.length+=s;var f=t.length<t.highWaterMark;if(f||(t.needDrain=!0),t.writing||t.corked){var u=t.lastBufferedRequest;t.lastBufferedRequest={chunk:i,encoding:n,isBuf:r,callback:o,next:null},u?u.next=t.lastBufferedRequest:t.bufferedRequest=t.lastBufferedRequest,t.bufferedRequestCount+=1}else doWrite(e,t,!1,s,i,n,o);return f}function doWrite(e,t,r,i,n,o,a){t.writelen=i,t.writecb=a,t.writing=!0,t.sync=!0,r?e._writev(n,t.onwrite):e._write(n,o,t.onwrite),t.sync=!1}function onwriteError(e,t,r,i,n){--t.pendingcb,r?(pna.nextTick(n,i),pna.nextTick(finishMaybe,e,t),e._writableState.errorEmitted=!0,e.emit("error",i)):(n(i),e._writableState.errorEmitted=!0,e.emit("error",i),finishMaybe(e,t))}function onwriteStateUpdate(e){e.writing=!1,e.writecb=null,e.length-=e.writelen,e.writelen=0}function onwrite(e,t){var r=e._writableState,i=r.sync,n=r.writecb;if(onwriteStateUpdate(r),t)onwriteError(e,r,i,t,n);else{var o=needFinish(r);o||r.corked||r.bufferProcessing||!r.bufferedRequest||clearBuffer(e,r),i?asyncWrite(afterWrite,e,r,o,n):afterWrite(e,r,o,n)}}function afterWrite(e,t,r,i){r||onwriteDrain(e,t),t.pendingcb--,i(),finishMaybe(e,t)}function onwriteDrain(e,t){0===t.length&&t.needDrain&&(t.needDrain=!1,e.emit("drain"))}function clearBuffer(e,t){t.bufferProcessing=!0;var r=t.bufferedRequest;if(e._writev&&r&&r.next){var i=t.bufferedRequestCount,n=new Array(i),o=t.corkedRequestsFree;o.entry=r;for(var a=0,s=!0;r;)n[a]=r,r.isBuf||(s=!1),r=r.next,a+=1;n.allBuffers=s,doWrite(e,t,!0,t.length,n,"",o.finish),t.pendingcb++,t.lastBufferedRequest=null,o.next?(t.corkedRequestsFree=o.next,o.next=null):t.corkedRequestsFree=new CorkedRequest(t),t.bufferedRequestCount=0}else{for(;r;){var f=r.chunk,u=r.encoding,l=r.callback;if(doWrite(e,t,!1,t.objectMode?1:f.length,f,u,l),r=r.next,t.bufferedRequestCount--,t.writing)break}null===r&&(t.lastBufferedRequest=null)}t.bufferedRequest=r,t.bufferProcessing=!1}function needFinish(e){return e.ending&&0===e.length&&null===e.bufferedRequest&&!e.finished&&!e.writing}function callFinal(e,t){e._final(function(r){t.pendingcb--,r&&e.emit("error",r),t.prefinished=!0,e.emit("prefinish"),finishMaybe(e,t)})}function prefinish(e,t){t.prefinished||t.finalCalled||("function"==typeof e._final?(t.pendingcb++,t.finalCalled=!0,pna.nextTick(callFinal,e,t)):(t.prefinished=!0,e.emit("prefinish")))}function finishMaybe(e,t){var r=needFinish(t);return r&&(prefinish(e,t),0===t.pendingcb&&(t.finished=!0,e.emit("finish"))),r}function endWritable(e,t,r){t.ending=!0,finishMaybe(e,t),r&&(t.finished?pna.nextTick(r):e.once("finish",r)),t.ended=!0,e.writable=!1}function onCorkedFinish(e,t,r){var i=e.entry;for(e.entry=null;i;){var n=i.callback;t.pendingcb--,n(r),i=i.next}t.corkedRequestsFree?t.corkedRequestsFree.next=e:t.corkedRequestsFree=e}var pna=require("process-nextick-args");module.exports=Writable;var asyncWrite=!process.browser&&["v0.10","v0.9."].indexOf(process.version.slice(0,5))>-1?setImmediate:pna.nextTick,Duplex;Writable.WritableState=WritableState;var util=require("core-util-is");util.inherits=require("inherits");var internalUtil={deprecate:require("util-deprecate")},Stream=require("./internal/streams/stream"),Buffer=require("safe-buffer").Buffer,OurUint8Array=global.Uint8Array||function(){},destroyImpl=require("./internal/streams/destroy");util.inherits(Writable,Stream),WritableState.prototype.getBuffer=function(){for(var e=this.bufferedRequest,t=[];e;)t.push(e),e=e.next;return t},function(){try{Object.defineProperty(WritableState.prototype,"buffer",{get:internalUtil.deprecate(function(){return this.getBuffer()},"_writableState.buffer is deprecated. Use _writableState.getBuffer instead.","DEP0003")})}catch(e){}}();var realHasInstance;"function"==typeof Symbol&&Symbol.hasInstance&&"function"==typeof Function.prototype[Symbol.hasInstance]?(realHasInstance=Function.prototype[Symbol.hasInstance],Object.defineProperty(Writable,Symbol.hasInstance,{value:function(e){return!!realHasInstance.call(this,e)||this===Writable&&(e&&e._writableState instanceof WritableState)}})):realHasInstance=function(e){return e instanceof this},Writable.prototype.pipe=function(){this.emit("error",new Error("Cannot pipe, not readable"))},Writable.prototype.write=function(e,t,r){var i=this._writableState,n=!1,o=!i.objectMode&&_isUint8Array(e);return o&&!Buffer.isBuffer(e)&&(e=_uint8ArrayToBuffer(e)),"function"==typeof t&&(r=t,t=null),o?t="buffer":t||(t=i.defaultEncoding),"function"!=typeof r&&(r=nop),i.ended?writeAfterEnd(this,r):(o||validChunk(this,i,e,r))&&(i.pendingcb++,n=writeOrBuffer(this,i,o,e,t,r)),n},Writable.prototype.cork=function(){this._writableState.corked++},Writable.prototype.uncork=function(){var e=this._writableState;e.corked&&(e.corked--,e.writing||e.corked||e.finished||e.bufferProcessing||!e.bufferedRequest||clearBuffer(this,e))},Writable.prototype.setDefaultEncoding=function(e){if("string"==typeof e&&(e=e.toLowerCase()),!(["hex","utf8","utf-8","ascii","binary","base64","ucs2","ucs-2","utf16le","utf-16le","raw"].indexOf((e+"").toLowerCase())>-1))throw new TypeError("Unknown encoding: "+e);return this._writableState.defaultEncoding=e,this},Object.defineProperty(Writable.prototype,"writableHighWaterMark",{enumerable:!1,get:function(){return this._writableState.highWaterMark}}),Writable.prototype._write=function(e,t,r){r(new Error("_write() is not implemented"))},Writable.prototype._writev=null,Writable.prototype.end=function(e,t,r){var i=this._writableState;"function"==typeof e?(r=e,e=null,t=null):"function"==typeof t&&(r=t,t=null),null!==e&&void 0!==e&&this.write(e,t),i.corked&&(i.corked=1,this.uncork()),i.ending||i.finished||endWritable(this,i,r)},Object.defineProperty(Writable.prototype,"destroyed",{get:function(){return void 0!==this._writableState&&this._writableState.destroyed},set:function(e){this._writableState&&(this._writableState.destroyed=e)}}),Writable.prototype.destroy=destroyImpl.destroy,Writable.prototype._undestroy=destroyImpl.undestroy,Writable.prototype._destroy=function(e,t){this.end(),t(e)};
+
 }).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {},require("timers").setImmediate)
 },{"./_stream_duplex":94,"./internal/streams/destroy":100,"./internal/streams/stream":101,"_process":92,"core-util-is":51,"inherits":88,"process-nextick-args":91,"safe-buffer":107,"timers":112,"util-deprecate":113}],99:[function(require,module,exports){
 "use strict";function _classCallCheck(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}function copyBuffer(t,e,i){t.copy(e,i)}var Buffer=require("safe-buffer").Buffer,util=require("util");module.exports=function(){function t(){_classCallCheck(this,t),this.head=null,this.tail=null,this.length=0}return t.prototype.push=function(t){var e={data:t,next:null};this.length>0?this.tail.next=e:this.head=e,this.tail=e,++this.length},t.prototype.unshift=function(t){var e={data:t,next:this.head};0===this.length&&(this.tail=e),this.head=e,++this.length},t.prototype.shift=function(){if(0!==this.length){var t=this.head.data;return 1===this.length?this.head=this.tail=null:this.head=this.head.next,--this.length,t}},t.prototype.clear=function(){this.head=this.tail=null,this.length=0},t.prototype.join=function(t){if(0===this.length)return"";for(var e=this.head,i=""+e.data;e=e.next;)i+=t+e.data;return i},t.prototype.concat=function(t){if(0===this.length)return Buffer.alloc(0);if(1===this.length)return this.head.data;for(var e=Buffer.allocUnsafe(t>>>0),i=this.head,n=0;i;)copyBuffer(i.data,e,n),n+=i.data.length,i=i.next;return e},t}(),util&&util.inspect&&util.inspect.custom&&(module.exports.prototype[util.inspect.custom]=function(){var t=util.inspect({length:this.length});return this.constructor.name+" "+t});
@@ -414,7 +415,6 @@ module.exports=require("./lib/_stream_duplex.js");
 
 },{"process-nextick-args":91}],101:[function(require,module,exports){
 module.exports=require("events").EventEmitter;
-
 },{"events":52}],102:[function(require,module,exports){
 "use strict";function _normalizeEncoding(t){if(!t)return"utf8";for(var e;;)switch(t){case"utf8":case"utf-8":return"utf8";case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return"utf16le";case"latin1":case"binary":return"latin1";case"base64":case"ascii":case"hex":return t;default:if(e)return;t=(""+t).toLowerCase(),e=!0}}function normalizeEncoding(t){var e=_normalizeEncoding(t);if("string"!=typeof e&&(Buffer.isEncoding===isEncoding||!isEncoding(t)))throw new Error("Unknown encoding: "+t);return e||t}function StringDecoder(t){this.encoding=normalizeEncoding(t);var e;switch(this.encoding){case"utf16le":this.text=utf16Text,this.end=utf16End,e=4;break;case"utf8":this.fillLast=utf8FillLast,e=4;break;case"base64":this.text=base64Text,this.end=base64End,e=3;break;default:return this.write=simpleWrite,void(this.end=simpleEnd)}this.lastNeed=0,this.lastTotal=0,this.lastChar=Buffer.allocUnsafe(e)}function utf8CheckByte(t){return t<=127?0:t>>5==6?2:t>>4==14?3:t>>3==30?4:t>>6==2?-1:-2}function utf8CheckIncomplete(t,e,s){var i=e.length-1;if(i<s)return 0;var n=utf8CheckByte(e[i]);return n>=0?(n>0&&(t.lastNeed=n-1),n):--i<s||-2===n?0:(n=utf8CheckByte(e[i]))>=0?(n>0&&(t.lastNeed=n-2),n):--i<s||-2===n?0:(n=utf8CheckByte(e[i]),n>=0?(n>0&&(2===n?n=0:t.lastNeed=n-3),n):0)}function utf8CheckExtraBytes(t,e,s){if(128!=(192&e[0]))return t.lastNeed=0,"�";if(t.lastNeed>1&&e.length>1){if(128!=(192&e[1]))return t.lastNeed=1,"�";if(t.lastNeed>2&&e.length>2&&128!=(192&e[2]))return t.lastNeed=2,"�"}}function utf8FillLast(t){var e=this.lastTotal-this.lastNeed,s=utf8CheckExtraBytes(this,t,e);return void 0!==s?s:this.lastNeed<=t.length?(t.copy(this.lastChar,e,0,this.lastNeed),this.lastChar.toString(this.encoding,0,this.lastTotal)):(t.copy(this.lastChar,e,0,t.length),void(this.lastNeed-=t.length))}function utf8Text(t,e){var s=utf8CheckIncomplete(this,t,e);if(!this.lastNeed)return t.toString("utf8",e);this.lastTotal=s;var i=t.length-(s-this.lastNeed);return t.copy(this.lastChar,0,i),t.toString("utf8",e,i)}function utf8End(t){var e=t&&t.length?this.write(t):"";return this.lastNeed?e+"�":e}function utf16Text(t,e){if((t.length-e)%2==0){var s=t.toString("utf16le",e);if(s){var i=s.charCodeAt(s.length-1);if(i>=55296&&i<=56319)return this.lastNeed=2,this.lastTotal=4,this.lastChar[0]=t[t.length-2],this.lastChar[1]=t[t.length-1],s.slice(0,-1)}return s}return this.lastNeed=1,this.lastTotal=2,this.lastChar[0]=t[t.length-1],t.toString("utf16le",e,t.length-1)}function utf16End(t){var e=t&&t.length?this.write(t):"";if(this.lastNeed){var s=this.lastTotal-this.lastNeed;return e+this.lastChar.toString("utf16le",0,s)}return e}function base64Text(t,e){var s=(t.length-e)%3;return 0===s?t.toString("base64",e):(this.lastNeed=3-s,this.lastTotal=3,1===s?this.lastChar[0]=t[t.length-1]:(this.lastChar[0]=t[t.length-2],this.lastChar[1]=t[t.length-1]),t.toString("base64",e,t.length-s))}function base64End(t){var e=t&&t.length?this.write(t):"";return this.lastNeed?e+this.lastChar.toString("base64",0,3-this.lastNeed):e}function simpleWrite(t){return t.toString(this.encoding)}function simpleEnd(t){return t&&t.length?this.write(t):""}var Buffer=require("safe-buffer").Buffer,isEncoding=Buffer.isEncoding||function(t){switch((t=""+t)&&t.toLowerCase()){case"hex":case"utf8":case"utf-8":case"ascii":case"binary":case"base64":case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":case"raw":return!0;default:return!1}};exports.StringDecoder=StringDecoder,StringDecoder.prototype.write=function(t){if(0===t.length)return"";var e,s;if(this.lastNeed){if(void 0===(e=this.fillLast(t)))return"";s=this.lastNeed,this.lastNeed=0}else s=0;return s<t.length?e?e+this.text(t,s):this.text(t,s):e||""},StringDecoder.prototype.end=utf8End,StringDecoder.prototype.text=utf8Text,StringDecoder.prototype.fillLast=function(t){if(this.lastNeed<=t.length)return t.copy(this.lastChar,this.lastTotal-this.lastNeed,0,this.lastNeed),this.lastChar.toString(this.encoding,0,this.lastTotal);t.copy(this.lastChar,this.lastTotal-this.lastNeed,0,t.length),this.lastNeed-=t.length};
 
@@ -432,7 +432,6 @@ module.exports=require("./lib/_stream_writable.js");
 
 },{"./lib/_stream_writable.js":98}],107:[function(require,module,exports){
 function copyProps(f,r){for(var e in f)r[e]=f[e]}function SafeBuffer(f,r,e){return Buffer(f,r,e)}var buffer=require("buffer"),Buffer=buffer.Buffer;Buffer.from&&Buffer.alloc&&Buffer.allocUnsafe&&Buffer.allocUnsafeSlow?module.exports=buffer:(copyProps(buffer,exports),exports.Buffer=SafeBuffer),copyProps(Buffer,SafeBuffer),SafeBuffer.from=function(f,r,e){if("number"==typeof f)throw new TypeError("Argument must not be a number");return Buffer(f,r,e)},SafeBuffer.alloc=function(f,r,e){if("number"!=typeof f)throw new TypeError("Argument must be a number");var u=Buffer(f);return void 0!==r?"string"==typeof e?u.fill(r,e):u.fill(r):u.fill(0),u},SafeBuffer.allocUnsafe=function(f){if("number"!=typeof f)throw new TypeError("Argument must be a number");return Buffer(f)},SafeBuffer.allocUnsafeSlow=function(f){if("number"!=typeof f)throw new TypeError("Argument must be a number");return buffer.SlowBuffer(f)};
-
 },{"buffer":50}],108:[function(require,module,exports){
 function Stream(){EE.call(this)}module.exports=Stream;var EE=require("events").EventEmitter,inherits=require("inherits");inherits(Stream,EE),Stream.Readable=require("readable-stream/readable.js"),Stream.Writable=require("readable-stream/writable.js"),Stream.Duplex=require("readable-stream/duplex.js"),Stream.Transform=require("readable-stream/transform.js"),Stream.PassThrough=require("readable-stream/passthrough.js"),Stream.Stream=Stream,Stream.prototype.pipe=function(e,r){function t(r){e.writable&&!1===e.write(r)&&m.pause&&m.pause()}function n(){m.readable&&m.resume&&m.resume()}function a(){u||(u=!0,e.end())}function o(){u||(u=!0,"function"==typeof e.destroy&&e.destroy())}function i(e){if(s(),0===EE.listenerCount(this,"error"))throw e}function s(){m.removeListener("data",t),e.removeListener("drain",n),m.removeListener("end",a),m.removeListener("close",o),m.removeListener("error",i),e.removeListener("error",i),m.removeListener("end",s),m.removeListener("close",s),e.removeListener("close",s)}var m=this;m.on("data",t),e.on("drain",n),e._isStdio||r&&!1===r.end||(m.on("end",a),m.on("close",o));var u=!1;return m.on("error",i),e.on("error",i),m.on("end",s),m.on("close",s),e.on("close",s),e.emit("pipe",m),e};
 },{"events":52,"inherits":88,"readable-stream/duplex.js":93,"readable-stream/passthrough.js":103,"readable-stream/readable.js":104,"readable-stream/transform.js":105,"readable-stream/writable.js":106}],109:[function(require,module,exports){
@@ -440,17 +439,18 @@ function Stream(){EE.call(this)}module.exports=Stream;var EE=require("events").E
 
 },{"./":110}],110:[function(require,module,exports){
 "use strict";function _interopRequireDefault(e){return e&&e.__esModule?e:{default:e}}Object.defineProperty(exports,"__esModule",{value:!0}),exports.Block=void 0;var _thaw=require("./thaw"),_thaw2=_interopRequireDefault(_thaw),_block=require("./block"),_block2=_interopRequireDefault(_block);exports.default=_thaw2.default,exports.Block=_block2.default,"undefined"!=typeof window&&(window.Thaw=_thaw2.default,window.Thaw.Block=_block2.default);
-
 },{"./block":109,"./thaw":111}],111:[function(require,module,exports){
 "use strict";function _classCallCheck(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}function thaw(t){var e=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};return new Thaw(t,e)}Object.defineProperty(exports,"__esModule",{value:!0});var _extends=Object.assign||function(t){for(var e=1;e<arguments.length;e++){var i=arguments[e];for(var n in i)Object.prototype.hasOwnProperty.call(i,n)&&(t[n]=i[n])}return t},_createClass=function(){function t(t,e){for(var i=0;i<e.length;i++){var n=e[i];n.enumerable=n.enumerable||!1,n.configurable=!0,"value"in n&&(n.writable=!0),Object.defineProperty(t,n.key,n)}}return function(e,i,n){return i&&t(e.prototype,i),n&&t(e,n),e}}();exports.thaw=thaw;var thawing=!1,thaws=[],Thaw=function(){function t(e){var i=this,n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{};_classCallCheck(this,t);var s=_extends({},this.constructor.defaultSettings,n),a=s.each,r=s.done;this.items=e,this.i=0,this.options=n;var h=this.tick=function(){if(!(i.i<0||(i.timeout=setTimeout(h,0),thawing))){var t=e[i.i];if(i.i>=e.length)return null!==r&&(thawing=!0,r(t,i.i),thawing=!1),i.i=-1,void clearTimeout(i.timeout);null!==a?(thawing=!0,a(t,i.i),thawing=!1):void 0!==t&&t(),i.i++}};thaws.push(this),n.delay||h()}return _createClass(t,null,[{key:"stopAll",value:function(){for(var t=0;t<thaws.length;t++)thaws[t].stop()}},{key:"defaultSettings",get:function(){return{each:null,done:null}}},{key:"isThawing",get:function(){return thawing}}]),_createClass(t,[{key:"makeReady",value:function(){return this.i<0&&(this.i=this.items.length,!0)}},{key:"add",value:function(t){var e=this.makeReady();return this.items.push(t),e&&this.tick(),this}},{key:"insert",value:function(t){var e=this.makeReady();return this.items.splice(this.i,0,t),e&&this.tick(),this}},{key:"addArray",value:function(t){var e=this.makeReady();return this.items=this.items.concat(t),e&&this.tick(),this}},{key:"insertArray",value:function(t){var e=this.makeReady(),i=this.items,n=t,s=this.items.splice(this.i,this.items.length-this.i+1);return this.items=i.concat(n,s),e&&this.tick(),this}},{key:"stop",value:function(){return this.i=-1,clearTimeout(this.timeout),this.options.done&&this.options.done(),this}}]),t}();exports.default=Thaw;
 
 },{}],112:[function(require,module,exports){
 (function (setImmediate,clearImmediate){
 function Timeout(e,t){this._id=e,this._clearFn=t}var nextTick=require("process/browser.js").nextTick,apply=Function.prototype.apply,slice=Array.prototype.slice,immediateIds={},nextImmediateId=0;exports.setTimeout=function(){return new Timeout(apply.call(setTimeout,window,arguments),clearTimeout)},exports.setInterval=function(){return new Timeout(apply.call(setInterval,window,arguments),clearInterval)},exports.clearTimeout=exports.clearInterval=function(e){e.close()},Timeout.prototype.unref=Timeout.prototype.ref=function(){},Timeout.prototype.close=function(){this._clearFn.call(window,this._id)},exports.enroll=function(e,t){clearTimeout(e._idleTimeoutId),e._idleTimeout=t},exports.unenroll=function(e){clearTimeout(e._idleTimeoutId),e._idleTimeout=-1},exports._unrefActive=exports.active=function(e){clearTimeout(e._idleTimeoutId);var t=e._idleTimeout;t>=0&&(e._idleTimeoutId=setTimeout(function(){e._onTimeout&&e._onTimeout()},t))},exports.setImmediate="function"==typeof setImmediate?setImmediate:function(e){var t=nextImmediateId++,i=!(arguments.length<2)&&slice.call(arguments,1);return immediateIds[t]=!0,nextTick(function(){immediateIds[t]&&(i?e.apply(null,i):e.call(null),exports.clearImmediate(t))}),t},exports.clearImmediate="function"==typeof clearImmediate?clearImmediate:function(e){delete immediateIds[e]};
+
 }).call(this,require("timers").setImmediate,require("timers").clearImmediate)
 },{"process/browser.js":92,"timers":112}],113:[function(require,module,exports){
 (function (global){
 function deprecate(r,e){function o(){if(!t){if(config("throwDeprecation"))throw new Error(e);config("traceDeprecation")?console.trace(e):console.warn(e),t=!0}return r.apply(this,arguments)}if(config("noDeprecation"))return r;var t=!1;return o}function config(r){try{if(!global.localStorage)return!1}catch(r){return!1}var e=global.localStorage[r];return null!=e&&"true"===String(e).toLowerCase()}module.exports=deprecate;
+
 }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
 },{}]},{},[47])(47)
 });
diff --git a/package.json b/package.json
index 0f18c57e4..f614123ff 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "brain.js",
   "description": "Neural network library",
-  "version": "1.4.6",
+  "version": "1.4.7",
   "author": "Heather Arthur <fayearthur@gmail.com>",
   "repository": {
     "type": "git",
@@ -11,7 +11,8 @@
     "dist",
     "browser.js",
     "browser.min.js",
-    "index.d.ts"
+    "index.d.ts",
+    "index.js"
   ],
   "scripts": {
     "test-browser": "testee test/browser/index.html --browsers firefox --reporter Spec",