;\n\nfunction isSlottable(child: React.ReactNode): child is React.ReactElement {\n return React.isValidElement(child) && child.type === Slottable;\n}\n\nfunction mergeProps(slotProps: AnyProps, childProps: AnyProps) {\n // all child props should override\n const overrideProps = { ...childProps };\n\n for (const propName in childProps) {\n const slotPropValue = slotProps[propName];\n const childPropValue = childProps[propName];\n\n const isHandler = /^on[A-Z]/.test(propName);\n if (isHandler) {\n // if the handler exists on both, we compose them\n if (slotPropValue && childPropValue) {\n overrideProps[propName] = (...args: unknown[]) => {\n childPropValue(...args);\n slotPropValue(...args);\n };\n }\n // but if it exists only on the slot, we use only this one\n else if (slotPropValue) {\n overrideProps[propName] = slotPropValue;\n }\n }\n // if it's `style`, we merge them\n else if (propName === 'style') {\n overrideProps[propName] = { ...slotPropValue, ...childPropValue };\n } else if (propName === 'className') {\n overrideProps[propName] = [slotPropValue, childPropValue].filter(Boolean).join(' ');\n }\n }\n\n return { ...slotProps, ...overrideProps };\n}\n\nconst Root = Slot;\n\nexport {\n Slot,\n Slottable,\n //\n Root,\n};\nexport type { SlotProps };\n",null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,"import * as React from 'react';\nimport * as ReactDOM from 'react-dom';\nimport { Slot } from '@radix-ui/react-slot';\n\nconst NODES = [\n 'a',\n 'button',\n 'div',\n 'form',\n 'h2',\n 'h3',\n 'img',\n 'input',\n 'label',\n 'li',\n 'nav',\n 'ol',\n 'p',\n 'span',\n 'svg',\n 'ul',\n] as const;\n\n// Temporary while we await merge of this fix:\n// https://github.com/DefinitelyTyped/DefinitelyTyped/pull/55396\n// prettier-ignore\ntype PropsWithoutRef = P extends any ? ('ref' extends keyof P ? Pick
> : P) : P;\ntype ComponentPropsWithoutRef = PropsWithoutRef<\n React.ComponentProps\n>;\n\ntype Primitives = { [E in typeof NODES[number]]: PrimitiveForwardRefComponent };\ntype PrimitivePropsWithRef = React.ComponentPropsWithRef & {\n asChild?: boolean;\n};\n\ninterface PrimitiveForwardRefComponent\n extends React.ForwardRefExoticComponent> {}\n\n/* -------------------------------------------------------------------------------------------------\n * Primitive\n * -----------------------------------------------------------------------------------------------*/\n\nconst Primitive = NODES.reduce((primitive, node) => {\n const Node = React.forwardRef((props: PrimitivePropsWithRef, forwardedRef: any) => {\n const { asChild, ...primitiveProps } = props;\n const Comp: any = asChild ? Slot : node;\n\n React.useEffect(() => {\n (window as any)[Symbol.for('radix-ui')] = true;\n }, []);\n\n return ;\n });\n\n Node.displayName = `Primitive.${node}`;\n\n return { ...primitive, [node]: Node };\n}, {} as Primitives);\n\n/* -------------------------------------------------------------------------------------------------\n * Utils\n * -----------------------------------------------------------------------------------------------*/\n\n/**\n * Flush custom event dispatch\n * https://github.com/radix-ui/primitives/pull/1378\n *\n * React batches *all* event handlers since version 18, this introduces certain considerations when using custom event types.\n *\n * Internally, React prioritises events in the following order:\n * - discrete\n * - continuous\n * - default\n *\n * https://github.com/facebook/react/blob/a8a4742f1c54493df00da648a3f9d26e3db9c8b5/packages/react-dom/src/events/ReactDOMEventListener.js#L294-L350\n *\n * `discrete` is an important distinction as updates within these events are applied immediately.\n * React however, is not able to infer the priority of custom event types due to how they are detected internally.\n * Because of this, it's possible for updates from custom events to be unexpectedly batched when\n * dispatched by another `discrete` event.\n *\n * In order to ensure that updates from custom events are applied predictably, we need to manually flush the batch.\n * This utility should be used when dispatching a custom event from within another `discrete` event, this utility\n * is not nessesary when dispatching known event types, or if dispatching a custom type inside a non-discrete event.\n * For example:\n *\n * dispatching a known click 👎\n * target.dispatchEvent(new Event(‘click’))\n *\n * dispatching a custom type within a non-discrete event 👎\n * onScroll={(event) => event.target.dispatchEvent(new CustomEvent(‘customType’))}\n *\n * dispatching a custom type within a `discrete` event 👍\n * onPointerDown={(event) => dispatchDiscreteCustomEvent(event.target, new CustomEvent(‘customType’))}\n *\n * Note: though React classifies `focus`, `focusin` and `focusout` events as `discrete`, it's not recommended to use\n * this utility with them. This is because it's possible for those handlers to be called implicitly during render\n * e.g. when focus is within a component as it is unmounted, or when managing focus on mount.\n */\n\nfunction dispatchDiscreteCustomEvent(target: E['target'], event: E) {\n if (target) ReactDOM.flushSync(() => target.dispatchEvent(event));\n}\n\n/* -----------------------------------------------------------------------------------------------*/\n\nconst Root = Primitive;\n\nexport {\n Primitive,\n //\n Root,\n //\n dispatchDiscreteCustomEvent,\n};\nexport type { ComponentPropsWithoutRef, PrimitivePropsWithRef };\n","import * as React from 'react';\nimport { Primitive } from '@radix-ui/react-primitive';\n\nimport type * as Radix from '@radix-ui/react-primitive';\n\n/* -------------------------------------------------------------------------------------------------\n * AspectRatio\n * -----------------------------------------------------------------------------------------------*/\n\nconst NAME = 'AspectRatio';\n\ntype AspectRatioElement = React.ElementRef;\ntype PrimitiveDivProps = Radix.ComponentPropsWithoutRef;\ninterface AspectRatioProps extends PrimitiveDivProps {\n ratio?: number;\n}\n\nconst AspectRatio = React.forwardRef(\n (props, forwardedRef) => {\n const { ratio = 1 / 1, style, ...aspectRatioProps } = props;\n return (\n \n );\n }\n);\n\nAspectRatio.displayName = NAME;\n\n/* -----------------------------------------------------------------------------------------------*/\n\nconst Root = AspectRatio;\n\nexport {\n AspectRatio,\n //\n Root,\n};\nexport type { AspectRatioProps };\n",null,null,null,null,"// FileUpload.js\nimport React, { useCallback, useState } from \"react\";\nimport { useDropzone } from \"react-dropzone\";\nimport { Text, Strong, Box, AspectRatio, Button } from \"@radix-ui/themes\";\nimport \"../App.css\";\n\nconst FileUpload = ({ onFileUpload }) => {\n const [previewImage, setPreviewImage] = useState(null);\n const [selectedFile, setSelectedFile] = useState(null);\n\n const onDrop = useCallback(\n (acceptedFiles) => {\n if (acceptedFiles.length > 0) {\n const file = acceptedFiles[0];\n setSelectedFile(acceptedFiles[0]);\n\n const reader = new FileReader();\n reader.onload = () => {\n setPreviewImage(reader.result);\n };\n reader.readAsDataURL(file);\n }\n },\n []\n );\n \n const handleFileUpload = () => {\n if (selectedFile) {\n onFileUpload(selectedFile);\n }\n };\n\n const { getRootProps, getInputProps } = useDropzone({\n onDrop,\n accept: {\n 'image/jpeg': ['.jpg', '.jpeg', '.JPG', '.JPEG'],\n 'image/png': ['.png'],\n 'image/heic': ['.heic']\n },\n });\n\n return (\n <>\n \n \n \n drag & drop your image here, or click to select files\n \n {previewImage && (\n \n \n \n )}\n \n \n >\n );\n};\n\nexport default FileUpload;\n","'use strict';\n\nexport default function bind(fn, thisArg) {\n return function wrap() {\n return fn.apply(thisArg, arguments);\n };\n}\n","'use strict';\n\nimport bind from './helpers/bind.js';\n\n// utils is a library of generic helper functions non-specific to axios\n\nconst {toString} = Object.prototype;\nconst {getPrototypeOf} = Object;\n\nconst kindOf = (cache => thing => {\n const str = toString.call(thing);\n return cache[str] || (cache[str] = str.slice(8, -1).toLowerCase());\n})(Object.create(null));\n\nconst kindOfTest = (type) => {\n type = type.toLowerCase();\n return (thing) => kindOf(thing) === type\n}\n\nconst typeOfTest = type => thing => typeof thing === type;\n\n/**\n * Determine if a value is an Array\n *\n * @param {Object} val The value to test\n *\n * @returns {boolean} True if value is an Array, otherwise false\n */\nconst {isArray} = Array;\n\n/**\n * Determine if a value is undefined\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if the value is undefined, otherwise false\n */\nconst isUndefined = typeOfTest('undefined');\n\n/**\n * Determine if a value is a Buffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Buffer, otherwise false\n */\nfunction isBuffer(val) {\n return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor)\n && isFunction(val.constructor.isBuffer) && val.constructor.isBuffer(val);\n}\n\n/**\n * Determine if a value is an ArrayBuffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is an ArrayBuffer, otherwise false\n */\nconst isArrayBuffer = kindOfTest('ArrayBuffer');\n\n\n/**\n * Determine if a value is a view on an ArrayBuffer\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false\n */\nfunction isArrayBufferView(val) {\n let result;\n if ((typeof ArrayBuffer !== 'undefined') && (ArrayBuffer.isView)) {\n result = ArrayBuffer.isView(val);\n } else {\n result = (val) && (val.buffer) && (isArrayBuffer(val.buffer));\n }\n return result;\n}\n\n/**\n * Determine if a value is a String\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a String, otherwise false\n */\nconst isString = typeOfTest('string');\n\n/**\n * Determine if a value is a Function\n *\n * @param {*} val The value to test\n * @returns {boolean} True if value is a Function, otherwise false\n */\nconst isFunction = typeOfTest('function');\n\n/**\n * Determine if a value is a Number\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Number, otherwise false\n */\nconst isNumber = typeOfTest('number');\n\n/**\n * Determine if a value is an Object\n *\n * @param {*} thing The value to test\n *\n * @returns {boolean} True if value is an Object, otherwise false\n */\nconst isObject = (thing) => thing !== null && typeof thing === 'object';\n\n/**\n * Determine if a value is a Boolean\n *\n * @param {*} thing The value to test\n * @returns {boolean} True if value is a Boolean, otherwise false\n */\nconst isBoolean = thing => thing === true || thing === false;\n\n/**\n * Determine if a value is a plain Object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a plain Object, otherwise false\n */\nconst isPlainObject = (val) => {\n if (kindOf(val) !== 'object') {\n return false;\n }\n\n const prototype = getPrototypeOf(val);\n return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(Symbol.toStringTag in val) && !(Symbol.iterator in val);\n}\n\n/**\n * Determine if a value is a Date\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Date, otherwise false\n */\nconst isDate = kindOfTest('Date');\n\n/**\n * Determine if a value is a File\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a File, otherwise false\n */\nconst isFile = kindOfTest('File');\n\n/**\n * Determine if a value is a Blob\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Blob, otherwise false\n */\nconst isBlob = kindOfTest('Blob');\n\n/**\n * Determine if a value is a FileList\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a File, otherwise false\n */\nconst isFileList = kindOfTest('FileList');\n\n/**\n * Determine if a value is a Stream\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a Stream, otherwise false\n */\nconst isStream = (val) => isObject(val) && isFunction(val.pipe);\n\n/**\n * Determine if a value is a FormData\n *\n * @param {*} thing The value to test\n *\n * @returns {boolean} True if value is an FormData, otherwise false\n */\nconst isFormData = (thing) => {\n let kind;\n return thing && (\n (typeof FormData === 'function' && thing instanceof FormData) || (\n isFunction(thing.append) && (\n (kind = kindOf(thing)) === 'formdata' ||\n // detect form-data instance\n (kind === 'object' && isFunction(thing.toString) && thing.toString() === '[object FormData]')\n )\n )\n )\n}\n\n/**\n * Determine if a value is a URLSearchParams object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a URLSearchParams object, otherwise false\n */\nconst isURLSearchParams = kindOfTest('URLSearchParams');\n\n/**\n * Trim excess whitespace off the beginning and end of a string\n *\n * @param {String} str The String to trim\n *\n * @returns {String} The String freed of excess whitespace\n */\nconst trim = (str) => str.trim ?\n str.trim() : str.replace(/^[\\s\\uFEFF\\xA0]+|[\\s\\uFEFF\\xA0]+$/g, '');\n\n/**\n * Iterate over an Array or an Object invoking a function for each item.\n *\n * If `obj` is an Array callback will be called passing\n * the value, index, and complete array for each item.\n *\n * If 'obj' is an Object callback will be called passing\n * the value, key, and complete object for each property.\n *\n * @param {Object|Array} obj The object to iterate\n * @param {Function} fn The callback to invoke for each item\n *\n * @param {Boolean} [allOwnKeys = false]\n * @returns {any}\n */\nfunction forEach(obj, fn, {allOwnKeys = false} = {}) {\n // Don't bother if no value provided\n if (obj === null || typeof obj === 'undefined') {\n return;\n }\n\n let i;\n let l;\n\n // Force an array if not already something iterable\n if (typeof obj !== 'object') {\n /*eslint no-param-reassign:0*/\n obj = [obj];\n }\n\n if (isArray(obj)) {\n // Iterate over array values\n for (i = 0, l = obj.length; i < l; i++) {\n fn.call(null, obj[i], i, obj);\n }\n } else {\n // Iterate over object keys\n const keys = allOwnKeys ? Object.getOwnPropertyNames(obj) : Object.keys(obj);\n const len = keys.length;\n let key;\n\n for (i = 0; i < len; i++) {\n key = keys[i];\n fn.call(null, obj[key], key, obj);\n }\n }\n}\n\nfunction findKey(obj, key) {\n key = key.toLowerCase();\n const keys = Object.keys(obj);\n let i = keys.length;\n let _key;\n while (i-- > 0) {\n _key = keys[i];\n if (key === _key.toLowerCase()) {\n return _key;\n }\n }\n return null;\n}\n\nconst _global = (() => {\n /*eslint no-undef:0*/\n if (typeof globalThis !== \"undefined\") return globalThis;\n return typeof self !== \"undefined\" ? self : (typeof window !== 'undefined' ? window : global)\n})();\n\nconst isContextDefined = (context) => !isUndefined(context) && context !== _global;\n\n/**\n * Accepts varargs expecting each argument to be an object, then\n * immutably merges the properties of each object and returns result.\n *\n * When multiple objects contain the same key the later object in\n * the arguments list will take precedence.\n *\n * Example:\n *\n * ```js\n * var result = merge({foo: 123}, {foo: 456});\n * console.log(result.foo); // outputs 456\n * ```\n *\n * @param {Object} obj1 Object to merge\n *\n * @returns {Object} Result of all merge properties\n */\nfunction merge(/* obj1, obj2, obj3, ... */) {\n const {caseless} = isContextDefined(this) && this || {};\n const result = {};\n const assignValue = (val, key) => {\n const targetKey = caseless && findKey(result, key) || key;\n if (isPlainObject(result[targetKey]) && isPlainObject(val)) {\n result[targetKey] = merge(result[targetKey], val);\n } else if (isPlainObject(val)) {\n result[targetKey] = merge({}, val);\n } else if (isArray(val)) {\n result[targetKey] = val.slice();\n } else {\n result[targetKey] = val;\n }\n }\n\n for (let i = 0, l = arguments.length; i < l; i++) {\n arguments[i] && forEach(arguments[i], assignValue);\n }\n return result;\n}\n\n/**\n * Extends object a by mutably adding to it the properties of object b.\n *\n * @param {Object} a The object to be extended\n * @param {Object} b The object to copy properties from\n * @param {Object} thisArg The object to bind function to\n *\n * @param {Boolean} [allOwnKeys]\n * @returns {Object} The resulting value of object a\n */\nconst extend = (a, b, thisArg, {allOwnKeys}= {}) => {\n forEach(b, (val, key) => {\n if (thisArg && isFunction(val)) {\n a[key] = bind(val, thisArg);\n } else {\n a[key] = val;\n }\n }, {allOwnKeys});\n return a;\n}\n\n/**\n * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM)\n *\n * @param {string} content with BOM\n *\n * @returns {string} content value without BOM\n */\nconst stripBOM = (content) => {\n if (content.charCodeAt(0) === 0xFEFF) {\n content = content.slice(1);\n }\n return content;\n}\n\n/**\n * Inherit the prototype methods from one constructor into another\n * @param {function} constructor\n * @param {function} superConstructor\n * @param {object} [props]\n * @param {object} [descriptors]\n *\n * @returns {void}\n */\nconst inherits = (constructor, superConstructor, props, descriptors) => {\n constructor.prototype = Object.create(superConstructor.prototype, descriptors);\n constructor.prototype.constructor = constructor;\n Object.defineProperty(constructor, 'super', {\n value: superConstructor.prototype\n });\n props && Object.assign(constructor.prototype, props);\n}\n\n/**\n * Resolve object with deep prototype chain to a flat object\n * @param {Object} sourceObj source object\n * @param {Object} [destObj]\n * @param {Function|Boolean} [filter]\n * @param {Function} [propFilter]\n *\n * @returns {Object}\n */\nconst toFlatObject = (sourceObj, destObj, filter, propFilter) => {\n let props;\n let i;\n let prop;\n const merged = {};\n\n destObj = destObj || {};\n // eslint-disable-next-line no-eq-null,eqeqeq\n if (sourceObj == null) return destObj;\n\n do {\n props = Object.getOwnPropertyNames(sourceObj);\n i = props.length;\n while (i-- > 0) {\n prop = props[i];\n if ((!propFilter || propFilter(prop, sourceObj, destObj)) && !merged[prop]) {\n destObj[prop] = sourceObj[prop];\n merged[prop] = true;\n }\n }\n sourceObj = filter !== false && getPrototypeOf(sourceObj);\n } while (sourceObj && (!filter || filter(sourceObj, destObj)) && sourceObj !== Object.prototype);\n\n return destObj;\n}\n\n/**\n * Determines whether a string ends with the characters of a specified string\n *\n * @param {String} str\n * @param {String} searchString\n * @param {Number} [position= 0]\n *\n * @returns {boolean}\n */\nconst endsWith = (str, searchString, position) => {\n str = String(str);\n if (position === undefined || position > str.length) {\n position = str.length;\n }\n position -= searchString.length;\n const lastIndex = str.indexOf(searchString, position);\n return lastIndex !== -1 && lastIndex === position;\n}\n\n\n/**\n * Returns new array from array like object or null if failed\n *\n * @param {*} [thing]\n *\n * @returns {?Array}\n */\nconst toArray = (thing) => {\n if (!thing) return null;\n if (isArray(thing)) return thing;\n let i = thing.length;\n if (!isNumber(i)) return null;\n const arr = new Array(i);\n while (i-- > 0) {\n arr[i] = thing[i];\n }\n return arr;\n}\n\n/**\n * Checking if the Uint8Array exists and if it does, it returns a function that checks if the\n * thing passed in is an instance of Uint8Array\n *\n * @param {TypedArray}\n *\n * @returns {Array}\n */\n// eslint-disable-next-line func-names\nconst isTypedArray = (TypedArray => {\n // eslint-disable-next-line func-names\n return thing => {\n return TypedArray && thing instanceof TypedArray;\n };\n})(typeof Uint8Array !== 'undefined' && getPrototypeOf(Uint8Array));\n\n/**\n * For each entry in the object, call the function with the key and value.\n *\n * @param {Object} obj - The object to iterate over.\n * @param {Function} fn - The function to call for each entry.\n *\n * @returns {void}\n */\nconst forEachEntry = (obj, fn) => {\n const generator = obj && obj[Symbol.iterator];\n\n const iterator = generator.call(obj);\n\n let result;\n\n while ((result = iterator.next()) && !result.done) {\n const pair = result.value;\n fn.call(obj, pair[0], pair[1]);\n }\n}\n\n/**\n * It takes a regular expression and a string, and returns an array of all the matches\n *\n * @param {string} regExp - The regular expression to match against.\n * @param {string} str - The string to search.\n *\n * @returns {Array}\n */\nconst matchAll = (regExp, str) => {\n let matches;\n const arr = [];\n\n while ((matches = regExp.exec(str)) !== null) {\n arr.push(matches);\n }\n\n return arr;\n}\n\n/* Checking if the kindOfTest function returns true when passed an HTMLFormElement. */\nconst isHTMLForm = kindOfTest('HTMLFormElement');\n\nconst toCamelCase = str => {\n return str.toLowerCase().replace(/[-_\\s]([a-z\\d])(\\w*)/g,\n function replacer(m, p1, p2) {\n return p1.toUpperCase() + p2;\n }\n );\n};\n\n/* Creating a function that will check if an object has a property. */\nconst hasOwnProperty = (({hasOwnProperty}) => (obj, prop) => hasOwnProperty.call(obj, prop))(Object.prototype);\n\n/**\n * Determine if a value is a RegExp object\n *\n * @param {*} val The value to test\n *\n * @returns {boolean} True if value is a RegExp object, otherwise false\n */\nconst isRegExp = kindOfTest('RegExp');\n\nconst reduceDescriptors = (obj, reducer) => {\n const descriptors = Object.getOwnPropertyDescriptors(obj);\n const reducedDescriptors = {};\n\n forEach(descriptors, (descriptor, name) => {\n let ret;\n if ((ret = reducer(descriptor, name, obj)) !== false) {\n reducedDescriptors[name] = ret || descriptor;\n }\n });\n\n Object.defineProperties(obj, reducedDescriptors);\n}\n\n/**\n * Makes all methods read-only\n * @param {Object} obj\n */\n\nconst freezeMethods = (obj) => {\n reduceDescriptors(obj, (descriptor, name) => {\n // skip restricted props in strict mode\n if (isFunction(obj) && ['arguments', 'caller', 'callee'].indexOf(name) !== -1) {\n return false;\n }\n\n const value = obj[name];\n\n if (!isFunction(value)) return;\n\n descriptor.enumerable = false;\n\n if ('writable' in descriptor) {\n descriptor.writable = false;\n return;\n }\n\n if (!descriptor.set) {\n descriptor.set = () => {\n throw Error('Can not rewrite read-only method \\'' + name + '\\'');\n };\n }\n });\n}\n\nconst toObjectSet = (arrayOrString, delimiter) => {\n const obj = {};\n\n const define = (arr) => {\n arr.forEach(value => {\n obj[value] = true;\n });\n }\n\n isArray(arrayOrString) ? define(arrayOrString) : define(String(arrayOrString).split(delimiter));\n\n return obj;\n}\n\nconst noop = () => {}\n\nconst toFiniteNumber = (value, defaultValue) => {\n value = +value;\n return Number.isFinite(value) ? value : defaultValue;\n}\n\nconst ALPHA = 'abcdefghijklmnopqrstuvwxyz'\n\nconst DIGIT = '0123456789';\n\nconst ALPHABET = {\n DIGIT,\n ALPHA,\n ALPHA_DIGIT: ALPHA + ALPHA.toUpperCase() + DIGIT\n}\n\nconst generateString = (size = 16, alphabet = ALPHABET.ALPHA_DIGIT) => {\n let str = '';\n const {length} = alphabet;\n while (size--) {\n str += alphabet[Math.random() * length|0]\n }\n\n return str;\n}\n\n/**\n * If the thing is a FormData object, return true, otherwise return false.\n *\n * @param {unknown} thing - The thing to check.\n *\n * @returns {boolean}\n */\nfunction isSpecCompliantForm(thing) {\n return !!(thing && isFunction(thing.append) && thing[Symbol.toStringTag] === 'FormData' && thing[Symbol.iterator]);\n}\n\nconst toJSONObject = (obj) => {\n const stack = new Array(10);\n\n const visit = (source, i) => {\n\n if (isObject(source)) {\n if (stack.indexOf(source) >= 0) {\n return;\n }\n\n if(!('toJSON' in source)) {\n stack[i] = source;\n const target = isArray(source) ? [] : {};\n\n forEach(source, (value, key) => {\n const reducedValue = visit(value, i + 1);\n !isUndefined(reducedValue) && (target[key] = reducedValue);\n });\n\n stack[i] = undefined;\n\n return target;\n }\n }\n\n return source;\n }\n\n return visit(obj, 0);\n}\n\nconst isAsyncFn = kindOfTest('AsyncFunction');\n\nconst isThenable = (thing) =>\n thing && (isObject(thing) || isFunction(thing)) && isFunction(thing.then) && isFunction(thing.catch);\n\nexport default {\n isArray,\n isArrayBuffer,\n isBuffer,\n isFormData,\n isArrayBufferView,\n isString,\n isNumber,\n isBoolean,\n isObject,\n isPlainObject,\n isUndefined,\n isDate,\n isFile,\n isBlob,\n isRegExp,\n isFunction,\n isStream,\n isURLSearchParams,\n isTypedArray,\n isFileList,\n forEach,\n merge,\n extend,\n trim,\n stripBOM,\n inherits,\n toFlatObject,\n kindOf,\n kindOfTest,\n endsWith,\n toArray,\n forEachEntry,\n matchAll,\n isHTMLForm,\n hasOwnProperty,\n hasOwnProp: hasOwnProperty, // an alias to avoid ESLint no-prototype-builtins detection\n reduceDescriptors,\n freezeMethods,\n toObjectSet,\n toCamelCase,\n noop,\n toFiniteNumber,\n findKey,\n global: _global,\n isContextDefined,\n ALPHABET,\n generateString,\n isSpecCompliantForm,\n toJSONObject,\n isAsyncFn,\n isThenable\n};\n","'use strict';\n\nimport utils from '../utils.js';\n\n/**\n * Create an Error with the specified message, config, error code, request and response.\n *\n * @param {string} message The error message.\n * @param {string} [code] The error code (for example, 'ECONNABORTED').\n * @param {Object} [config] The config.\n * @param {Object} [request] The request.\n * @param {Object} [response] The response.\n *\n * @returns {Error} The created error.\n */\nfunction AxiosError(message, code, config, request, response) {\n Error.call(this);\n\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, this.constructor);\n } else {\n this.stack = (new Error()).stack;\n }\n\n this.message = message;\n this.name = 'AxiosError';\n code && (this.code = code);\n config && (this.config = config);\n request && (this.request = request);\n response && (this.response = response);\n}\n\nutils.inherits(AxiosError, Error, {\n toJSON: function toJSON() {\n return {\n // Standard\n message: this.message,\n name: this.name,\n // Microsoft\n description: this.description,\n number: this.number,\n // Mozilla\n fileName: this.fileName,\n lineNumber: this.lineNumber,\n columnNumber: this.columnNumber,\n stack: this.stack,\n // Axios\n config: utils.toJSONObject(this.config),\n code: this.code,\n status: this.response && this.response.status ? this.response.status : null\n };\n }\n});\n\nconst prototype = AxiosError.prototype;\nconst descriptors = {};\n\n[\n 'ERR_BAD_OPTION_VALUE',\n 'ERR_BAD_OPTION',\n 'ECONNABORTED',\n 'ETIMEDOUT',\n 'ERR_NETWORK',\n 'ERR_FR_TOO_MANY_REDIRECTS',\n 'ERR_DEPRECATED',\n 'ERR_BAD_RESPONSE',\n 'ERR_BAD_REQUEST',\n 'ERR_CANCELED',\n 'ERR_NOT_SUPPORT',\n 'ERR_INVALID_URL'\n// eslint-disable-next-line func-names\n].forEach(code => {\n descriptors[code] = {value: code};\n});\n\nObject.defineProperties(AxiosError, descriptors);\nObject.defineProperty(prototype, 'isAxiosError', {value: true});\n\n// eslint-disable-next-line func-names\nAxiosError.from = (error, code, config, request, response, customProps) => {\n const axiosError = Object.create(prototype);\n\n utils.toFlatObject(error, axiosError, function filter(obj) {\n return obj !== Error.prototype;\n }, prop => {\n return prop !== 'isAxiosError';\n });\n\n AxiosError.call(axiosError, error.message, code, config, request, response);\n\n axiosError.cause = error;\n\n axiosError.name = error.name;\n\n customProps && Object.assign(axiosError, customProps);\n\n return axiosError;\n};\n\nexport default AxiosError;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosError from '../core/AxiosError.js';\n// temporary hotfix to avoid circular references until AxiosURLSearchParams is refactored\nimport PlatformFormData from '../platform/node/classes/FormData.js';\n\n/**\n * Determines if the given thing is a array or js object.\n *\n * @param {string} thing - The object or array to be visited.\n *\n * @returns {boolean}\n */\nfunction isVisitable(thing) {\n return utils.isPlainObject(thing) || utils.isArray(thing);\n}\n\n/**\n * It removes the brackets from the end of a string\n *\n * @param {string} key - The key of the parameter.\n *\n * @returns {string} the key without the brackets.\n */\nfunction removeBrackets(key) {\n return utils.endsWith(key, '[]') ? key.slice(0, -2) : key;\n}\n\n/**\n * It takes a path, a key, and a boolean, and returns a string\n *\n * @param {string} path - The path to the current key.\n * @param {string} key - The key of the current object being iterated over.\n * @param {string} dots - If true, the key will be rendered with dots instead of brackets.\n *\n * @returns {string} The path to the current key.\n */\nfunction renderKey(path, key, dots) {\n if (!path) return key;\n return path.concat(key).map(function each(token, i) {\n // eslint-disable-next-line no-param-reassign\n token = removeBrackets(token);\n return !dots && i ? '[' + token + ']' : token;\n }).join(dots ? '.' : '');\n}\n\n/**\n * If the array is an array and none of its elements are visitable, then it's a flat array.\n *\n * @param {Array} arr - The array to check\n *\n * @returns {boolean}\n */\nfunction isFlatArray(arr) {\n return utils.isArray(arr) && !arr.some(isVisitable);\n}\n\nconst predicates = utils.toFlatObject(utils, {}, null, function filter(prop) {\n return /^is[A-Z]/.test(prop);\n});\n\n/**\n * Convert a data object to FormData\n *\n * @param {Object} obj\n * @param {?Object} [formData]\n * @param {?Object} [options]\n * @param {Function} [options.visitor]\n * @param {Boolean} [options.metaTokens = true]\n * @param {Boolean} [options.dots = false]\n * @param {?Boolean} [options.indexes = false]\n *\n * @returns {Object}\n **/\n\n/**\n * It converts an object into a FormData object\n *\n * @param {Object} obj - The object to convert to form data.\n * @param {string} formData - The FormData object to append to.\n * @param {Object} options\n *\n * @returns\n */\nfunction toFormData(obj, formData, options) {\n if (!utils.isObject(obj)) {\n throw new TypeError('target must be an object');\n }\n\n // eslint-disable-next-line no-param-reassign\n formData = formData || new (PlatformFormData || FormData)();\n\n // eslint-disable-next-line no-param-reassign\n options = utils.toFlatObject(options, {\n metaTokens: true,\n dots: false,\n indexes: false\n }, false, function defined(option, source) {\n // eslint-disable-next-line no-eq-null,eqeqeq\n return !utils.isUndefined(source[option]);\n });\n\n const metaTokens = options.metaTokens;\n // eslint-disable-next-line no-use-before-define\n const visitor = options.visitor || defaultVisitor;\n const dots = options.dots;\n const indexes = options.indexes;\n const _Blob = options.Blob || typeof Blob !== 'undefined' && Blob;\n const useBlob = _Blob && utils.isSpecCompliantForm(formData);\n\n if (!utils.isFunction(visitor)) {\n throw new TypeError('visitor must be a function');\n }\n\n function convertValue(value) {\n if (value === null) return '';\n\n if (utils.isDate(value)) {\n return value.toISOString();\n }\n\n if (!useBlob && utils.isBlob(value)) {\n throw new AxiosError('Blob is not supported. Use a Buffer instead.');\n }\n\n if (utils.isArrayBuffer(value) || utils.isTypedArray(value)) {\n return useBlob && typeof Blob === 'function' ? new Blob([value]) : Buffer.from(value);\n }\n\n return value;\n }\n\n /**\n * Default visitor.\n *\n * @param {*} value\n * @param {String|Number} key\n * @param {Array} path\n * @this {FormData}\n *\n * @returns {boolean} return true to visit the each prop of the value recursively\n */\n function defaultVisitor(value, key, path) {\n let arr = value;\n\n if (value && !path && typeof value === 'object') {\n if (utils.endsWith(key, '{}')) {\n // eslint-disable-next-line no-param-reassign\n key = metaTokens ? key : key.slice(0, -2);\n // eslint-disable-next-line no-param-reassign\n value = JSON.stringify(value);\n } else if (\n (utils.isArray(value) && isFlatArray(value)) ||\n ((utils.isFileList(value) || utils.endsWith(key, '[]')) && (arr = utils.toArray(value))\n )) {\n // eslint-disable-next-line no-param-reassign\n key = removeBrackets(key);\n\n arr.forEach(function each(el, index) {\n !(utils.isUndefined(el) || el === null) && formData.append(\n // eslint-disable-next-line no-nested-ternary\n indexes === true ? renderKey([key], index, dots) : (indexes === null ? key : key + '[]'),\n convertValue(el)\n );\n });\n return false;\n }\n }\n\n if (isVisitable(value)) {\n return true;\n }\n\n formData.append(renderKey(path, key, dots), convertValue(value));\n\n return false;\n }\n\n const stack = [];\n\n const exposedHelpers = Object.assign(predicates, {\n defaultVisitor,\n convertValue,\n isVisitable\n });\n\n function build(value, path) {\n if (utils.isUndefined(value)) return;\n\n if (stack.indexOf(value) !== -1) {\n throw Error('Circular reference detected in ' + path.join('.'));\n }\n\n stack.push(value);\n\n utils.forEach(value, function each(el, key) {\n const result = !(utils.isUndefined(el) || el === null) && visitor.call(\n formData, el, utils.isString(key) ? key.trim() : key, path, exposedHelpers\n );\n\n if (result === true) {\n build(el, path ? path.concat(key) : [key]);\n }\n });\n\n stack.pop();\n }\n\n if (!utils.isObject(obj)) {\n throw new TypeError('data must be an object');\n }\n\n build(obj);\n\n return formData;\n}\n\nexport default toFormData;\n","'use strict';\n\nimport toFormData from './toFormData.js';\n\n/**\n * It encodes a string by replacing all characters that are not in the unreserved set with\n * their percent-encoded equivalents\n *\n * @param {string} str - The string to encode.\n *\n * @returns {string} The encoded string.\n */\nfunction encode(str) {\n const charMap = {\n '!': '%21',\n \"'\": '%27',\n '(': '%28',\n ')': '%29',\n '~': '%7E',\n '%20': '+',\n '%00': '\\x00'\n };\n return encodeURIComponent(str).replace(/[!'()~]|%20|%00/g, function replacer(match) {\n return charMap[match];\n });\n}\n\n/**\n * It takes a params object and converts it to a FormData object\n *\n * @param {Object} params - The parameters to be converted to a FormData object.\n * @param {Object} options - The options object passed to the Axios constructor.\n *\n * @returns {void}\n */\nfunction AxiosURLSearchParams(params, options) {\n this._pairs = [];\n\n params && toFormData(params, this, options);\n}\n\nconst prototype = AxiosURLSearchParams.prototype;\n\nprototype.append = function append(name, value) {\n this._pairs.push([name, value]);\n};\n\nprototype.toString = function toString(encoder) {\n const _encode = encoder ? function(value) {\n return encoder.call(this, value, encode);\n } : encode;\n\n return this._pairs.map(function each(pair) {\n return _encode(pair[0]) + '=' + _encode(pair[1]);\n }, '').join('&');\n};\n\nexport default AxiosURLSearchParams;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosURLSearchParams from '../helpers/AxiosURLSearchParams.js';\n\n/**\n * It replaces all instances of the characters `:`, `$`, `,`, `+`, `[`, and `]` with their\n * URI encoded counterparts\n *\n * @param {string} val The value to be encoded.\n *\n * @returns {string} The encoded value.\n */\nfunction encode(val) {\n return encodeURIComponent(val).\n replace(/%3A/gi, ':').\n replace(/%24/g, '$').\n replace(/%2C/gi, ',').\n replace(/%20/g, '+').\n replace(/%5B/gi, '[').\n replace(/%5D/gi, ']');\n}\n\n/**\n * Build a URL by appending params to the end\n *\n * @param {string} url The base of the url (e.g., http://www.google.com)\n * @param {object} [params] The params to be appended\n * @param {?object} options\n *\n * @returns {string} The formatted url\n */\nexport default function buildURL(url, params, options) {\n /*eslint no-param-reassign:0*/\n if (!params) {\n return url;\n }\n \n const _encode = options && options.encode || encode;\n\n const serializeFn = options && options.serialize;\n\n let serializedParams;\n\n if (serializeFn) {\n serializedParams = serializeFn(params, options);\n } else {\n serializedParams = utils.isURLSearchParams(params) ?\n params.toString() :\n new AxiosURLSearchParams(params, options).toString(_encode);\n }\n\n if (serializedParams) {\n const hashmarkIndex = url.indexOf(\"#\");\n\n if (hashmarkIndex !== -1) {\n url = url.slice(0, hashmarkIndex);\n }\n url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams;\n }\n\n return url;\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\nclass InterceptorManager {\n constructor() {\n this.handlers = [];\n }\n\n /**\n * Add a new interceptor to the stack\n *\n * @param {Function} fulfilled The function to handle `then` for a `Promise`\n * @param {Function} rejected The function to handle `reject` for a `Promise`\n *\n * @return {Number} An ID used to remove interceptor later\n */\n use(fulfilled, rejected, options) {\n this.handlers.push({\n fulfilled,\n rejected,\n synchronous: options ? options.synchronous : false,\n runWhen: options ? options.runWhen : null\n });\n return this.handlers.length - 1;\n }\n\n /**\n * Remove an interceptor from the stack\n *\n * @param {Number} id The ID that was returned by `use`\n *\n * @returns {Boolean} `true` if the interceptor was removed, `false` otherwise\n */\n eject(id) {\n if (this.handlers[id]) {\n this.handlers[id] = null;\n }\n }\n\n /**\n * Clear all interceptors from the stack\n *\n * @returns {void}\n */\n clear() {\n if (this.handlers) {\n this.handlers = [];\n }\n }\n\n /**\n * Iterate over all the registered interceptors\n *\n * This method is particularly useful for skipping over any\n * interceptors that may have become `null` calling `eject`.\n *\n * @param {Function} fn The function to call for each interceptor\n *\n * @returns {void}\n */\n forEach(fn) {\n utils.forEach(this.handlers, function forEachHandler(h) {\n if (h !== null) {\n fn(h);\n }\n });\n }\n}\n\nexport default InterceptorManager;\n","'use strict';\n\nexport default {\n silentJSONParsing: true,\n forcedJSONParsing: true,\n clarifyTimeoutError: false\n};\n","import URLSearchParams from './classes/URLSearchParams.js'\nimport FormData from './classes/FormData.js'\nimport Blob from './classes/Blob.js'\n\nexport default {\n isBrowser: true,\n classes: {\n URLSearchParams,\n FormData,\n Blob\n },\n protocols: ['http', 'https', 'file', 'blob', 'url', 'data']\n};\n","'use strict';\n\nimport AxiosURLSearchParams from '../../../helpers/AxiosURLSearchParams.js';\nexport default typeof URLSearchParams !== 'undefined' ? URLSearchParams : AxiosURLSearchParams;\n","'use strict';\n\nexport default typeof FormData !== 'undefined' ? FormData : null;\n","'use strict'\n\nexport default typeof Blob !== 'undefined' ? Blob : null\n","const hasBrowserEnv = typeof window !== 'undefined' && typeof document !== 'undefined';\n\n/**\n * Determine if we're running in a standard browser environment\n *\n * This allows axios to run in a web worker, and react-native.\n * Both environments support XMLHttpRequest, but not fully standard globals.\n *\n * web workers:\n * typeof window -> undefined\n * typeof document -> undefined\n *\n * react-native:\n * navigator.product -> 'ReactNative'\n * nativescript\n * navigator.product -> 'NativeScript' or 'NS'\n *\n * @returns {boolean}\n */\nconst hasStandardBrowserEnv = (\n (product) => {\n return hasBrowserEnv && ['ReactNative', 'NativeScript', 'NS'].indexOf(product) < 0\n })(typeof navigator !== 'undefined' && navigator.product);\n\n/**\n * Determine if we're running in a standard browser webWorker environment\n *\n * Although the `isStandardBrowserEnv` method indicates that\n * `allows axios to run in a web worker`, the WebWorker will still be\n * filtered out due to its judgment standard\n * `typeof window !== 'undefined' && typeof document !== 'undefined'`.\n * This leads to a problem when axios post `FormData` in webWorker\n */\nconst hasStandardBrowserWebWorkerEnv = (() => {\n return (\n typeof WorkerGlobalScope !== 'undefined' &&\n // eslint-disable-next-line no-undef\n self instanceof WorkerGlobalScope &&\n typeof self.importScripts === 'function'\n );\n})();\n\nexport {\n hasBrowserEnv,\n hasStandardBrowserWebWorkerEnv,\n hasStandardBrowserEnv\n}\n","import platform from './node/index.js';\nimport * as utils from './common/utils.js';\n\nexport default {\n ...utils,\n ...platform\n}\n","'use strict';\n\nimport utils from '../utils.js';\n\n/**\n * It takes a string like `foo[x][y][z]` and returns an array like `['foo', 'x', 'y', 'z']\n *\n * @param {string} name - The name of the property to get.\n *\n * @returns An array of strings.\n */\nfunction parsePropPath(name) {\n // foo[x][y][z]\n // foo.x.y.z\n // foo-x-y-z\n // foo x y z\n return utils.matchAll(/\\w+|\\[(\\w*)]/g, name).map(match => {\n return match[0] === '[]' ? '' : match[1] || match[0];\n });\n}\n\n/**\n * Convert an array to an object.\n *\n * @param {Array} arr - The array to convert to an object.\n *\n * @returns An object with the same keys and values as the array.\n */\nfunction arrayToObject(arr) {\n const obj = {};\n const keys = Object.keys(arr);\n let i;\n const len = keys.length;\n let key;\n for (i = 0; i < len; i++) {\n key = keys[i];\n obj[key] = arr[key];\n }\n return obj;\n}\n\n/**\n * It takes a FormData object and returns a JavaScript object\n *\n * @param {string} formData The FormData object to convert to JSON.\n *\n * @returns {Object | null} The converted object.\n */\nfunction formDataToJSON(formData) {\n function buildPath(path, value, target, index) {\n let name = path[index++];\n const isNumericKey = Number.isFinite(+name);\n const isLast = index >= path.length;\n name = !name && utils.isArray(target) ? target.length : name;\n\n if (isLast) {\n if (utils.hasOwnProp(target, name)) {\n target[name] = [target[name], value];\n } else {\n target[name] = value;\n }\n\n return !isNumericKey;\n }\n\n if (!target[name] || !utils.isObject(target[name])) {\n target[name] = [];\n }\n\n const result = buildPath(path, value, target[name], index);\n\n if (result && utils.isArray(target[name])) {\n target[name] = arrayToObject(target[name]);\n }\n\n return !isNumericKey;\n }\n\n if (utils.isFormData(formData) && utils.isFunction(formData.entries)) {\n const obj = {};\n\n utils.forEachEntry(formData, (name, value) => {\n buildPath(parsePropPath(name), value, obj, 0);\n });\n\n return obj;\n }\n\n return null;\n}\n\nexport default formDataToJSON;\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosError from '../core/AxiosError.js';\nimport transitionalDefaults from './transitional.js';\nimport toFormData from '../helpers/toFormData.js';\nimport toURLEncodedForm from '../helpers/toURLEncodedForm.js';\nimport platform from '../platform/index.js';\nimport formDataToJSON from '../helpers/formDataToJSON.js';\n\n/**\n * It takes a string, tries to parse it, and if it fails, it returns the stringified version\n * of the input\n *\n * @param {any} rawValue - The value to be stringified.\n * @param {Function} parser - A function that parses a string into a JavaScript object.\n * @param {Function} encoder - A function that takes a value and returns a string.\n *\n * @returns {string} A stringified version of the rawValue.\n */\nfunction stringifySafely(rawValue, parser, encoder) {\n if (utils.isString(rawValue)) {\n try {\n (parser || JSON.parse)(rawValue);\n return utils.trim(rawValue);\n } catch (e) {\n if (e.name !== 'SyntaxError') {\n throw e;\n }\n }\n }\n\n return (encoder || JSON.stringify)(rawValue);\n}\n\nconst defaults = {\n\n transitional: transitionalDefaults,\n\n adapter: ['xhr', 'http'],\n\n transformRequest: [function transformRequest(data, headers) {\n const contentType = headers.getContentType() || '';\n const hasJSONContentType = contentType.indexOf('application/json') > -1;\n const isObjectPayload = utils.isObject(data);\n\n if (isObjectPayload && utils.isHTMLForm(data)) {\n data = new FormData(data);\n }\n\n const isFormData = utils.isFormData(data);\n\n if (isFormData) {\n if (!hasJSONContentType) {\n return data;\n }\n return hasJSONContentType ? JSON.stringify(formDataToJSON(data)) : data;\n }\n\n if (utils.isArrayBuffer(data) ||\n utils.isBuffer(data) ||\n utils.isStream(data) ||\n utils.isFile(data) ||\n utils.isBlob(data)\n ) {\n return data;\n }\n if (utils.isArrayBufferView(data)) {\n return data.buffer;\n }\n if (utils.isURLSearchParams(data)) {\n headers.setContentType('application/x-www-form-urlencoded;charset=utf-8', false);\n return data.toString();\n }\n\n let isFileList;\n\n if (isObjectPayload) {\n if (contentType.indexOf('application/x-www-form-urlencoded') > -1) {\n return toURLEncodedForm(data, this.formSerializer).toString();\n }\n\n if ((isFileList = utils.isFileList(data)) || contentType.indexOf('multipart/form-data') > -1) {\n const _FormData = this.env && this.env.FormData;\n\n return toFormData(\n isFileList ? {'files[]': data} : data,\n _FormData && new _FormData(),\n this.formSerializer\n );\n }\n }\n\n if (isObjectPayload || hasJSONContentType ) {\n headers.setContentType('application/json', false);\n return stringifySafely(data);\n }\n\n return data;\n }],\n\n transformResponse: [function transformResponse(data) {\n const transitional = this.transitional || defaults.transitional;\n const forcedJSONParsing = transitional && transitional.forcedJSONParsing;\n const JSONRequested = this.responseType === 'json';\n\n if (data && utils.isString(data) && ((forcedJSONParsing && !this.responseType) || JSONRequested)) {\n const silentJSONParsing = transitional && transitional.silentJSONParsing;\n const strictJSONParsing = !silentJSONParsing && JSONRequested;\n\n try {\n return JSON.parse(data);\n } catch (e) {\n if (strictJSONParsing) {\n if (e.name === 'SyntaxError') {\n throw AxiosError.from(e, AxiosError.ERR_BAD_RESPONSE, this, null, this.response);\n }\n throw e;\n }\n }\n }\n\n return data;\n }],\n\n /**\n * A timeout in milliseconds to abort a request. If set to 0 (default) a\n * timeout is not created.\n */\n timeout: 0,\n\n xsrfCookieName: 'XSRF-TOKEN',\n xsrfHeaderName: 'X-XSRF-TOKEN',\n\n maxContentLength: -1,\n maxBodyLength: -1,\n\n env: {\n FormData: platform.classes.FormData,\n Blob: platform.classes.Blob\n },\n\n validateStatus: function validateStatus(status) {\n return status >= 200 && status < 300;\n },\n\n headers: {\n common: {\n 'Accept': 'application/json, text/plain, */*',\n 'Content-Type': undefined\n }\n }\n};\n\nutils.forEach(['delete', 'get', 'head', 'post', 'put', 'patch'], (method) => {\n defaults.headers[method] = {};\n});\n\nexport default defaults;\n","'use strict';\n\nimport utils from '../utils.js';\nimport toFormData from './toFormData.js';\nimport platform from '../platform/index.js';\n\nexport default function toURLEncodedForm(data, options) {\n return toFormData(data, new platform.classes.URLSearchParams(), Object.assign({\n visitor: function(value, key, path, helpers) {\n if (platform.isNode && utils.isBuffer(value)) {\n this.append(key, value.toString('base64'));\n return false;\n }\n\n return helpers.defaultVisitor.apply(this, arguments);\n }\n }, options));\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\n// RawAxiosHeaders whose duplicates are ignored by node\n// c.f. https://nodejs.org/api/http.html#http_message_headers\nconst ignoreDuplicateOf = utils.toObjectSet([\n 'age', 'authorization', 'content-length', 'content-type', 'etag',\n 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since',\n 'last-modified', 'location', 'max-forwards', 'proxy-authorization',\n 'referer', 'retry-after', 'user-agent'\n]);\n\n/**\n * Parse headers into an object\n *\n * ```\n * Date: Wed, 27 Aug 2014 08:58:49 GMT\n * Content-Type: application/json\n * Connection: keep-alive\n * Transfer-Encoding: chunked\n * ```\n *\n * @param {String} rawHeaders Headers needing to be parsed\n *\n * @returns {Object} Headers parsed into an object\n */\nexport default rawHeaders => {\n const parsed = {};\n let key;\n let val;\n let i;\n\n rawHeaders && rawHeaders.split('\\n').forEach(function parser(line) {\n i = line.indexOf(':');\n key = line.substring(0, i).trim().toLowerCase();\n val = line.substring(i + 1).trim();\n\n if (!key || (parsed[key] && ignoreDuplicateOf[key])) {\n return;\n }\n\n if (key === 'set-cookie') {\n if (parsed[key]) {\n parsed[key].push(val);\n } else {\n parsed[key] = [val];\n }\n } else {\n parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val;\n }\n });\n\n return parsed;\n};\n","'use strict';\n\nimport utils from '../utils.js';\nimport parseHeaders from '../helpers/parseHeaders.js';\n\nconst $internals = Symbol('internals');\n\nfunction normalizeHeader(header) {\n return header && String(header).trim().toLowerCase();\n}\n\nfunction normalizeValue(value) {\n if (value === false || value == null) {\n return value;\n }\n\n return utils.isArray(value) ? value.map(normalizeValue) : String(value);\n}\n\nfunction parseTokens(str) {\n const tokens = Object.create(null);\n const tokensRE = /([^\\s,;=]+)\\s*(?:=\\s*([^,;]+))?/g;\n let match;\n\n while ((match = tokensRE.exec(str))) {\n tokens[match[1]] = match[2];\n }\n\n return tokens;\n}\n\nconst isValidHeaderName = (str) => /^[-_a-zA-Z0-9^`|~,!#$%&'*+.]+$/.test(str.trim());\n\nfunction matchHeaderValue(context, value, header, filter, isHeaderNameFilter) {\n if (utils.isFunction(filter)) {\n return filter.call(this, value, header);\n }\n\n if (isHeaderNameFilter) {\n value = header;\n }\n\n if (!utils.isString(value)) return;\n\n if (utils.isString(filter)) {\n return value.indexOf(filter) !== -1;\n }\n\n if (utils.isRegExp(filter)) {\n return filter.test(value);\n }\n}\n\nfunction formatHeader(header) {\n return header.trim()\n .toLowerCase().replace(/([a-z\\d])(\\w*)/g, (w, char, str) => {\n return char.toUpperCase() + str;\n });\n}\n\nfunction buildAccessors(obj, header) {\n const accessorName = utils.toCamelCase(' ' + header);\n\n ['get', 'set', 'has'].forEach(methodName => {\n Object.defineProperty(obj, methodName + accessorName, {\n value: function(arg1, arg2, arg3) {\n return this[methodName].call(this, header, arg1, arg2, arg3);\n },\n configurable: true\n });\n });\n}\n\nclass AxiosHeaders {\n constructor(headers) {\n headers && this.set(headers);\n }\n\n set(header, valueOrRewrite, rewrite) {\n const self = this;\n\n function setHeader(_value, _header, _rewrite) {\n const lHeader = normalizeHeader(_header);\n\n if (!lHeader) {\n throw new Error('header name must be a non-empty string');\n }\n\n const key = utils.findKey(self, lHeader);\n\n if(!key || self[key] === undefined || _rewrite === true || (_rewrite === undefined && self[key] !== false)) {\n self[key || _header] = normalizeValue(_value);\n }\n }\n\n const setHeaders = (headers, _rewrite) =>\n utils.forEach(headers, (_value, _header) => setHeader(_value, _header, _rewrite));\n\n if (utils.isPlainObject(header) || header instanceof this.constructor) {\n setHeaders(header, valueOrRewrite)\n } else if(utils.isString(header) && (header = header.trim()) && !isValidHeaderName(header)) {\n setHeaders(parseHeaders(header), valueOrRewrite);\n } else {\n header != null && setHeader(valueOrRewrite, header, rewrite);\n }\n\n return this;\n }\n\n get(header, parser) {\n header = normalizeHeader(header);\n\n if (header) {\n const key = utils.findKey(this, header);\n\n if (key) {\n const value = this[key];\n\n if (!parser) {\n return value;\n }\n\n if (parser === true) {\n return parseTokens(value);\n }\n\n if (utils.isFunction(parser)) {\n return parser.call(this, value, key);\n }\n\n if (utils.isRegExp(parser)) {\n return parser.exec(value);\n }\n\n throw new TypeError('parser must be boolean|regexp|function');\n }\n }\n }\n\n has(header, matcher) {\n header = normalizeHeader(header);\n\n if (header) {\n const key = utils.findKey(this, header);\n\n return !!(key && this[key] !== undefined && (!matcher || matchHeaderValue(this, this[key], key, matcher)));\n }\n\n return false;\n }\n\n delete(header, matcher) {\n const self = this;\n let deleted = false;\n\n function deleteHeader(_header) {\n _header = normalizeHeader(_header);\n\n if (_header) {\n const key = utils.findKey(self, _header);\n\n if (key && (!matcher || matchHeaderValue(self, self[key], key, matcher))) {\n delete self[key];\n\n deleted = true;\n }\n }\n }\n\n if (utils.isArray(header)) {\n header.forEach(deleteHeader);\n } else {\n deleteHeader(header);\n }\n\n return deleted;\n }\n\n clear(matcher) {\n const keys = Object.keys(this);\n let i = keys.length;\n let deleted = false;\n\n while (i--) {\n const key = keys[i];\n if(!matcher || matchHeaderValue(this, this[key], key, matcher, true)) {\n delete this[key];\n deleted = true;\n }\n }\n\n return deleted;\n }\n\n normalize(format) {\n const self = this;\n const headers = {};\n\n utils.forEach(this, (value, header) => {\n const key = utils.findKey(headers, header);\n\n if (key) {\n self[key] = normalizeValue(value);\n delete self[header];\n return;\n }\n\n const normalized = format ? formatHeader(header) : String(header).trim();\n\n if (normalized !== header) {\n delete self[header];\n }\n\n self[normalized] = normalizeValue(value);\n\n headers[normalized] = true;\n });\n\n return this;\n }\n\n concat(...targets) {\n return this.constructor.concat(this, ...targets);\n }\n\n toJSON(asStrings) {\n const obj = Object.create(null);\n\n utils.forEach(this, (value, header) => {\n value != null && value !== false && (obj[header] = asStrings && utils.isArray(value) ? value.join(', ') : value);\n });\n\n return obj;\n }\n\n [Symbol.iterator]() {\n return Object.entries(this.toJSON())[Symbol.iterator]();\n }\n\n toString() {\n return Object.entries(this.toJSON()).map(([header, value]) => header + ': ' + value).join('\\n');\n }\n\n get [Symbol.toStringTag]() {\n return 'AxiosHeaders';\n }\n\n static from(thing) {\n return thing instanceof this ? thing : new this(thing);\n }\n\n static concat(first, ...targets) {\n const computed = new this(first);\n\n targets.forEach((target) => computed.set(target));\n\n return computed;\n }\n\n static accessor(header) {\n const internals = this[$internals] = (this[$internals] = {\n accessors: {}\n });\n\n const accessors = internals.accessors;\n const prototype = this.prototype;\n\n function defineAccessor(_header) {\n const lHeader = normalizeHeader(_header);\n\n if (!accessors[lHeader]) {\n buildAccessors(prototype, _header);\n accessors[lHeader] = true;\n }\n }\n\n utils.isArray(header) ? header.forEach(defineAccessor) : defineAccessor(header);\n\n return this;\n }\n}\n\nAxiosHeaders.accessor(['Content-Type', 'Content-Length', 'Accept', 'Accept-Encoding', 'User-Agent', 'Authorization']);\n\n// reserved names hotfix\nutils.reduceDescriptors(AxiosHeaders.prototype, ({value}, key) => {\n let mapped = key[0].toUpperCase() + key.slice(1); // map `set` => `Set`\n return {\n get: () => value,\n set(headerValue) {\n this[mapped] = headerValue;\n }\n }\n});\n\nutils.freezeMethods(AxiosHeaders);\n\nexport default AxiosHeaders;\n","'use strict';\n\nimport utils from './../utils.js';\nimport defaults from '../defaults/index.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\n\n/**\n * Transform the data for a request or a response\n *\n * @param {Array|Function} fns A single function or Array of functions\n * @param {?Object} response The response object\n *\n * @returns {*} The resulting transformed data\n */\nexport default function transformData(fns, response) {\n const config = this || defaults;\n const context = response || config;\n const headers = AxiosHeaders.from(context.headers);\n let data = context.data;\n\n utils.forEach(fns, function transform(fn) {\n data = fn.call(config, data, headers.normalize(), response ? response.status : undefined);\n });\n\n headers.normalize();\n\n return data;\n}\n","'use strict';\n\nexport default function isCancel(value) {\n return !!(value && value.__CANCEL__);\n}\n","'use strict';\n\nimport AxiosError from '../core/AxiosError.js';\nimport utils from '../utils.js';\n\n/**\n * A `CanceledError` is an object that is thrown when an operation is canceled.\n *\n * @param {string=} message The message.\n * @param {Object=} config The config.\n * @param {Object=} request The request.\n *\n * @returns {CanceledError} The created error.\n */\nfunction CanceledError(message, config, request) {\n // eslint-disable-next-line no-eq-null,eqeqeq\n AxiosError.call(this, message == null ? 'canceled' : message, AxiosError.ERR_CANCELED, config, request);\n this.name = 'CanceledError';\n}\n\nutils.inherits(CanceledError, AxiosError, {\n __CANCEL__: true\n});\n\nexport default CanceledError;\n","import utils from './../utils.js';\nimport platform from '../platform/index.js';\n\nexport default platform.hasStandardBrowserEnv ?\n\n // Standard browser envs support document.cookie\n {\n write(name, value, expires, path, domain, secure) {\n const cookie = [name + '=' + encodeURIComponent(value)];\n\n utils.isNumber(expires) && cookie.push('expires=' + new Date(expires).toGMTString());\n\n utils.isString(path) && cookie.push('path=' + path);\n\n utils.isString(domain) && cookie.push('domain=' + domain);\n\n secure === true && cookie.push('secure');\n\n document.cookie = cookie.join('; ');\n },\n\n read(name) {\n const match = document.cookie.match(new RegExp('(^|;\\\\s*)(' + name + ')=([^;]*)'));\n return (match ? decodeURIComponent(match[3]) : null);\n },\n\n remove(name) {\n this.write(name, '', Date.now() - 86400000);\n }\n }\n\n :\n\n // Non-standard browser env (web workers, react-native) lack needed support.\n {\n write() {},\n read() {\n return null;\n },\n remove() {}\n };\n\n","'use strict';\n\nimport isAbsoluteURL from '../helpers/isAbsoluteURL.js';\nimport combineURLs from '../helpers/combineURLs.js';\n\n/**\n * Creates a new URL by combining the baseURL with the requestedURL,\n * only when the requestedURL is not already an absolute URL.\n * If the requestURL is absolute, this function returns the requestedURL untouched.\n *\n * @param {string} baseURL The base URL\n * @param {string} requestedURL Absolute or relative URL to combine\n *\n * @returns {string} The combined full path\n */\nexport default function buildFullPath(baseURL, requestedURL) {\n if (baseURL && !isAbsoluteURL(requestedURL)) {\n return combineURLs(baseURL, requestedURL);\n }\n return requestedURL;\n}\n","'use strict';\n\n/**\n * Determines whether the specified URL is absolute\n *\n * @param {string} url The URL to test\n *\n * @returns {boolean} True if the specified URL is absolute, otherwise false\n */\nexport default function isAbsoluteURL(url) {\n // A URL is considered absolute if it begins with \"://\" or \"//\" (protocol-relative URL).\n // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed\n // by any combination of letters, digits, plus, period, or hyphen.\n return /^([a-z][a-z\\d+\\-.]*:)?\\/\\//i.test(url);\n}\n","'use strict';\n\n/**\n * Creates a new URL by combining the specified URLs\n *\n * @param {string} baseURL The base URL\n * @param {string} relativeURL The relative URL\n *\n * @returns {string} The combined URL\n */\nexport default function combineURLs(baseURL, relativeURL) {\n return relativeURL\n ? baseURL.replace(/\\/+$/, '') + '/' + relativeURL.replace(/^\\/+/, '')\n : baseURL;\n}\n","'use strict';\n\nimport utils from './../utils.js';\nimport platform from '../platform/index.js';\n\nexport default platform.hasStandardBrowserEnv ?\n\n// Standard browser envs have full support of the APIs needed to test\n// whether the request URL is of the same origin as current location.\n (function standardBrowserEnv() {\n const msie = /(msie|trident)/i.test(navigator.userAgent);\n const urlParsingNode = document.createElement('a');\n let originURL;\n\n /**\n * Parse a URL to discover its components\n *\n * @param {String} url The URL to be parsed\n * @returns {Object}\n */\n function resolveURL(url) {\n let href = url;\n\n if (msie) {\n // IE needs attribute set twice to normalize properties\n urlParsingNode.setAttribute('href', href);\n href = urlParsingNode.href;\n }\n\n urlParsingNode.setAttribute('href', href);\n\n // urlParsingNode provides the UrlUtils interface - http://url.spec.whatwg.org/#urlutils\n return {\n href: urlParsingNode.href,\n protocol: urlParsingNode.protocol ? urlParsingNode.protocol.replace(/:$/, '') : '',\n host: urlParsingNode.host,\n search: urlParsingNode.search ? urlParsingNode.search.replace(/^\\?/, '') : '',\n hash: urlParsingNode.hash ? urlParsingNode.hash.replace(/^#/, '') : '',\n hostname: urlParsingNode.hostname,\n port: urlParsingNode.port,\n pathname: (urlParsingNode.pathname.charAt(0) === '/') ?\n urlParsingNode.pathname :\n '/' + urlParsingNode.pathname\n };\n }\n\n originURL = resolveURL(window.location.href);\n\n /**\n * Determine if a URL shares the same origin as the current location\n *\n * @param {String} requestURL The URL to test\n * @returns {boolean} True if URL shares the same origin, otherwise false\n */\n return function isURLSameOrigin(requestURL) {\n const parsed = (utils.isString(requestURL)) ? resolveURL(requestURL) : requestURL;\n return (parsed.protocol === originURL.protocol &&\n parsed.host === originURL.host);\n };\n })() :\n\n // Non standard browser envs (web workers, react-native) lack needed support.\n (function nonStandardBrowserEnv() {\n return function isURLSameOrigin() {\n return true;\n };\n })();\n","'use strict';\n\n/**\n * Calculate data maxRate\n * @param {Number} [samplesCount= 10]\n * @param {Number} [min= 1000]\n * @returns {Function}\n */\nfunction speedometer(samplesCount, min) {\n samplesCount = samplesCount || 10;\n const bytes = new Array(samplesCount);\n const timestamps = new Array(samplesCount);\n let head = 0;\n let tail = 0;\n let firstSampleTS;\n\n min = min !== undefined ? min : 1000;\n\n return function push(chunkLength) {\n const now = Date.now();\n\n const startedAt = timestamps[tail];\n\n if (!firstSampleTS) {\n firstSampleTS = now;\n }\n\n bytes[head] = chunkLength;\n timestamps[head] = now;\n\n let i = tail;\n let bytesCount = 0;\n\n while (i !== head) {\n bytesCount += bytes[i++];\n i = i % samplesCount;\n }\n\n head = (head + 1) % samplesCount;\n\n if (head === tail) {\n tail = (tail + 1) % samplesCount;\n }\n\n if (now - firstSampleTS < min) {\n return;\n }\n\n const passed = startedAt && now - startedAt;\n\n return passed ? Math.round(bytesCount * 1000 / passed) : undefined;\n };\n}\n\nexport default speedometer;\n","'use strict';\n\nimport utils from './../utils.js';\nimport settle from './../core/settle.js';\nimport cookies from './../helpers/cookies.js';\nimport buildURL from './../helpers/buildURL.js';\nimport buildFullPath from '../core/buildFullPath.js';\nimport isURLSameOrigin from './../helpers/isURLSameOrigin.js';\nimport transitionalDefaults from '../defaults/transitional.js';\nimport AxiosError from '../core/AxiosError.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport parseProtocol from '../helpers/parseProtocol.js';\nimport platform from '../platform/index.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport speedometer from '../helpers/speedometer.js';\n\nfunction progressEventReducer(listener, isDownloadStream) {\n let bytesNotified = 0;\n const _speedometer = speedometer(50, 250);\n\n return e => {\n const loaded = e.loaded;\n const total = e.lengthComputable ? e.total : undefined;\n const progressBytes = loaded - bytesNotified;\n const rate = _speedometer(progressBytes);\n const inRange = loaded <= total;\n\n bytesNotified = loaded;\n\n const data = {\n loaded,\n total,\n progress: total ? (loaded / total) : undefined,\n bytes: progressBytes,\n rate: rate ? rate : undefined,\n estimated: rate && total && inRange ? (total - loaded) / rate : undefined,\n event: e\n };\n\n data[isDownloadStream ? 'download' : 'upload'] = true;\n\n listener(data);\n };\n}\n\nconst isXHRAdapterSupported = typeof XMLHttpRequest !== 'undefined';\n\nexport default isXHRAdapterSupported && function (config) {\n return new Promise(function dispatchXhrRequest(resolve, reject) {\n let requestData = config.data;\n const requestHeaders = AxiosHeaders.from(config.headers).normalize();\n let {responseType, withXSRFToken} = config;\n let onCanceled;\n function done() {\n if (config.cancelToken) {\n config.cancelToken.unsubscribe(onCanceled);\n }\n\n if (config.signal) {\n config.signal.removeEventListener('abort', onCanceled);\n }\n }\n\n let contentType;\n\n if (utils.isFormData(requestData)) {\n if (platform.hasStandardBrowserEnv || platform.hasStandardBrowserWebWorkerEnv) {\n requestHeaders.setContentType(false); // Let the browser set it\n } else if ((contentType = requestHeaders.getContentType()) !== false) {\n // fix semicolon duplication issue for ReactNative FormData implementation\n const [type, ...tokens] = contentType ? contentType.split(';').map(token => token.trim()).filter(Boolean) : [];\n requestHeaders.setContentType([type || 'multipart/form-data', ...tokens].join('; '));\n }\n }\n\n let request = new XMLHttpRequest();\n\n // HTTP basic authentication\n if (config.auth) {\n const username = config.auth.username || '';\n const password = config.auth.password ? unescape(encodeURIComponent(config.auth.password)) : '';\n requestHeaders.set('Authorization', 'Basic ' + btoa(username + ':' + password));\n }\n\n const fullPath = buildFullPath(config.baseURL, config.url);\n\n request.open(config.method.toUpperCase(), buildURL(fullPath, config.params, config.paramsSerializer), true);\n\n // Set the request timeout in MS\n request.timeout = config.timeout;\n\n function onloadend() {\n if (!request) {\n return;\n }\n // Prepare the response\n const responseHeaders = AxiosHeaders.from(\n 'getAllResponseHeaders' in request && request.getAllResponseHeaders()\n );\n const responseData = !responseType || responseType === 'text' || responseType === 'json' ?\n request.responseText : request.response;\n const response = {\n data: responseData,\n status: request.status,\n statusText: request.statusText,\n headers: responseHeaders,\n config,\n request\n };\n\n settle(function _resolve(value) {\n resolve(value);\n done();\n }, function _reject(err) {\n reject(err);\n done();\n }, response);\n\n // Clean up request\n request = null;\n }\n\n if ('onloadend' in request) {\n // Use onloadend if available\n request.onloadend = onloadend;\n } else {\n // Listen for ready state to emulate onloadend\n request.onreadystatechange = function handleLoad() {\n if (!request || request.readyState !== 4) {\n return;\n }\n\n // The request errored out and we didn't get a response, this will be\n // handled by onerror instead\n // With one exception: request that using file: protocol, most browsers\n // will return status as 0 even though it's a successful request\n if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) {\n return;\n }\n // readystate handler is calling before onerror or ontimeout handlers,\n // so we should call onloadend on the next 'tick'\n setTimeout(onloadend);\n };\n }\n\n // Handle browser request cancellation (as opposed to a manual cancellation)\n request.onabort = function handleAbort() {\n if (!request) {\n return;\n }\n\n reject(new AxiosError('Request aborted', AxiosError.ECONNABORTED, config, request));\n\n // Clean up request\n request = null;\n };\n\n // Handle low level network errors\n request.onerror = function handleError() {\n // Real errors are hidden from us by the browser\n // onerror should only fire if it's a network error\n reject(new AxiosError('Network Error', AxiosError.ERR_NETWORK, config, request));\n\n // Clean up request\n request = null;\n };\n\n // Handle timeout\n request.ontimeout = function handleTimeout() {\n let timeoutErrorMessage = config.timeout ? 'timeout of ' + config.timeout + 'ms exceeded' : 'timeout exceeded';\n const transitional = config.transitional || transitionalDefaults;\n if (config.timeoutErrorMessage) {\n timeoutErrorMessage = config.timeoutErrorMessage;\n }\n reject(new AxiosError(\n timeoutErrorMessage,\n transitional.clarifyTimeoutError ? AxiosError.ETIMEDOUT : AxiosError.ECONNABORTED,\n config,\n request));\n\n // Clean up request\n request = null;\n };\n\n // Add xsrf header\n // This is only done if running in a standard browser environment.\n // Specifically not if we're in a web worker, or react-native.\n if(platform.hasStandardBrowserEnv) {\n withXSRFToken && utils.isFunction(withXSRFToken) && (withXSRFToken = withXSRFToken(config));\n\n if (withXSRFToken || (withXSRFToken !== false && isURLSameOrigin(fullPath))) {\n // Add xsrf header\n const xsrfValue = config.xsrfHeaderName && config.xsrfCookieName && cookies.read(config.xsrfCookieName);\n\n if (xsrfValue) {\n requestHeaders.set(config.xsrfHeaderName, xsrfValue);\n }\n }\n }\n\n // Remove Content-Type if data is undefined\n requestData === undefined && requestHeaders.setContentType(null);\n\n // Add headers to the request\n if ('setRequestHeader' in request) {\n utils.forEach(requestHeaders.toJSON(), function setRequestHeader(val, key) {\n request.setRequestHeader(key, val);\n });\n }\n\n // Add withCredentials to request if needed\n if (!utils.isUndefined(config.withCredentials)) {\n request.withCredentials = !!config.withCredentials;\n }\n\n // Add responseType to request if needed\n if (responseType && responseType !== 'json') {\n request.responseType = config.responseType;\n }\n\n // Handle progress if needed\n if (typeof config.onDownloadProgress === 'function') {\n request.addEventListener('progress', progressEventReducer(config.onDownloadProgress, true));\n }\n\n // Not all browsers support upload events\n if (typeof config.onUploadProgress === 'function' && request.upload) {\n request.upload.addEventListener('progress', progressEventReducer(config.onUploadProgress));\n }\n\n if (config.cancelToken || config.signal) {\n // Handle cancellation\n // eslint-disable-next-line func-names\n onCanceled = cancel => {\n if (!request) {\n return;\n }\n reject(!cancel || cancel.type ? new CanceledError(null, config, request) : cancel);\n request.abort();\n request = null;\n };\n\n config.cancelToken && config.cancelToken.subscribe(onCanceled);\n if (config.signal) {\n config.signal.aborted ? onCanceled() : config.signal.addEventListener('abort', onCanceled);\n }\n }\n\n const protocol = parseProtocol(fullPath);\n\n if (protocol && platform.protocols.indexOf(protocol) === -1) {\n reject(new AxiosError('Unsupported protocol ' + protocol + ':', AxiosError.ERR_BAD_REQUEST, config));\n return;\n }\n\n\n // Send the request\n request.send(requestData || null);\n });\n}\n","'use strict';\n\nimport AxiosError from './AxiosError.js';\n\n/**\n * Resolve or reject a Promise based on response status.\n *\n * @param {Function} resolve A function that resolves the promise.\n * @param {Function} reject A function that rejects the promise.\n * @param {object} response The response.\n *\n * @returns {object} The response.\n */\nexport default function settle(resolve, reject, response) {\n const validateStatus = response.config.validateStatus;\n if (!response.status || !validateStatus || validateStatus(response.status)) {\n resolve(response);\n } else {\n reject(new AxiosError(\n 'Request failed with status code ' + response.status,\n [AxiosError.ERR_BAD_REQUEST, AxiosError.ERR_BAD_RESPONSE][Math.floor(response.status / 100) - 4],\n response.config,\n response.request,\n response\n ));\n }\n}\n","'use strict';\n\nexport default function parseProtocol(url) {\n const match = /^([-+\\w]{1,25})(:?\\/\\/|:)/.exec(url);\n return match && match[1] || '';\n}\n","import utils from '../utils.js';\nimport httpAdapter from './http.js';\nimport xhrAdapter from './xhr.js';\nimport AxiosError from \"../core/AxiosError.js\";\n\nconst knownAdapters = {\n http: httpAdapter,\n xhr: xhrAdapter\n}\n\nutils.forEach(knownAdapters, (fn, value) => {\n if (fn) {\n try {\n Object.defineProperty(fn, 'name', {value});\n } catch (e) {\n // eslint-disable-next-line no-empty\n }\n Object.defineProperty(fn, 'adapterName', {value});\n }\n});\n\nconst renderReason = (reason) => `- ${reason}`;\n\nconst isResolvedHandle = (adapter) => utils.isFunction(adapter) || adapter === null || adapter === false;\n\nexport default {\n getAdapter: (adapters) => {\n adapters = utils.isArray(adapters) ? adapters : [adapters];\n\n const {length} = adapters;\n let nameOrAdapter;\n let adapter;\n\n const rejectedReasons = {};\n\n for (let i = 0; i < length; i++) {\n nameOrAdapter = adapters[i];\n let id;\n\n adapter = nameOrAdapter;\n\n if (!isResolvedHandle(nameOrAdapter)) {\n adapter = knownAdapters[(id = String(nameOrAdapter)).toLowerCase()];\n\n if (adapter === undefined) {\n throw new AxiosError(`Unknown adapter '${id}'`);\n }\n }\n\n if (adapter) {\n break;\n }\n\n rejectedReasons[id || '#' + i] = adapter;\n }\n\n if (!adapter) {\n\n const reasons = Object.entries(rejectedReasons)\n .map(([id, state]) => `adapter ${id} ` +\n (state === false ? 'is not supported by the environment' : 'is not available in the build')\n );\n\n let s = length ?\n (reasons.length > 1 ? 'since :\\n' + reasons.map(renderReason).join('\\n') : ' ' + renderReason(reasons[0])) :\n 'as no adapter specified';\n\n throw new AxiosError(\n `There is no suitable adapter to dispatch the request ` + s,\n 'ERR_NOT_SUPPORT'\n );\n }\n\n return adapter;\n },\n adapters: knownAdapters\n}\n","// eslint-disable-next-line strict\nexport default null;\n","'use strict';\n\nimport transformData from './transformData.js';\nimport isCancel from '../cancel/isCancel.js';\nimport defaults from '../defaults/index.js';\nimport CanceledError from '../cancel/CanceledError.js';\nimport AxiosHeaders from '../core/AxiosHeaders.js';\nimport adapters from \"../adapters/adapters.js\";\n\n/**\n * Throws a `CanceledError` if cancellation has been requested.\n *\n * @param {Object} config The config that is to be used for the request\n *\n * @returns {void}\n */\nfunction throwIfCancellationRequested(config) {\n if (config.cancelToken) {\n config.cancelToken.throwIfRequested();\n }\n\n if (config.signal && config.signal.aborted) {\n throw new CanceledError(null, config);\n }\n}\n\n/**\n * Dispatch a request to the server using the configured adapter.\n *\n * @param {object} config The config that is to be used for the request\n *\n * @returns {Promise} The Promise to be fulfilled\n */\nexport default function dispatchRequest(config) {\n throwIfCancellationRequested(config);\n\n config.headers = AxiosHeaders.from(config.headers);\n\n // Transform request data\n config.data = transformData.call(\n config,\n config.transformRequest\n );\n\n if (['post', 'put', 'patch'].indexOf(config.method) !== -1) {\n config.headers.setContentType('application/x-www-form-urlencoded', false);\n }\n\n const adapter = adapters.getAdapter(config.adapter || defaults.adapter);\n\n return adapter(config).then(function onAdapterResolution(response) {\n throwIfCancellationRequested(config);\n\n // Transform response data\n response.data = transformData.call(\n config,\n config.transformResponse,\n response\n );\n\n response.headers = AxiosHeaders.from(response.headers);\n\n return response;\n }, function onAdapterRejection(reason) {\n if (!isCancel(reason)) {\n throwIfCancellationRequested(config);\n\n // Transform response data\n if (reason && reason.response) {\n reason.response.data = transformData.call(\n config,\n config.transformResponse,\n reason.response\n );\n reason.response.headers = AxiosHeaders.from(reason.response.headers);\n }\n }\n\n return Promise.reject(reason);\n });\n}\n","'use strict';\n\nimport utils from '../utils.js';\nimport AxiosHeaders from \"./AxiosHeaders.js\";\n\nconst headersToObject = (thing) => thing instanceof AxiosHeaders ? thing.toJSON() : thing;\n\n/**\n * Config-specific merge-function which creates a new config-object\n * by merging two configuration objects together.\n *\n * @param {Object} config1\n * @param {Object} config2\n *\n * @returns {Object} New object resulting from merging config2 to config1\n */\nexport default function mergeConfig(config1, config2) {\n // eslint-disable-next-line no-param-reassign\n config2 = config2 || {};\n const config = {};\n\n function getMergedValue(target, source, caseless) {\n if (utils.isPlainObject(target) && utils.isPlainObject(source)) {\n return utils.merge.call({caseless}, target, source);\n } else if (utils.isPlainObject(source)) {\n return utils.merge({}, source);\n } else if (utils.isArray(source)) {\n return source.slice();\n }\n return source;\n }\n\n // eslint-disable-next-line consistent-return\n function mergeDeepProperties(a, b, caseless) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(a, b, caseless);\n } else if (!utils.isUndefined(a)) {\n return getMergedValue(undefined, a, caseless);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function valueFromConfig2(a, b) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(undefined, b);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function defaultToConfig2(a, b) {\n if (!utils.isUndefined(b)) {\n return getMergedValue(undefined, b);\n } else if (!utils.isUndefined(a)) {\n return getMergedValue(undefined, a);\n }\n }\n\n // eslint-disable-next-line consistent-return\n function mergeDirectKeys(a, b, prop) {\n if (prop in config2) {\n return getMergedValue(a, b);\n } else if (prop in config1) {\n return getMergedValue(undefined, a);\n }\n }\n\n const mergeMap = {\n url: valueFromConfig2,\n method: valueFromConfig2,\n data: valueFromConfig2,\n baseURL: defaultToConfig2,\n transformRequest: defaultToConfig2,\n transformResponse: defaultToConfig2,\n paramsSerializer: defaultToConfig2,\n timeout: defaultToConfig2,\n timeoutMessage: defaultToConfig2,\n withCredentials: defaultToConfig2,\n withXSRFToken: defaultToConfig2,\n adapter: defaultToConfig2,\n responseType: defaultToConfig2,\n xsrfCookieName: defaultToConfig2,\n xsrfHeaderName: defaultToConfig2,\n onUploadProgress: defaultToConfig2,\n onDownloadProgress: defaultToConfig2,\n decompress: defaultToConfig2,\n maxContentLength: defaultToConfig2,\n maxBodyLength: defaultToConfig2,\n beforeRedirect: defaultToConfig2,\n transport: defaultToConfig2,\n httpAgent: defaultToConfig2,\n httpsAgent: defaultToConfig2,\n cancelToken: defaultToConfig2,\n socketPath: defaultToConfig2,\n responseEncoding: defaultToConfig2,\n validateStatus: mergeDirectKeys,\n headers: (a, b) => mergeDeepProperties(headersToObject(a), headersToObject(b), true)\n };\n\n utils.forEach(Object.keys(Object.assign({}, config1, config2)), function computeConfigValue(prop) {\n const merge = mergeMap[prop] || mergeDeepProperties;\n const configValue = merge(config1[prop], config2[prop], prop);\n (utils.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue);\n });\n\n return config;\n}\n","export const VERSION = \"1.6.2\";","'use strict';\n\nimport {VERSION} from '../env/data.js';\nimport AxiosError from '../core/AxiosError.js';\n\nconst validators = {};\n\n// eslint-disable-next-line func-names\n['object', 'boolean', 'number', 'function', 'string', 'symbol'].forEach((type, i) => {\n validators[type] = function validator(thing) {\n return typeof thing === type || 'a' + (i < 1 ? 'n ' : ' ') + type;\n };\n});\n\nconst deprecatedWarnings = {};\n\n/**\n * Transitional option validator\n *\n * @param {function|boolean?} validator - set to false if the transitional option has been removed\n * @param {string?} version - deprecated version / removed since version\n * @param {string?} message - some message with additional info\n *\n * @returns {function}\n */\nvalidators.transitional = function transitional(validator, version, message) {\n function formatMessage(opt, desc) {\n return '[Axios v' + VERSION + '] Transitional option \\'' + opt + '\\'' + desc + (message ? '. ' + message : '');\n }\n\n // eslint-disable-next-line func-names\n return (value, opt, opts) => {\n if (validator === false) {\n throw new AxiosError(\n formatMessage(opt, ' has been removed' + (version ? ' in ' + version : '')),\n AxiosError.ERR_DEPRECATED\n );\n }\n\n if (version && !deprecatedWarnings[opt]) {\n deprecatedWarnings[opt] = true;\n // eslint-disable-next-line no-console\n console.warn(\n formatMessage(\n opt,\n ' has been deprecated since v' + version + ' and will be removed in the near future'\n )\n );\n }\n\n return validator ? validator(value, opt, opts) : true;\n };\n};\n\n/**\n * Assert object's properties type\n *\n * @param {object} options\n * @param {object} schema\n * @param {boolean?} allowUnknown\n *\n * @returns {object}\n */\n\nfunction assertOptions(options, schema, allowUnknown) {\n if (typeof options !== 'object') {\n throw new AxiosError('options must be an object', AxiosError.ERR_BAD_OPTION_VALUE);\n }\n const keys = Object.keys(options);\n let i = keys.length;\n while (i-- > 0) {\n const opt = keys[i];\n const validator = schema[opt];\n if (validator) {\n const value = options[opt];\n const result = value === undefined || validator(value, opt, options);\n if (result !== true) {\n throw new AxiosError('option ' + opt + ' must be ' + result, AxiosError.ERR_BAD_OPTION_VALUE);\n }\n continue;\n }\n if (allowUnknown !== true) {\n throw new AxiosError('Unknown option ' + opt, AxiosError.ERR_BAD_OPTION);\n }\n }\n}\n\nexport default {\n assertOptions,\n validators\n};\n","'use strict';\n\nimport utils from './../utils.js';\nimport buildURL from '../helpers/buildURL.js';\nimport InterceptorManager from './InterceptorManager.js';\nimport dispatchRequest from './dispatchRequest.js';\nimport mergeConfig from './mergeConfig.js';\nimport buildFullPath from './buildFullPath.js';\nimport validator from '../helpers/validator.js';\nimport AxiosHeaders from './AxiosHeaders.js';\n\nconst validators = validator.validators;\n\n/**\n * Create a new instance of Axios\n *\n * @param {Object} instanceConfig The default config for the instance\n *\n * @return {Axios} A new instance of Axios\n */\nclass Axios {\n constructor(instanceConfig) {\n this.defaults = instanceConfig;\n this.interceptors = {\n request: new InterceptorManager(),\n response: new InterceptorManager()\n };\n }\n\n /**\n * Dispatch a request\n *\n * @param {String|Object} configOrUrl The config specific for this request (merged with this.defaults)\n * @param {?Object} config\n *\n * @returns {Promise} The Promise to be fulfilled\n */\n request(configOrUrl, config) {\n /*eslint no-param-reassign:0*/\n // Allow for axios('example/url'[, config]) a la fetch API\n if (typeof configOrUrl === 'string') {\n config = config || {};\n config.url = configOrUrl;\n } else {\n config = configOrUrl || {};\n }\n\n config = mergeConfig(this.defaults, config);\n\n const {transitional, paramsSerializer, headers} = config;\n\n if (transitional !== undefined) {\n validator.assertOptions(transitional, {\n silentJSONParsing: validators.transitional(validators.boolean),\n forcedJSONParsing: validators.transitional(validators.boolean),\n clarifyTimeoutError: validators.transitional(validators.boolean)\n }, false);\n }\n\n if (paramsSerializer != null) {\n if (utils.isFunction(paramsSerializer)) {\n config.paramsSerializer = {\n serialize: paramsSerializer\n }\n } else {\n validator.assertOptions(paramsSerializer, {\n encode: validators.function,\n serialize: validators.function\n }, true);\n }\n }\n\n // Set config.method\n config.method = (config.method || this.defaults.method || 'get').toLowerCase();\n\n // Flatten headers\n let contextHeaders = headers && utils.merge(\n headers.common,\n headers[config.method]\n );\n\n headers && utils.forEach(\n ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'],\n (method) => {\n delete headers[method];\n }\n );\n\n config.headers = AxiosHeaders.concat(contextHeaders, headers);\n\n // filter out skipped interceptors\n const requestInterceptorChain = [];\n let synchronousRequestInterceptors = true;\n this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) {\n if (typeof interceptor.runWhen === 'function' && interceptor.runWhen(config) === false) {\n return;\n }\n\n synchronousRequestInterceptors = synchronousRequestInterceptors && interceptor.synchronous;\n\n requestInterceptorChain.unshift(interceptor.fulfilled, interceptor.rejected);\n });\n\n const responseInterceptorChain = [];\n this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) {\n responseInterceptorChain.push(interceptor.fulfilled, interceptor.rejected);\n });\n\n let promise;\n let i = 0;\n let len;\n\n if (!synchronousRequestInterceptors) {\n const chain = [dispatchRequest.bind(this), undefined];\n chain.unshift.apply(chain, requestInterceptorChain);\n chain.push.apply(chain, responseInterceptorChain);\n len = chain.length;\n\n promise = Promise.resolve(config);\n\n while (i < len) {\n promise = promise.then(chain[i++], chain[i++]);\n }\n\n return promise;\n }\n\n len = requestInterceptorChain.length;\n\n let newConfig = config;\n\n i = 0;\n\n while (i < len) {\n const onFulfilled = requestInterceptorChain[i++];\n const onRejected = requestInterceptorChain[i++];\n try {\n newConfig = onFulfilled(newConfig);\n } catch (error) {\n onRejected.call(this, error);\n break;\n }\n }\n\n try {\n promise = dispatchRequest.call(this, newConfig);\n } catch (error) {\n return Promise.reject(error);\n }\n\n i = 0;\n len = responseInterceptorChain.length;\n\n while (i < len) {\n promise = promise.then(responseInterceptorChain[i++], responseInterceptorChain[i++]);\n }\n\n return promise;\n }\n\n getUri(config) {\n config = mergeConfig(this.defaults, config);\n const fullPath = buildFullPath(config.baseURL, config.url);\n return buildURL(fullPath, config.params, config.paramsSerializer);\n }\n}\n\n// Provide aliases for supported request methods\nutils.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) {\n /*eslint func-names:0*/\n Axios.prototype[method] = function(url, config) {\n return this.request(mergeConfig(config || {}, {\n method,\n url,\n data: (config || {}).data\n }));\n };\n});\n\nutils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) {\n /*eslint func-names:0*/\n\n function generateHTTPMethod(isForm) {\n return function httpMethod(url, data, config) {\n return this.request(mergeConfig(config || {}, {\n method,\n headers: isForm ? {\n 'Content-Type': 'multipart/form-data'\n } : {},\n url,\n data\n }));\n };\n }\n\n Axios.prototype[method] = generateHTTPMethod();\n\n Axios.prototype[method + 'Form'] = generateHTTPMethod(true);\n});\n\nexport default Axios;\n","'use strict';\n\nimport CanceledError from './CanceledError.js';\n\n/**\n * A `CancelToken` is an object that can be used to request cancellation of an operation.\n *\n * @param {Function} executor The executor function.\n *\n * @returns {CancelToken}\n */\nclass CancelToken {\n constructor(executor) {\n if (typeof executor !== 'function') {\n throw new TypeError('executor must be a function.');\n }\n\n let resolvePromise;\n\n this.promise = new Promise(function promiseExecutor(resolve) {\n resolvePromise = resolve;\n });\n\n const token = this;\n\n // eslint-disable-next-line func-names\n this.promise.then(cancel => {\n if (!token._listeners) return;\n\n let i = token._listeners.length;\n\n while (i-- > 0) {\n token._listeners[i](cancel);\n }\n token._listeners = null;\n });\n\n // eslint-disable-next-line func-names\n this.promise.then = onfulfilled => {\n let _resolve;\n // eslint-disable-next-line func-names\n const promise = new Promise(resolve => {\n token.subscribe(resolve);\n _resolve = resolve;\n }).then(onfulfilled);\n\n promise.cancel = function reject() {\n token.unsubscribe(_resolve);\n };\n\n return promise;\n };\n\n executor(function cancel(message, config, request) {\n if (token.reason) {\n // Cancellation has already been requested\n return;\n }\n\n token.reason = new CanceledError(message, config, request);\n resolvePromise(token.reason);\n });\n }\n\n /**\n * Throws a `CanceledError` if cancellation has been requested.\n */\n throwIfRequested() {\n if (this.reason) {\n throw this.reason;\n }\n }\n\n /**\n * Subscribe to the cancel signal\n */\n\n subscribe(listener) {\n if (this.reason) {\n listener(this.reason);\n return;\n }\n\n if (this._listeners) {\n this._listeners.push(listener);\n } else {\n this._listeners = [listener];\n }\n }\n\n /**\n * Unsubscribe from the cancel signal\n */\n\n unsubscribe(listener) {\n if (!this._listeners) {\n return;\n }\n const index = this._listeners.indexOf(listener);\n if (index !== -1) {\n this._listeners.splice(index, 1);\n }\n }\n\n /**\n * Returns an object that contains a new `CancelToken` and a function that, when called,\n * cancels the `CancelToken`.\n */\n static source() {\n let cancel;\n const token = new CancelToken(function executor(c) {\n cancel = c;\n });\n return {\n token,\n cancel\n };\n }\n}\n\nexport default CancelToken;\n","const HttpStatusCode = {\n Continue: 100,\n SwitchingProtocols: 101,\n Processing: 102,\n EarlyHints: 103,\n Ok: 200,\n Created: 201,\n Accepted: 202,\n NonAuthoritativeInformation: 203,\n NoContent: 204,\n ResetContent: 205,\n PartialContent: 206,\n MultiStatus: 207,\n AlreadyReported: 208,\n ImUsed: 226,\n MultipleChoices: 300,\n MovedPermanently: 301,\n Found: 302,\n SeeOther: 303,\n NotModified: 304,\n UseProxy: 305,\n Unused: 306,\n TemporaryRedirect: 307,\n PermanentRedirect: 308,\n BadRequest: 400,\n Unauthorized: 401,\n PaymentRequired: 402,\n Forbidden: 403,\n NotFound: 404,\n MethodNotAllowed: 405,\n NotAcceptable: 406,\n ProxyAuthenticationRequired: 407,\n RequestTimeout: 408,\n Conflict: 409,\n Gone: 410,\n LengthRequired: 411,\n PreconditionFailed: 412,\n PayloadTooLarge: 413,\n UriTooLong: 414,\n UnsupportedMediaType: 415,\n RangeNotSatisfiable: 416,\n ExpectationFailed: 417,\n ImATeapot: 418,\n MisdirectedRequest: 421,\n UnprocessableEntity: 422,\n Locked: 423,\n FailedDependency: 424,\n TooEarly: 425,\n UpgradeRequired: 426,\n PreconditionRequired: 428,\n TooManyRequests: 429,\n RequestHeaderFieldsTooLarge: 431,\n UnavailableForLegalReasons: 451,\n InternalServerError: 500,\n NotImplemented: 501,\n BadGateway: 502,\n ServiceUnavailable: 503,\n GatewayTimeout: 504,\n HttpVersionNotSupported: 505,\n VariantAlsoNegotiates: 506,\n InsufficientStorage: 507,\n LoopDetected: 508,\n NotExtended: 510,\n NetworkAuthenticationRequired: 511,\n};\n\nObject.entries(HttpStatusCode).forEach(([key, value]) => {\n HttpStatusCode[value] = key;\n});\n\nexport default HttpStatusCode;\n","'use strict';\n\nimport utils from './utils.js';\nimport bind from './helpers/bind.js';\nimport Axios from './core/Axios.js';\nimport mergeConfig from './core/mergeConfig.js';\nimport defaults from './defaults/index.js';\nimport formDataToJSON from './helpers/formDataToJSON.js';\nimport CanceledError from './cancel/CanceledError.js';\nimport CancelToken from './cancel/CancelToken.js';\nimport isCancel from './cancel/isCancel.js';\nimport {VERSION} from './env/data.js';\nimport toFormData from './helpers/toFormData.js';\nimport AxiosError from './core/AxiosError.js';\nimport spread from './helpers/spread.js';\nimport isAxiosError from './helpers/isAxiosError.js';\nimport AxiosHeaders from \"./core/AxiosHeaders.js\";\nimport adapters from './adapters/adapters.js';\nimport HttpStatusCode from './helpers/HttpStatusCode.js';\n\n/**\n * Create an instance of Axios\n *\n * @param {Object} defaultConfig The default config for the instance\n *\n * @returns {Axios} A new instance of Axios\n */\nfunction createInstance(defaultConfig) {\n const context = new Axios(defaultConfig);\n const instance = bind(Axios.prototype.request, context);\n\n // Copy axios.prototype to instance\n utils.extend(instance, Axios.prototype, context, {allOwnKeys: true});\n\n // Copy context to instance\n utils.extend(instance, context, null, {allOwnKeys: true});\n\n // Factory for creating new instances\n instance.create = function create(instanceConfig) {\n return createInstance(mergeConfig(defaultConfig, instanceConfig));\n };\n\n return instance;\n}\n\n// Create the default instance to be exported\nconst axios = createInstance(defaults);\n\n// Expose Axios class to allow class inheritance\naxios.Axios = Axios;\n\n// Expose Cancel & CancelToken\naxios.CanceledError = CanceledError;\naxios.CancelToken = CancelToken;\naxios.isCancel = isCancel;\naxios.VERSION = VERSION;\naxios.toFormData = toFormData;\n\n// Expose AxiosError class\naxios.AxiosError = AxiosError;\n\n// alias for CanceledError for backward compatibility\naxios.Cancel = axios.CanceledError;\n\n// Expose all/spread\naxios.all = function all(promises) {\n return Promise.all(promises);\n};\n\naxios.spread = spread;\n\n// Expose isAxiosError\naxios.isAxiosError = isAxiosError;\n\n// Expose mergeConfig\naxios.mergeConfig = mergeConfig;\n\naxios.AxiosHeaders = AxiosHeaders;\n\naxios.formToJSON = thing => formDataToJSON(utils.isHTMLForm(thing) ? new FormData(thing) : thing);\n\naxios.getAdapter = adapters.getAdapter;\n\naxios.HttpStatusCode = HttpStatusCode;\n\naxios.default = axios;\n\n// this module should only have a default export\nexport default axios\n","'use strict';\n\n/**\n * Syntactic sugar for invoking a function and expanding an array for arguments.\n *\n * Common use case would be to use `Function.prototype.apply`.\n *\n * ```js\n * function f(x, y, z) {}\n * var args = [1, 2, 3];\n * f.apply(null, args);\n * ```\n *\n * With `spread` this example can be re-written.\n *\n * ```js\n * spread(function(x, y, z) {})([1, 2, 3]);\n * ```\n *\n * @param {Function} callback\n *\n * @returns {Function}\n */\nexport default function spread(callback) {\n return function wrap(arr) {\n return callback.apply(null, arr);\n };\n}\n","'use strict';\n\nimport utils from './../utils.js';\n\n/**\n * Determines whether the payload is an error thrown by Axios\n *\n * @param {*} payload The value to test\n *\n * @returns {boolean} True if the payload is an error thrown by Axios, otherwise false\n */\nexport default function isAxiosError(payload) {\n return utils.isObject(payload) && (payload.isAxiosError === true);\n}\n","export const configuration = {\n LOGMEAL_API_KEY: 'c3c716518724e81a03121af3fb7515bf38d7dd61',\n LOGMEAL_API_URL: 'https://api.logmeal.es',\n LOGMEAL_API_DISHPATH: '/v2/image/segmentation/complete/v1.0?language=eng',\n LOGMEAL_API_NUTRIPATH: '/v2/nutrition/recipe/ingredients/v1.0?language=eng'\n};\nexport const firebaseConfig = {\n apiKey: \"AIzaSyC5VRVEUixqEFA36lVbJg_RzXxCkhhX3Mo\",\n authDomain: \"allergen-ai.firebaseapp.com\",\n databaseURL: \"https://allergen-ai-default-rtdb.firebaseio.com\",\n projectId: \"allergen-ai\",\n storageBucket: \"allergen-ai.appspot.com\",\n messagingSenderId: \"474219194547\",\n appId: \"1:474219194547:web:10457c9023217fb483e8c6\",\n measurementId: \"G-XEENQ89M25\"\n}\n","// logMealService.js\nimport axios from \"axios\";\nimport { configuration } from \"../config\";\nimport {filetoDataURL, urltoBlob, compressAccurately} from \"image-conversion\";\n\n\nconst convertAndCompressImage = async (file, targetSizeInMB) => {\n console.log(file);\n const isJpeg = file.type === 'image/jpeg';\n\n // Check if the file is already a JPEG and within the size limit\n if (isJpeg && file.size / (1024 * 1024) <= targetSizeInMB) {\n console.log(\"It's a JPEG and it's within the size limit.\");\n return file;\n }\n\n // If it's a JPEG but too big, compress it\n if (isJpeg) {\n console.log(\"It's a JPEG but too big. Compressing...\");\n const compressedBlob = await compressAccurately(file,targetSizeInMB*900);\n console.log(compressedBlob);\n // const compressedDataUrl = imageConversion.compress(file, { quality: 0.8 });\n // const compressedBlob = imageConversion.dataUrlToBlob(compressedDataUrl);\n return new File([compressedBlob], file.name, { type: 'image/jpeg' });\n }\n\n // Convert to JPEG and compress\n console.log(\"It's not a JPEG. Converting and compressing...\");\n\n const dataUrl = filetoDataURL(file);\n const blob = urltoBlob(dataUrl);\n const compressedBlob = compressAccurately(blob, targetSizeInMB*900);\n return new File([compressedBlob], file.name, { type: 'image/jpeg' });\n};\n\nexport const detectFood = async (file) => {\n try {\n const compressedFile = await convertAndCompressImage(file, 1); // Set your target size in MB\n\n const formData = new FormData();\n formData.append(\"image\", compressedFile);\n\n const dishResponse = await axios.post(\n configuration.LOGMEAL_API_URL + configuration.LOGMEAL_API_DISHPATH,\n formData,\n {\n headers: {\n \"Content-Type\": \"multipart/form-data\",\n Authorization: \"Bearer \" + configuration.LOGMEAL_API_KEY,\n },\n }\n );\n\n const { imageId } = dishResponse.data;\n const recipeNutriParams = {\n imageId: imageId,\n };\n\n const nutriResponse = await axios.post(\n configuration.LOGMEAL_API_URL + configuration.LOGMEAL_API_NUTRIPATH,\n recipeNutriParams,\n {\n headers: {\n \"Content-Type\": \"application/json\",\n Authorization: \"Bearer \" + configuration.LOGMEAL_API_KEY,\n },\n }\n );\n const { recipe } = nutriResponse.data;\n const ingredients = recipe.map((item) => item.name);\n\n return {\n foodName:\n dishResponse.data.foodFamily[0][\"name\"] +\n \" \" +\n nutriResponse.data.foodName,\n probability: dishResponse.data.foodFamily[0][\"prob\"],\n nutriInfo: ingredients,\n };\n } catch (error) {\n throw new Error(\"Error detecting food:\", error);\n }\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Firebase constants. Some of these (@defines) can be overridden at compile-time.\n */\n\nexport const CONSTANTS = {\n /**\n * @define {boolean} Whether this is the client Node.js SDK.\n */\n NODE_CLIENT: false,\n /**\n * @define {boolean} Whether this is the Admin Node.js SDK.\n */\n NODE_ADMIN: false,\n\n /**\n * Firebase SDK Version\n */\n SDK_VERSION: '${JSCORE_VERSION}'\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { CONSTANTS } from './constants';\n\n/**\n * Throws an error if the provided assertion is falsy\n */\nexport const assert = function (assertion: unknown, message: string): void {\n if (!assertion) {\n throw assertionError(message);\n }\n};\n\n/**\n * Returns an Error object suitable for throwing.\n */\nexport const assertionError = function (message: string): Error {\n return new Error(\n 'Firebase Database (' +\n CONSTANTS.SDK_VERSION +\n ') INTERNAL ASSERT FAILED: ' +\n message\n );\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nconst stringToByteArray = function (str: string): number[] {\n // TODO(user): Use native implementations if/when available\n const out: number[] = [];\n let p = 0;\n for (let i = 0; i < str.length; i++) {\n let c = str.charCodeAt(i);\n if (c < 128) {\n out[p++] = c;\n } else if (c < 2048) {\n out[p++] = (c >> 6) | 192;\n out[p++] = (c & 63) | 128;\n } else if (\n (c & 0xfc00) === 0xd800 &&\n i + 1 < str.length &&\n (str.charCodeAt(i + 1) & 0xfc00) === 0xdc00\n ) {\n // Surrogate Pair\n c = 0x10000 + ((c & 0x03ff) << 10) + (str.charCodeAt(++i) & 0x03ff);\n out[p++] = (c >> 18) | 240;\n out[p++] = ((c >> 12) & 63) | 128;\n out[p++] = ((c >> 6) & 63) | 128;\n out[p++] = (c & 63) | 128;\n } else {\n out[p++] = (c >> 12) | 224;\n out[p++] = ((c >> 6) & 63) | 128;\n out[p++] = (c & 63) | 128;\n }\n }\n return out;\n};\n\n/**\n * Turns an array of numbers into the string given by the concatenation of the\n * characters to which the numbers correspond.\n * @param bytes Array of numbers representing characters.\n * @return Stringification of the array.\n */\nconst byteArrayToString = function (bytes: number[]): string {\n // TODO(user): Use native implementations if/when available\n const out: string[] = [];\n let pos = 0,\n c = 0;\n while (pos < bytes.length) {\n const c1 = bytes[pos++];\n if (c1 < 128) {\n out[c++] = String.fromCharCode(c1);\n } else if (c1 > 191 && c1 < 224) {\n const c2 = bytes[pos++];\n out[c++] = String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));\n } else if (c1 > 239 && c1 < 365) {\n // Surrogate Pair\n const c2 = bytes[pos++];\n const c3 = bytes[pos++];\n const c4 = bytes[pos++];\n const u =\n (((c1 & 7) << 18) | ((c2 & 63) << 12) | ((c3 & 63) << 6) | (c4 & 63)) -\n 0x10000;\n out[c++] = String.fromCharCode(0xd800 + (u >> 10));\n out[c++] = String.fromCharCode(0xdc00 + (u & 1023));\n } else {\n const c2 = bytes[pos++];\n const c3 = bytes[pos++];\n out[c++] = String.fromCharCode(\n ((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63)\n );\n }\n }\n return out.join('');\n};\n\ninterface Base64 {\n byteToCharMap_: { [key: number]: string } | null;\n charToByteMap_: { [key: string]: number } | null;\n byteToCharMapWebSafe_: { [key: number]: string } | null;\n charToByteMapWebSafe_: { [key: string]: number } | null;\n ENCODED_VALS_BASE: string;\n readonly ENCODED_VALS: string;\n readonly ENCODED_VALS_WEBSAFE: string;\n HAS_NATIVE_SUPPORT: boolean;\n encodeByteArray(input: number[] | Uint8Array, webSafe?: boolean): string;\n encodeString(input: string, webSafe?: boolean): string;\n decodeString(input: string, webSafe: boolean): string;\n decodeStringToByteArray(input: string, webSafe: boolean): number[];\n init_(): void;\n}\n\n// We define it as an object literal instead of a class because a class compiled down to es5 can't\n// be treeshaked. https://github.com/rollup/rollup/issues/1691\n// Static lookup maps, lazily populated by init_()\nexport const base64: Base64 = {\n /**\n * Maps bytes to characters.\n */\n byteToCharMap_: null,\n\n /**\n * Maps characters to bytes.\n */\n charToByteMap_: null,\n\n /**\n * Maps bytes to websafe characters.\n * @private\n */\n byteToCharMapWebSafe_: null,\n\n /**\n * Maps websafe characters to bytes.\n * @private\n */\n charToByteMapWebSafe_: null,\n\n /**\n * Our default alphabet, shared between\n * ENCODED_VALS and ENCODED_VALS_WEBSAFE\n */\n ENCODED_VALS_BASE:\n 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' + 'abcdefghijklmnopqrstuvwxyz' + '0123456789',\n\n /**\n * Our default alphabet. Value 64 (=) is special; it means \"nothing.\"\n */\n get ENCODED_VALS() {\n return this.ENCODED_VALS_BASE + '+/=';\n },\n\n /**\n * Our websafe alphabet.\n */\n get ENCODED_VALS_WEBSAFE() {\n return this.ENCODED_VALS_BASE + '-_.';\n },\n\n /**\n * Whether this browser supports the atob and btoa functions. This extension\n * started at Mozilla but is now implemented by many browsers. We use the\n * ASSUME_* variables to avoid pulling in the full useragent detection library\n * but still allowing the standard per-browser compilations.\n *\n */\n HAS_NATIVE_SUPPORT: typeof atob === 'function',\n\n /**\n * Base64-encode an array of bytes.\n *\n * @param input An array of bytes (numbers with\n * value in [0, 255]) to encode.\n * @param webSafe Boolean indicating we should use the\n * alternative alphabet.\n * @return The base64 encoded string.\n */\n encodeByteArray(input: number[] | Uint8Array, webSafe?: boolean): string {\n if (!Array.isArray(input)) {\n throw Error('encodeByteArray takes an array as a parameter');\n }\n\n this.init_();\n\n const byteToCharMap = webSafe\n ? this.byteToCharMapWebSafe_!\n : this.byteToCharMap_!;\n\n const output = [];\n\n for (let i = 0; i < input.length; i += 3) {\n const byte1 = input[i];\n const haveByte2 = i + 1 < input.length;\n const byte2 = haveByte2 ? input[i + 1] : 0;\n const haveByte3 = i + 2 < input.length;\n const byte3 = haveByte3 ? input[i + 2] : 0;\n\n const outByte1 = byte1 >> 2;\n const outByte2 = ((byte1 & 0x03) << 4) | (byte2 >> 4);\n let outByte3 = ((byte2 & 0x0f) << 2) | (byte3 >> 6);\n let outByte4 = byte3 & 0x3f;\n\n if (!haveByte3) {\n outByte4 = 64;\n\n if (!haveByte2) {\n outByte3 = 64;\n }\n }\n\n output.push(\n byteToCharMap[outByte1],\n byteToCharMap[outByte2],\n byteToCharMap[outByte3],\n byteToCharMap[outByte4]\n );\n }\n\n return output.join('');\n },\n\n /**\n * Base64-encode a string.\n *\n * @param input A string to encode.\n * @param webSafe If true, we should use the\n * alternative alphabet.\n * @return The base64 encoded string.\n */\n encodeString(input: string, webSafe?: boolean): string {\n // Shortcut for Mozilla browsers that implement\n // a native base64 encoder in the form of \"btoa/atob\"\n if (this.HAS_NATIVE_SUPPORT && !webSafe) {\n return btoa(input);\n }\n return this.encodeByteArray(stringToByteArray(input), webSafe);\n },\n\n /**\n * Base64-decode a string.\n *\n * @param input to decode.\n * @param webSafe True if we should use the\n * alternative alphabet.\n * @return string representing the decoded value.\n */\n decodeString(input: string, webSafe: boolean): string {\n // Shortcut for Mozilla browsers that implement\n // a native base64 encoder in the form of \"btoa/atob\"\n if (this.HAS_NATIVE_SUPPORT && !webSafe) {\n return atob(input);\n }\n return byteArrayToString(this.decodeStringToByteArray(input, webSafe));\n },\n\n /**\n * Base64-decode a string.\n *\n * In base-64 decoding, groups of four characters are converted into three\n * bytes. If the encoder did not apply padding, the input length may not\n * be a multiple of 4.\n *\n * In this case, the last group will have fewer than 4 characters, and\n * padding will be inferred. If the group has one or two characters, it decodes\n * to one byte. If the group has three characters, it decodes to two bytes.\n *\n * @param input Input to decode.\n * @param webSafe True if we should use the web-safe alphabet.\n * @return bytes representing the decoded value.\n */\n decodeStringToByteArray(input: string, webSafe: boolean): number[] {\n this.init_();\n\n const charToByteMap = webSafe\n ? this.charToByteMapWebSafe_!\n : this.charToByteMap_!;\n\n const output: number[] = [];\n\n for (let i = 0; i < input.length; ) {\n const byte1 = charToByteMap[input.charAt(i++)];\n\n const haveByte2 = i < input.length;\n const byte2 = haveByte2 ? charToByteMap[input.charAt(i)] : 0;\n ++i;\n\n const haveByte3 = i < input.length;\n const byte3 = haveByte3 ? charToByteMap[input.charAt(i)] : 64;\n ++i;\n\n const haveByte4 = i < input.length;\n const byte4 = haveByte4 ? charToByteMap[input.charAt(i)] : 64;\n ++i;\n\n if (byte1 == null || byte2 == null || byte3 == null || byte4 == null) {\n throw new DecodeBase64StringError();\n }\n\n const outByte1 = (byte1 << 2) | (byte2 >> 4);\n output.push(outByte1);\n\n if (byte3 !== 64) {\n const outByte2 = ((byte2 << 4) & 0xf0) | (byte3 >> 2);\n output.push(outByte2);\n\n if (byte4 !== 64) {\n const outByte3 = ((byte3 << 6) & 0xc0) | byte4;\n output.push(outByte3);\n }\n }\n }\n\n return output;\n },\n\n /**\n * Lazy static initialization function. Called before\n * accessing any of the static map variables.\n * @private\n */\n init_() {\n if (!this.byteToCharMap_) {\n this.byteToCharMap_ = {};\n this.charToByteMap_ = {};\n this.byteToCharMapWebSafe_ = {};\n this.charToByteMapWebSafe_ = {};\n\n // We want quick mappings back and forth, so we precompute two maps.\n for (let i = 0; i < this.ENCODED_VALS.length; i++) {\n this.byteToCharMap_[i] = this.ENCODED_VALS.charAt(i);\n this.charToByteMap_[this.byteToCharMap_[i]] = i;\n this.byteToCharMapWebSafe_[i] = this.ENCODED_VALS_WEBSAFE.charAt(i);\n this.charToByteMapWebSafe_[this.byteToCharMapWebSafe_[i]] = i;\n\n // Be forgiving when decoding and correctly decode both encodings.\n if (i >= this.ENCODED_VALS_BASE.length) {\n this.charToByteMap_[this.ENCODED_VALS_WEBSAFE.charAt(i)] = i;\n this.charToByteMapWebSafe_[this.ENCODED_VALS.charAt(i)] = i;\n }\n }\n }\n }\n};\n\n/**\n * An error encountered while decoding base64 string.\n */\nexport class DecodeBase64StringError extends Error {\n readonly name = 'DecodeBase64StringError';\n}\n\n/**\n * URL-safe base64 encoding\n */\nexport const base64Encode = function (str: string): string {\n const utf8Bytes = stringToByteArray(str);\n return base64.encodeByteArray(utf8Bytes, true);\n};\n\n/**\n * URL-safe base64 encoding (without \".\" padding in the end).\n * e.g. Used in JSON Web Token (JWT) parts.\n */\nexport const base64urlEncodeWithoutPadding = function (str: string): string {\n // Use base64url encoding and remove padding in the end (dot characters).\n return base64Encode(str).replace(/\\./g, '');\n};\n\n/**\n * URL-safe base64 decoding\n *\n * NOTE: DO NOT use the global atob() function - it does NOT support the\n * base64Url variant encoding.\n *\n * @param str To be decoded\n * @return Decoded result, if possible\n */\nexport const base64Decode = function (str: string): string | null {\n try {\n return base64.decodeString(str, true);\n } catch (e) {\n console.error('base64Decode failed: ', e);\n }\n return null;\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * Do a deep-copy of basic JavaScript Objects or Arrays.\n */\nexport function deepCopy(value: T): T {\n return deepExtend(undefined, value) as T;\n}\n\n/**\n * Copy properties from source to target (recursively allows extension\n * of Objects and Arrays). Scalar values in the target are over-written.\n * If target is undefined, an object of the appropriate type will be created\n * (and returned).\n *\n * We recursively copy all child properties of plain Objects in the source- so\n * that namespace- like dictionaries are merged.\n *\n * Note that the target can be a function, in which case the properties in\n * the source Object are copied onto it as static properties of the Function.\n *\n * Note: we don't merge __proto__ to prevent prototype pollution\n */\nexport function deepExtend(target: unknown, source: unknown): unknown {\n if (!(source instanceof Object)) {\n return source;\n }\n\n switch (source.constructor) {\n case Date:\n // Treat Dates like scalars; if the target date object had any child\n // properties - they will be lost!\n const dateValue = source as Date;\n return new Date(dateValue.getTime());\n\n case Object:\n if (target === undefined) {\n target = {};\n }\n break;\n case Array:\n // Always copy the array source and overwrite the target.\n target = [];\n break;\n\n default:\n // Not a plain Object - treat it as a scalar.\n return source;\n }\n\n for (const prop in source) {\n // use isValidKey to guard against prototype pollution. See https://snyk.io/vuln/SNYK-JS-LODASH-450202\n if (!source.hasOwnProperty(prop) || !isValidKey(prop)) {\n continue;\n }\n (target as Record)[prop] = deepExtend(\n (target as Record)[prop],\n (source as Record)[prop]\n );\n }\n\n return target;\n}\n\nfunction isValidKey(key: string): boolean {\n return key !== '__proto__';\n}\n","/**\n * @license\n * Copyright 2022 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { base64Decode } from './crypt';\nimport { getGlobal } from './global';\n\n/**\n * Keys for experimental properties on the `FirebaseDefaults` object.\n * @public\n */\nexport type ExperimentalKey = 'authTokenSyncURL' | 'authIdTokenMaxAge';\n\n/**\n * An object that can be injected into the environment as __FIREBASE_DEFAULTS__,\n * either as a property of globalThis, a shell environment variable, or a\n * cookie.\n *\n * This object can be used to automatically configure and initialize\n * a Firebase app as well as any emulators.\n *\n * @public\n */\nexport interface FirebaseDefaults {\n config?: Record;\n emulatorHosts?: Record;\n _authTokenSyncURL?: string;\n _authIdTokenMaxAge?: number;\n /**\n * Override Firebase's runtime environment detection and\n * force the SDK to act as if it were in the specified environment.\n */\n forceEnvironment?: 'browser' | 'node';\n [key: string]: unknown;\n}\n\ndeclare global {\n // Need `var` for this to work.\n // eslint-disable-next-line no-var\n var __FIREBASE_DEFAULTS__: FirebaseDefaults | undefined;\n}\n\nconst getDefaultsFromGlobal = (): FirebaseDefaults | undefined =>\n getGlobal().__FIREBASE_DEFAULTS__;\n\n/**\n * Attempt to read defaults from a JSON string provided to\n * process(.)env(.)__FIREBASE_DEFAULTS__ or a JSON file whose path is in\n * process(.)env(.)__FIREBASE_DEFAULTS_PATH__\n * The dots are in parens because certain compilers (Vite?) cannot\n * handle seeing that variable in comments.\n * See https://github.com/firebase/firebase-js-sdk/issues/6838\n */\nconst getDefaultsFromEnvVariable = (): FirebaseDefaults | undefined => {\n if (typeof process === 'undefined' || typeof process.env === 'undefined') {\n return;\n }\n const defaultsJsonString = process.env.__FIREBASE_DEFAULTS__;\n if (defaultsJsonString) {\n return JSON.parse(defaultsJsonString);\n }\n};\n\nconst getDefaultsFromCookie = (): FirebaseDefaults | undefined => {\n if (typeof document === 'undefined') {\n return;\n }\n let match;\n try {\n match = document.cookie.match(/__FIREBASE_DEFAULTS__=([^;]+)/);\n } catch (e) {\n // Some environments such as Angular Universal SSR have a\n // `document` object but error on accessing `document.cookie`.\n return;\n }\n const decoded = match && base64Decode(match[1]);\n return decoded && JSON.parse(decoded);\n};\n\n/**\n * Get the __FIREBASE_DEFAULTS__ object. It checks in order:\n * (1) if such an object exists as a property of `globalThis`\n * (2) if such an object was provided on a shell environment variable\n * (3) if such an object exists in a cookie\n * @public\n */\nexport const getDefaults = (): FirebaseDefaults | undefined => {\n try {\n return (\n getDefaultsFromGlobal() ||\n getDefaultsFromEnvVariable() ||\n getDefaultsFromCookie()\n );\n } catch (e) {\n /**\n * Catch-all for being unable to get __FIREBASE_DEFAULTS__ due\n * to any environment case we have not accounted for. Log to\n * info instead of swallowing so we can find these unknown cases\n * and add paths for them if needed.\n */\n console.info(`Unable to get __FIREBASE_DEFAULTS__ due to: ${e}`);\n return;\n }\n};\n\n/**\n * Returns emulator host stored in the __FIREBASE_DEFAULTS__ object\n * for the given product.\n * @returns a URL host formatted like `127.0.0.1:9999` or `[::1]:4000` if available\n * @public\n */\nexport const getDefaultEmulatorHost = (\n productName: string\n): string | undefined => getDefaults()?.emulatorHosts?.[productName];\n\n/**\n * Returns emulator hostname and port stored in the __FIREBASE_DEFAULTS__ object\n * for the given product.\n * @returns a pair of hostname and port like `[\"::1\", 4000]` if available\n * @public\n */\nexport const getDefaultEmulatorHostnameAndPort = (\n productName: string\n): [hostname: string, port: number] | undefined => {\n const host = getDefaultEmulatorHost(productName);\n if (!host) {\n return undefined;\n }\n const separatorIndex = host.lastIndexOf(':'); // Finding the last since IPv6 addr also has colons.\n if (separatorIndex <= 0 || separatorIndex + 1 === host.length) {\n throw new Error(`Invalid host ${host} with no separate hostname and port!`);\n }\n // eslint-disable-next-line no-restricted-globals\n const port = parseInt(host.substring(separatorIndex + 1), 10);\n if (host[0] === '[') {\n // Bracket-quoted `[ipv6addr]:port` => return \"ipv6addr\" (without brackets).\n return [host.substring(1, separatorIndex - 1), port];\n } else {\n return [host.substring(0, separatorIndex), port];\n }\n};\n\n/**\n * Returns Firebase app config stored in the __FIREBASE_DEFAULTS__ object.\n * @public\n */\nexport const getDefaultAppConfig = (): Record | undefined =>\n getDefaults()?.config;\n\n/**\n * Returns an experimental setting on the __FIREBASE_DEFAULTS__ object (properties\n * prefixed by \"_\")\n * @public\n */\nexport const getExperimentalSetting = (\n name: T\n): FirebaseDefaults[`_${T}`] =>\n getDefaults()?.[`_${name}`] as FirebaseDefaults[`_${T}`];\n","/**\n * @license\n * Copyright 2022 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * Polyfill for `globalThis` object.\n * @returns the `globalThis` object for the given environment.\n * @public\n */\nexport function getGlobal(): typeof globalThis {\n if (typeof self !== 'undefined') {\n return self;\n }\n if (typeof window !== 'undefined') {\n return window;\n }\n if (typeof global !== 'undefined') {\n return global;\n }\n throw new Error('Unable to locate global object.');\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nexport class Deferred {\n promise: Promise;\n reject: (value?: unknown) => void = () => {};\n resolve: (value?: unknown) => void = () => {};\n constructor() {\n this.promise = new Promise((resolve, reject) => {\n this.resolve = resolve as (value?: unknown) => void;\n this.reject = reject as (value?: unknown) => void;\n });\n }\n\n /**\n * Our API internals are not promiseified and cannot because our callback APIs have subtle expectations around\n * invoking promises inline, which Promises are forbidden to do. This method accepts an optional node-style callback\n * and returns a node-style callback which will resolve or reject the Deferred's promise.\n */\n wrapCallback(\n callback?: (error?: unknown, value?: unknown) => void\n ): (error: unknown, value?: unknown) => void {\n return (error, value?) => {\n if (error) {\n this.reject(error);\n } else {\n this.resolve(value);\n }\n if (typeof callback === 'function') {\n // Attaching noop handler just in case developer wasn't expecting\n // promises\n this.promise.catch(() => {});\n\n // Some of our callbacks don't expect a value and our own tests\n // assert that the parameter length is 1\n if (callback.length === 1) {\n callback(error);\n } else {\n callback(error, value);\n }\n }\n };\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { CONSTANTS } from './constants';\nimport { getDefaults } from './defaults';\n\n/**\n * Returns navigator.userAgent string or '' if it's not defined.\n * @return user agent string\n */\nexport function getUA(): string {\n if (\n typeof navigator !== 'undefined' &&\n typeof navigator['userAgent'] === 'string'\n ) {\n return navigator['userAgent'];\n } else {\n return '';\n }\n}\n\n/**\n * Detect Cordova / PhoneGap / Ionic frameworks on a mobile device.\n *\n * Deliberately does not rely on checking `file://` URLs (as this fails PhoneGap\n * in the Ripple emulator) nor Cordova `onDeviceReady`, which would normally\n * wait for a callback.\n */\nexport function isMobileCordova(): boolean {\n return (\n typeof window !== 'undefined' &&\n // @ts-ignore Setting up an broadly applicable index signature for Window\n // just to deal with this case would probably be a bad idea.\n !!(window['cordova'] || window['phonegap'] || window['PhoneGap']) &&\n /ios|iphone|ipod|ipad|android|blackberry|iemobile/i.test(getUA())\n );\n}\n\n/**\n * Detect Node.js.\n *\n * @return true if Node.js environment is detected or specified.\n */\n// Node detection logic from: https://github.com/iliakan/detect-node/\nexport function isNode(): boolean {\n const forceEnvironment = getDefaults()?.forceEnvironment;\n if (forceEnvironment === 'node') {\n return true;\n } else if (forceEnvironment === 'browser') {\n return false;\n }\n\n try {\n return (\n Object.prototype.toString.call(global.process) === '[object process]'\n );\n } catch (e) {\n return false;\n }\n}\n\n/**\n * Detect Browser Environment\n */\nexport function isBrowser(): boolean {\n return typeof self === 'object' && self.self === self;\n}\n\n/**\n * Detect browser extensions (Chrome and Firefox at least).\n */\ninterface BrowserRuntime {\n id?: unknown;\n}\ndeclare const chrome: { runtime?: BrowserRuntime };\ndeclare const browser: { runtime?: BrowserRuntime };\nexport function isBrowserExtension(): boolean {\n const runtime =\n typeof chrome === 'object'\n ? chrome.runtime\n : typeof browser === 'object'\n ? browser.runtime\n : undefined;\n return typeof runtime === 'object' && runtime.id !== undefined;\n}\n\n/**\n * Detect React Native.\n *\n * @return true if ReactNative environment is detected.\n */\nexport function isReactNative(): boolean {\n return (\n typeof navigator === 'object' && navigator['product'] === 'ReactNative'\n );\n}\n\n/** Detects Electron apps. */\nexport function isElectron(): boolean {\n return getUA().indexOf('Electron/') >= 0;\n}\n\n/** Detects Internet Explorer. */\nexport function isIE(): boolean {\n const ua = getUA();\n return ua.indexOf('MSIE ') >= 0 || ua.indexOf('Trident/') >= 0;\n}\n\n/** Detects Universal Windows Platform apps. */\nexport function isUWP(): boolean {\n return getUA().indexOf('MSAppHost/') >= 0;\n}\n\n/**\n * Detect whether the current SDK build is the Node version.\n *\n * @return true if it's the Node SDK build.\n */\nexport function isNodeSdk(): boolean {\n return CONSTANTS.NODE_CLIENT === true || CONSTANTS.NODE_ADMIN === true;\n}\n\n/** Returns true if we are running in Safari. */\nexport function isSafari(): boolean {\n return (\n !isNode() &&\n navigator.userAgent.includes('Safari') &&\n !navigator.userAgent.includes('Chrome')\n );\n}\n\n/**\n * This method checks if indexedDB is supported by current browser/service worker context\n * @return true if indexedDB is supported by current browser/service worker context\n */\nexport function isIndexedDBAvailable(): boolean {\n try {\n return typeof indexedDB === 'object';\n } catch (e) {\n return false;\n }\n}\n\n/**\n * This method validates browser/sw context for indexedDB by opening a dummy indexedDB database and reject\n * if errors occur during the database open operation.\n *\n * @throws exception if current browser/sw context can't run idb.open (ex: Safari iframe, Firefox\n * private browsing)\n */\nexport function validateIndexedDBOpenable(): Promise {\n return new Promise((resolve, reject) => {\n try {\n let preExist: boolean = true;\n const DB_CHECK_NAME =\n 'validate-browser-context-for-indexeddb-analytics-module';\n const request = self.indexedDB.open(DB_CHECK_NAME);\n request.onsuccess = () => {\n request.result.close();\n // delete database only when it doesn't pre-exist\n if (!preExist) {\n self.indexedDB.deleteDatabase(DB_CHECK_NAME);\n }\n resolve(true);\n };\n request.onupgradeneeded = () => {\n preExist = false;\n };\n\n request.onerror = () => {\n reject(request.error?.message || '');\n };\n } catch (error) {\n reject(error);\n }\n });\n}\n\n/**\n *\n * This method checks whether cookie is enabled within current browser\n * @return true if cookie is enabled within current browser\n */\nexport function areCookiesEnabled(): boolean {\n if (typeof navigator === 'undefined' || !navigator.cookieEnabled) {\n return false;\n }\n return true;\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n/**\n * @fileoverview Standardized Firebase Error.\n *\n * Usage:\n *\n * // Typescript string literals for type-safe codes\n * type Err =\n * 'unknown' |\n * 'object-not-found'\n * ;\n *\n * // Closure enum for type-safe error codes\n * // at-enum {string}\n * var Err = {\n * UNKNOWN: 'unknown',\n * OBJECT_NOT_FOUND: 'object-not-found',\n * }\n *\n * let errors: Map = {\n * 'generic-error': \"Unknown error\",\n * 'file-not-found': \"Could not find file: {$file}\",\n * };\n *\n * // Type-safe function - must pass a valid error code as param.\n * let error = new ErrorFactory('service', 'Service', errors);\n *\n * ...\n * throw error.create(Err.GENERIC);\n * ...\n * throw error.create(Err.FILE_NOT_FOUND, {'file': fileName});\n * ...\n * // Service: Could not file file: foo.txt (service/file-not-found).\n *\n * catch (e) {\n * assert(e.message === \"Could not find file: foo.txt.\");\n * if ((e as FirebaseError)?.code === 'service/file-not-found') {\n * console.log(\"Could not read file: \" + e['file']);\n * }\n * }\n */\n\nexport type ErrorMap = {\n readonly [K in ErrorCode]: string;\n};\n\nconst ERROR_NAME = 'FirebaseError';\n\nexport interface StringLike {\n toString(): string;\n}\n\nexport interface ErrorData {\n [key: string]: unknown;\n}\n\n// Based on code from:\n// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error#Custom_Error_Types\nexport class FirebaseError extends Error {\n /** The custom name for all FirebaseErrors. */\n readonly name: string = ERROR_NAME;\n\n constructor(\n /** The error code for this error. */\n readonly code: string,\n message: string,\n /** Custom data for this error. */\n public customData?: Record\n ) {\n super(message);\n\n // Fix For ES5\n // https://github.com/Microsoft/TypeScript-wiki/blob/master/Breaking-Changes.md#extending-built-ins-like-error-array-and-map-may-no-longer-work\n Object.setPrototypeOf(this, FirebaseError.prototype);\n\n // Maintains proper stack trace for where our error was thrown.\n // Only available on V8.\n if (Error.captureStackTrace) {\n Error.captureStackTrace(this, ErrorFactory.prototype.create);\n }\n }\n}\n\nexport class ErrorFactory<\n ErrorCode extends string,\n ErrorParams extends { readonly [K in ErrorCode]?: ErrorData } = {}\n> {\n constructor(\n private readonly service: string,\n private readonly serviceName: string,\n private readonly errors: ErrorMap\n ) {}\n\n create(\n code: K,\n ...data: K extends keyof ErrorParams ? [ErrorParams[K]] : []\n ): FirebaseError {\n const customData = (data[0] as ErrorData) || {};\n const fullCode = `${this.service}/${code}`;\n const template = this.errors[code];\n\n const message = template ? replaceTemplate(template, customData) : 'Error';\n // Service Name: Error message (service/code).\n const fullMessage = `${this.serviceName}: ${message} (${fullCode}).`;\n\n const error = new FirebaseError(fullCode, fullMessage, customData);\n\n return error;\n }\n}\n\nfunction replaceTemplate(template: string, data: ErrorData): string {\n return template.replace(PATTERN, (_, key) => {\n const value = data[key];\n return value != null ? String(value) : `<${key}?>`;\n });\n}\n\nconst PATTERN = /\\{\\$([^}]+)}/g;\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * Evaluates a JSON string into a javascript object.\n *\n * @param {string} str A string containing JSON.\n * @return {*} The javascript object representing the specified JSON.\n */\nexport function jsonEval(str: string): unknown {\n return JSON.parse(str);\n}\n\n/**\n * Returns JSON representing a javascript object.\n * @param {*} data Javascript object to be stringified.\n * @return {string} The JSON contents of the object.\n */\nexport function stringify(data: unknown): string {\n return JSON.stringify(data);\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { base64Decode } from './crypt';\nimport { jsonEval } from './json';\n\ninterface Claims {\n [key: string]: {};\n}\n\ninterface DecodedToken {\n header: object;\n claims: Claims;\n data: object;\n signature: string;\n}\n\n/**\n * Decodes a Firebase auth. token into constituent parts.\n *\n * Notes:\n * - May return with invalid / incomplete claims if there's no native base64 decoding support.\n * - Doesn't check if the token is actually valid.\n */\nexport const decode = function (token: string): DecodedToken {\n let header = {},\n claims: Claims = {},\n data = {},\n signature = '';\n\n try {\n const parts = token.split('.');\n header = jsonEval(base64Decode(parts[0]) || '') as object;\n claims = jsonEval(base64Decode(parts[1]) || '') as Claims;\n signature = parts[2];\n data = claims['d'] || {};\n delete claims['d'];\n } catch (e) {}\n\n return {\n header,\n claims,\n data,\n signature\n };\n};\n\ninterface DecodedToken {\n header: object;\n claims: Claims;\n data: object;\n signature: string;\n}\n\n/**\n * Decodes a Firebase auth. token and checks the validity of its time-based claims. Will return true if the\n * token is within the time window authorized by the 'nbf' (not-before) and 'iat' (issued-at) claims.\n *\n * Notes:\n * - May return a false negative if there's no native base64 decoding support.\n * - Doesn't check if the token is actually valid.\n */\nexport const isValidTimestamp = function (token: string): boolean {\n const claims: Claims = decode(token).claims;\n const now: number = Math.floor(new Date().getTime() / 1000);\n let validSince: number = 0,\n validUntil: number = 0;\n\n if (typeof claims === 'object') {\n if (claims.hasOwnProperty('nbf')) {\n validSince = claims['nbf'] as number;\n } else if (claims.hasOwnProperty('iat')) {\n validSince = claims['iat'] as number;\n }\n\n if (claims.hasOwnProperty('exp')) {\n validUntil = claims['exp'] as number;\n } else {\n // token will expire after 24h by default\n validUntil = validSince + 86400;\n }\n }\n\n return (\n !!now &&\n !!validSince &&\n !!validUntil &&\n now >= validSince &&\n now <= validUntil\n );\n};\n\n/**\n * Decodes a Firebase auth. token and returns its issued at time if valid, null otherwise.\n *\n * Notes:\n * - May return null if there's no native base64 decoding support.\n * - Doesn't check if the token is actually valid.\n */\nexport const issuedAtTime = function (token: string): number | null {\n const claims: Claims = decode(token).claims;\n if (typeof claims === 'object' && claims.hasOwnProperty('iat')) {\n return claims['iat'] as number;\n }\n return null;\n};\n\n/**\n * Decodes a Firebase auth. token and checks the validity of its format. Expects a valid issued-at time.\n *\n * Notes:\n * - May return a false negative if there's no native base64 decoding support.\n * - Doesn't check if the token is actually valid.\n */\nexport const isValidFormat = function (token: string): boolean {\n const decoded = decode(token),\n claims = decoded.claims;\n\n return !!claims && typeof claims === 'object' && claims.hasOwnProperty('iat');\n};\n\n/**\n * Attempts to peer into an auth token and determine if it's an admin auth token by looking at the claims portion.\n *\n * Notes:\n * - May return a false negative if there's no native base64 decoding support.\n * - Doesn't check if the token is actually valid.\n */\nexport const isAdmin = function (token: string): boolean {\n const claims: Claims = decode(token).claims;\n return typeof claims === 'object' && claims['admin'] === true;\n};\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nexport function contains(obj: T, key: string): boolean {\n return Object.prototype.hasOwnProperty.call(obj, key);\n}\n\nexport function safeGet(\n obj: T,\n key: K\n): T[K] | undefined {\n if (Object.prototype.hasOwnProperty.call(obj, key)) {\n return obj[key];\n } else {\n return undefined;\n }\n}\n\nexport function isEmpty(obj: object): obj is {} {\n for (const key in obj) {\n if (Object.prototype.hasOwnProperty.call(obj, key)) {\n return false;\n }\n }\n return true;\n}\n\nexport function map(\n obj: { [key in K]: V },\n fn: (value: V, key: K, obj: { [key in K]: V }) => U,\n contextObj?: unknown\n): { [key in K]: U } {\n const res: Partial<{ [key in K]: U }> = {};\n for (const key in obj) {\n if (Object.prototype.hasOwnProperty.call(obj, key)) {\n res[key] = fn.call(contextObj, obj[key], key, obj);\n }\n }\n return res as { [key in K]: U };\n}\n\n/**\n * Deep equal two objects. Support Arrays and Objects.\n */\nexport function deepEqual(a: object, b: object): boolean {\n if (a === b) {\n return true;\n }\n\n const aKeys = Object.keys(a);\n const bKeys = Object.keys(b);\n for (const k of aKeys) {\n if (!bKeys.includes(k)) {\n return false;\n }\n\n const aProp = (a as Record)[k];\n const bProp = (b as Record)[k];\n if (isObject(aProp) && isObject(bProp)) {\n if (!deepEqual(aProp, bProp)) {\n return false;\n }\n } else if (aProp !== bProp) {\n return false;\n }\n }\n\n for (const k of bKeys) {\n if (!aKeys.includes(k)) {\n return false;\n }\n }\n return true;\n}\n\nfunction isObject(thing: unknown): thing is object {\n return thing !== null && typeof thing === 'object';\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview SHA-1 cryptographic hash.\n * Variable names follow the notation in FIPS PUB 180-3:\n * http://csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf.\n *\n * Usage:\n * var sha1 = new sha1();\n * sha1.update(bytes);\n * var hash = sha1.digest();\n *\n * Performance:\n * Chrome 23: ~400 Mbit/s\n * Firefox 16: ~250 Mbit/s\n *\n */\n\n/**\n * SHA-1 cryptographic hash constructor.\n *\n * The properties declared here are discussed in the above algorithm document.\n * @constructor\n * @final\n * @struct\n */\nexport class Sha1 {\n /**\n * Holds the previous values of accumulated variables a-e in the compress_\n * function.\n * @private\n */\n private chain_: number[] = [];\n\n /**\n * A buffer holding the partially computed hash result.\n * @private\n */\n private buf_: number[] = [];\n\n /**\n * An array of 80 bytes, each a part of the message to be hashed. Referred to\n * as the message schedule in the docs.\n * @private\n */\n private W_: number[] = [];\n\n /**\n * Contains data needed to pad messages less than 64 bytes.\n * @private\n */\n private pad_: number[] = [];\n\n /**\n * @private {number}\n */\n private inbuf_: number = 0;\n\n /**\n * @private {number}\n */\n private total_: number = 0;\n\n blockSize: number;\n\n constructor() {\n this.blockSize = 512 / 8;\n\n this.pad_[0] = 128;\n for (let i = 1; i < this.blockSize; ++i) {\n this.pad_[i] = 0;\n }\n\n this.reset();\n }\n\n reset(): void {\n this.chain_[0] = 0x67452301;\n this.chain_[1] = 0xefcdab89;\n this.chain_[2] = 0x98badcfe;\n this.chain_[3] = 0x10325476;\n this.chain_[4] = 0xc3d2e1f0;\n\n this.inbuf_ = 0;\n this.total_ = 0;\n }\n\n /**\n * Internal compress helper function.\n * @param buf Block to compress.\n * @param offset Offset of the block in the buffer.\n * @private\n */\n compress_(buf: number[] | Uint8Array | string, offset?: number): void {\n if (!offset) {\n offset = 0;\n }\n\n const W = this.W_;\n\n // get 16 big endian words\n if (typeof buf === 'string') {\n for (let i = 0; i < 16; i++) {\n // TODO(user): [bug 8140122] Recent versions of Safari for Mac OS and iOS\n // have a bug that turns the post-increment ++ operator into pre-increment\n // during JIT compilation. We have code that depends heavily on SHA-1 for\n // correctness and which is affected by this bug, so I've removed all uses\n // of post-increment ++ in which the result value is used. We can revert\n // this change once the Safari bug\n // (https://bugs.webkit.org/show_bug.cgi?id=109036) has been fixed and\n // most clients have been updated.\n W[i] =\n (buf.charCodeAt(offset) << 24) |\n (buf.charCodeAt(offset + 1) << 16) |\n (buf.charCodeAt(offset + 2) << 8) |\n buf.charCodeAt(offset + 3);\n offset += 4;\n }\n } else {\n for (let i = 0; i < 16; i++) {\n W[i] =\n (buf[offset] << 24) |\n (buf[offset + 1] << 16) |\n (buf[offset + 2] << 8) |\n buf[offset + 3];\n offset += 4;\n }\n }\n\n // expand to 80 words\n for (let i = 16; i < 80; i++) {\n const t = W[i - 3] ^ W[i - 8] ^ W[i - 14] ^ W[i - 16];\n W[i] = ((t << 1) | (t >>> 31)) & 0xffffffff;\n }\n\n let a = this.chain_[0];\n let b = this.chain_[1];\n let c = this.chain_[2];\n let d = this.chain_[3];\n let e = this.chain_[4];\n let f, k;\n\n // TODO(user): Try to unroll this loop to speed up the computation.\n for (let i = 0; i < 80; i++) {\n if (i < 40) {\n if (i < 20) {\n f = d ^ (b & (c ^ d));\n k = 0x5a827999;\n } else {\n f = b ^ c ^ d;\n k = 0x6ed9eba1;\n }\n } else {\n if (i < 60) {\n f = (b & c) | (d & (b | c));\n k = 0x8f1bbcdc;\n } else {\n f = b ^ c ^ d;\n k = 0xca62c1d6;\n }\n }\n\n const t = (((a << 5) | (a >>> 27)) + f + e + k + W[i]) & 0xffffffff;\n e = d;\n d = c;\n c = ((b << 30) | (b >>> 2)) & 0xffffffff;\n b = a;\n a = t;\n }\n\n this.chain_[0] = (this.chain_[0] + a) & 0xffffffff;\n this.chain_[1] = (this.chain_[1] + b) & 0xffffffff;\n this.chain_[2] = (this.chain_[2] + c) & 0xffffffff;\n this.chain_[3] = (this.chain_[3] + d) & 0xffffffff;\n this.chain_[4] = (this.chain_[4] + e) & 0xffffffff;\n }\n\n update(bytes?: number[] | Uint8Array | string, length?: number): void {\n // TODO(johnlenz): tighten the function signature and remove this check\n if (bytes == null) {\n return;\n }\n\n if (length === undefined) {\n length = bytes.length;\n }\n\n const lengthMinusBlock = length - this.blockSize;\n let n = 0;\n // Using local instead of member variables gives ~5% speedup on Firefox 16.\n const buf = this.buf_;\n let inbuf = this.inbuf_;\n\n // The outer while loop should execute at most twice.\n while (n < length) {\n // When we have no data in the block to top up, we can directly process the\n // input buffer (assuming it contains sufficient data). This gives ~25%\n // speedup on Chrome 23 and ~15% speedup on Firefox 16, but requires that\n // the data is provided in large chunks (or in multiples of 64 bytes).\n if (inbuf === 0) {\n while (n <= lengthMinusBlock) {\n this.compress_(bytes, n);\n n += this.blockSize;\n }\n }\n\n if (typeof bytes === 'string') {\n while (n < length) {\n buf[inbuf] = bytes.charCodeAt(n);\n ++inbuf;\n ++n;\n if (inbuf === this.blockSize) {\n this.compress_(buf);\n inbuf = 0;\n // Jump to the outer loop so we use the full-block optimization.\n break;\n }\n }\n } else {\n while (n < length) {\n buf[inbuf] = bytes[n];\n ++inbuf;\n ++n;\n if (inbuf === this.blockSize) {\n this.compress_(buf);\n inbuf = 0;\n // Jump to the outer loop so we use the full-block optimization.\n break;\n }\n }\n }\n }\n\n this.inbuf_ = inbuf;\n this.total_ += length;\n }\n\n /** @override */\n digest(): number[] {\n const digest: number[] = [];\n let totalBits = this.total_ * 8;\n\n // Add pad 0x80 0x00*.\n if (this.inbuf_ < 56) {\n this.update(this.pad_, 56 - this.inbuf_);\n } else {\n this.update(this.pad_, this.blockSize - (this.inbuf_ - 56));\n }\n\n // Add # bits.\n for (let i = this.blockSize - 1; i >= 56; i--) {\n this.buf_[i] = totalBits & 255;\n totalBits /= 256; // Don't use bit-shifting here!\n }\n\n this.compress_(this.buf_);\n\n let n = 0;\n for (let i = 0; i < 5; i++) {\n for (let j = 24; j >= 0; j -= 8) {\n digest[n] = (this.chain_[i] >> j) & 255;\n ++n;\n }\n }\n return digest;\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * Check to make sure the appropriate number of arguments are provided for a public function.\n * Throws an error if it fails.\n *\n * @param fnName The function name\n * @param minCount The minimum number of arguments to allow for the function call\n * @param maxCount The maximum number of argument to allow for the function call\n * @param argCount The actual number of arguments provided.\n */\nexport const validateArgCount = function (\n fnName: string,\n minCount: number,\n maxCount: number,\n argCount: number\n): void {\n let argError;\n if (argCount < minCount) {\n argError = 'at least ' + minCount;\n } else if (argCount > maxCount) {\n argError = maxCount === 0 ? 'none' : 'no more than ' + maxCount;\n }\n if (argError) {\n const error =\n fnName +\n ' failed: Was called with ' +\n argCount +\n (argCount === 1 ? ' argument.' : ' arguments.') +\n ' Expects ' +\n argError +\n '.';\n throw new Error(error);\n }\n};\n\n/**\n * Generates a string to prefix an error message about failed argument validation\n *\n * @param fnName The function name\n * @param argName The name of the argument\n * @return The prefix to add to the error thrown for validation.\n */\nexport function errorPrefix(fnName: string, argName: string): string {\n return `${fnName} failed: ${argName} argument `;\n}\n\n/**\n * @param fnName\n * @param argumentNumber\n * @param namespace\n * @param optional\n */\nexport function validateNamespace(\n fnName: string,\n namespace: string,\n optional: boolean\n): void {\n if (optional && !namespace) {\n return;\n }\n if (typeof namespace !== 'string') {\n //TODO: I should do more validation here. We only allow certain chars in namespaces.\n throw new Error(\n errorPrefix(fnName, 'namespace') + 'must be a valid firebase namespace.'\n );\n }\n}\n\nexport function validateCallback(\n fnName: string,\n argumentName: string,\n // eslint-disable-next-line @typescript-eslint/ban-types\n callback: Function,\n optional: boolean\n): void {\n if (optional && !callback) {\n return;\n }\n if (typeof callback !== 'function') {\n throw new Error(\n errorPrefix(fnName, argumentName) + 'must be a valid function.'\n );\n }\n}\n\nexport function validateContextObject(\n fnName: string,\n argumentName: string,\n context: unknown,\n optional: boolean\n): void {\n if (optional && !context) {\n return;\n }\n if (typeof context !== 'object' || context === null) {\n throw new Error(\n errorPrefix(fnName, argumentName) + 'must be a valid context object.'\n );\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { assert } from './assert';\n\n// Code originally came from goog.crypt.stringToUtf8ByteArray, but for some reason they\n// automatically replaced '\\r\\n' with '\\n', and they didn't handle surrogate pairs,\n// so it's been modified.\n\n// Note that not all Unicode characters appear as single characters in JavaScript strings.\n// fromCharCode returns the UTF-16 encoding of a character - so some Unicode characters\n// use 2 characters in Javascript. All 4-byte UTF-8 characters begin with a first\n// character in the range 0xD800 - 0xDBFF (the first character of a so-called surrogate\n// pair).\n// See http://www.ecma-international.org/ecma-262/5.1/#sec-15.1.3\n\n/**\n * @param {string} str\n * @return {Array}\n */\nexport const stringToByteArray = function (str: string): number[] {\n const out: number[] = [];\n let p = 0;\n for (let i = 0; i < str.length; i++) {\n let c = str.charCodeAt(i);\n\n // Is this the lead surrogate in a surrogate pair?\n if (c >= 0xd800 && c <= 0xdbff) {\n const high = c - 0xd800; // the high 10 bits.\n i++;\n assert(i < str.length, 'Surrogate pair missing trail surrogate.');\n const low = str.charCodeAt(i) - 0xdc00; // the low 10 bits.\n c = 0x10000 + (high << 10) + low;\n }\n\n if (c < 128) {\n out[p++] = c;\n } else if (c < 2048) {\n out[p++] = (c >> 6) | 192;\n out[p++] = (c & 63) | 128;\n } else if (c < 65536) {\n out[p++] = (c >> 12) | 224;\n out[p++] = ((c >> 6) & 63) | 128;\n out[p++] = (c & 63) | 128;\n } else {\n out[p++] = (c >> 18) | 240;\n out[p++] = ((c >> 12) & 63) | 128;\n out[p++] = ((c >> 6) & 63) | 128;\n out[p++] = (c & 63) | 128;\n }\n }\n return out;\n};\n\n/**\n * Calculate length without actually converting; useful for doing cheaper validation.\n * @param {string} str\n * @return {number}\n */\nexport const stringLength = function (str: string): number {\n let p = 0;\n for (let i = 0; i < str.length; i++) {\n const c = str.charCodeAt(i);\n if (c < 128) {\n p++;\n } else if (c < 2048) {\n p += 2;\n } else if (c >= 0xd800 && c <= 0xdbff) {\n // Lead surrogate of a surrogate pair. The pair together will take 4 bytes to represent.\n p += 4;\n i++; // skip trail surrogate.\n } else {\n p += 3;\n }\n }\n return p;\n};\n","/**\n * @license\n * Copyright 2021 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nexport interface Compat {\n _delegate: T;\n}\n\nexport function getModularInstance(\n service: Compat | ExpService\n): ExpService {\n if (service && (service as Compat)._delegate) {\n return (service as Compat)._delegate;\n } else {\n return service as ExpService;\n }\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nimport {\n InstantiationMode,\n InstanceFactory,\n ComponentType,\n Dictionary,\n Name,\n onInstanceCreatedCallback\n} from './types';\n\n/**\n * Component for service name T, e.g. `auth`, `auth-internal`\n */\nexport class Component {\n multipleInstances = false;\n /**\n * Properties to be added to the service namespace\n */\n serviceProps: Dictionary = {};\n\n instantiationMode = InstantiationMode.LAZY;\n\n onInstanceCreated: onInstanceCreatedCallback | null = null;\n\n /**\n *\n * @param name The public service name, e.g. app, auth, firestore, database\n * @param instanceFactory Service factory responsible for creating the public interface\n * @param type whether the service provided by the component is public or private\n */\n constructor(\n readonly name: T,\n readonly instanceFactory: InstanceFactory,\n readonly type: ComponentType\n ) {}\n\n setInstantiationMode(mode: InstantiationMode): this {\n this.instantiationMode = mode;\n return this;\n }\n\n setMultipleInstances(multipleInstances: boolean): this {\n this.multipleInstances = multipleInstances;\n return this;\n }\n\n setServiceProps(props: Dictionary): this {\n this.serviceProps = props;\n return this;\n }\n\n setInstanceCreatedCallback(callback: onInstanceCreatedCallback): this {\n this.onInstanceCreated = callback;\n return this;\n }\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nexport const DEFAULT_ENTRY_NAME = '[DEFAULT]';\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Deferred } from '@firebase/util';\nimport { ComponentContainer } from './component_container';\nimport { DEFAULT_ENTRY_NAME } from './constants';\nimport {\n InitializeOptions,\n InstantiationMode,\n Name,\n NameServiceMapping,\n OnInitCallBack\n} from './types';\nimport { Component } from './component';\n\n/**\n * Provider for instance for service name T, e.g. 'auth', 'auth-internal'\n * NameServiceMapping[T] is an alias for the type of the instance\n */\nexport class Provider {\n private component: Component | null = null;\n private readonly instances: Map = new Map();\n private readonly instancesDeferred: Map<\n string,\n Deferred\n > = new Map();\n private readonly instancesOptions: Map> =\n new Map();\n private onInitCallbacks: Map>> = new Map();\n\n constructor(\n private readonly name: T,\n private readonly container: ComponentContainer\n ) {}\n\n /**\n * @param identifier A provider can provide mulitple instances of a service\n * if this.component.multipleInstances is true.\n */\n get(identifier?: string): Promise {\n // if multipleInstances is not supported, use the default name\n const normalizedIdentifier = this.normalizeInstanceIdentifier(identifier);\n\n if (!this.instancesDeferred.has(normalizedIdentifier)) {\n const deferred = new Deferred();\n this.instancesDeferred.set(normalizedIdentifier, deferred);\n\n if (\n this.isInitialized(normalizedIdentifier) ||\n this.shouldAutoInitialize()\n ) {\n // initialize the service if it can be auto-initialized\n try {\n const instance = this.getOrInitializeService({\n instanceIdentifier: normalizedIdentifier\n });\n if (instance) {\n deferred.resolve(instance);\n }\n } catch (e) {\n // when the instance factory throws an exception during get(), it should not cause\n // a fatal error. We just return the unresolved promise in this case.\n }\n }\n }\n\n return this.instancesDeferred.get(normalizedIdentifier)!.promise;\n }\n\n /**\n *\n * @param options.identifier A provider can provide mulitple instances of a service\n * if this.component.multipleInstances is true.\n * @param options.optional If optional is false or not provided, the method throws an error when\n * the service is not immediately available.\n * If optional is true, the method returns null if the service is not immediately available.\n */\n getImmediate(options: {\n identifier?: string;\n optional: true;\n }): NameServiceMapping[T] | null;\n getImmediate(options?: {\n identifier?: string;\n optional?: false;\n }): NameServiceMapping[T];\n getImmediate(options?: {\n identifier?: string;\n optional?: boolean;\n }): NameServiceMapping[T] | null {\n // if multipleInstances is not supported, use the default name\n const normalizedIdentifier = this.normalizeInstanceIdentifier(\n options?.identifier\n );\n const optional = options?.optional ?? false;\n\n if (\n this.isInitialized(normalizedIdentifier) ||\n this.shouldAutoInitialize()\n ) {\n try {\n return this.getOrInitializeService({\n instanceIdentifier: normalizedIdentifier\n });\n } catch (e) {\n if (optional) {\n return null;\n } else {\n throw e;\n }\n }\n } else {\n // In case a component is not initialized and should/can not be auto-initialized at the moment, return null if the optional flag is set, or throw\n if (optional) {\n return null;\n } else {\n throw Error(`Service ${this.name} is not available`);\n }\n }\n }\n\n getComponent(): Component | null {\n return this.component;\n }\n\n setComponent(component: Component): void {\n if (component.name !== this.name) {\n throw Error(\n `Mismatching Component ${component.name} for Provider ${this.name}.`\n );\n }\n\n if (this.component) {\n throw Error(`Component for ${this.name} has already been provided`);\n }\n\n this.component = component;\n\n // return early without attempting to initialize the component if the component requires explicit initialization (calling `Provider.initialize()`)\n if (!this.shouldAutoInitialize()) {\n return;\n }\n\n // if the service is eager, initialize the default instance\n if (isComponentEager(component)) {\n try {\n this.getOrInitializeService({ instanceIdentifier: DEFAULT_ENTRY_NAME });\n } catch (e) {\n // when the instance factory for an eager Component throws an exception during the eager\n // initialization, it should not cause a fatal error.\n // TODO: Investigate if we need to make it configurable, because some component may want to cause\n // a fatal error in this case?\n }\n }\n\n // Create service instances for the pending promises and resolve them\n // NOTE: if this.multipleInstances is false, only the default instance will be created\n // and all promises with resolve with it regardless of the identifier.\n for (const [\n instanceIdentifier,\n instanceDeferred\n ] of this.instancesDeferred.entries()) {\n const normalizedIdentifier =\n this.normalizeInstanceIdentifier(instanceIdentifier);\n\n try {\n // `getOrInitializeService()` should always return a valid instance since a component is guaranteed. use ! to make typescript happy.\n const instance = this.getOrInitializeService({\n instanceIdentifier: normalizedIdentifier\n })!;\n instanceDeferred.resolve(instance);\n } catch (e) {\n // when the instance factory throws an exception, it should not cause\n // a fatal error. We just leave the promise unresolved.\n }\n }\n }\n\n clearInstance(identifier: string = DEFAULT_ENTRY_NAME): void {\n this.instancesDeferred.delete(identifier);\n this.instancesOptions.delete(identifier);\n this.instances.delete(identifier);\n }\n\n // app.delete() will call this method on every provider to delete the services\n // TODO: should we mark the provider as deleted?\n async delete(): Promise {\n const services = Array.from(this.instances.values());\n\n await Promise.all([\n ...services\n .filter(service => 'INTERNAL' in service) // legacy services\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n .map(service => (service as any).INTERNAL!.delete()),\n ...services\n .filter(service => '_delete' in service) // modularized services\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n .map(service => (service as any)._delete())\n ]);\n }\n\n isComponentSet(): boolean {\n return this.component != null;\n }\n\n isInitialized(identifier: string = DEFAULT_ENTRY_NAME): boolean {\n return this.instances.has(identifier);\n }\n\n getOptions(identifier: string = DEFAULT_ENTRY_NAME): Record {\n return this.instancesOptions.get(identifier) || {};\n }\n\n initialize(opts: InitializeOptions = {}): NameServiceMapping[T] {\n const { options = {} } = opts;\n const normalizedIdentifier = this.normalizeInstanceIdentifier(\n opts.instanceIdentifier\n );\n if (this.isInitialized(normalizedIdentifier)) {\n throw Error(\n `${this.name}(${normalizedIdentifier}) has already been initialized`\n );\n }\n\n if (!this.isComponentSet()) {\n throw Error(`Component ${this.name} has not been registered yet`);\n }\n\n const instance = this.getOrInitializeService({\n instanceIdentifier: normalizedIdentifier,\n options\n })!;\n\n // resolve any pending promise waiting for the service instance\n for (const [\n instanceIdentifier,\n instanceDeferred\n ] of this.instancesDeferred.entries()) {\n const normalizedDeferredIdentifier =\n this.normalizeInstanceIdentifier(instanceIdentifier);\n if (normalizedIdentifier === normalizedDeferredIdentifier) {\n instanceDeferred.resolve(instance);\n }\n }\n\n return instance;\n }\n\n /**\n *\n * @param callback - a function that will be invoked after the provider has been initialized by calling provider.initialize().\n * The function is invoked SYNCHRONOUSLY, so it should not execute any longrunning tasks in order to not block the program.\n *\n * @param identifier An optional instance identifier\n * @returns a function to unregister the callback\n */\n onInit(callback: OnInitCallBack, identifier?: string): () => void {\n const normalizedIdentifier = this.normalizeInstanceIdentifier(identifier);\n const existingCallbacks =\n this.onInitCallbacks.get(normalizedIdentifier) ??\n new Set>();\n existingCallbacks.add(callback);\n this.onInitCallbacks.set(normalizedIdentifier, existingCallbacks);\n\n const existingInstance = this.instances.get(normalizedIdentifier);\n if (existingInstance) {\n callback(existingInstance, normalizedIdentifier);\n }\n\n return () => {\n existingCallbacks.delete(callback);\n };\n }\n\n /**\n * Invoke onInit callbacks synchronously\n * @param instance the service instance`\n */\n private invokeOnInitCallbacks(\n instance: NameServiceMapping[T],\n identifier: string\n ): void {\n const callbacks = this.onInitCallbacks.get(identifier);\n if (!callbacks) {\n return;\n }\n for (const callback of callbacks) {\n try {\n callback(instance, identifier);\n } catch {\n // ignore errors in the onInit callback\n }\n }\n }\n\n private getOrInitializeService({\n instanceIdentifier,\n options = {}\n }: {\n instanceIdentifier: string;\n options?: Record;\n }): NameServiceMapping[T] | null {\n let instance = this.instances.get(instanceIdentifier);\n if (!instance && this.component) {\n instance = this.component.instanceFactory(this.container, {\n instanceIdentifier: normalizeIdentifierForFactory(instanceIdentifier),\n options\n });\n this.instances.set(instanceIdentifier, instance);\n this.instancesOptions.set(instanceIdentifier, options);\n\n /**\n * Invoke onInit listeners.\n * Note this.component.onInstanceCreated is different, which is used by the component creator,\n * while onInit listeners are registered by consumers of the provider.\n */\n this.invokeOnInitCallbacks(instance, instanceIdentifier);\n\n /**\n * Order is important\n * onInstanceCreated() should be called after this.instances.set(instanceIdentifier, instance); which\n * makes `isInitialized()` return true.\n */\n if (this.component.onInstanceCreated) {\n try {\n this.component.onInstanceCreated(\n this.container,\n instanceIdentifier,\n instance\n );\n } catch {\n // ignore errors in the onInstanceCreatedCallback\n }\n }\n }\n\n return instance || null;\n }\n\n private normalizeInstanceIdentifier(\n identifier: string = DEFAULT_ENTRY_NAME\n ): string {\n if (this.component) {\n return this.component.multipleInstances ? identifier : DEFAULT_ENTRY_NAME;\n } else {\n return identifier; // assume multiple instances are supported before the component is provided.\n }\n }\n\n private shouldAutoInitialize(): boolean {\n return (\n !!this.component &&\n this.component.instantiationMode !== InstantiationMode.EXPLICIT\n );\n }\n}\n\n// undefined should be passed to the service factory for the default instance\nfunction normalizeIdentifierForFactory(identifier: string): string | undefined {\n return identifier === DEFAULT_ENTRY_NAME ? undefined : identifier;\n}\n\nfunction isComponentEager(component: Component): boolean {\n return component.instantiationMode === InstantiationMode.EAGER;\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Provider } from './provider';\nimport { Component } from './component';\nimport { Name } from './types';\n\n/**\n * ComponentContainer that provides Providers for service name T, e.g. `auth`, `auth-internal`\n */\nexport class ComponentContainer {\n private readonly providers = new Map>();\n\n constructor(private readonly name: string) {}\n\n /**\n *\n * @param component Component being added\n * @param overwrite When a component with the same name has already been registered,\n * if overwrite is true: overwrite the existing component with the new component and create a new\n * provider with the new component. It can be useful in tests where you want to use different mocks\n * for different tests.\n * if overwrite is false: throw an exception\n */\n addComponent(component: Component): void {\n const provider = this.getProvider(component.name);\n if (provider.isComponentSet()) {\n throw new Error(\n `Component ${component.name} has already been registered with ${this.name}`\n );\n }\n\n provider.setComponent(component);\n }\n\n addOrOverwriteComponent(component: Component): void {\n const provider = this.getProvider(component.name);\n if (provider.isComponentSet()) {\n // delete the existing provider from the container, so we can register the new component\n this.providers.delete(component.name);\n }\n\n this.addComponent(component);\n }\n\n /**\n * getProvider provides a type safe interface where it can only be called with a field name\n * present in NameServiceMapping interface.\n *\n * Firebase SDKs providing services should extend NameServiceMapping interface to register\n * themselves.\n */\n getProvider(name: T): Provider {\n if (this.providers.has(name)) {\n return this.providers.get(name) as unknown as Provider;\n }\n\n // create a Provider for a service that hasn't registered with Firebase\n const provider = new Provider(name, this);\n this.providers.set(name, provider as unknown as Provider);\n\n return provider as Provider;\n }\n\n getProviders(): Array> {\n return Array.from(this.providers.values());\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nexport type LogLevelString =\n | 'debug'\n | 'verbose'\n | 'info'\n | 'warn'\n | 'error'\n | 'silent';\n\nexport interface LogOptions {\n level: LogLevelString;\n}\n\nexport type LogCallback = (callbackParams: LogCallbackParams) => void;\n\nexport interface LogCallbackParams {\n level: LogLevelString;\n message: string;\n args: unknown[];\n type: string;\n}\n\n/**\n * A container for all of the Logger instances\n */\nexport const instances: Logger[] = [];\n\n/**\n * The JS SDK supports 5 log levels and also allows a user the ability to\n * silence the logs altogether.\n *\n * The order is a follows:\n * DEBUG < VERBOSE < INFO < WARN < ERROR\n *\n * All of the log types above the current log level will be captured (i.e. if\n * you set the log level to `INFO`, errors will still be logged, but `DEBUG` and\n * `VERBOSE` logs will not)\n */\nexport enum LogLevel {\n DEBUG,\n VERBOSE,\n INFO,\n WARN,\n ERROR,\n SILENT\n}\n\nconst levelStringToEnum: { [key in LogLevelString]: LogLevel } = {\n 'debug': LogLevel.DEBUG,\n 'verbose': LogLevel.VERBOSE,\n 'info': LogLevel.INFO,\n 'warn': LogLevel.WARN,\n 'error': LogLevel.ERROR,\n 'silent': LogLevel.SILENT\n};\n\n/**\n * The default log level\n */\nconst defaultLogLevel: LogLevel = LogLevel.INFO;\n\n/**\n * We allow users the ability to pass their own log handler. We will pass the\n * type of log, the current log level, and any other arguments passed (i.e. the\n * messages that the user wants to log) to this function.\n */\nexport type LogHandler = (\n loggerInstance: Logger,\n logType: LogLevel,\n ...args: unknown[]\n) => void;\n\n/**\n * By default, `console.debug` is not displayed in the developer console (in\n * chrome). To avoid forcing users to have to opt-in to these logs twice\n * (i.e. once for firebase, and once in the console), we are sending `DEBUG`\n * logs to the `console.log` function.\n */\nconst ConsoleMethod = {\n [LogLevel.DEBUG]: 'log',\n [LogLevel.VERBOSE]: 'log',\n [LogLevel.INFO]: 'info',\n [LogLevel.WARN]: 'warn',\n [LogLevel.ERROR]: 'error'\n};\n\n/**\n * The default log handler will forward DEBUG, VERBOSE, INFO, WARN, and ERROR\n * messages on to their corresponding console counterparts (if the log method\n * is supported by the current log level)\n */\nconst defaultLogHandler: LogHandler = (instance, logType, ...args): void => {\n if (logType < instance.logLevel) {\n return;\n }\n const now = new Date().toISOString();\n const method = ConsoleMethod[logType as keyof typeof ConsoleMethod];\n if (method) {\n console[method as 'log' | 'info' | 'warn' | 'error'](\n `[${now}] ${instance.name}:`,\n ...args\n );\n } else {\n throw new Error(\n `Attempted to log a message with an invalid logType (value: ${logType})`\n );\n }\n};\n\nexport class Logger {\n /**\n * Gives you an instance of a Logger to capture messages according to\n * Firebase's logging scheme.\n *\n * @param name The name that the logs will be associated with\n */\n constructor(public name: string) {\n /**\n * Capture the current instance for later use\n */\n instances.push(this);\n }\n\n /**\n * The log level of the given Logger instance.\n */\n private _logLevel = defaultLogLevel;\n\n get logLevel(): LogLevel {\n return this._logLevel;\n }\n\n set logLevel(val: LogLevel) {\n if (!(val in LogLevel)) {\n throw new TypeError(`Invalid value \"${val}\" assigned to \\`logLevel\\``);\n }\n this._logLevel = val;\n }\n\n // Workaround for setter/getter having to be the same type.\n setLogLevel(val: LogLevel | LogLevelString): void {\n this._logLevel = typeof val === 'string' ? levelStringToEnum[val] : val;\n }\n\n /**\n * The main (internal) log handler for the Logger instance.\n * Can be set to a new function in internal package code but not by user.\n */\n private _logHandler: LogHandler = defaultLogHandler;\n get logHandler(): LogHandler {\n return this._logHandler;\n }\n set logHandler(val: LogHandler) {\n if (typeof val !== 'function') {\n throw new TypeError('Value assigned to `logHandler` must be a function');\n }\n this._logHandler = val;\n }\n\n /**\n * The optional, additional, user-defined log handler for the Logger instance.\n */\n private _userLogHandler: LogHandler | null = null;\n get userLogHandler(): LogHandler | null {\n return this._userLogHandler;\n }\n set userLogHandler(val: LogHandler | null) {\n this._userLogHandler = val;\n }\n\n /**\n * The functions below are all based on the `console` interface\n */\n\n debug(...args: unknown[]): void {\n this._userLogHandler && this._userLogHandler(this, LogLevel.DEBUG, ...args);\n this._logHandler(this, LogLevel.DEBUG, ...args);\n }\n log(...args: unknown[]): void {\n this._userLogHandler &&\n this._userLogHandler(this, LogLevel.VERBOSE, ...args);\n this._logHandler(this, LogLevel.VERBOSE, ...args);\n }\n info(...args: unknown[]): void {\n this._userLogHandler && this._userLogHandler(this, LogLevel.INFO, ...args);\n this._logHandler(this, LogLevel.INFO, ...args);\n }\n warn(...args: unknown[]): void {\n this._userLogHandler && this._userLogHandler(this, LogLevel.WARN, ...args);\n this._logHandler(this, LogLevel.WARN, ...args);\n }\n error(...args: unknown[]): void {\n this._userLogHandler && this._userLogHandler(this, LogLevel.ERROR, ...args);\n this._logHandler(this, LogLevel.ERROR, ...args);\n }\n}\n\nexport function setLogLevel(level: LogLevelString | LogLevel): void {\n instances.forEach(inst => {\n inst.setLogLevel(level);\n });\n}\n\nexport function setUserLogHandler(\n logCallback: LogCallback | null,\n options?: LogOptions\n): void {\n for (const instance of instances) {\n let customLogLevel: LogLevel | null = null;\n if (options && options.level) {\n customLogLevel = levelStringToEnum[options.level];\n }\n if (logCallback === null) {\n instance.userLogHandler = null;\n } else {\n instance.userLogHandler = (\n instance: Logger,\n level: LogLevel,\n ...args: unknown[]\n ) => {\n const message = args\n .map(arg => {\n if (arg == null) {\n return null;\n } else if (typeof arg === 'string') {\n return arg;\n } else if (typeof arg === 'number' || typeof arg === 'boolean') {\n return arg.toString();\n } else if (arg instanceof Error) {\n return arg.message;\n } else {\n try {\n return JSON.stringify(arg);\n } catch (ignored) {\n return null;\n }\n }\n })\n .filter(arg => arg)\n .join(' ');\n if (level >= (customLogLevel ?? instance.logLevel)) {\n logCallback({\n level: LogLevel[level].toLowerCase() as LogLevelString,\n message,\n args,\n type: instance.name\n });\n }\n };\n }\n }\n}\n","const instanceOfAny = (object, constructors) => constructors.some((c) => object instanceof c);\n\nlet idbProxyableTypes;\nlet cursorAdvanceMethods;\n// This is a function to prevent it throwing up in node environments.\nfunction getIdbProxyableTypes() {\n return (idbProxyableTypes ||\n (idbProxyableTypes = [\n IDBDatabase,\n IDBObjectStore,\n IDBIndex,\n IDBCursor,\n IDBTransaction,\n ]));\n}\n// This is a function to prevent it throwing up in node environments.\nfunction getCursorAdvanceMethods() {\n return (cursorAdvanceMethods ||\n (cursorAdvanceMethods = [\n IDBCursor.prototype.advance,\n IDBCursor.prototype.continue,\n IDBCursor.prototype.continuePrimaryKey,\n ]));\n}\nconst cursorRequestMap = new WeakMap();\nconst transactionDoneMap = new WeakMap();\nconst transactionStoreNamesMap = new WeakMap();\nconst transformCache = new WeakMap();\nconst reverseTransformCache = new WeakMap();\nfunction promisifyRequest(request) {\n const promise = new Promise((resolve, reject) => {\n const unlisten = () => {\n request.removeEventListener('success', success);\n request.removeEventListener('error', error);\n };\n const success = () => {\n resolve(wrap(request.result));\n unlisten();\n };\n const error = () => {\n reject(request.error);\n unlisten();\n };\n request.addEventListener('success', success);\n request.addEventListener('error', error);\n });\n promise\n .then((value) => {\n // Since cursoring reuses the IDBRequest (*sigh*), we cache it for later retrieval\n // (see wrapFunction).\n if (value instanceof IDBCursor) {\n cursorRequestMap.set(value, request);\n }\n // Catching to avoid \"Uncaught Promise exceptions\"\n })\n .catch(() => { });\n // This mapping exists in reverseTransformCache but doesn't doesn't exist in transformCache. This\n // is because we create many promises from a single IDBRequest.\n reverseTransformCache.set(promise, request);\n return promise;\n}\nfunction cacheDonePromiseForTransaction(tx) {\n // Early bail if we've already created a done promise for this transaction.\n if (transactionDoneMap.has(tx))\n return;\n const done = new Promise((resolve, reject) => {\n const unlisten = () => {\n tx.removeEventListener('complete', complete);\n tx.removeEventListener('error', error);\n tx.removeEventListener('abort', error);\n };\n const complete = () => {\n resolve();\n unlisten();\n };\n const error = () => {\n reject(tx.error || new DOMException('AbortError', 'AbortError'));\n unlisten();\n };\n tx.addEventListener('complete', complete);\n tx.addEventListener('error', error);\n tx.addEventListener('abort', error);\n });\n // Cache it for later retrieval.\n transactionDoneMap.set(tx, done);\n}\nlet idbProxyTraps = {\n get(target, prop, receiver) {\n if (target instanceof IDBTransaction) {\n // Special handling for transaction.done.\n if (prop === 'done')\n return transactionDoneMap.get(target);\n // Polyfill for objectStoreNames because of Edge.\n if (prop === 'objectStoreNames') {\n return target.objectStoreNames || transactionStoreNamesMap.get(target);\n }\n // Make tx.store return the only store in the transaction, or undefined if there are many.\n if (prop === 'store') {\n return receiver.objectStoreNames[1]\n ? undefined\n : receiver.objectStore(receiver.objectStoreNames[0]);\n }\n }\n // Else transform whatever we get back.\n return wrap(target[prop]);\n },\n set(target, prop, value) {\n target[prop] = value;\n return true;\n },\n has(target, prop) {\n if (target instanceof IDBTransaction &&\n (prop === 'done' || prop === 'store')) {\n return true;\n }\n return prop in target;\n },\n};\nfunction replaceTraps(callback) {\n idbProxyTraps = callback(idbProxyTraps);\n}\nfunction wrapFunction(func) {\n // Due to expected object equality (which is enforced by the caching in `wrap`), we\n // only create one new func per func.\n // Edge doesn't support objectStoreNames (booo), so we polyfill it here.\n if (func === IDBDatabase.prototype.transaction &&\n !('objectStoreNames' in IDBTransaction.prototype)) {\n return function (storeNames, ...args) {\n const tx = func.call(unwrap(this), storeNames, ...args);\n transactionStoreNamesMap.set(tx, storeNames.sort ? storeNames.sort() : [storeNames]);\n return wrap(tx);\n };\n }\n // Cursor methods are special, as the behaviour is a little more different to standard IDB. In\n // IDB, you advance the cursor and wait for a new 'success' on the IDBRequest that gave you the\n // cursor. It's kinda like a promise that can resolve with many values. That doesn't make sense\n // with real promises, so each advance methods returns a new promise for the cursor object, or\n // undefined if the end of the cursor has been reached.\n if (getCursorAdvanceMethods().includes(func)) {\n return function (...args) {\n // Calling the original function with the proxy as 'this' causes ILLEGAL INVOCATION, so we use\n // the original object.\n func.apply(unwrap(this), args);\n return wrap(cursorRequestMap.get(this));\n };\n }\n return function (...args) {\n // Calling the original function with the proxy as 'this' causes ILLEGAL INVOCATION, so we use\n // the original object.\n return wrap(func.apply(unwrap(this), args));\n };\n}\nfunction transformCachableValue(value) {\n if (typeof value === 'function')\n return wrapFunction(value);\n // This doesn't return, it just creates a 'done' promise for the transaction,\n // which is later returned for transaction.done (see idbObjectHandler).\n if (value instanceof IDBTransaction)\n cacheDonePromiseForTransaction(value);\n if (instanceOfAny(value, getIdbProxyableTypes()))\n return new Proxy(value, idbProxyTraps);\n // Return the same value back if we're not going to transform it.\n return value;\n}\nfunction wrap(value) {\n // We sometimes generate multiple promises from a single IDBRequest (eg when cursoring), because\n // IDB is weird and a single IDBRequest can yield many responses, so these can't be cached.\n if (value instanceof IDBRequest)\n return promisifyRequest(value);\n // If we've already transformed this value before, reuse the transformed value.\n // This is faster, but it also provides object equality.\n if (transformCache.has(value))\n return transformCache.get(value);\n const newValue = transformCachableValue(value);\n // Not all types are transformed.\n // These may be primitive types, so they can't be WeakMap keys.\n if (newValue !== value) {\n transformCache.set(value, newValue);\n reverseTransformCache.set(newValue, value);\n }\n return newValue;\n}\nconst unwrap = (value) => reverseTransformCache.get(value);\n\nexport { reverseTransformCache as a, instanceOfAny as i, replaceTraps as r, unwrap as u, wrap as w };\n","import { w as wrap, r as replaceTraps } from './wrap-idb-value.js';\nexport { u as unwrap, w as wrap } from './wrap-idb-value.js';\n\n/**\n * Open a database.\n *\n * @param name Name of the database.\n * @param version Schema version.\n * @param callbacks Additional callbacks.\n */\nfunction openDB(name, version, { blocked, upgrade, blocking, terminated } = {}) {\n const request = indexedDB.open(name, version);\n const openPromise = wrap(request);\n if (upgrade) {\n request.addEventListener('upgradeneeded', (event) => {\n upgrade(wrap(request.result), event.oldVersion, event.newVersion, wrap(request.transaction), event);\n });\n }\n if (blocked) {\n request.addEventListener('blocked', (event) => blocked(\n // Casting due to https://github.com/microsoft/TypeScript-DOM-lib-generator/pull/1405\n event.oldVersion, event.newVersion, event));\n }\n openPromise\n .then((db) => {\n if (terminated)\n db.addEventListener('close', () => terminated());\n if (blocking) {\n db.addEventListener('versionchange', (event) => blocking(event.oldVersion, event.newVersion, event));\n }\n })\n .catch(() => { });\n return openPromise;\n}\n/**\n * Delete a database.\n *\n * @param name Name of the database.\n */\nfunction deleteDB(name, { blocked } = {}) {\n const request = indexedDB.deleteDatabase(name);\n if (blocked) {\n request.addEventListener('blocked', (event) => blocked(\n // Casting due to https://github.com/microsoft/TypeScript-DOM-lib-generator/pull/1405\n event.oldVersion, event));\n }\n return wrap(request).then(() => undefined);\n}\n\nconst readMethods = ['get', 'getKey', 'getAll', 'getAllKeys', 'count'];\nconst writeMethods = ['put', 'add', 'delete', 'clear'];\nconst cachedMethods = new Map();\nfunction getMethod(target, prop) {\n if (!(target instanceof IDBDatabase &&\n !(prop in target) &&\n typeof prop === 'string')) {\n return;\n }\n if (cachedMethods.get(prop))\n return cachedMethods.get(prop);\n const targetFuncName = prop.replace(/FromIndex$/, '');\n const useIndex = prop !== targetFuncName;\n const isWrite = writeMethods.includes(targetFuncName);\n if (\n // Bail if the target doesn't exist on the target. Eg, getAll isn't in Edge.\n !(targetFuncName in (useIndex ? IDBIndex : IDBObjectStore).prototype) ||\n !(isWrite || readMethods.includes(targetFuncName))) {\n return;\n }\n const method = async function (storeName, ...args) {\n // isWrite ? 'readwrite' : undefined gzipps better, but fails in Edge :(\n const tx = this.transaction(storeName, isWrite ? 'readwrite' : 'readonly');\n let target = tx.store;\n if (useIndex)\n target = target.index(args.shift());\n // Must reject if op rejects.\n // If it's a write operation, must reject if tx.done rejects.\n // Must reject with op rejection first.\n // Must resolve with op value.\n // Must handle both promises (no unhandled rejections)\n return (await Promise.all([\n target[targetFuncName](...args),\n isWrite && tx.done,\n ]))[0];\n };\n cachedMethods.set(prop, method);\n return method;\n}\nreplaceTraps((oldTraps) => ({\n ...oldTraps,\n get: (target, prop, receiver) => getMethod(target, prop) || oldTraps.get(target, prop, receiver),\n has: (target, prop) => !!getMethod(target, prop) || oldTraps.has(target, prop),\n}));\n\nexport { deleteDB, openDB };\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n ComponentContainer,\n ComponentType,\n Provider,\n Name\n} from '@firebase/component';\nimport { PlatformLoggerService, VersionService } from './types';\n\nexport class PlatformLoggerServiceImpl implements PlatformLoggerService {\n constructor(private readonly container: ComponentContainer) {}\n // In initial implementation, this will be called by installations on\n // auth token refresh, and installations will send this string.\n getPlatformInfoString(): string {\n const providers = this.container.getProviders();\n // Loop through providers and get library/version pairs from any that are\n // version components.\n return providers\n .map(provider => {\n if (isVersionServiceProvider(provider)) {\n const service = provider.getImmediate() as VersionService;\n return `${service.library}/${service.version}`;\n } else {\n return null;\n }\n })\n .filter(logString => logString)\n .join(' ');\n }\n}\n/**\n *\n * @param provider check if this provider provides a VersionService\n *\n * NOTE: Using Provider<'app-version'> is a hack to indicate that the provider\n * provides VersionService. The provider is not necessarily a 'app-version'\n * provider.\n */\nfunction isVersionServiceProvider(provider: Provider): boolean {\n const component = provider.getComponent();\n return component?.type === ComponentType.VERSION;\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Logger } from '@firebase/logger';\n\nexport const logger = new Logger('@firebase/app');\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { name as appName } from '../package.json';\nimport { name as appCompatName } from '../../app-compat/package.json';\nimport { name as analyticsCompatName } from '../../../packages/analytics-compat/package.json';\nimport { name as analyticsName } from '../../../packages/analytics/package.json';\nimport { name as appCheckCompatName } from '../../../packages/app-check-compat/package.json';\nimport { name as appCheckName } from '../../../packages/app-check/package.json';\nimport { name as authName } from '../../../packages/auth/package.json';\nimport { name as authCompatName } from '../../../packages/auth-compat/package.json';\nimport { name as databaseName } from '../../../packages/database/package.json';\nimport { name as databaseCompatName } from '../../../packages/database-compat/package.json';\nimport { name as functionsName } from '../../../packages/functions/package.json';\nimport { name as functionsCompatName } from '../../../packages/functions-compat/package.json';\nimport { name as installationsName } from '../../../packages/installations/package.json';\nimport { name as installationsCompatName } from '../../../packages/installations-compat/package.json';\nimport { name as messagingName } from '../../../packages/messaging/package.json';\nimport { name as messagingCompatName } from '../../../packages/messaging-compat/package.json';\nimport { name as performanceName } from '../../../packages/performance/package.json';\nimport { name as performanceCompatName } from '../../../packages/performance-compat/package.json';\nimport { name as remoteConfigName } from '../../../packages/remote-config/package.json';\nimport { name as remoteConfigCompatName } from '../../../packages/remote-config-compat/package.json';\nimport { name as storageName } from '../../../packages/storage/package.json';\nimport { name as storageCompatName } from '../../../packages/storage-compat/package.json';\nimport { name as firestoreName } from '../../../packages/firestore/package.json';\nimport { name as firestoreCompatName } from '../../../packages/firestore-compat/package.json';\nimport { name as packageName } from '../../../packages/firebase/package.json';\n\n/**\n * The default app name\n *\n * @internal\n */\nexport const DEFAULT_ENTRY_NAME = '[DEFAULT]';\n\nexport const PLATFORM_LOG_STRING = {\n [appName]: 'fire-core',\n [appCompatName]: 'fire-core-compat',\n [analyticsName]: 'fire-analytics',\n [analyticsCompatName]: 'fire-analytics-compat',\n [appCheckName]: 'fire-app-check',\n [appCheckCompatName]: 'fire-app-check-compat',\n [authName]: 'fire-auth',\n [authCompatName]: 'fire-auth-compat',\n [databaseName]: 'fire-rtdb',\n [databaseCompatName]: 'fire-rtdb-compat',\n [functionsName]: 'fire-fn',\n [functionsCompatName]: 'fire-fn-compat',\n [installationsName]: 'fire-iid',\n [installationsCompatName]: 'fire-iid-compat',\n [messagingName]: 'fire-fcm',\n [messagingCompatName]: 'fire-fcm-compat',\n [performanceName]: 'fire-perf',\n [performanceCompatName]: 'fire-perf-compat',\n [remoteConfigName]: 'fire-rc',\n [remoteConfigCompatName]: 'fire-rc-compat',\n [storageName]: 'fire-gcs',\n [storageCompatName]: 'fire-gcs-compat',\n [firestoreName]: 'fire-fst',\n [firestoreCompatName]: 'fire-fst-compat',\n 'fire-js': 'fire-js', // Platform identifier for JS SDK.\n [packageName]: 'fire-js-all'\n} as const;\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseApp } from './public-types';\nimport { Component, Provider, Name } from '@firebase/component';\nimport { logger } from './logger';\nimport { DEFAULT_ENTRY_NAME } from './constants';\nimport { FirebaseAppImpl } from './firebaseApp';\n\n/**\n * @internal\n */\nexport const _apps = new Map();\n\n/**\n * Registered components.\n *\n * @internal\n */\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\nexport const _components = new Map>();\n\n/**\n * @param component - the component being added to this app's container\n *\n * @internal\n */\nexport function _addComponent(\n app: FirebaseApp,\n component: Component\n): void {\n try {\n (app as FirebaseAppImpl).container.addComponent(component);\n } catch (e) {\n logger.debug(\n `Component ${component.name} failed to register with FirebaseApp ${app.name}`,\n e\n );\n }\n}\n\n/**\n *\n * @internal\n */\nexport function _addOrOverwriteComponent(\n app: FirebaseApp,\n component: Component\n): void {\n (app as FirebaseAppImpl).container.addOrOverwriteComponent(component);\n}\n\n/**\n *\n * @param component - the component to register\n * @returns whether or not the component is registered successfully\n *\n * @internal\n */\nexport function _registerComponent(\n component: Component\n): boolean {\n const componentName = component.name;\n if (_components.has(componentName)) {\n logger.debug(\n `There were multiple attempts to register component ${componentName}.`\n );\n\n return false;\n }\n\n _components.set(componentName, component);\n\n // add the component to existing app instances\n for (const app of _apps.values()) {\n _addComponent(app as FirebaseAppImpl, component);\n }\n\n return true;\n}\n\n/**\n *\n * @param app - FirebaseApp instance\n * @param name - service name\n *\n * @returns the provider for the service with the matching name\n *\n * @internal\n */\nexport function _getProvider(\n app: FirebaseApp,\n name: T\n): Provider {\n const heartbeatController = (app as FirebaseAppImpl).container\n .getProvider('heartbeat')\n .getImmediate({ optional: true });\n if (heartbeatController) {\n void heartbeatController.triggerHeartbeat();\n }\n return (app as FirebaseAppImpl).container.getProvider(name);\n}\n\n/**\n *\n * @param app - FirebaseApp instance\n * @param name - service name\n * @param instanceIdentifier - service instance identifier in case the service supports multiple instances\n *\n * @internal\n */\nexport function _removeServiceInstance(\n app: FirebaseApp,\n name: T,\n instanceIdentifier: string = DEFAULT_ENTRY_NAME\n): void {\n _getProvider(app, name).clearInstance(instanceIdentifier);\n}\n\n/**\n * Test only\n *\n * @internal\n */\nexport function _clearComponents(): void {\n _components.clear();\n}\n\n/**\n * Exported in order to be used in app-compat package\n */\nexport { DEFAULT_ENTRY_NAME as _DEFAULT_ENTRY_NAME };\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { ErrorFactory, ErrorMap } from '@firebase/util';\n\nexport const enum AppError {\n NO_APP = 'no-app',\n BAD_APP_NAME = 'bad-app-name',\n DUPLICATE_APP = 'duplicate-app',\n APP_DELETED = 'app-deleted',\n NO_OPTIONS = 'no-options',\n INVALID_APP_ARGUMENT = 'invalid-app-argument',\n INVALID_LOG_ARGUMENT = 'invalid-log-argument',\n IDB_OPEN = 'idb-open',\n IDB_GET = 'idb-get',\n IDB_WRITE = 'idb-set',\n IDB_DELETE = 'idb-delete'\n}\n\nconst ERRORS: ErrorMap = {\n [AppError.NO_APP]:\n \"No Firebase App '{$appName}' has been created - \" +\n 'call initializeApp() first',\n [AppError.BAD_APP_NAME]: \"Illegal App name: '{$appName}\",\n [AppError.DUPLICATE_APP]:\n \"Firebase App named '{$appName}' already exists with different options or config\",\n [AppError.APP_DELETED]: \"Firebase App named '{$appName}' already deleted\",\n [AppError.NO_OPTIONS]:\n 'Need to provide options, when not being deployed to hosting via source.',\n [AppError.INVALID_APP_ARGUMENT]:\n 'firebase.{$appName}() takes either no argument or a ' +\n 'Firebase App instance.',\n [AppError.INVALID_LOG_ARGUMENT]:\n 'First argument to `onLog` must be null or a function.',\n [AppError.IDB_OPEN]:\n 'Error thrown when opening IndexedDB. Original error: {$originalErrorMessage}.',\n [AppError.IDB_GET]:\n 'Error thrown when reading from IndexedDB. Original error: {$originalErrorMessage}.',\n [AppError.IDB_WRITE]:\n 'Error thrown when writing to IndexedDB. Original error: {$originalErrorMessage}.',\n [AppError.IDB_DELETE]:\n 'Error thrown when deleting from IndexedDB. Original error: {$originalErrorMessage}.'\n};\n\ninterface ErrorParams {\n [AppError.NO_APP]: { appName: string };\n [AppError.BAD_APP_NAME]: { appName: string };\n [AppError.DUPLICATE_APP]: { appName: string };\n [AppError.APP_DELETED]: { appName: string };\n [AppError.INVALID_APP_ARGUMENT]: { appName: string };\n [AppError.IDB_OPEN]: { originalErrorMessage?: string };\n [AppError.IDB_GET]: { originalErrorMessage?: string };\n [AppError.IDB_WRITE]: { originalErrorMessage?: string };\n [AppError.IDB_DELETE]: { originalErrorMessage?: string };\n}\n\nexport const ERROR_FACTORY = new ErrorFactory(\n 'app',\n 'Firebase',\n ERRORS\n);\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n FirebaseApp,\n FirebaseOptions,\n FirebaseAppSettings\n} from './public-types';\nimport {\n ComponentContainer,\n Component,\n ComponentType\n} from '@firebase/component';\nimport { ERROR_FACTORY, AppError } from './errors';\n\nexport class FirebaseAppImpl implements FirebaseApp {\n private readonly _options: FirebaseOptions;\n private readonly _name: string;\n /**\n * Original config values passed in as a constructor parameter.\n * It is only used to compare with another config object to support idempotent initializeApp().\n *\n * Updating automaticDataCollectionEnabled on the App instance will not change its value in _config.\n */\n private readonly _config: Required;\n private _automaticDataCollectionEnabled: boolean;\n private _isDeleted = false;\n private readonly _container: ComponentContainer;\n\n constructor(\n options: FirebaseOptions,\n config: Required,\n container: ComponentContainer\n ) {\n this._options = { ...options };\n this._config = { ...config };\n this._name = config.name;\n this._automaticDataCollectionEnabled =\n config.automaticDataCollectionEnabled;\n this._container = container;\n this.container.addComponent(\n new Component('app', () => this, ComponentType.PUBLIC)\n );\n }\n\n get automaticDataCollectionEnabled(): boolean {\n this.checkDestroyed();\n return this._automaticDataCollectionEnabled;\n }\n\n set automaticDataCollectionEnabled(val: boolean) {\n this.checkDestroyed();\n this._automaticDataCollectionEnabled = val;\n }\n\n get name(): string {\n this.checkDestroyed();\n return this._name;\n }\n\n get options(): FirebaseOptions {\n this.checkDestroyed();\n return this._options;\n }\n\n get config(): Required {\n this.checkDestroyed();\n return this._config;\n }\n\n get container(): ComponentContainer {\n return this._container;\n }\n\n get isDeleted(): boolean {\n return this._isDeleted;\n }\n\n set isDeleted(val: boolean) {\n this._isDeleted = val;\n }\n\n /**\n * This function will throw an Error if the App has already been deleted -\n * use before performing API actions on the App.\n */\n private checkDestroyed(): void {\n if (this.isDeleted) {\n throw ERROR_FACTORY.create(AppError.APP_DELETED, { appName: this._name });\n }\n }\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n FirebaseApp,\n FirebaseOptions,\n FirebaseAppSettings\n} from './public-types';\nimport { DEFAULT_ENTRY_NAME, PLATFORM_LOG_STRING } from './constants';\nimport { ERROR_FACTORY, AppError } from './errors';\nimport {\n ComponentContainer,\n Component,\n Name,\n ComponentType\n} from '@firebase/component';\nimport { version } from '../../firebase/package.json';\nimport { FirebaseAppImpl } from './firebaseApp';\nimport { _apps, _components, _registerComponent } from './internal';\nimport { logger } from './logger';\nimport {\n LogLevelString,\n setLogLevel as setLogLevelImpl,\n LogCallback,\n LogOptions,\n setUserLogHandler\n} from '@firebase/logger';\nimport { deepEqual, getDefaultAppConfig } from '@firebase/util';\n\nexport { FirebaseError } from '@firebase/util';\n\n/**\n * The current SDK version.\n *\n * @public\n */\nexport const SDK_VERSION = version;\n\n/**\n * Creates and initializes a {@link @firebase/app#FirebaseApp} instance.\n *\n * See\n * {@link\n * https://firebase.google.com/docs/web/setup#add_firebase_to_your_app\n * | Add Firebase to your app} and\n * {@link\n * https://firebase.google.com/docs/web/setup#multiple-projects\n * | Initialize multiple projects} for detailed documentation.\n *\n * @example\n * ```javascript\n *\n * // Initialize default app\n * // Retrieve your own options values by adding a web app on\n * // https://console.firebase.google.com\n * initializeApp({\n * apiKey: \"AIza....\", // Auth / General Use\n * authDomain: \"YOUR_APP.firebaseapp.com\", // Auth with popup/redirect\n * databaseURL: \"https://YOUR_APP.firebaseio.com\", // Realtime Database\n * storageBucket: \"YOUR_APP.appspot.com\", // Storage\n * messagingSenderId: \"123456789\" // Cloud Messaging\n * });\n * ```\n *\n * @example\n * ```javascript\n *\n * // Initialize another app\n * const otherApp = initializeApp({\n * databaseURL: \"https://.firebaseio.com\",\n * storageBucket: \".appspot.com\"\n * }, \"otherApp\");\n * ```\n *\n * @param options - Options to configure the app's services.\n * @param name - Optional name of the app to initialize. If no name\n * is provided, the default is `\"[DEFAULT]\"`.\n *\n * @returns The initialized app.\n *\n * @public\n */\nexport function initializeApp(\n options: FirebaseOptions,\n name?: string\n): FirebaseApp;\n/**\n * Creates and initializes a FirebaseApp instance.\n *\n * @param options - Options to configure the app's services.\n * @param config - FirebaseApp Configuration\n *\n * @public\n */\nexport function initializeApp(\n options: FirebaseOptions,\n config?: FirebaseAppSettings\n): FirebaseApp;\n/**\n * Creates and initializes a FirebaseApp instance.\n *\n * @public\n */\nexport function initializeApp(): FirebaseApp;\nexport function initializeApp(\n _options?: FirebaseOptions,\n rawConfig = {}\n): FirebaseApp {\n let options = _options;\n\n if (typeof rawConfig !== 'object') {\n const name = rawConfig;\n rawConfig = { name };\n }\n\n const config: Required = {\n name: DEFAULT_ENTRY_NAME,\n automaticDataCollectionEnabled: false,\n ...rawConfig\n };\n const name = config.name;\n\n if (typeof name !== 'string' || !name) {\n throw ERROR_FACTORY.create(AppError.BAD_APP_NAME, {\n appName: String(name)\n });\n }\n\n options ||= getDefaultAppConfig();\n\n if (!options) {\n throw ERROR_FACTORY.create(AppError.NO_OPTIONS);\n }\n\n const existingApp = _apps.get(name) as FirebaseAppImpl;\n if (existingApp) {\n // return the existing app if options and config deep equal the ones in the existing app.\n if (\n deepEqual(options, existingApp.options) &&\n deepEqual(config, existingApp.config)\n ) {\n return existingApp;\n } else {\n throw ERROR_FACTORY.create(AppError.DUPLICATE_APP, { appName: name });\n }\n }\n\n const container = new ComponentContainer(name);\n for (const component of _components.values()) {\n container.addComponent(component);\n }\n\n const newApp = new FirebaseAppImpl(options, config, container);\n\n _apps.set(name, newApp);\n\n return newApp;\n}\n\n/**\n * Retrieves a {@link @firebase/app#FirebaseApp} instance.\n *\n * When called with no arguments, the default app is returned. When an app name\n * is provided, the app corresponding to that name is returned.\n *\n * An exception is thrown if the app being retrieved has not yet been\n * initialized.\n *\n * @example\n * ```javascript\n * // Return the default app\n * const app = getApp();\n * ```\n *\n * @example\n * ```javascript\n * // Return a named app\n * const otherApp = getApp(\"otherApp\");\n * ```\n *\n * @param name - Optional name of the app to return. If no name is\n * provided, the default is `\"[DEFAULT]\"`.\n *\n * @returns The app corresponding to the provided app name.\n * If no app name is provided, the default app is returned.\n *\n * @public\n */\nexport function getApp(name: string = DEFAULT_ENTRY_NAME): FirebaseApp {\n const app = _apps.get(name);\n if (!app && name === DEFAULT_ENTRY_NAME && getDefaultAppConfig()) {\n return initializeApp();\n }\n if (!app) {\n throw ERROR_FACTORY.create(AppError.NO_APP, { appName: name });\n }\n\n return app;\n}\n\n/**\n * A (read-only) array of all initialized apps.\n * @public\n */\nexport function getApps(): FirebaseApp[] {\n return Array.from(_apps.values());\n}\n\n/**\n * Renders this app unusable and frees the resources of all associated\n * services.\n *\n * @example\n * ```javascript\n * deleteApp(app)\n * .then(function() {\n * console.log(\"App deleted successfully\");\n * })\n * .catch(function(error) {\n * console.log(\"Error deleting app:\", error);\n * });\n * ```\n *\n * @public\n */\nexport async function deleteApp(app: FirebaseApp): Promise {\n const name = app.name;\n if (_apps.has(name)) {\n _apps.delete(name);\n await Promise.all(\n (app as FirebaseAppImpl).container\n .getProviders()\n .map(provider => provider.delete())\n );\n (app as FirebaseAppImpl).isDeleted = true;\n }\n}\n\n/**\n * Registers a library's name and version for platform logging purposes.\n * @param library - Name of 1p or 3p library (e.g. firestore, angularfire)\n * @param version - Current version of that library.\n * @param variant - Bundle variant, e.g., node, rn, etc.\n *\n * @public\n */\nexport function registerVersion(\n libraryKeyOrName: string,\n version: string,\n variant?: string\n): void {\n // TODO: We can use this check to whitelist strings when/if we set up\n // a good whitelist system.\n let library = PLATFORM_LOG_STRING[libraryKeyOrName] ?? libraryKeyOrName;\n if (variant) {\n library += `-${variant}`;\n }\n const libraryMismatch = library.match(/\\s|\\//);\n const versionMismatch = version.match(/\\s|\\//);\n if (libraryMismatch || versionMismatch) {\n const warning = [\n `Unable to register library \"${library}\" with version \"${version}\":`\n ];\n if (libraryMismatch) {\n warning.push(\n `library name \"${library}\" contains illegal characters (whitespace or \"/\")`\n );\n }\n if (libraryMismatch && versionMismatch) {\n warning.push('and');\n }\n if (versionMismatch) {\n warning.push(\n `version name \"${version}\" contains illegal characters (whitespace or \"/\")`\n );\n }\n logger.warn(warning.join(' '));\n return;\n }\n _registerComponent(\n new Component(\n `${library}-version` as Name,\n () => ({ library, version }),\n ComponentType.VERSION\n )\n );\n}\n\n/**\n * Sets log handler for all Firebase SDKs.\n * @param logCallback - An optional custom log handler that executes user code whenever\n * the Firebase SDK makes a logging call.\n *\n * @public\n */\nexport function onLog(\n logCallback: LogCallback | null,\n options?: LogOptions\n): void {\n if (logCallback !== null && typeof logCallback !== 'function') {\n throw ERROR_FACTORY.create(AppError.INVALID_LOG_ARGUMENT);\n }\n setUserLogHandler(logCallback, options);\n}\n\n/**\n * Sets log level for all Firebase SDKs.\n *\n * All of the log types above the current log level are captured (i.e. if\n * you set the log level to `info`, errors are logged, but `debug` and\n * `verbose` logs are not).\n *\n * @public\n */\nexport function setLogLevel(logLevel: LogLevelString): void {\n setLogLevelImpl(logLevel);\n}\n","/**\n * @license\n * Copyright 2021 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseError } from '@firebase/util';\nimport { DBSchema, openDB, IDBPDatabase } from 'idb';\nimport { AppError, ERROR_FACTORY } from './errors';\nimport { FirebaseApp } from './public-types';\nimport { HeartbeatsInIndexedDB } from './types';\nimport { logger } from './logger';\n\nconst DB_NAME = 'firebase-heartbeat-database';\nconst DB_VERSION = 1;\nconst STORE_NAME = 'firebase-heartbeat-store';\n\ninterface AppDB extends DBSchema {\n 'firebase-heartbeat-store': {\n key: string;\n value: HeartbeatsInIndexedDB;\n };\n}\n\nlet dbPromise: Promise> | null = null;\nfunction getDbPromise(): Promise> {\n if (!dbPromise) {\n dbPromise = openDB(DB_NAME, DB_VERSION, {\n upgrade: (db, oldVersion) => {\n // We don't use 'break' in this switch statement, the fall-through\n // behavior is what we want, because if there are multiple versions between\n // the old version and the current version, we want ALL the migrations\n // that correspond to those versions to run, not only the last one.\n // eslint-disable-next-line default-case\n switch (oldVersion) {\n case 0:\n db.createObjectStore(STORE_NAME);\n }\n }\n }).catch(e => {\n throw ERROR_FACTORY.create(AppError.IDB_OPEN, {\n originalErrorMessage: e.message\n });\n });\n }\n return dbPromise;\n}\n\nexport async function readHeartbeatsFromIndexedDB(\n app: FirebaseApp\n): Promise {\n try {\n const db = await getDbPromise();\n const result = await db\n .transaction(STORE_NAME)\n .objectStore(STORE_NAME)\n .get(computeKey(app));\n return result;\n } catch (e) {\n if (e instanceof FirebaseError) {\n logger.warn(e.message);\n } else {\n const idbGetError = ERROR_FACTORY.create(AppError.IDB_GET, {\n originalErrorMessage: (e as Error)?.message\n });\n logger.warn(idbGetError.message);\n }\n }\n}\n\nexport async function writeHeartbeatsToIndexedDB(\n app: FirebaseApp,\n heartbeatObject: HeartbeatsInIndexedDB\n): Promise {\n try {\n const db = await getDbPromise();\n const tx = db.transaction(STORE_NAME, 'readwrite');\n const objectStore = tx.objectStore(STORE_NAME);\n await objectStore.put(heartbeatObject, computeKey(app));\n await tx.done;\n } catch (e) {\n if (e instanceof FirebaseError) {\n logger.warn(e.message);\n } else {\n const idbGetError = ERROR_FACTORY.create(AppError.IDB_WRITE, {\n originalErrorMessage: (e as Error)?.message\n });\n logger.warn(idbGetError.message);\n }\n }\n}\n\nfunction computeKey(app: FirebaseApp): string {\n return `${app.name}!${app.options.appId}`;\n}\n","/**\n * @license\n * Copyright 2021 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { ComponentContainer } from '@firebase/component';\nimport {\n base64urlEncodeWithoutPadding,\n isIndexedDBAvailable,\n validateIndexedDBOpenable\n} from '@firebase/util';\nimport {\n readHeartbeatsFromIndexedDB,\n writeHeartbeatsToIndexedDB\n} from './indexeddb';\nimport { FirebaseApp } from './public-types';\nimport {\n HeartbeatsByUserAgent,\n HeartbeatService,\n HeartbeatsInIndexedDB,\n HeartbeatStorage,\n SingleDateHeartbeat\n} from './types';\n\nconst MAX_HEADER_BYTES = 1024;\n// 30 days\nconst STORED_HEARTBEAT_RETENTION_MAX_MILLIS = 30 * 24 * 60 * 60 * 1000;\n\nexport class HeartbeatServiceImpl implements HeartbeatService {\n /**\n * The persistence layer for heartbeats\n * Leave public for easier testing.\n */\n _storage: HeartbeatStorageImpl;\n\n /**\n * In-memory cache for heartbeats, used by getHeartbeatsHeader() to generate\n * the header string.\n * Stores one record per date. This will be consolidated into the standard\n * format of one record per user agent string before being sent as a header.\n * Populated from indexedDB when the controller is instantiated and should\n * be kept in sync with indexedDB.\n * Leave public for easier testing.\n */\n _heartbeatsCache: HeartbeatsInIndexedDB | null = null;\n\n /**\n * the initialization promise for populating heartbeatCache.\n * If getHeartbeatsHeader() is called before the promise resolves\n * (hearbeatsCache == null), it should wait for this promise\n * Leave public for easier testing.\n */\n _heartbeatsCachePromise: Promise;\n constructor(private readonly container: ComponentContainer) {\n const app = this.container.getProvider('app').getImmediate();\n this._storage = new HeartbeatStorageImpl(app);\n this._heartbeatsCachePromise = this._storage.read().then(result => {\n this._heartbeatsCache = result;\n return result;\n });\n }\n\n /**\n * Called to report a heartbeat. The function will generate\n * a HeartbeatsByUserAgent object, update heartbeatsCache, and persist it\n * to IndexedDB.\n * Note that we only store one heartbeat per day. So if a heartbeat for today is\n * already logged, subsequent calls to this function in the same day will be ignored.\n */\n async triggerHeartbeat(): Promise {\n const platformLogger = this.container\n .getProvider('platform-logger')\n .getImmediate();\n\n // This is the \"Firebase user agent\" string from the platform logger\n // service, not the browser user agent.\n const agent = platformLogger.getPlatformInfoString();\n const date = getUTCDateString();\n if (this._heartbeatsCache?.heartbeats == null) {\n this._heartbeatsCache = await this._heartbeatsCachePromise;\n }\n // Do not store a heartbeat if one is already stored for this day\n // or if a header has already been sent today.\n if (\n this._heartbeatsCache.lastSentHeartbeatDate === date ||\n this._heartbeatsCache.heartbeats.some(\n singleDateHeartbeat => singleDateHeartbeat.date === date\n )\n ) {\n return;\n } else {\n // There is no entry for this date. Create one.\n this._heartbeatsCache.heartbeats.push({ date, agent });\n }\n // Remove entries older than 30 days.\n this._heartbeatsCache.heartbeats = this._heartbeatsCache.heartbeats.filter(\n singleDateHeartbeat => {\n const hbTimestamp = new Date(singleDateHeartbeat.date).valueOf();\n const now = Date.now();\n return now - hbTimestamp <= STORED_HEARTBEAT_RETENTION_MAX_MILLIS;\n }\n );\n return this._storage.overwrite(this._heartbeatsCache);\n }\n\n /**\n * Returns a base64 encoded string which can be attached to the heartbeat-specific header directly.\n * It also clears all heartbeats from memory as well as in IndexedDB.\n *\n * NOTE: Consuming product SDKs should not send the header if this method\n * returns an empty string.\n */\n async getHeartbeatsHeader(): Promise {\n if (this._heartbeatsCache === null) {\n await this._heartbeatsCachePromise;\n }\n // If it's still null or the array is empty, there is no data to send.\n if (\n this._heartbeatsCache?.heartbeats == null ||\n this._heartbeatsCache.heartbeats.length === 0\n ) {\n return '';\n }\n const date = getUTCDateString();\n // Extract as many heartbeats from the cache as will fit under the size limit.\n const { heartbeatsToSend, unsentEntries } = extractHeartbeatsForHeader(\n this._heartbeatsCache.heartbeats\n );\n const headerString = base64urlEncodeWithoutPadding(\n JSON.stringify({ version: 2, heartbeats: heartbeatsToSend })\n );\n // Store last sent date to prevent another being logged/sent for the same day.\n this._heartbeatsCache.lastSentHeartbeatDate = date;\n if (unsentEntries.length > 0) {\n // Store any unsent entries if they exist.\n this._heartbeatsCache.heartbeats = unsentEntries;\n // This seems more likely than emptying the array (below) to lead to some odd state\n // since the cache isn't empty and this will be called again on the next request,\n // and is probably safest if we await it.\n await this._storage.overwrite(this._heartbeatsCache);\n } else {\n this._heartbeatsCache.heartbeats = [];\n // Do not wait for this, to reduce latency.\n void this._storage.overwrite(this._heartbeatsCache);\n }\n return headerString;\n }\n}\n\nfunction getUTCDateString(): string {\n const today = new Date();\n // Returns date format 'YYYY-MM-DD'\n return today.toISOString().substring(0, 10);\n}\n\nexport function extractHeartbeatsForHeader(\n heartbeatsCache: SingleDateHeartbeat[],\n maxSize = MAX_HEADER_BYTES\n): {\n heartbeatsToSend: HeartbeatsByUserAgent[];\n unsentEntries: SingleDateHeartbeat[];\n} {\n // Heartbeats grouped by user agent in the standard format to be sent in\n // the header.\n const heartbeatsToSend: HeartbeatsByUserAgent[] = [];\n // Single date format heartbeats that are not sent.\n let unsentEntries = heartbeatsCache.slice();\n for (const singleDateHeartbeat of heartbeatsCache) {\n // Look for an existing entry with the same user agent.\n const heartbeatEntry = heartbeatsToSend.find(\n hb => hb.agent === singleDateHeartbeat.agent\n );\n if (!heartbeatEntry) {\n // If no entry for this user agent exists, create one.\n heartbeatsToSend.push({\n agent: singleDateHeartbeat.agent,\n dates: [singleDateHeartbeat.date]\n });\n if (countBytes(heartbeatsToSend) > maxSize) {\n // If the header would exceed max size, remove the added heartbeat\n // entry and stop adding to the header.\n heartbeatsToSend.pop();\n break;\n }\n } else {\n heartbeatEntry.dates.push(singleDateHeartbeat.date);\n // If the header would exceed max size, remove the added date\n // and stop adding to the header.\n if (countBytes(heartbeatsToSend) > maxSize) {\n heartbeatEntry.dates.pop();\n break;\n }\n }\n // Pop unsent entry from queue. (Skipped if adding the entry exceeded\n // quota and the loop breaks early.)\n unsentEntries = unsentEntries.slice(1);\n }\n return {\n heartbeatsToSend,\n unsentEntries\n };\n}\n\nexport class HeartbeatStorageImpl implements HeartbeatStorage {\n private _canUseIndexedDBPromise: Promise;\n constructor(public app: FirebaseApp) {\n this._canUseIndexedDBPromise = this.runIndexedDBEnvironmentCheck();\n }\n async runIndexedDBEnvironmentCheck(): Promise {\n if (!isIndexedDBAvailable()) {\n return false;\n } else {\n return validateIndexedDBOpenable()\n .then(() => true)\n .catch(() => false);\n }\n }\n /**\n * Read all heartbeats.\n */\n async read(): Promise {\n const canUseIndexedDB = await this._canUseIndexedDBPromise;\n if (!canUseIndexedDB) {\n return { heartbeats: [] };\n } else {\n const idbHeartbeatObject = await readHeartbeatsFromIndexedDB(this.app);\n return idbHeartbeatObject || { heartbeats: [] };\n }\n }\n // overwrite the storage with the provided heartbeats\n async overwrite(heartbeatsObject: HeartbeatsInIndexedDB): Promise {\n const canUseIndexedDB = await this._canUseIndexedDBPromise;\n if (!canUseIndexedDB) {\n return;\n } else {\n const existingHeartbeatsObject = await this.read();\n return writeHeartbeatsToIndexedDB(this.app, {\n lastSentHeartbeatDate:\n heartbeatsObject.lastSentHeartbeatDate ??\n existingHeartbeatsObject.lastSentHeartbeatDate,\n heartbeats: heartbeatsObject.heartbeats\n });\n }\n }\n // add heartbeats\n async add(heartbeatsObject: HeartbeatsInIndexedDB): Promise {\n const canUseIndexedDB = await this._canUseIndexedDBPromise;\n if (!canUseIndexedDB) {\n return;\n } else {\n const existingHeartbeatsObject = await this.read();\n return writeHeartbeatsToIndexedDB(this.app, {\n lastSentHeartbeatDate:\n heartbeatsObject.lastSentHeartbeatDate ??\n existingHeartbeatsObject.lastSentHeartbeatDate,\n heartbeats: [\n ...existingHeartbeatsObject.heartbeats,\n ...heartbeatsObject.heartbeats\n ]\n });\n }\n }\n}\n\n/**\n * Calculate bytes of a HeartbeatsByUserAgent array after being wrapped\n * in a platform logging header JSON object, stringified, and converted\n * to base 64.\n */\nexport function countBytes(heartbeatsCache: HeartbeatsByUserAgent[]): number {\n // base64 has a restricted set of characters, all of which should be 1 byte.\n return base64urlEncodeWithoutPadding(\n // heartbeatsCache wrapper properties\n JSON.stringify({ version: 2, heartbeats: heartbeatsCache })\n ).length;\n}\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Component, ComponentType } from '@firebase/component';\nimport { PlatformLoggerServiceImpl } from './platformLoggerService';\nimport { name, version } from '../package.json';\nimport { _registerComponent } from './internal';\nimport { registerVersion } from './api';\nimport { HeartbeatServiceImpl } from './heartbeatService';\n\nexport function registerCoreComponents(variant?: string): void {\n _registerComponent(\n new Component(\n 'platform-logger',\n container => new PlatformLoggerServiceImpl(container),\n ComponentType.PRIVATE\n )\n );\n _registerComponent(\n new Component(\n 'heartbeat',\n container => new HeartbeatServiceImpl(container),\n ComponentType.PRIVATE\n )\n );\n\n // Register `app` package.\n registerVersion(name, version, variant);\n // BUILD_TARGET will be replaced by values like esm5, esm2017, cjs5, etc during the compilation\n registerVersion(name, version, '__BUILD_TARGET__');\n // Register platform SDK identifier (no version).\n registerVersion('fire-js', '');\n}\n","/**\n * Firebase App\n *\n * @remarks This package coordinates the communication between the different Firebase components\n * @packageDocumentation\n */\n\n/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { registerCoreComponents } from './registerCoreComponents';\n\nexport * from './api';\nexport * from './internal';\nexport * from './public-types';\n\nregisterCoreComponents('__RUNTIME_ENV__');\n","/**\n * @license\n * Copyright 2020 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\nimport { registerVersion } from '@firebase/app';\nimport { name, version } from '../package.json';\n\nregisterVersion(name, version, 'app');\nexport * from '@firebase/app';\n","/**\n * @license\n * Copyright 2019 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/** The semver (www.semver.org) version of the SDK. */\nexport let SDK_VERSION = '';\n\n/**\n * SDK_VERSION should be set before any database instance is created\n * @internal\n */\nexport function setSDKVersion(version: string): void {\n SDK_VERSION = version;\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { jsonEval, stringify } from '@firebase/util';\n\n/**\n * Wraps a DOM Storage object and:\n * - automatically encode objects as JSON strings before storing them to allow us to store arbitrary types.\n * - prefixes names with \"firebase:\" to avoid collisions with app data.\n *\n * We automatically (see storage.js) create two such wrappers, one for sessionStorage,\n * and one for localStorage.\n *\n */\nexport class DOMStorageWrapper {\n // Use a prefix to avoid collisions with other stuff saved by the app.\n private prefix_ = 'firebase:';\n\n /**\n * @param domStorage_ - The underlying storage object (e.g. localStorage or sessionStorage)\n */\n constructor(private domStorage_: Storage) {}\n\n /**\n * @param key - The key to save the value under\n * @param value - The value being stored, or null to remove the key.\n */\n set(key: string, value: unknown | null) {\n if (value == null) {\n this.domStorage_.removeItem(this.prefixedName_(key));\n } else {\n this.domStorage_.setItem(this.prefixedName_(key), stringify(value));\n }\n }\n\n /**\n * @returns The value that was stored under this key, or null\n */\n get(key: string): unknown {\n const storedVal = this.domStorage_.getItem(this.prefixedName_(key));\n if (storedVal == null) {\n return null;\n } else {\n return jsonEval(storedVal);\n }\n }\n\n remove(key: string) {\n this.domStorage_.removeItem(this.prefixedName_(key));\n }\n\n isInMemoryStorage: boolean;\n\n prefixedName_(name: string): string {\n return this.prefix_ + name;\n }\n\n toString(): string {\n return this.domStorage_.toString();\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { contains } from '@firebase/util';\n\n/**\n * An in-memory storage implementation that matches the API of DOMStorageWrapper\n * (TODO: create interface for both to implement).\n */\nexport class MemoryStorage {\n private cache_: { [k: string]: unknown } = {};\n\n set(key: string, value: unknown | null) {\n if (value == null) {\n delete this.cache_[key];\n } else {\n this.cache_[key] = value;\n }\n }\n\n get(key: string): unknown {\n if (contains(this.cache_, key)) {\n return this.cache_[key];\n }\n return null;\n }\n\n remove(key: string) {\n delete this.cache_[key];\n }\n\n isInMemoryStorage = true;\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { DOMStorageWrapper } from './DOMStorageWrapper';\nimport { MemoryStorage } from './MemoryStorage';\n\ndeclare const window: Window;\n\n/**\n * Helper to create a DOMStorageWrapper or else fall back to MemoryStorage.\n * TODO: Once MemoryStorage and DOMStorageWrapper have a shared interface this method annotation should change\n * to reflect this type\n *\n * @param domStorageName - Name of the underlying storage object\n * (e.g. 'localStorage' or 'sessionStorage').\n * @returns Turning off type information until a common interface is defined.\n */\nconst createStoragefor = function (\n domStorageName: string\n): DOMStorageWrapper | MemoryStorage {\n try {\n // NOTE: just accessing \"localStorage\" or \"window['localStorage']\" may throw a security exception,\n // so it must be inside the try/catch.\n if (\n typeof window !== 'undefined' &&\n typeof window[domStorageName] !== 'undefined'\n ) {\n // Need to test cache. Just because it's here doesn't mean it works\n const domStorage = window[domStorageName];\n domStorage.setItem('firebase:sentinel', 'cache');\n domStorage.removeItem('firebase:sentinel');\n return new DOMStorageWrapper(domStorage);\n }\n } catch (e) {}\n\n // Failed to create wrapper. Just return in-memory storage.\n // TODO: log?\n return new MemoryStorage();\n};\n\n/** A storage object that lasts across sessions */\nexport const PersistentStorage = createStoragefor('localStorage');\n\n/** A storage object that only lasts one session */\nexport const SessionStorage = createStoragefor('sessionStorage');\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Logger, LogLevel } from '@firebase/logger';\nimport {\n assert,\n base64,\n Sha1,\n stringToByteArray,\n stringify,\n isNodeSdk\n} from '@firebase/util';\n\nimport { SessionStorage } from '../storage/storage';\nimport { QueryContext } from '../view/EventRegistration';\n\ndeclare const window: Window;\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\ndeclare const Windows: any;\n\nconst logClient = new Logger('@firebase/database');\n\n/**\n * Returns a locally-unique ID (generated by just incrementing up from 0 each time its called).\n */\nexport const LUIDGenerator: () => number = (function () {\n let id = 1;\n return function () {\n return id++;\n };\n})();\n\n/**\n * Sha1 hash of the input string\n * @param str - The string to hash\n * @returns {!string} The resulting hash\n */\nexport const sha1 = function (str: string): string {\n const utf8Bytes = stringToByteArray(str);\n const sha1 = new Sha1();\n sha1.update(utf8Bytes);\n const sha1Bytes = sha1.digest();\n return base64.encodeByteArray(sha1Bytes);\n};\n\nconst buildLogMessage_ = function (...varArgs: unknown[]): string {\n let message = '';\n for (let i = 0; i < varArgs.length; i++) {\n const arg = varArgs[i];\n if (\n Array.isArray(arg) ||\n (arg &&\n typeof arg === 'object' &&\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n typeof (arg as any).length === 'number')\n ) {\n message += buildLogMessage_.apply(null, arg);\n } else if (typeof arg === 'object') {\n message += stringify(arg);\n } else {\n message += arg;\n }\n message += ' ';\n }\n\n return message;\n};\n\n/**\n * Use this for all debug messages in Firebase.\n */\nexport let logger: ((a: string) => void) | null = null;\n\n/**\n * Flag to check for log availability on first log message\n */\nlet firstLog_ = true;\n\n/**\n * The implementation of Firebase.enableLogging (defined here to break dependencies)\n * @param logger_ - A flag to turn on logging, or a custom logger\n * @param persistent - Whether or not to persist logging settings across refreshes\n */\nexport const enableLogging = function (\n logger_?: boolean | ((a: string) => void) | null,\n persistent?: boolean\n) {\n assert(\n !persistent || logger_ === true || logger_ === false,\n \"Can't turn on custom loggers persistently.\"\n );\n if (logger_ === true) {\n logClient.logLevel = LogLevel.VERBOSE;\n logger = logClient.log.bind(logClient);\n if (persistent) {\n SessionStorage.set('logging_enabled', true);\n }\n } else if (typeof logger_ === 'function') {\n logger = logger_;\n } else {\n logger = null;\n SessionStorage.remove('logging_enabled');\n }\n};\n\nexport const log = function (...varArgs: unknown[]) {\n if (firstLog_ === true) {\n firstLog_ = false;\n if (logger === null && SessionStorage.get('logging_enabled') === true) {\n enableLogging(true);\n }\n }\n\n if (logger) {\n const message = buildLogMessage_.apply(null, varArgs);\n logger(message);\n }\n};\n\nexport const logWrapper = function (\n prefix: string\n): (...varArgs: unknown[]) => void {\n return function (...varArgs: unknown[]) {\n log(prefix, ...varArgs);\n };\n};\n\nexport const error = function (...varArgs: string[]) {\n const message = 'FIREBASE INTERNAL ERROR: ' + buildLogMessage_(...varArgs);\n logClient.error(message);\n};\n\nexport const fatal = function (...varArgs: string[]) {\n const message = `FIREBASE FATAL ERROR: ${buildLogMessage_(...varArgs)}`;\n logClient.error(message);\n throw new Error(message);\n};\n\nexport const warn = function (...varArgs: unknown[]) {\n const message = 'FIREBASE WARNING: ' + buildLogMessage_(...varArgs);\n logClient.warn(message);\n};\n\n/**\n * Logs a warning if the containing page uses https. Called when a call to new Firebase\n * does not use https.\n */\nexport const warnIfPageIsSecure = function () {\n // Be very careful accessing browser globals. Who knows what may or may not exist.\n if (\n typeof window !== 'undefined' &&\n window.location &&\n window.location.protocol &&\n window.location.protocol.indexOf('https:') !== -1\n ) {\n warn(\n 'Insecure Firebase access from a secure page. ' +\n 'Please use https in calls to new Firebase().'\n );\n }\n};\n\nexport const warnAboutUnsupportedMethod = function (methodName: string) {\n warn(\n methodName +\n ' is unsupported and will likely change soon. ' +\n 'Please do not use.'\n );\n};\n\n/**\n * Returns true if data is NaN, or +/- Infinity.\n */\nexport const isInvalidJSONNumber = function (data: unknown): boolean {\n return (\n typeof data === 'number' &&\n (data !== data || // NaN\n data === Number.POSITIVE_INFINITY ||\n data === Number.NEGATIVE_INFINITY)\n );\n};\n\nexport const executeWhenDOMReady = function (fn: () => void) {\n if (isNodeSdk() || document.readyState === 'complete') {\n fn();\n } else {\n // Modeled after jQuery. Try DOMContentLoaded and onreadystatechange (which\n // fire before onload), but fall back to onload.\n\n let called = false;\n const wrappedFn = function () {\n if (!document.body) {\n setTimeout(wrappedFn, Math.floor(10));\n return;\n }\n\n if (!called) {\n called = true;\n fn();\n }\n };\n\n if (document.addEventListener) {\n document.addEventListener('DOMContentLoaded', wrappedFn, false);\n // fallback to onload.\n window.addEventListener('load', wrappedFn, false);\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n } else if ((document as any).attachEvent) {\n // IE.\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n (document as any).attachEvent('onreadystatechange', () => {\n if (document.readyState === 'complete') {\n wrappedFn();\n }\n });\n // fallback to onload.\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n (window as any).attachEvent('onload', wrappedFn);\n\n // jQuery has an extra hack for IE that we could employ (based on\n // http://javascript.nwbox.com/IEContentLoaded/) But it looks really old.\n // I'm hoping we don't need it.\n }\n }\n};\n\n/**\n * Minimum key name. Invalid for actual data, used as a marker to sort before any valid names\n */\nexport const MIN_NAME = '[MIN_NAME]';\n\n/**\n * Maximum key name. Invalid for actual data, used as a marker to sort above any valid names\n */\nexport const MAX_NAME = '[MAX_NAME]';\n\n/**\n * Compares valid Firebase key names, plus min and max name\n */\nexport const nameCompare = function (a: string, b: string): number {\n if (a === b) {\n return 0;\n } else if (a === MIN_NAME || b === MAX_NAME) {\n return -1;\n } else if (b === MIN_NAME || a === MAX_NAME) {\n return 1;\n } else {\n const aAsInt = tryParseInt(a),\n bAsInt = tryParseInt(b);\n\n if (aAsInt !== null) {\n if (bAsInt !== null) {\n return aAsInt - bAsInt === 0 ? a.length - b.length : aAsInt - bAsInt;\n } else {\n return -1;\n }\n } else if (bAsInt !== null) {\n return 1;\n } else {\n return a < b ? -1 : 1;\n }\n }\n};\n\n/**\n * @returns {!number} comparison result.\n */\nexport const stringCompare = function (a: string, b: string): number {\n if (a === b) {\n return 0;\n } else if (a < b) {\n return -1;\n } else {\n return 1;\n }\n};\n\nexport const requireKey = function (\n key: string,\n obj: { [k: string]: unknown }\n): unknown {\n if (obj && key in obj) {\n return obj[key];\n } else {\n throw new Error(\n 'Missing required key (' + key + ') in object: ' + stringify(obj)\n );\n }\n};\n\nexport const ObjectToUniqueKey = function (obj: unknown): string {\n if (typeof obj !== 'object' || obj === null) {\n return stringify(obj);\n }\n\n const keys = [];\n // eslint-disable-next-line guard-for-in\n for (const k in obj) {\n keys.push(k);\n }\n\n // Export as json, but with the keys sorted.\n keys.sort();\n let key = '{';\n for (let i = 0; i < keys.length; i++) {\n if (i !== 0) {\n key += ',';\n }\n key += stringify(keys[i]);\n key += ':';\n key += ObjectToUniqueKey(obj[keys[i]]);\n }\n\n key += '}';\n return key;\n};\n\n/**\n * Splits a string into a number of smaller segments of maximum size\n * @param str - The string\n * @param segsize - The maximum number of chars in the string.\n * @returns The string, split into appropriately-sized chunks\n */\nexport const splitStringBySize = function (\n str: string,\n segsize: number\n): string[] {\n const len = str.length;\n\n if (len <= segsize) {\n return [str];\n }\n\n const dataSegs = [];\n for (let c = 0; c < len; c += segsize) {\n if (c + segsize > len) {\n dataSegs.push(str.substring(c, len));\n } else {\n dataSegs.push(str.substring(c, c + segsize));\n }\n }\n return dataSegs;\n};\n\n/**\n * Apply a function to each (key, value) pair in an object or\n * apply a function to each (index, value) pair in an array\n * @param obj - The object or array to iterate over\n * @param fn - The function to apply\n */\nexport function each(obj: object, fn: (k: string, v: unknown) => void) {\n for (const key in obj) {\n if (obj.hasOwnProperty(key)) {\n fn(key, obj[key]);\n }\n }\n}\n\n/**\n * Like goog.bind, but doesn't bother to create a closure if opt_context is null/undefined.\n * @param callback - Callback function.\n * @param context - Optional context to bind to.\n *\n */\nexport const bindCallback = function (\n callback: (a: unknown) => void,\n context?: object | null\n): (a: unknown) => void {\n return context ? callback.bind(context) : callback;\n};\n\n/**\n * Borrowed from http://hg.secondlife.com/llsd/src/tip/js/typedarray.js (MIT License)\n * I made one modification at the end and removed the NaN / Infinity\n * handling (since it seemed broken [caused an overflow] and we don't need it). See MJL comments.\n * @param v - A double\n *\n */\nexport const doubleToIEEE754String = function (v: number): string {\n assert(!isInvalidJSONNumber(v), 'Invalid JSON number'); // MJL\n\n const ebits = 11,\n fbits = 52;\n const bias = (1 << (ebits - 1)) - 1;\n let s, e, f, ln, i;\n\n // Compute sign, exponent, fraction\n // Skip NaN / Infinity handling --MJL.\n if (v === 0) {\n e = 0;\n f = 0;\n s = 1 / v === -Infinity ? 1 : 0;\n } else {\n s = v < 0;\n v = Math.abs(v);\n\n if (v >= Math.pow(2, 1 - bias)) {\n // Normalized\n ln = Math.min(Math.floor(Math.log(v) / Math.LN2), bias);\n e = ln + bias;\n f = Math.round(v * Math.pow(2, fbits - ln) - Math.pow(2, fbits));\n } else {\n // Denormalized\n e = 0;\n f = Math.round(v / Math.pow(2, 1 - bias - fbits));\n }\n }\n\n // Pack sign, exponent, fraction\n const bits = [];\n for (i = fbits; i; i -= 1) {\n bits.push(f % 2 ? 1 : 0);\n f = Math.floor(f / 2);\n }\n for (i = ebits; i; i -= 1) {\n bits.push(e % 2 ? 1 : 0);\n e = Math.floor(e / 2);\n }\n bits.push(s ? 1 : 0);\n bits.reverse();\n const str = bits.join('');\n\n // Return the data as a hex string. --MJL\n let hexByteString = '';\n for (i = 0; i < 64; i += 8) {\n let hexByte = parseInt(str.substr(i, 8), 2).toString(16);\n if (hexByte.length === 1) {\n hexByte = '0' + hexByte;\n }\n hexByteString = hexByteString + hexByte;\n }\n return hexByteString.toLowerCase();\n};\n\n/**\n * Used to detect if we're in a Chrome content script (which executes in an\n * isolated environment where long-polling doesn't work).\n */\nexport const isChromeExtensionContentScript = function (): boolean {\n return !!(\n typeof window === 'object' &&\n window['chrome'] &&\n window['chrome']['extension'] &&\n !/^chrome/.test(window.location.href)\n );\n};\n\n/**\n * Used to detect if we're in a Windows 8 Store app.\n */\nexport const isWindowsStoreApp = function (): boolean {\n // Check for the presence of a couple WinRT globals\n return typeof Windows === 'object' && typeof Windows.UI === 'object';\n};\n\n/**\n * Converts a server error code to a Javascript Error\n */\nexport function errorForServerCode(code: string, query: QueryContext): Error {\n let reason = 'Unknown Error';\n if (code === 'too_big') {\n reason =\n 'The data requested exceeds the maximum size ' +\n 'that can be accessed with a single request.';\n } else if (code === 'permission_denied') {\n reason = \"Client doesn't have permission to access the desired data.\";\n } else if (code === 'unavailable') {\n reason = 'The service is unavailable';\n }\n\n const error = new Error(\n code + ' at ' + query._path.toString() + ': ' + reason\n );\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n (error as any).code = code.toUpperCase();\n return error;\n}\n\n/**\n * Used to test for integer-looking strings\n */\nexport const INTEGER_REGEXP_ = new RegExp('^-?(0*)\\\\d{1,10}$');\n\n/**\n * For use in keys, the minimum possible 32-bit integer.\n */\nexport const INTEGER_32_MIN = -2147483648;\n\n/**\n * For use in kyes, the maximum possible 32-bit integer.\n */\nexport const INTEGER_32_MAX = 2147483647;\n\n/**\n * If the string contains a 32-bit integer, return it. Else return null.\n */\nexport const tryParseInt = function (str: string): number | null {\n if (INTEGER_REGEXP_.test(str)) {\n const intVal = Number(str);\n if (intVal >= INTEGER_32_MIN && intVal <= INTEGER_32_MAX) {\n return intVal;\n }\n }\n return null;\n};\n\n/**\n * Helper to run some code but catch any exceptions and re-throw them later.\n * Useful for preventing user callbacks from breaking internal code.\n *\n * Re-throwing the exception from a setTimeout is a little evil, but it's very\n * convenient (we don't have to try to figure out when is a safe point to\n * re-throw it), and the behavior seems reasonable:\n *\n * * If you aren't pausing on exceptions, you get an error in the console with\n * the correct stack trace.\n * * If you're pausing on all exceptions, the debugger will pause on your\n * exception and then again when we rethrow it.\n * * If you're only pausing on uncaught exceptions, the debugger will only pause\n * on us re-throwing it.\n *\n * @param fn - The code to guard.\n */\nexport const exceptionGuard = function (fn: () => void) {\n try {\n fn();\n } catch (e) {\n // Re-throw exception when it's safe.\n setTimeout(() => {\n // It used to be that \"throw e\" would result in a good console error with\n // relevant context, but as of Chrome 39, you just get the firebase.js\n // file/line number where we re-throw it, which is useless. So we log\n // e.stack explicitly.\n const stack = e.stack || '';\n warn('Exception was thrown by user callback.', stack);\n throw e;\n }, Math.floor(0));\n }\n};\n\n/**\n * Helper function to safely call opt_callback with the specified arguments. It:\n * 1. Turns into a no-op if opt_callback is null or undefined.\n * 2. Wraps the call inside exceptionGuard to prevent exceptions from breaking our state.\n *\n * @param callback - Optional onComplete callback.\n * @param varArgs - Arbitrary args to be passed to opt_onComplete\n */\nexport const callUserCallback = function (\n // eslint-disable-next-line @typescript-eslint/ban-types\n callback?: Function | null,\n ...varArgs: unknown[]\n) {\n if (typeof callback === 'function') {\n exceptionGuard(() => {\n callback(...varArgs);\n });\n }\n};\n\n/**\n * @returns {boolean} true if we think we're currently being crawled.\n */\nexport const beingCrawled = function (): boolean {\n const userAgent =\n (typeof window === 'object' &&\n window['navigator'] &&\n window['navigator']['userAgent']) ||\n '';\n\n // For now we whitelist the most popular crawlers. We should refine this to be the set of crawlers we\n // believe to support JavaScript/AJAX rendering.\n // NOTE: Google Webmaster Tools doesn't really belong, but their \"This is how a visitor to your website\n // would have seen the page\" is flaky if we don't treat it as a crawler.\n return (\n userAgent.search(\n /googlebot|google webmaster tools|bingbot|yahoo! slurp|baiduspider|yandexbot|duckduckbot/i\n ) >= 0\n );\n};\n\n/**\n * Export a property of an object using a getter function.\n */\nexport const exportPropGetter = function (\n object: object,\n name: string,\n fnGet: () => unknown\n) {\n Object.defineProperty(object, name, { get: fnGet });\n};\n\n/**\n * Same as setTimeout() except on Node.JS it will /not/ prevent the process from exiting.\n *\n * It is removed with clearTimeout() as normal.\n *\n * @param fn - Function to run.\n * @param time - Milliseconds to wait before running.\n * @returns The setTimeout() return value.\n */\nexport const setTimeoutNonBlocking = function (\n fn: () => void,\n time: number\n): number | object {\n const timeout: number | object = setTimeout(fn, time);\n // Note: at the time of this comment, unrefTimer is under the unstable set of APIs. Run with --unstable to enable the API.\n if (\n typeof timeout === 'number' &&\n // @ts-ignore Is only defined in Deno environments.\n typeof Deno !== 'undefined' &&\n // @ts-ignore Deno and unrefTimer are only defined in Deno environments.\n Deno['unrefTimer']\n ) {\n // @ts-ignore Deno and unrefTimer are only defined in Deno environments.\n Deno.unrefTimer(timeout);\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n } else if (typeof timeout === 'object' && (timeout as any)['unref']) {\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n (timeout as any)['unref']();\n }\n\n return timeout;\n};\n","/**\n * @license\n * Copyright 2021 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n AppCheckInternalComponentName,\n AppCheckTokenListener,\n AppCheckTokenResult,\n FirebaseAppCheckInternal\n} from '@firebase/app-check-interop-types';\nimport { Provider } from '@firebase/component';\n\nimport { warn } from './util/util';\n\n/**\n * Abstraction around AppCheck's token fetching capabilities.\n */\nexport class AppCheckTokenProvider {\n private appCheck?: FirebaseAppCheckInternal;\n constructor(\n private appName_: string,\n private appCheckProvider?: Provider\n ) {\n this.appCheck = appCheckProvider?.getImmediate({ optional: true });\n if (!this.appCheck) {\n appCheckProvider?.get().then(appCheck => (this.appCheck = appCheck));\n }\n }\n\n getToken(forceRefresh?: boolean): Promise {\n if (!this.appCheck) {\n return new Promise((resolve, reject) => {\n // Support delayed initialization of FirebaseAppCheck. This allows our\n // customers to initialize the RTDB SDK before initializing Firebase\n // AppCheck and ensures that all requests are authenticated if a token\n // becomes available before the timoeout below expires.\n setTimeout(() => {\n if (this.appCheck) {\n this.getToken(forceRefresh).then(resolve, reject);\n } else {\n resolve(null);\n }\n }, 0);\n });\n }\n return this.appCheck.getToken(forceRefresh);\n }\n\n addTokenChangeListener(listener: AppCheckTokenListener) {\n this.appCheckProvider\n ?.get()\n .then(appCheck => appCheck.addTokenListener(listener));\n }\n\n notifyForInvalidToken(): void {\n warn(\n `Provided AppCheck credentials for the app named \"${this.appName_}\" ` +\n 'are invalid. This usually indicates your app was not initialized correctly.'\n );\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { FirebaseAuthTokenData } from '@firebase/app-types/private';\nimport {\n FirebaseAuthInternal,\n FirebaseAuthInternalName\n} from '@firebase/auth-interop-types';\nimport { Provider } from '@firebase/component';\n\nimport { log, warn } from './util/util';\n\nexport interface AuthTokenProvider {\n getToken(forceRefresh: boolean): Promise;\n addTokenChangeListener(listener: (token: string | null) => void): void;\n removeTokenChangeListener(listener: (token: string | null) => void): void;\n notifyForInvalidToken(): void;\n}\n\n/**\n * Abstraction around FirebaseApp's token fetching capabilities.\n */\nexport class FirebaseAuthTokenProvider implements AuthTokenProvider {\n private auth_: FirebaseAuthInternal | null = null;\n\n constructor(\n private appName_: string,\n private firebaseOptions_: object,\n private authProvider_: Provider\n ) {\n this.auth_ = authProvider_.getImmediate({ optional: true });\n if (!this.auth_) {\n authProvider_.onInit(auth => (this.auth_ = auth));\n }\n }\n\n getToken(forceRefresh: boolean): Promise {\n if (!this.auth_) {\n return new Promise((resolve, reject) => {\n // Support delayed initialization of FirebaseAuth. This allows our\n // customers to initialize the RTDB SDK before initializing Firebase\n // Auth and ensures that all requests are authenticated if a token\n // becomes available before the timoeout below expires.\n setTimeout(() => {\n if (this.auth_) {\n this.getToken(forceRefresh).then(resolve, reject);\n } else {\n resolve(null);\n }\n }, 0);\n });\n }\n\n return this.auth_.getToken(forceRefresh).catch(error => {\n // TODO: Need to figure out all the cases this is raised and whether\n // this makes sense.\n if (error && error.code === 'auth/token-not-initialized') {\n log('Got auth/token-not-initialized error. Treating as null token.');\n return null;\n } else {\n return Promise.reject(error);\n }\n });\n }\n\n addTokenChangeListener(listener: (token: string | null) => void): void {\n // TODO: We might want to wrap the listener and call it with no args to\n // avoid a leaky abstraction, but that makes removing the listener harder.\n if (this.auth_) {\n this.auth_.addAuthTokenListener(listener);\n } else {\n this.authProvider_\n .get()\n .then(auth => auth.addAuthTokenListener(listener));\n }\n }\n\n removeTokenChangeListener(listener: (token: string | null) => void): void {\n this.authProvider_\n .get()\n .then(auth => auth.removeAuthTokenListener(listener));\n }\n\n notifyForInvalidToken(): void {\n let errorMessage =\n 'Provided authentication credentials for the app named \"' +\n this.appName_ +\n '\" are invalid. This usually indicates your app was not ' +\n 'initialized correctly. ';\n if ('credential' in this.firebaseOptions_) {\n errorMessage +=\n 'Make sure the \"credential\" property provided to initializeApp() ' +\n 'is authorized to access the specified \"databaseURL\" and is from the correct ' +\n 'project.';\n } else if ('serviceAccount' in this.firebaseOptions_) {\n errorMessage +=\n 'Make sure the \"serviceAccount\" property provided to initializeApp() ' +\n 'is authorized to access the specified \"databaseURL\" and is from the correct ' +\n 'project.';\n } else {\n errorMessage +=\n 'Make sure the \"apiKey\" and \"databaseURL\" properties provided to ' +\n 'initializeApp() match the values provided for your app at ' +\n 'https://console.firebase.google.com/.';\n }\n warn(errorMessage);\n }\n}\n\n/* AuthTokenProvider that supplies a constant token. Used by Admin SDK or mockUserToken with emulators. */\nexport class EmulatorTokenProvider implements AuthTokenProvider {\n /** A string that is treated as an admin access token by the RTDB emulator. Used by Admin SDK. */\n static OWNER = 'owner';\n\n constructor(private accessToken: string) {}\n\n getToken(forceRefresh: boolean): Promise {\n return Promise.resolve({\n accessToken: this.accessToken\n });\n }\n\n addTokenChangeListener(listener: (token: string | null) => void): void {\n // Invoke the listener immediately to match the behavior in Firebase Auth\n // (see packages/auth/src/auth.js#L1807)\n listener(this.accessToken);\n }\n\n removeTokenChangeListener(listener: (token: string | null) => void): void {}\n\n notifyForInvalidToken(): void {}\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nexport const PROTOCOL_VERSION = '5';\n\nexport const VERSION_PARAM = 'v';\n\nexport const TRANSPORT_SESSION_PARAM = 's';\n\nexport const REFERER_PARAM = 'r';\n\nexport const FORGE_REF = 'f';\n\n// Matches console.firebase.google.com, firebase-console-*.corp.google.com and\n// firebase.corp.google.com\nexport const FORGE_DOMAIN_RE =\n /(console\\.firebase|firebase-console-\\w+\\.corp|firebase\\.corp)\\.google\\.com/;\n\nexport const LAST_SESSION_PARAM = 'ls';\n\nexport const APPLICATION_ID_PARAM = 'p';\n\nexport const APP_CHECK_TOKEN_PARAM = 'ac';\n\nexport const WEBSOCKET = 'websocket';\n\nexport const LONG_POLLING = 'long_polling';\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { assert } from '@firebase/util';\n\nimport { LONG_POLLING, WEBSOCKET } from '../realtime/Constants';\n\nimport { PersistentStorage } from './storage/storage';\nimport { each } from './util/util';\n\n/**\n * A class that holds metadata about a Repo object\n */\nexport class RepoInfo {\n private _host: string;\n private _domain: string;\n internalHost: string;\n\n /**\n * @param host - Hostname portion of the url for the repo\n * @param secure - Whether or not this repo is accessed over ssl\n * @param namespace - The namespace represented by the repo\n * @param webSocketOnly - Whether to prefer websockets over all other transports (used by Nest).\n * @param nodeAdmin - Whether this instance uses Admin SDK credentials\n * @param persistenceKey - Override the default session persistence storage key\n */\n constructor(\n host: string,\n public readonly secure: boolean,\n public readonly namespace: string,\n public readonly webSocketOnly: boolean,\n public readonly nodeAdmin: boolean = false,\n public readonly persistenceKey: string = '',\n public readonly includeNamespaceInQueryParams: boolean = false,\n public readonly isUsingEmulator: boolean = false\n ) {\n this._host = host.toLowerCase();\n this._domain = this._host.substr(this._host.indexOf('.') + 1);\n this.internalHost =\n (PersistentStorage.get('host:' + host) as string) || this._host;\n }\n\n isCacheableHost(): boolean {\n return this.internalHost.substr(0, 2) === 's-';\n }\n\n isCustomHost() {\n return (\n this._domain !== 'firebaseio.com' &&\n this._domain !== 'firebaseio-demo.com'\n );\n }\n\n get host() {\n return this._host;\n }\n\n set host(newHost: string) {\n if (newHost !== this.internalHost) {\n this.internalHost = newHost;\n if (this.isCacheableHost()) {\n PersistentStorage.set('host:' + this._host, this.internalHost);\n }\n }\n }\n\n toString(): string {\n let str = this.toURLString();\n if (this.persistenceKey) {\n str += '<' + this.persistenceKey + '>';\n }\n return str;\n }\n\n toURLString(): string {\n const protocol = this.secure ? 'https://' : 'http://';\n const query = this.includeNamespaceInQueryParams\n ? `?ns=${this.namespace}`\n : '';\n return `${protocol}${this.host}/${query}`;\n }\n}\n\nfunction repoInfoNeedsQueryParam(repoInfo: RepoInfo): boolean {\n return (\n repoInfo.host !== repoInfo.internalHost ||\n repoInfo.isCustomHost() ||\n repoInfo.includeNamespaceInQueryParams\n );\n}\n\n/**\n * Returns the websocket URL for this repo\n * @param repoInfo - RepoInfo object\n * @param type - of connection\n * @param params - list\n * @returns The URL for this repo\n */\nexport function repoInfoConnectionURL(\n repoInfo: RepoInfo,\n type: string,\n params: { [k: string]: string }\n): string {\n assert(typeof type === 'string', 'typeof type must == string');\n assert(typeof params === 'object', 'typeof params must == object');\n\n let connURL: string;\n if (type === WEBSOCKET) {\n connURL =\n (repoInfo.secure ? 'wss://' : 'ws://') + repoInfo.internalHost + '/.ws?';\n } else if (type === LONG_POLLING) {\n connURL =\n (repoInfo.secure ? 'https://' : 'http://') +\n repoInfo.internalHost +\n '/.lp?';\n } else {\n throw new Error('Unknown connection type: ' + type);\n }\n if (repoInfoNeedsQueryParam(repoInfo)) {\n params['ns'] = repoInfo.namespace;\n }\n\n const pairs: string[] = [];\n\n each(params, (key: string, value: string) => {\n pairs.push(key + '=' + value);\n });\n\n return connURL + pairs.join('&');\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { deepCopy, contains } from '@firebase/util';\n\n/**\n * Tracks a collection of stats.\n */\nexport class StatsCollection {\n private counters_: { [k: string]: number } = {};\n\n incrementCounter(name: string, amount: number = 1) {\n if (!contains(this.counters_, name)) {\n this.counters_[name] = 0;\n }\n\n this.counters_[name] += amount;\n }\n\n get() {\n return deepCopy(this.counters_);\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { RepoInfo } from '../RepoInfo';\n\nimport { StatsCollection } from './StatsCollection';\n\nconst collections: { [k: string]: StatsCollection } = {};\nconst reporters: { [k: string]: unknown } = {};\n\nexport function statsManagerGetCollection(repoInfo: RepoInfo): StatsCollection {\n const hashString = repoInfo.toString();\n\n if (!collections[hashString]) {\n collections[hashString] = new StatsCollection();\n }\n\n return collections[hashString];\n}\n\nexport function statsManagerGetOrCreateReporter(\n repoInfo: RepoInfo,\n creatorFunction: () => T\n): T {\n const hashString = repoInfo.toString();\n\n if (!reporters[hashString]) {\n reporters[hashString] = creatorFunction();\n }\n\n return reporters[hashString] as T;\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { exceptionGuard } from '../../core/util/util';\n\n/**\n * This class ensures the packets from the server arrive in order\n * This class takes data from the server and ensures it gets passed into the callbacks in order.\n */\nexport class PacketReceiver {\n pendingResponses: unknown[] = [];\n currentResponseNum = 0;\n closeAfterResponse = -1;\n onClose: (() => void) | null = null;\n\n /**\n * @param onMessage_\n */\n constructor(private onMessage_: (a: {}) => void) {}\n\n closeAfter(responseNum: number, callback: () => void) {\n this.closeAfterResponse = responseNum;\n this.onClose = callback;\n if (this.closeAfterResponse < this.currentResponseNum) {\n this.onClose();\n this.onClose = null;\n }\n }\n\n /**\n * Each message from the server comes with a response number, and an array of data. The responseNumber\n * allows us to ensure that we process them in the right order, since we can't be guaranteed that all\n * browsers will respond in the same order as the requests we sent\n */\n handleResponse(requestNum: number, data: unknown[]) {\n this.pendingResponses[requestNum] = data;\n while (this.pendingResponses[this.currentResponseNum]) {\n const toProcess = this.pendingResponses[\n this.currentResponseNum\n ] as unknown[];\n delete this.pendingResponses[this.currentResponseNum];\n for (let i = 0; i < toProcess.length; ++i) {\n if (toProcess[i]) {\n exceptionGuard(() => {\n this.onMessage_(toProcess[i]);\n });\n }\n }\n if (this.currentResponseNum === this.closeAfterResponse) {\n if (this.onClose) {\n this.onClose();\n this.onClose = null;\n }\n break;\n }\n this.currentResponseNum++;\n }\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { base64Encode, isNodeSdk, stringify } from '@firebase/util';\n\nimport { RepoInfo, repoInfoConnectionURL } from '../core/RepoInfo';\nimport { StatsCollection } from '../core/stats/StatsCollection';\nimport { statsManagerGetCollection } from '../core/stats/StatsManager';\nimport {\n executeWhenDOMReady,\n isChromeExtensionContentScript,\n isWindowsStoreApp,\n log,\n logWrapper,\n LUIDGenerator,\n splitStringBySize\n} from '../core/util/util';\n\nimport {\n APP_CHECK_TOKEN_PARAM,\n APPLICATION_ID_PARAM,\n FORGE_DOMAIN_RE,\n FORGE_REF,\n LAST_SESSION_PARAM,\n LONG_POLLING,\n PROTOCOL_VERSION,\n REFERER_PARAM,\n TRANSPORT_SESSION_PARAM,\n VERSION_PARAM\n} from './Constants';\nimport { PacketReceiver } from './polling/PacketReceiver';\nimport { Transport } from './Transport';\n\n// URL query parameters associated with longpolling\nexport const FIREBASE_LONGPOLL_START_PARAM = 'start';\nexport const FIREBASE_LONGPOLL_CLOSE_COMMAND = 'close';\nexport const FIREBASE_LONGPOLL_COMMAND_CB_NAME = 'pLPCommand';\nexport const FIREBASE_LONGPOLL_DATA_CB_NAME = 'pRTLPCB';\nexport const FIREBASE_LONGPOLL_ID_PARAM = 'id';\nexport const FIREBASE_LONGPOLL_PW_PARAM = 'pw';\nexport const FIREBASE_LONGPOLL_SERIAL_PARAM = 'ser';\nexport const FIREBASE_LONGPOLL_CALLBACK_ID_PARAM = 'cb';\nexport const FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM = 'seg';\nexport const FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET = 'ts';\nexport const FIREBASE_LONGPOLL_DATA_PARAM = 'd';\nexport const FIREBASE_LONGPOLL_DISCONN_FRAME_PARAM = 'disconn';\nexport const FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM = 'dframe';\n\n//Data size constants.\n//TODO: Perf: the maximum length actually differs from browser to browser.\n// We should check what browser we're on and set accordingly.\nconst MAX_URL_DATA_SIZE = 1870;\nconst SEG_HEADER_SIZE = 30; //ie: &seg=8299234&ts=982389123&d=\nconst MAX_PAYLOAD_SIZE = MAX_URL_DATA_SIZE - SEG_HEADER_SIZE;\n\n/**\n * Keepalive period\n * send a fresh request at minimum every 25 seconds. Opera has a maximum request\n * length of 30 seconds that we can't exceed.\n */\nconst KEEPALIVE_REQUEST_INTERVAL = 25000;\n\n/**\n * How long to wait before aborting a long-polling connection attempt.\n */\nconst LP_CONNECT_TIMEOUT = 30000;\n\n/**\n * This class manages a single long-polling connection.\n */\nexport class BrowserPollConnection implements Transport {\n bytesSent = 0;\n bytesReceived = 0;\n urlFn: (params: object) => string;\n scriptTagHolder: FirebaseIFrameScriptHolder;\n myDisconnFrame: HTMLIFrameElement;\n curSegmentNum: number;\n myPacketOrderer: PacketReceiver;\n id: string;\n password: string;\n private log_: (...a: unknown[]) => void;\n private stats_: StatsCollection;\n private everConnected_ = false;\n private isClosed_: boolean;\n private connectTimeoutTimer_: number | null;\n private onDisconnect_: ((a?: boolean) => void) | null;\n\n /**\n * @param connId An identifier for this connection, used for logging\n * @param repoInfo The info for the endpoint to send data to.\n * @param applicationId The Firebase App ID for this project.\n * @param appCheckToken The AppCheck token for this client.\n * @param authToken The AuthToken to use for this connection.\n * @param transportSessionId Optional transportSessionid if we are\n * reconnecting for an existing transport session\n * @param lastSessionId Optional lastSessionId if the PersistentConnection has\n * already created a connection previously\n */\n constructor(\n public connId: string,\n public repoInfo: RepoInfo,\n private applicationId?: string,\n private appCheckToken?: string,\n private authToken?: string,\n public transportSessionId?: string,\n public lastSessionId?: string\n ) {\n this.log_ = logWrapper(connId);\n this.stats_ = statsManagerGetCollection(repoInfo);\n this.urlFn = (params: { [k: string]: string }) => {\n // Always add the token if we have one.\n if (this.appCheckToken) {\n params[APP_CHECK_TOKEN_PARAM] = this.appCheckToken;\n }\n return repoInfoConnectionURL(repoInfo, LONG_POLLING, params);\n };\n }\n\n /**\n * @param onMessage - Callback when messages arrive\n * @param onDisconnect - Callback with connection lost.\n */\n open(onMessage: (msg: {}) => void, onDisconnect: (a?: boolean) => void) {\n this.curSegmentNum = 0;\n this.onDisconnect_ = onDisconnect;\n this.myPacketOrderer = new PacketReceiver(onMessage);\n this.isClosed_ = false;\n\n this.connectTimeoutTimer_ = setTimeout(() => {\n this.log_('Timed out trying to connect.');\n // Make sure we clear the host cache\n this.onClosed_();\n this.connectTimeoutTimer_ = null;\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n }, Math.floor(LP_CONNECT_TIMEOUT)) as any;\n\n // Ensure we delay the creation of the iframe until the DOM is loaded.\n executeWhenDOMReady(() => {\n if (this.isClosed_) {\n return;\n }\n\n //Set up a callback that gets triggered once a connection is set up.\n this.scriptTagHolder = new FirebaseIFrameScriptHolder(\n (...args) => {\n const [command, arg1, arg2, arg3, arg4] = args;\n this.incrementIncomingBytes_(args);\n if (!this.scriptTagHolder) {\n return; // we closed the connection.\n }\n\n if (this.connectTimeoutTimer_) {\n clearTimeout(this.connectTimeoutTimer_);\n this.connectTimeoutTimer_ = null;\n }\n this.everConnected_ = true;\n if (command === FIREBASE_LONGPOLL_START_PARAM) {\n this.id = arg1 as string;\n this.password = arg2 as string;\n } else if (command === FIREBASE_LONGPOLL_CLOSE_COMMAND) {\n // Don't clear the host cache. We got a response from the server, so we know it's reachable\n if (arg1) {\n // We aren't expecting any more data (other than what the server's already in the process of sending us\n // through our already open polls), so don't send any more.\n this.scriptTagHolder.sendNewPolls = false;\n\n // arg1 in this case is the last response number sent by the server. We should try to receive\n // all of the responses up to this one before closing\n this.myPacketOrderer.closeAfter(arg1 as number, () => {\n this.onClosed_();\n });\n } else {\n this.onClosed_();\n }\n } else {\n throw new Error('Unrecognized command received: ' + command);\n }\n },\n (...args) => {\n const [pN, data] = args;\n this.incrementIncomingBytes_(args);\n this.myPacketOrderer.handleResponse(pN as number, data as unknown[]);\n },\n () => {\n this.onClosed_();\n },\n this.urlFn\n );\n\n //Send the initial request to connect. The serial number is simply to keep the browser from pulling previous results\n //from cache.\n const urlParams: { [k: string]: string | number } = {};\n urlParams[FIREBASE_LONGPOLL_START_PARAM] = 't';\n urlParams[FIREBASE_LONGPOLL_SERIAL_PARAM] = Math.floor(\n Math.random() * 100000000\n );\n if (this.scriptTagHolder.uniqueCallbackIdentifier) {\n urlParams[FIREBASE_LONGPOLL_CALLBACK_ID_PARAM] =\n this.scriptTagHolder.uniqueCallbackIdentifier;\n }\n urlParams[VERSION_PARAM] = PROTOCOL_VERSION;\n if (this.transportSessionId) {\n urlParams[TRANSPORT_SESSION_PARAM] = this.transportSessionId;\n }\n if (this.lastSessionId) {\n urlParams[LAST_SESSION_PARAM] = this.lastSessionId;\n }\n if (this.applicationId) {\n urlParams[APPLICATION_ID_PARAM] = this.applicationId;\n }\n if (this.appCheckToken) {\n urlParams[APP_CHECK_TOKEN_PARAM] = this.appCheckToken;\n }\n if (\n typeof location !== 'undefined' &&\n location.hostname &&\n FORGE_DOMAIN_RE.test(location.hostname)\n ) {\n urlParams[REFERER_PARAM] = FORGE_REF;\n }\n const connectURL = this.urlFn(urlParams);\n this.log_('Connecting via long-poll to ' + connectURL);\n this.scriptTagHolder.addTag(connectURL, () => {\n /* do nothing */\n });\n });\n }\n\n /**\n * Call this when a handshake has completed successfully and we want to consider the connection established\n */\n start() {\n this.scriptTagHolder.startLongPoll(this.id, this.password);\n this.addDisconnectPingFrame(this.id, this.password);\n }\n\n static forceAllow_: boolean;\n\n /**\n * Forces long polling to be considered as a potential transport\n */\n static forceAllow() {\n BrowserPollConnection.forceAllow_ = true;\n }\n\n static forceDisallow_: boolean;\n\n /**\n * Forces longpolling to not be considered as a potential transport\n */\n static forceDisallow() {\n BrowserPollConnection.forceDisallow_ = true;\n }\n\n // Static method, use string literal so it can be accessed in a generic way\n static isAvailable() {\n if (isNodeSdk()) {\n return false;\n } else if (BrowserPollConnection.forceAllow_) {\n return true;\n } else {\n // NOTE: In React-Native there's normally no 'document', but if you debug a React-Native app in\n // the Chrome debugger, 'document' is defined, but document.createElement is null (2015/06/08).\n return (\n !BrowserPollConnection.forceDisallow_ &&\n typeof document !== 'undefined' &&\n document.createElement != null &&\n !isChromeExtensionContentScript() &&\n !isWindowsStoreApp()\n );\n }\n }\n\n /**\n * No-op for polling\n */\n markConnectionHealthy() {}\n\n /**\n * Stops polling and cleans up the iframe\n */\n private shutdown_() {\n this.isClosed_ = true;\n\n if (this.scriptTagHolder) {\n this.scriptTagHolder.close();\n this.scriptTagHolder = null;\n }\n\n //remove the disconnect frame, which will trigger an XHR call to the server to tell it we're leaving.\n if (this.myDisconnFrame) {\n document.body.removeChild(this.myDisconnFrame);\n this.myDisconnFrame = null;\n }\n\n if (this.connectTimeoutTimer_) {\n clearTimeout(this.connectTimeoutTimer_);\n this.connectTimeoutTimer_ = null;\n }\n }\n\n /**\n * Triggered when this transport is closed\n */\n private onClosed_() {\n if (!this.isClosed_) {\n this.log_('Longpoll is closing itself');\n this.shutdown_();\n\n if (this.onDisconnect_) {\n this.onDisconnect_(this.everConnected_);\n this.onDisconnect_ = null;\n }\n }\n }\n\n /**\n * External-facing close handler. RealTime has requested we shut down. Kill our connection and tell the server\n * that we've left.\n */\n close() {\n if (!this.isClosed_) {\n this.log_('Longpoll is being closed.');\n this.shutdown_();\n }\n }\n\n /**\n * Send the JSON object down to the server. It will need to be stringified, base64 encoded, and then\n * broken into chunks (since URLs have a small maximum length).\n * @param data - The JSON data to transmit.\n */\n send(data: {}) {\n const dataStr = stringify(data);\n this.bytesSent += dataStr.length;\n this.stats_.incrementCounter('bytes_sent', dataStr.length);\n\n //first, lets get the base64-encoded data\n const base64data = base64Encode(dataStr);\n\n //We can only fit a certain amount in each URL, so we need to split this request\n //up into multiple pieces if it doesn't fit in one request.\n const dataSegs = splitStringBySize(base64data, MAX_PAYLOAD_SIZE);\n\n //Enqueue each segment for transmission. We assign each chunk a sequential ID and a total number\n //of segments so that we can reassemble the packet on the server.\n for (let i = 0; i < dataSegs.length; i++) {\n this.scriptTagHolder.enqueueSegment(\n this.curSegmentNum,\n dataSegs.length,\n dataSegs[i]\n );\n this.curSegmentNum++;\n }\n }\n\n /**\n * This is how we notify the server that we're leaving.\n * We aren't able to send requests with DHTML on a window close event, but we can\n * trigger XHR requests in some browsers (everything but Opera basically).\n */\n addDisconnectPingFrame(id: string, pw: string) {\n if (isNodeSdk()) {\n return;\n }\n this.myDisconnFrame = document.createElement('iframe');\n const urlParams: { [k: string]: string } = {};\n urlParams[FIREBASE_LONGPOLL_DISCONN_FRAME_REQUEST_PARAM] = 't';\n urlParams[FIREBASE_LONGPOLL_ID_PARAM] = id;\n urlParams[FIREBASE_LONGPOLL_PW_PARAM] = pw;\n this.myDisconnFrame.src = this.urlFn(urlParams);\n this.myDisconnFrame.style.display = 'none';\n\n document.body.appendChild(this.myDisconnFrame);\n }\n\n /**\n * Used to track the bytes received by this client\n */\n private incrementIncomingBytes_(args: unknown) {\n // TODO: This is an annoying perf hit just to track the number of incoming bytes. Maybe it should be opt-in.\n const bytesReceived = stringify(args).length;\n this.bytesReceived += bytesReceived;\n this.stats_.incrementCounter('bytes_received', bytesReceived);\n }\n}\n\n// eslint-disable-next-line @typescript-eslint/naming-convention\nexport interface IFrameElement extends HTMLIFrameElement {\n doc: Document;\n}\n\n/*********************************************************************************************\n * A wrapper around an iframe that is used as a long-polling script holder.\n *********************************************************************************************/\nexport class FirebaseIFrameScriptHolder {\n //We maintain a count of all of the outstanding requests, because if we have too many active at once it can cause\n //problems in some browsers.\n outstandingRequests = new Set();\n\n //A queue of the pending segments waiting for transmission to the server.\n pendingSegs: Array<{ seg: number; ts: number; d: unknown }> = [];\n\n //A serial number. We use this for two things:\n // 1) A way to ensure the browser doesn't cache responses to polls\n // 2) A way to make the server aware when long-polls arrive in a different order than we started them. The\n // server needs to release both polls in this case or it will cause problems in Opera since Opera can only execute\n // JSONP code in the order it was added to the iframe.\n currentSerial = Math.floor(Math.random() * 100000000);\n\n // This gets set to false when we're \"closing down\" the connection (e.g. we're switching transports but there's still\n // incoming data from the server that we're waiting for).\n sendNewPolls = true;\n\n uniqueCallbackIdentifier: number;\n myIFrame: IFrameElement;\n alive: boolean;\n myID: string;\n myPW: string;\n commandCB: (command: string, ...args: unknown[]) => void;\n onMessageCB: (...args: unknown[]) => void;\n\n /**\n * @param commandCB - The callback to be called when control commands are recevied from the server.\n * @param onMessageCB - The callback to be triggered when responses arrive from the server.\n * @param onDisconnect - The callback to be triggered when this tag holder is closed\n * @param urlFn - A function that provides the URL of the endpoint to send data to.\n */\n constructor(\n commandCB: (command: string, ...args: unknown[]) => void,\n onMessageCB: (...args: unknown[]) => void,\n public onDisconnect: () => void,\n public urlFn: (a: object) => string\n ) {\n if (!isNodeSdk()) {\n //Each script holder registers a couple of uniquely named callbacks with the window. These are called from the\n //iframes where we put the long-polling script tags. We have two callbacks:\n // 1) Command Callback - Triggered for control issues, like starting a connection.\n // 2) Message Callback - Triggered when new data arrives.\n this.uniqueCallbackIdentifier = LUIDGenerator();\n window[\n FIREBASE_LONGPOLL_COMMAND_CB_NAME + this.uniqueCallbackIdentifier\n ] = commandCB;\n window[FIREBASE_LONGPOLL_DATA_CB_NAME + this.uniqueCallbackIdentifier] =\n onMessageCB;\n\n //Create an iframe for us to add script tags to.\n this.myIFrame = FirebaseIFrameScriptHolder.createIFrame_();\n\n // Set the iframe's contents.\n let script = '';\n // if we set a javascript url, it's IE and we need to set the document domain. The javascript url is sufficient\n // for ie9, but ie8 needs to do it again in the document itself.\n if (\n this.myIFrame.src &&\n this.myIFrame.src.substr(0, 'javascript:'.length) === 'javascript:'\n ) {\n const currentDomain = document.domain;\n script = '';\n }\n const iframeContents = '' + script + '';\n try {\n this.myIFrame.doc.open();\n this.myIFrame.doc.write(iframeContents);\n this.myIFrame.doc.close();\n } catch (e) {\n log('frame writing exception');\n if (e.stack) {\n log(e.stack);\n }\n log(e);\n }\n } else {\n this.commandCB = commandCB;\n this.onMessageCB = onMessageCB;\n }\n }\n\n /**\n * Each browser has its own funny way to handle iframes. Here we mush them all together into one object that I can\n * actually use.\n */\n private static createIFrame_(): IFrameElement {\n const iframe = document.createElement('iframe') as IFrameElement;\n iframe.style.display = 'none';\n\n // This is necessary in order to initialize the document inside the iframe\n if (document.body) {\n document.body.appendChild(iframe);\n try {\n // If document.domain has been modified in IE, this will throw an error, and we need to set the\n // domain of the iframe's document manually. We can do this via a javascript: url as the src attribute\n // Also note that we must do this *after* the iframe has been appended to the page. Otherwise it doesn't work.\n const a = iframe.contentWindow.document;\n if (!a) {\n // Apologies for the log-spam, I need to do something to keep closure from optimizing out the assignment above.\n log('No IE domain setting required');\n }\n } catch (e) {\n const domain = document.domain;\n iframe.src =\n \"javascript:void((function(){document.open();document.domain='\" +\n domain +\n \"';document.close();})())\";\n }\n } else {\n // LongPollConnection attempts to delay initialization until the document is ready, so hopefully this\n // never gets hit.\n throw 'Document body has not initialized. Wait to initialize Firebase until after the document is ready.';\n }\n\n // Get the document of the iframe in a browser-specific way.\n if (iframe.contentDocument) {\n iframe.doc = iframe.contentDocument; // Firefox, Opera, Safari\n } else if (iframe.contentWindow) {\n iframe.doc = iframe.contentWindow.document; // Internet Explorer\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n } else if ((iframe as any).document) {\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n iframe.doc = (iframe as any).document; //others?\n }\n\n return iframe;\n }\n\n /**\n * Cancel all outstanding queries and remove the frame.\n */\n close() {\n //Mark this iframe as dead, so no new requests are sent.\n this.alive = false;\n\n if (this.myIFrame) {\n //We have to actually remove all of the html inside this iframe before removing it from the\n //window, or IE will continue loading and executing the script tags we've already added, which\n //can lead to some errors being thrown. Setting textContent seems to be the safest way to do this.\n this.myIFrame.doc.body.textContent = '';\n setTimeout(() => {\n if (this.myIFrame !== null) {\n document.body.removeChild(this.myIFrame);\n this.myIFrame = null;\n }\n }, Math.floor(0));\n }\n\n // Protect from being called recursively.\n const onDisconnect = this.onDisconnect;\n if (onDisconnect) {\n this.onDisconnect = null;\n onDisconnect();\n }\n }\n\n /**\n * Actually start the long-polling session by adding the first script tag(s) to the iframe.\n * @param id - The ID of this connection\n * @param pw - The password for this connection\n */\n startLongPoll(id: string, pw: string) {\n this.myID = id;\n this.myPW = pw;\n this.alive = true;\n\n //send the initial request. If there are requests queued, make sure that we transmit as many as we are currently able to.\n while (this.newRequest_()) {}\n }\n\n /**\n * This is called any time someone might want a script tag to be added. It adds a script tag when there aren't\n * too many outstanding requests and we are still alive.\n *\n * If there are outstanding packet segments to send, it sends one. If there aren't, it sends a long-poll anyways if\n * needed.\n */\n private newRequest_() {\n // We keep one outstanding request open all the time to receive data, but if we need to send data\n // (pendingSegs.length > 0) then we create a new request to send the data. The server will automatically\n // close the old request.\n if (\n this.alive &&\n this.sendNewPolls &&\n this.outstandingRequests.size < (this.pendingSegs.length > 0 ? 2 : 1)\n ) {\n //construct our url\n this.currentSerial++;\n const urlParams: { [k: string]: string | number } = {};\n urlParams[FIREBASE_LONGPOLL_ID_PARAM] = this.myID;\n urlParams[FIREBASE_LONGPOLL_PW_PARAM] = this.myPW;\n urlParams[FIREBASE_LONGPOLL_SERIAL_PARAM] = this.currentSerial;\n let theURL = this.urlFn(urlParams);\n //Now add as much data as we can.\n let curDataString = '';\n let i = 0;\n\n while (this.pendingSegs.length > 0) {\n //first, lets see if the next segment will fit.\n const nextSeg = this.pendingSegs[0];\n if (\n (nextSeg.d as unknown[]).length +\n SEG_HEADER_SIZE +\n curDataString.length <=\n MAX_URL_DATA_SIZE\n ) {\n //great, the segment will fit. Lets append it.\n const theSeg = this.pendingSegs.shift();\n curDataString =\n curDataString +\n '&' +\n FIREBASE_LONGPOLL_SEGMENT_NUM_PARAM +\n i +\n '=' +\n theSeg.seg +\n '&' +\n FIREBASE_LONGPOLL_SEGMENTS_IN_PACKET +\n i +\n '=' +\n theSeg.ts +\n '&' +\n FIREBASE_LONGPOLL_DATA_PARAM +\n i +\n '=' +\n theSeg.d;\n i++;\n } else {\n break;\n }\n }\n\n theURL = theURL + curDataString;\n this.addLongPollTag_(theURL, this.currentSerial);\n\n return true;\n } else {\n return false;\n }\n }\n\n /**\n * Queue a packet for transmission to the server.\n * @param segnum - A sequential id for this packet segment used for reassembly\n * @param totalsegs - The total number of segments in this packet\n * @param data - The data for this segment.\n */\n enqueueSegment(segnum: number, totalsegs: number, data: unknown) {\n //add this to the queue of segments to send.\n this.pendingSegs.push({ seg: segnum, ts: totalsegs, d: data });\n\n //send the data immediately if there isn't already data being transmitted, unless\n //startLongPoll hasn't been called yet.\n if (this.alive) {\n this.newRequest_();\n }\n }\n\n /**\n * Add a script tag for a regular long-poll request.\n * @param url - The URL of the script tag.\n * @param serial - The serial number of the request.\n */\n private addLongPollTag_(url: string, serial: number) {\n //remember that we sent this request.\n this.outstandingRequests.add(serial);\n\n const doNewRequest = () => {\n this.outstandingRequests.delete(serial);\n this.newRequest_();\n };\n\n // If this request doesn't return on its own accord (by the server sending us some data), we'll\n // create a new one after the KEEPALIVE interval to make sure we always keep a fresh request open.\n const keepaliveTimeout = setTimeout(\n doNewRequest,\n Math.floor(KEEPALIVE_REQUEST_INTERVAL)\n );\n\n const readyStateCB = () => {\n // Request completed. Cancel the keepalive.\n clearTimeout(keepaliveTimeout);\n\n // Trigger a new request so we can continue receiving data.\n doNewRequest();\n };\n\n this.addTag(url, readyStateCB);\n }\n\n /**\n * Add an arbitrary script tag to the iframe.\n * @param url - The URL for the script tag source.\n * @param loadCB - A callback to be triggered once the script has loaded.\n */\n addTag(url: string, loadCB: () => void) {\n if (isNodeSdk()) {\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n (this as any).doNodeLongPoll(url, loadCB);\n } else {\n setTimeout(() => {\n try {\n // if we're already closed, don't add this poll\n if (!this.sendNewPolls) {\n return;\n }\n const newScript = this.myIFrame.doc.createElement('script');\n newScript.type = 'text/javascript';\n newScript.async = true;\n newScript.src = url;\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n newScript.onload = (newScript as any).onreadystatechange =\n function () {\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n const rstate = (newScript as any).readyState;\n if (!rstate || rstate === 'loaded' || rstate === 'complete') {\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n newScript.onload = (newScript as any).onreadystatechange = null;\n if (newScript.parentNode) {\n newScript.parentNode.removeChild(newScript);\n }\n loadCB();\n }\n };\n newScript.onerror = () => {\n log('Long-poll script failed to load: ' + url);\n this.sendNewPolls = false;\n this.close();\n };\n this.myIFrame.doc.body.appendChild(newScript);\n } catch (e) {\n // TODO: we should make this error visible somehow\n }\n }, Math.floor(1));\n }\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { assert, isNodeSdk, jsonEval, stringify } from '@firebase/util';\n\nimport { RepoInfo, repoInfoConnectionURL } from '../core/RepoInfo';\nimport { StatsCollection } from '../core/stats/StatsCollection';\nimport { statsManagerGetCollection } from '../core/stats/StatsManager';\nimport { PersistentStorage } from '../core/storage/storage';\nimport { logWrapper, splitStringBySize } from '../core/util/util';\nimport { SDK_VERSION } from '../core/version';\n\nimport {\n APPLICATION_ID_PARAM,\n APP_CHECK_TOKEN_PARAM,\n FORGE_DOMAIN_RE,\n FORGE_REF,\n LAST_SESSION_PARAM,\n PROTOCOL_VERSION,\n REFERER_PARAM,\n TRANSPORT_SESSION_PARAM,\n VERSION_PARAM,\n WEBSOCKET\n} from './Constants';\nimport { Transport } from './Transport';\n\n// eslint-disable-next-line @typescript-eslint/no-explicit-any\ndeclare const MozWebSocket: any;\n\nconst WEBSOCKET_MAX_FRAME_SIZE = 16384;\nconst WEBSOCKET_KEEPALIVE_INTERVAL = 45000;\n\nlet WebSocketImpl = null;\nif (typeof MozWebSocket !== 'undefined') {\n WebSocketImpl = MozWebSocket;\n} else if (typeof WebSocket !== 'undefined') {\n WebSocketImpl = WebSocket;\n}\n\nexport function setWebSocketImpl(impl) {\n WebSocketImpl = impl;\n}\n\n/**\n * Create a new websocket connection with the given callbacks.\n */\nexport class WebSocketConnection implements Transport {\n keepaliveTimer: number | null = null;\n frames: string[] | null = null;\n totalFrames = 0;\n bytesSent = 0;\n bytesReceived = 0;\n connURL: string;\n onDisconnect: (a?: boolean) => void;\n onMessage: (msg: {}) => void;\n mySock: WebSocket | null;\n private log_: (...a: unknown[]) => void;\n private stats_: StatsCollection;\n private everConnected_: boolean;\n private isClosed_: boolean;\n private nodeAdmin: boolean;\n\n /**\n * @param connId identifier for this transport\n * @param repoInfo The info for the websocket endpoint.\n * @param applicationId The Firebase App ID for this project.\n * @param appCheckToken The App Check Token for this client.\n * @param authToken The Auth Token for this client.\n * @param transportSessionId Optional transportSessionId if this is connecting\n * to an existing transport session\n * @param lastSessionId Optional lastSessionId if there was a previous\n * connection\n */\n constructor(\n public connId: string,\n repoInfo: RepoInfo,\n private applicationId?: string,\n private appCheckToken?: string,\n private authToken?: string,\n transportSessionId?: string,\n lastSessionId?: string\n ) {\n this.log_ = logWrapper(this.connId);\n this.stats_ = statsManagerGetCollection(repoInfo);\n this.connURL = WebSocketConnection.connectionURL_(\n repoInfo,\n transportSessionId,\n lastSessionId,\n appCheckToken,\n applicationId\n );\n this.nodeAdmin = repoInfo.nodeAdmin;\n }\n\n /**\n * @param repoInfo - The info for the websocket endpoint.\n * @param transportSessionId - Optional transportSessionId if this is connecting to an existing transport\n * session\n * @param lastSessionId - Optional lastSessionId if there was a previous connection\n * @returns connection url\n */\n private static connectionURL_(\n repoInfo: RepoInfo,\n transportSessionId?: string,\n lastSessionId?: string,\n appCheckToken?: string,\n applicationId?: string\n ): string {\n const urlParams: { [k: string]: string } = {};\n urlParams[VERSION_PARAM] = PROTOCOL_VERSION;\n\n if (\n !isNodeSdk() &&\n typeof location !== 'undefined' &&\n location.hostname &&\n FORGE_DOMAIN_RE.test(location.hostname)\n ) {\n urlParams[REFERER_PARAM] = FORGE_REF;\n }\n if (transportSessionId) {\n urlParams[TRANSPORT_SESSION_PARAM] = transportSessionId;\n }\n if (lastSessionId) {\n urlParams[LAST_SESSION_PARAM] = lastSessionId;\n }\n if (appCheckToken) {\n urlParams[APP_CHECK_TOKEN_PARAM] = appCheckToken;\n }\n if (applicationId) {\n urlParams[APPLICATION_ID_PARAM] = applicationId;\n }\n\n return repoInfoConnectionURL(repoInfo, WEBSOCKET, urlParams);\n }\n\n /**\n * @param onMessage - Callback when messages arrive\n * @param onDisconnect - Callback with connection lost.\n */\n open(onMessage: (msg: {}) => void, onDisconnect: (a?: boolean) => void) {\n this.onDisconnect = onDisconnect;\n this.onMessage = onMessage;\n\n this.log_('Websocket connecting to ' + this.connURL);\n\n this.everConnected_ = false;\n // Assume failure until proven otherwise.\n PersistentStorage.set('previous_websocket_failure', true);\n\n try {\n let options: { [k: string]: object };\n if (isNodeSdk()) {\n const device = this.nodeAdmin ? 'AdminNode' : 'Node';\n // UA Format: Firebase////\n options = {\n headers: {\n 'User-Agent': `Firebase/${PROTOCOL_VERSION}/${SDK_VERSION}/${process.platform}/${device}`,\n 'X-Firebase-GMPID': this.applicationId || ''\n }\n };\n\n // If using Node with admin creds, AppCheck-related checks are unnecessary.\n // Note that we send the credentials here even if they aren't admin credentials, which is\n // not a problem.\n // Note that this header is just used to bypass appcheck, and the token should still be sent\n // through the websocket connection once it is established.\n if (this.authToken) {\n options.headers['Authorization'] = `Bearer ${this.authToken}`;\n }\n if (this.appCheckToken) {\n options.headers['X-Firebase-AppCheck'] = this.appCheckToken;\n }\n\n // Plumb appropriate http_proxy environment variable into faye-websocket if it exists.\n const env = process['env'];\n const proxy =\n this.connURL.indexOf('wss://') === 0\n ? env['HTTPS_PROXY'] || env['https_proxy']\n : env['HTTP_PROXY'] || env['http_proxy'];\n\n if (proxy) {\n options['proxy'] = { origin: proxy };\n }\n }\n this.mySock = new WebSocketImpl(this.connURL, [], options);\n } catch (e) {\n this.log_('Error instantiating WebSocket.');\n const error = e.message || e.data;\n if (error) {\n this.log_(error);\n }\n this.onClosed_();\n return;\n }\n\n this.mySock.onopen = () => {\n this.log_('Websocket connected.');\n this.everConnected_ = true;\n };\n\n this.mySock.onclose = () => {\n this.log_('Websocket connection was disconnected.');\n this.mySock = null;\n this.onClosed_();\n };\n\n this.mySock.onmessage = m => {\n this.handleIncomingFrame(m as {});\n };\n\n this.mySock.onerror = e => {\n this.log_('WebSocket error. Closing connection.');\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n const error = (e as any).message || (e as any).data;\n if (error) {\n this.log_(error);\n }\n this.onClosed_();\n };\n }\n\n /**\n * No-op for websockets, we don't need to do anything once the connection is confirmed as open\n */\n start() {}\n\n static forceDisallow_: boolean;\n\n static forceDisallow() {\n WebSocketConnection.forceDisallow_ = true;\n }\n\n static isAvailable(): boolean {\n let isOldAndroid = false;\n if (typeof navigator !== 'undefined' && navigator.userAgent) {\n const oldAndroidRegex = /Android ([0-9]{0,}\\.[0-9]{0,})/;\n const oldAndroidMatch = navigator.userAgent.match(oldAndroidRegex);\n if (oldAndroidMatch && oldAndroidMatch.length > 1) {\n if (parseFloat(oldAndroidMatch[1]) < 4.4) {\n isOldAndroid = true;\n }\n }\n }\n\n return (\n !isOldAndroid &&\n WebSocketImpl !== null &&\n !WebSocketConnection.forceDisallow_\n );\n }\n\n /**\n * Number of response before we consider the connection \"healthy.\"\n */\n static responsesRequiredToBeHealthy = 2;\n\n /**\n * Time to wait for the connection te become healthy before giving up.\n */\n static healthyTimeout = 30000;\n\n /**\n * Returns true if we previously failed to connect with this transport.\n */\n static previouslyFailed(): boolean {\n // If our persistent storage is actually only in-memory storage,\n // we default to assuming that it previously failed to be safe.\n return (\n PersistentStorage.isInMemoryStorage ||\n PersistentStorage.get('previous_websocket_failure') === true\n );\n }\n\n markConnectionHealthy() {\n PersistentStorage.remove('previous_websocket_failure');\n }\n\n private appendFrame_(data: string) {\n this.frames.push(data);\n if (this.frames.length === this.totalFrames) {\n const fullMess = this.frames.join('');\n this.frames = null;\n const jsonMess = jsonEval(fullMess) as object;\n\n //handle the message\n this.onMessage(jsonMess);\n }\n }\n\n /**\n * @param frameCount - The number of frames we are expecting from the server\n */\n private handleNewFrameCount_(frameCount: number) {\n this.totalFrames = frameCount;\n this.frames = [];\n }\n\n /**\n * Attempts to parse a frame count out of some text. If it can't, assumes a value of 1\n * @returns Any remaining data to be process, or null if there is none\n */\n private extractFrameCount_(data: string): string | null {\n assert(this.frames === null, 'We already have a frame buffer');\n // TODO: The server is only supposed to send up to 9999 frames (i.e. length <= 4), but that isn't being enforced\n // currently. So allowing larger frame counts (length <= 6). See https://app.asana.com/0/search/8688598998380/8237608042508\n if (data.length <= 6) {\n const frameCount = Number(data);\n if (!isNaN(frameCount)) {\n this.handleNewFrameCount_(frameCount);\n return null;\n }\n }\n this.handleNewFrameCount_(1);\n return data;\n }\n\n /**\n * Process a websocket frame that has arrived from the server.\n * @param mess - The frame data\n */\n handleIncomingFrame(mess: { [k: string]: unknown }) {\n if (this.mySock === null) {\n return; // Chrome apparently delivers incoming packets even after we .close() the connection sometimes.\n }\n const data = mess['data'] as string;\n this.bytesReceived += data.length;\n this.stats_.incrementCounter('bytes_received', data.length);\n\n this.resetKeepAlive();\n\n if (this.frames !== null) {\n // we're buffering\n this.appendFrame_(data);\n } else {\n // try to parse out a frame count, otherwise, assume 1 and process it\n const remainingData = this.extractFrameCount_(data);\n if (remainingData !== null) {\n this.appendFrame_(remainingData);\n }\n }\n }\n\n /**\n * Send a message to the server\n * @param data - The JSON object to transmit\n */\n send(data: {}) {\n this.resetKeepAlive();\n\n const dataStr = stringify(data);\n this.bytesSent += dataStr.length;\n this.stats_.incrementCounter('bytes_sent', dataStr.length);\n\n //We can only fit a certain amount in each websocket frame, so we need to split this request\n //up into multiple pieces if it doesn't fit in one request.\n\n const dataSegs = splitStringBySize(dataStr, WEBSOCKET_MAX_FRAME_SIZE);\n\n //Send the length header\n if (dataSegs.length > 1) {\n this.sendString_(String(dataSegs.length));\n }\n\n //Send the actual data in segments.\n for (let i = 0; i < dataSegs.length; i++) {\n this.sendString_(dataSegs[i]);\n }\n }\n\n private shutdown_() {\n this.isClosed_ = true;\n if (this.keepaliveTimer) {\n clearInterval(this.keepaliveTimer);\n this.keepaliveTimer = null;\n }\n\n if (this.mySock) {\n this.mySock.close();\n this.mySock = null;\n }\n }\n\n private onClosed_() {\n if (!this.isClosed_) {\n this.log_('WebSocket is closing itself');\n this.shutdown_();\n\n // since this is an internal close, trigger the close listener\n if (this.onDisconnect) {\n this.onDisconnect(this.everConnected_);\n this.onDisconnect = null;\n }\n }\n }\n\n /**\n * External-facing close handler.\n * Close the websocket and kill the connection.\n */\n close() {\n if (!this.isClosed_) {\n this.log_('WebSocket is being closed');\n this.shutdown_();\n }\n }\n\n /**\n * Kill the current keepalive timer and start a new one, to ensure that it always fires N seconds after\n * the last activity.\n */\n resetKeepAlive() {\n clearInterval(this.keepaliveTimer);\n this.keepaliveTimer = setInterval(() => {\n //If there has been no websocket activity for a while, send a no-op\n if (this.mySock) {\n this.sendString_('0');\n }\n this.resetKeepAlive();\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n }, Math.floor(WEBSOCKET_KEEPALIVE_INTERVAL)) as any;\n }\n\n /**\n * Send a string over the websocket.\n *\n * @param str - String to send.\n */\n private sendString_(str: string) {\n // Firefox seems to sometimes throw exceptions (NS_ERROR_UNEXPECTED) from websocket .send()\n // calls for some unknown reason. We treat these as an error and disconnect.\n // See https://app.asana.com/0/58926111402292/68021340250410\n try {\n this.mySock.send(str);\n } catch (e) {\n this.log_(\n 'Exception thrown from WebSocket.send():',\n e.message || e.data,\n 'Closing connection.'\n );\n setTimeout(this.onClosed_.bind(this), 0);\n }\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { RepoInfo } from '../core/RepoInfo';\nimport { warn } from '../core/util/util';\n\nimport { BrowserPollConnection } from './BrowserPollConnection';\nimport { TransportConstructor } from './Transport';\nimport { WebSocketConnection } from './WebSocketConnection';\n\n/**\n * Currently simplistic, this class manages what transport a Connection should use at various stages of its\n * lifecycle.\n *\n * It starts with longpolling in a browser, and httppolling on node. It then upgrades to websockets if\n * they are available.\n */\nexport class TransportManager {\n private transports_: TransportConstructor[];\n\n // Keeps track of whether the TransportManager has already chosen a transport to use\n static globalTransportInitialized_ = false;\n\n static get ALL_TRANSPORTS() {\n return [BrowserPollConnection, WebSocketConnection];\n }\n\n /**\n * Returns whether transport has been selected to ensure WebSocketConnection or BrowserPollConnection are not called after\n * TransportManager has already set up transports_\n */\n static get IS_TRANSPORT_INITIALIZED() {\n return this.globalTransportInitialized_;\n }\n\n /**\n * @param repoInfo - Metadata around the namespace we're connecting to\n */\n constructor(repoInfo: RepoInfo) {\n this.initTransports_(repoInfo);\n }\n\n private initTransports_(repoInfo: RepoInfo) {\n const isWebSocketsAvailable: boolean =\n WebSocketConnection && WebSocketConnection['isAvailable']();\n let isSkipPollConnection =\n isWebSocketsAvailable && !WebSocketConnection.previouslyFailed();\n\n if (repoInfo.webSocketOnly) {\n if (!isWebSocketsAvailable) {\n warn(\n \"wss:// URL used, but browser isn't known to support websockets. Trying anyway.\"\n );\n }\n\n isSkipPollConnection = true;\n }\n\n if (isSkipPollConnection) {\n this.transports_ = [WebSocketConnection];\n } else {\n const transports = (this.transports_ = [] as TransportConstructor[]);\n for (const transport of TransportManager.ALL_TRANSPORTS) {\n if (transport && transport['isAvailable']()) {\n transports.push(transport);\n }\n }\n TransportManager.globalTransportInitialized_ = true;\n }\n }\n\n /**\n * @returns The constructor for the initial transport to use\n */\n initialTransport(): TransportConstructor {\n if (this.transports_.length > 0) {\n return this.transports_[0];\n } else {\n throw new Error('No transports available');\n }\n }\n\n /**\n * @returns The constructor for the next transport, or null\n */\n upgradeTransport(): TransportConstructor | null {\n if (this.transports_.length > 1) {\n return this.transports_[1];\n } else {\n return null;\n }\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { RepoInfo } from '../core/RepoInfo';\nimport { PersistentStorage } from '../core/storage/storage';\nimport { Indexable } from '../core/util/misc';\nimport {\n error,\n logWrapper,\n requireKey,\n setTimeoutNonBlocking,\n warn\n} from '../core/util/util';\n\nimport { PROTOCOL_VERSION } from './Constants';\nimport { Transport, TransportConstructor } from './Transport';\nimport { TransportManager } from './TransportManager';\n\n// Abort upgrade attempt if it takes longer than 60s.\nconst UPGRADE_TIMEOUT = 60000;\n\n// For some transports (WebSockets), we need to \"validate\" the transport by exchanging a few requests and responses.\n// If we haven't sent enough requests within 5s, we'll start sending noop ping requests.\nconst DELAY_BEFORE_SENDING_EXTRA_REQUESTS = 5000;\n\n// If the initial data sent triggers a lot of bandwidth (i.e. it's a large put or a listen for a large amount of data)\n// then we may not be able to exchange our ping/pong requests within the healthy timeout. So if we reach the timeout\n// but we've sent/received enough bytes, we don't cancel the connection.\nconst BYTES_SENT_HEALTHY_OVERRIDE = 10 * 1024;\nconst BYTES_RECEIVED_HEALTHY_OVERRIDE = 100 * 1024;\n\nconst enum RealtimeState {\n CONNECTING,\n CONNECTED,\n DISCONNECTED\n}\n\nconst MESSAGE_TYPE = 't';\nconst MESSAGE_DATA = 'd';\nconst CONTROL_SHUTDOWN = 's';\nconst CONTROL_RESET = 'r';\nconst CONTROL_ERROR = 'e';\nconst CONTROL_PONG = 'o';\nconst SWITCH_ACK = 'a';\nconst END_TRANSMISSION = 'n';\nconst PING = 'p';\n\nconst SERVER_HELLO = 'h';\n\n/**\n * Creates a new real-time connection to the server using whichever method works\n * best in the current browser.\n */\nexport class Connection {\n connectionCount = 0;\n pendingDataMessages: unknown[] = [];\n sessionId: string;\n\n private conn_: Transport;\n private healthyTimeout_: number;\n private isHealthy_: boolean;\n private log_: (...args: unknown[]) => void;\n private primaryResponsesRequired_: number;\n private rx_: Transport;\n private secondaryConn_: Transport;\n private secondaryResponsesRequired_: number;\n private state_ = RealtimeState.CONNECTING;\n private transportManager_: TransportManager;\n private tx_: Transport;\n\n /**\n * @param id - an id for this connection\n * @param repoInfo_ - the info for the endpoint to connect to\n * @param applicationId_ - the Firebase App ID for this project\n * @param appCheckToken_ - The App Check Token for this device.\n * @param authToken_ - The auth token for this session.\n * @param onMessage_ - the callback to be triggered when a server-push message arrives\n * @param onReady_ - the callback to be triggered when this connection is ready to send messages.\n * @param onDisconnect_ - the callback to be triggered when a connection was lost\n * @param onKill_ - the callback to be triggered when this connection has permanently shut down.\n * @param lastSessionId - last session id in persistent connection. is used to clean up old session in real-time server\n */\n constructor(\n public id: string,\n private repoInfo_: RepoInfo,\n private applicationId_: string | undefined,\n private appCheckToken_: string | undefined,\n private authToken_: string | undefined,\n private onMessage_: (a: {}) => void,\n private onReady_: (a: number, b: string) => void,\n private onDisconnect_: () => void,\n private onKill_: (a: string) => void,\n public lastSessionId?: string\n ) {\n this.log_ = logWrapper('c:' + this.id + ':');\n this.transportManager_ = new TransportManager(repoInfo_);\n this.log_('Connection created');\n this.start_();\n }\n\n /**\n * Starts a connection attempt\n */\n private start_(): void {\n const conn = this.transportManager_.initialTransport();\n this.conn_ = new conn(\n this.nextTransportId_(),\n this.repoInfo_,\n this.applicationId_,\n this.appCheckToken_,\n this.authToken_,\n null,\n this.lastSessionId\n );\n\n // For certain transports (WebSockets), we need to send and receive several messages back and forth before we\n // can consider the transport healthy.\n this.primaryResponsesRequired_ = conn['responsesRequiredToBeHealthy'] || 0;\n\n const onMessageReceived = this.connReceiver_(this.conn_);\n const onConnectionLost = this.disconnReceiver_(this.conn_);\n this.tx_ = this.conn_;\n this.rx_ = this.conn_;\n this.secondaryConn_ = null;\n this.isHealthy_ = false;\n\n /*\n * Firefox doesn't like when code from one iframe tries to create another iframe by way of the parent frame.\n * This can occur in the case of a redirect, i.e. we guessed wrong on what server to connect to and received a reset.\n * Somehow, setTimeout seems to make this ok. That doesn't make sense from a security perspective, since you should\n * still have the context of your originating frame.\n */\n setTimeout(() => {\n // this.conn_ gets set to null in some of the tests. Check to make sure it still exists before using it\n this.conn_ && this.conn_.open(onMessageReceived, onConnectionLost);\n }, Math.floor(0));\n\n const healthyTimeoutMS = conn['healthyTimeout'] || 0;\n if (healthyTimeoutMS > 0) {\n this.healthyTimeout_ = setTimeoutNonBlocking(() => {\n this.healthyTimeout_ = null;\n if (!this.isHealthy_) {\n if (\n this.conn_ &&\n this.conn_.bytesReceived > BYTES_RECEIVED_HEALTHY_OVERRIDE\n ) {\n this.log_(\n 'Connection exceeded healthy timeout but has received ' +\n this.conn_.bytesReceived +\n ' bytes. Marking connection healthy.'\n );\n this.isHealthy_ = true;\n this.conn_.markConnectionHealthy();\n } else if (\n this.conn_ &&\n this.conn_.bytesSent > BYTES_SENT_HEALTHY_OVERRIDE\n ) {\n this.log_(\n 'Connection exceeded healthy timeout but has sent ' +\n this.conn_.bytesSent +\n ' bytes. Leaving connection alive.'\n );\n // NOTE: We don't want to mark it healthy, since we have no guarantee that the bytes have made it to\n // the server.\n } else {\n this.log_('Closing unhealthy connection after timeout.');\n this.close();\n }\n }\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n }, Math.floor(healthyTimeoutMS)) as any;\n }\n }\n\n private nextTransportId_(): string {\n return 'c:' + this.id + ':' + this.connectionCount++;\n }\n\n private disconnReceiver_(conn) {\n return everConnected => {\n if (conn === this.conn_) {\n this.onConnectionLost_(everConnected);\n } else if (conn === this.secondaryConn_) {\n this.log_('Secondary connection lost.');\n this.onSecondaryConnectionLost_();\n } else {\n this.log_('closing an old connection');\n }\n };\n }\n\n private connReceiver_(conn: Transport) {\n return (message: Indexable) => {\n if (this.state_ !== RealtimeState.DISCONNECTED) {\n if (conn === this.rx_) {\n this.onPrimaryMessageReceived_(message);\n } else if (conn === this.secondaryConn_) {\n this.onSecondaryMessageReceived_(message);\n } else {\n this.log_('message on old connection');\n }\n }\n };\n }\n\n /**\n * @param dataMsg - An arbitrary data message to be sent to the server\n */\n sendRequest(dataMsg: object) {\n // wrap in a data message envelope and send it on\n const msg = { t: 'd', d: dataMsg };\n this.sendData_(msg);\n }\n\n tryCleanupConnection() {\n if (this.tx_ === this.secondaryConn_ && this.rx_ === this.secondaryConn_) {\n this.log_(\n 'cleaning up and promoting a connection: ' + this.secondaryConn_.connId\n );\n this.conn_ = this.secondaryConn_;\n this.secondaryConn_ = null;\n // the server will shutdown the old connection\n }\n }\n\n private onSecondaryControl_(controlData: { [k: string]: unknown }) {\n if (MESSAGE_TYPE in controlData) {\n const cmd = controlData[MESSAGE_TYPE] as string;\n if (cmd === SWITCH_ACK) {\n this.upgradeIfSecondaryHealthy_();\n } else if (cmd === CONTROL_RESET) {\n // Most likely the session wasn't valid. Abandon the switch attempt\n this.log_('Got a reset on secondary, closing it');\n this.secondaryConn_.close();\n // If we were already using this connection for something, than we need to fully close\n if (\n this.tx_ === this.secondaryConn_ ||\n this.rx_ === this.secondaryConn_\n ) {\n this.close();\n }\n } else if (cmd === CONTROL_PONG) {\n this.log_('got pong on secondary.');\n this.secondaryResponsesRequired_--;\n this.upgradeIfSecondaryHealthy_();\n }\n }\n }\n\n private onSecondaryMessageReceived_(parsedData: Indexable) {\n const layer: string = requireKey('t', parsedData) as string;\n const data: unknown = requireKey('d', parsedData);\n if (layer === 'c') {\n this.onSecondaryControl_(data as Indexable);\n } else if (layer === 'd') {\n // got a data message, but we're still second connection. Need to buffer it up\n this.pendingDataMessages.push(data);\n } else {\n throw new Error('Unknown protocol layer: ' + layer);\n }\n }\n\n private upgradeIfSecondaryHealthy_() {\n if (this.secondaryResponsesRequired_ <= 0) {\n this.log_('Secondary connection is healthy.');\n this.isHealthy_ = true;\n this.secondaryConn_.markConnectionHealthy();\n this.proceedWithUpgrade_();\n } else {\n // Send a ping to make sure the connection is healthy.\n this.log_('sending ping on secondary.');\n this.secondaryConn_.send({ t: 'c', d: { t: PING, d: {} } });\n }\n }\n\n private proceedWithUpgrade_() {\n // tell this connection to consider itself open\n this.secondaryConn_.start();\n // send ack\n this.log_('sending client ack on secondary');\n this.secondaryConn_.send({ t: 'c', d: { t: SWITCH_ACK, d: {} } });\n\n // send end packet on primary transport, switch to sending on this one\n // can receive on this one, buffer responses until end received on primary transport\n this.log_('Ending transmission on primary');\n this.conn_.send({ t: 'c', d: { t: END_TRANSMISSION, d: {} } });\n this.tx_ = this.secondaryConn_;\n\n this.tryCleanupConnection();\n }\n\n private onPrimaryMessageReceived_(parsedData: { [k: string]: unknown }) {\n // Must refer to parsedData properties in quotes, so closure doesn't touch them.\n const layer: string = requireKey('t', parsedData) as string;\n const data: unknown = requireKey('d', parsedData);\n if (layer === 'c') {\n this.onControl_(data as { [k: string]: unknown });\n } else if (layer === 'd') {\n this.onDataMessage_(data);\n }\n }\n\n private onDataMessage_(message: unknown) {\n this.onPrimaryResponse_();\n\n // We don't do anything with data messages, just kick them up a level\n this.onMessage_(message);\n }\n\n private onPrimaryResponse_() {\n if (!this.isHealthy_) {\n this.primaryResponsesRequired_--;\n if (this.primaryResponsesRequired_ <= 0) {\n this.log_('Primary connection is healthy.');\n this.isHealthy_ = true;\n this.conn_.markConnectionHealthy();\n }\n }\n }\n\n private onControl_(controlData: { [k: string]: unknown }) {\n const cmd: string = requireKey(MESSAGE_TYPE, controlData) as string;\n if (MESSAGE_DATA in controlData) {\n const payload = controlData[MESSAGE_DATA];\n if (cmd === SERVER_HELLO) {\n const handshakePayload = {\n ...(payload as {\n ts: number;\n v: string;\n h: string;\n s: string;\n })\n };\n if (this.repoInfo_.isUsingEmulator) {\n // Upon connecting, the emulator will pass the hostname that it's aware of, but we prefer the user's set hostname via `connectDatabaseEmulator` over what the emulator passes.\n handshakePayload.h = this.repoInfo_.host;\n }\n this.onHandshake_(handshakePayload);\n } else if (cmd === END_TRANSMISSION) {\n this.log_('recvd end transmission on primary');\n this.rx_ = this.secondaryConn_;\n for (let i = 0; i < this.pendingDataMessages.length; ++i) {\n this.onDataMessage_(this.pendingDataMessages[i]);\n }\n this.pendingDataMessages = [];\n this.tryCleanupConnection();\n } else if (cmd === CONTROL_SHUTDOWN) {\n // This was previously the 'onKill' callback passed to the lower-level connection\n // payload in this case is the reason for the shutdown. Generally a human-readable error\n this.onConnectionShutdown_(payload as string);\n } else if (cmd === CONTROL_RESET) {\n // payload in this case is the host we should contact\n this.onReset_(payload as string);\n } else if (cmd === CONTROL_ERROR) {\n error('Server Error: ' + payload);\n } else if (cmd === CONTROL_PONG) {\n this.log_('got pong on primary.');\n this.onPrimaryResponse_();\n this.sendPingOnPrimaryIfNecessary_();\n } else {\n error('Unknown control packet command: ' + cmd);\n }\n }\n }\n\n /**\n * @param handshake - The handshake data returned from the server\n */\n private onHandshake_(handshake: {\n ts: number;\n v: string;\n h: string;\n s: string;\n }): void {\n const timestamp = handshake.ts;\n const version = handshake.v;\n const host = handshake.h;\n this.sessionId = handshake.s;\n this.repoInfo_.host = host;\n // if we've already closed the connection, then don't bother trying to progress further\n if (this.state_ === RealtimeState.CONNECTING) {\n this.conn_.start();\n this.onConnectionEstablished_(this.conn_, timestamp);\n if (PROTOCOL_VERSION !== version) {\n warn('Protocol version mismatch detected');\n }\n // TODO: do we want to upgrade? when? maybe a delay?\n this.tryStartUpgrade_();\n }\n }\n\n private tryStartUpgrade_() {\n const conn = this.transportManager_.upgradeTransport();\n if (conn) {\n this.startUpgrade_(conn);\n }\n }\n\n private startUpgrade_(conn: TransportConstructor) {\n this.secondaryConn_ = new conn(\n this.nextTransportId_(),\n this.repoInfo_,\n this.applicationId_,\n this.appCheckToken_,\n this.authToken_,\n this.sessionId\n );\n // For certain transports (WebSockets), we need to send and receive several messages back and forth before we\n // can consider the transport healthy.\n this.secondaryResponsesRequired_ =\n conn['responsesRequiredToBeHealthy'] || 0;\n\n const onMessage = this.connReceiver_(this.secondaryConn_);\n const onDisconnect = this.disconnReceiver_(this.secondaryConn_);\n this.secondaryConn_.open(onMessage, onDisconnect);\n\n // If we haven't successfully upgraded after UPGRADE_TIMEOUT, give up and kill the secondary.\n setTimeoutNonBlocking(() => {\n if (this.secondaryConn_) {\n this.log_('Timed out trying to upgrade.');\n this.secondaryConn_.close();\n }\n }, Math.floor(UPGRADE_TIMEOUT));\n }\n\n private onReset_(host: string) {\n this.log_('Reset packet received. New host: ' + host);\n this.repoInfo_.host = host;\n // TODO: if we're already \"connected\", we need to trigger a disconnect at the next layer up.\n // We don't currently support resets after the connection has already been established\n if (this.state_ === RealtimeState.CONNECTED) {\n this.close();\n } else {\n // Close whatever connections we have open and start again.\n this.closeConnections_();\n this.start_();\n }\n }\n\n private onConnectionEstablished_(conn: Transport, timestamp: number) {\n this.log_('Realtime connection established.');\n this.conn_ = conn;\n this.state_ = RealtimeState.CONNECTED;\n\n if (this.onReady_) {\n this.onReady_(timestamp, this.sessionId);\n this.onReady_ = null;\n }\n\n // If after 5 seconds we haven't sent enough requests to the server to get the connection healthy,\n // send some pings.\n if (this.primaryResponsesRequired_ === 0) {\n this.log_('Primary connection is healthy.');\n this.isHealthy_ = true;\n } else {\n setTimeoutNonBlocking(() => {\n this.sendPingOnPrimaryIfNecessary_();\n }, Math.floor(DELAY_BEFORE_SENDING_EXTRA_REQUESTS));\n }\n }\n\n private sendPingOnPrimaryIfNecessary_() {\n // If the connection isn't considered healthy yet, we'll send a noop ping packet request.\n if (!this.isHealthy_ && this.state_ === RealtimeState.CONNECTED) {\n this.log_('sending ping on primary.');\n this.sendData_({ t: 'c', d: { t: PING, d: {} } });\n }\n }\n\n private onSecondaryConnectionLost_() {\n const conn = this.secondaryConn_;\n this.secondaryConn_ = null;\n if (this.tx_ === conn || this.rx_ === conn) {\n // we are relying on this connection already in some capacity. Therefore, a failure is real\n this.close();\n }\n }\n\n /**\n * @param everConnected - Whether or not the connection ever reached a server. Used to determine if\n * we should flush the host cache\n */\n private onConnectionLost_(everConnected: boolean) {\n this.conn_ = null;\n\n // NOTE: IF you're seeing a Firefox error for this line, I think it might be because it's getting\n // called on window close and RealtimeState.CONNECTING is no longer defined. Just a guess.\n if (!everConnected && this.state_ === RealtimeState.CONNECTING) {\n this.log_('Realtime connection failed.');\n // Since we failed to connect at all, clear any cached entry for this namespace in case the machine went away\n if (this.repoInfo_.isCacheableHost()) {\n PersistentStorage.remove('host:' + this.repoInfo_.host);\n // reset the internal host to what we would show the user, i.e. .firebaseio.com\n this.repoInfo_.internalHost = this.repoInfo_.host;\n }\n } else if (this.state_ === RealtimeState.CONNECTED) {\n this.log_('Realtime connection lost.');\n }\n\n this.close();\n }\n\n private onConnectionShutdown_(reason: string) {\n this.log_('Connection shutdown command received. Shutting down...');\n\n if (this.onKill_) {\n this.onKill_(reason);\n this.onKill_ = null;\n }\n\n // We intentionally don't want to fire onDisconnect (kill is a different case),\n // so clear the callback.\n this.onDisconnect_ = null;\n\n this.close();\n }\n\n private sendData_(data: object) {\n if (this.state_ !== RealtimeState.CONNECTED) {\n throw 'Connection is not connected';\n } else {\n this.tx_.send(data);\n }\n }\n\n /**\n * Cleans up this connection, calling the appropriate callbacks\n */\n close() {\n if (this.state_ !== RealtimeState.DISCONNECTED) {\n this.log_('Closing realtime connection.');\n this.state_ = RealtimeState.DISCONNECTED;\n\n this.closeConnections_();\n\n if (this.onDisconnect_) {\n this.onDisconnect_();\n this.onDisconnect_ = null;\n }\n }\n }\n\n private closeConnections_() {\n this.log_('Shutting down all connections');\n if (this.conn_) {\n this.conn_.close();\n this.conn_ = null;\n }\n\n if (this.secondaryConn_) {\n this.secondaryConn_.close();\n this.secondaryConn_ = null;\n }\n\n if (this.healthyTimeout_) {\n clearTimeout(this.healthyTimeout_);\n this.healthyTimeout_ = null;\n }\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { QueryContext } from './view/EventRegistration';\n\n/**\n * Interface defining the set of actions that can be performed against the Firebase server\n * (basically corresponds to our wire protocol).\n *\n * @interface\n */\nexport abstract class ServerActions {\n abstract listen(\n query: QueryContext,\n currentHashFn: () => string,\n tag: number | null,\n onComplete: (a: string, b: unknown) => void\n ): void;\n\n /**\n * Remove a listen.\n */\n abstract unlisten(query: QueryContext, tag: number | null): void;\n\n /**\n * Get the server value satisfying this query.\n */\n abstract get(query: QueryContext): Promise;\n\n put(\n pathString: string,\n data: unknown,\n onComplete?: (a: string, b: string) => void,\n hash?: string\n ) {}\n\n merge(\n pathString: string,\n data: unknown,\n onComplete: (a: string, b: string | null) => void,\n hash?: string\n ) {}\n\n /**\n * Refreshes the auth token for the current connection.\n * @param token - The authentication token\n */\n refreshAuthToken(token: string) {}\n\n /**\n * Refreshes the app check token for the current connection.\n * @param token The app check token\n */\n refreshAppCheckToken(token: string) {}\n\n onDisconnectPut(\n pathString: string,\n data: unknown,\n onComplete?: (a: string, b: string) => void\n ) {}\n\n onDisconnectMerge(\n pathString: string,\n data: unknown,\n onComplete?: (a: string, b: string) => void\n ) {}\n\n onDisconnectCancel(\n pathString: string,\n onComplete?: (a: string, b: string) => void\n ) {}\n\n reportStats(stats: { [k: string]: unknown }) {}\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { assert } from '@firebase/util';\n\n/**\n * Base class to be used if you want to emit events. Call the constructor with\n * the set of allowed event names.\n */\nexport abstract class EventEmitter {\n private listeners_: {\n [eventType: string]: Array<{\n callback(...args: unknown[]): void;\n context: unknown;\n }>;\n } = {};\n\n constructor(private allowedEvents_: string[]) {\n assert(\n Array.isArray(allowedEvents_) && allowedEvents_.length > 0,\n 'Requires a non-empty array'\n );\n }\n\n /**\n * To be overridden by derived classes in order to fire an initial event when\n * somebody subscribes for data.\n *\n * @returns {Array.<*>} Array of parameters to trigger initial event with.\n */\n abstract getInitialEvent(eventType: string): unknown[];\n\n /**\n * To be called by derived classes to trigger events.\n */\n protected trigger(eventType: string, ...varArgs: unknown[]) {\n if (Array.isArray(this.listeners_[eventType])) {\n // Clone the list, since callbacks could add/remove listeners.\n const listeners = [...this.listeners_[eventType]];\n\n for (let i = 0; i < listeners.length; i++) {\n listeners[i].callback.apply(listeners[i].context, varArgs);\n }\n }\n }\n\n on(eventType: string, callback: (a: unknown) => void, context: unknown) {\n this.validateEventType_(eventType);\n this.listeners_[eventType] = this.listeners_[eventType] || [];\n this.listeners_[eventType].push({ callback, context });\n\n const eventData = this.getInitialEvent(eventType);\n if (eventData) {\n callback.apply(context, eventData);\n }\n }\n\n off(eventType: string, callback: (a: unknown) => void, context: unknown) {\n this.validateEventType_(eventType);\n const listeners = this.listeners_[eventType] || [];\n for (let i = 0; i < listeners.length; i++) {\n if (\n listeners[i].callback === callback &&\n (!context || context === listeners[i].context)\n ) {\n listeners.splice(i, 1);\n return;\n }\n }\n }\n\n private validateEventType_(eventType: string) {\n assert(\n this.allowedEvents_.find(et => {\n return et === eventType;\n }),\n 'Unknown event: ' + eventType\n );\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { assert, isMobileCordova } from '@firebase/util';\n\nimport { EventEmitter } from './EventEmitter';\n\n/**\n * Monitors online state (as reported by window.online/offline events).\n *\n * The expectation is that this could have many false positives (thinks we are online\n * when we're not), but no false negatives. So we can safely use it to determine when\n * we definitely cannot reach the internet.\n */\nexport class OnlineMonitor extends EventEmitter {\n private online_ = true;\n\n static getInstance() {\n return new OnlineMonitor();\n }\n\n constructor() {\n super(['online']);\n\n // We've had repeated complaints that Cordova apps can get stuck \"offline\", e.g.\n // https://forum.ionicframework.com/t/firebase-connection-is-lost-and-never-come-back/43810\n // It would seem that the 'online' event does not always fire consistently. So we disable it\n // for Cordova.\n if (\n typeof window !== 'undefined' &&\n typeof window.addEventListener !== 'undefined' &&\n !isMobileCordova()\n ) {\n window.addEventListener(\n 'online',\n () => {\n if (!this.online_) {\n this.online_ = true;\n this.trigger('online', true);\n }\n },\n false\n );\n\n window.addEventListener(\n 'offline',\n () => {\n if (this.online_) {\n this.online_ = false;\n this.trigger('online', false);\n }\n },\n false\n );\n }\n }\n\n getInitialEvent(eventType: string): boolean[] {\n assert(eventType === 'online', 'Unknown event type: ' + eventType);\n return [this.online_];\n }\n\n currentlyOnline(): boolean {\n return this.online_;\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { stringLength } from '@firebase/util';\n\nimport { nameCompare } from './util';\n\n/** Maximum key depth. */\nconst MAX_PATH_DEPTH = 32;\n\n/** Maximum number of (UTF8) bytes in a Firebase path. */\nconst MAX_PATH_LENGTH_BYTES = 768;\n\n/**\n * An immutable object representing a parsed path. It's immutable so that you\n * can pass them around to other functions without worrying about them changing\n * it.\n */\n\nexport class Path {\n pieces_: string[];\n pieceNum_: number;\n\n /**\n * @param pathOrString - Path string to parse, or another path, or the raw\n * tokens array\n */\n constructor(pathOrString: string | string[], pieceNum?: number) {\n if (pieceNum === void 0) {\n this.pieces_ = (pathOrString as string).split('/');\n\n // Remove empty pieces.\n let copyTo = 0;\n for (let i = 0; i < this.pieces_.length; i++) {\n if (this.pieces_[i].length > 0) {\n this.pieces_[copyTo] = this.pieces_[i];\n copyTo++;\n }\n }\n this.pieces_.length = copyTo;\n\n this.pieceNum_ = 0;\n } else {\n this.pieces_ = pathOrString as string[];\n this.pieceNum_ = pieceNum;\n }\n }\n\n toString(): string {\n let pathString = '';\n for (let i = this.pieceNum_; i < this.pieces_.length; i++) {\n if (this.pieces_[i] !== '') {\n pathString += '/' + this.pieces_[i];\n }\n }\n\n return pathString || '/';\n }\n}\n\nexport function newEmptyPath(): Path {\n return new Path('');\n}\n\nexport function pathGetFront(path: Path): string | null {\n if (path.pieceNum_ >= path.pieces_.length) {\n return null;\n }\n\n return path.pieces_[path.pieceNum_];\n}\n\n/**\n * @returns The number of segments in this path\n */\nexport function pathGetLength(path: Path): number {\n return path.pieces_.length - path.pieceNum_;\n}\n\nexport function pathPopFront(path: Path): Path {\n let pieceNum = path.pieceNum_;\n if (pieceNum < path.pieces_.length) {\n pieceNum++;\n }\n return new Path(path.pieces_, pieceNum);\n}\n\nexport function pathGetBack(path: Path): string | null {\n if (path.pieceNum_ < path.pieces_.length) {\n return path.pieces_[path.pieces_.length - 1];\n }\n\n return null;\n}\n\nexport function pathToUrlEncodedString(path: Path): string {\n let pathString = '';\n for (let i = path.pieceNum_; i < path.pieces_.length; i++) {\n if (path.pieces_[i] !== '') {\n pathString += '/' + encodeURIComponent(String(path.pieces_[i]));\n }\n }\n\n return pathString || '/';\n}\n\n/**\n * Shallow copy of the parts of the path.\n *\n */\nexport function pathSlice(path: Path, begin: number = 0): string[] {\n return path.pieces_.slice(path.pieceNum_ + begin);\n}\n\nexport function pathParent(path: Path): Path | null {\n if (path.pieceNum_ >= path.pieces_.length) {\n return null;\n }\n\n const pieces = [];\n for (let i = path.pieceNum_; i < path.pieces_.length - 1; i++) {\n pieces.push(path.pieces_[i]);\n }\n\n return new Path(pieces, 0);\n}\n\nexport function pathChild(path: Path, childPathObj: string | Path): Path {\n const pieces = [];\n for (let i = path.pieceNum_; i < path.pieces_.length; i++) {\n pieces.push(path.pieces_[i]);\n }\n\n if (childPathObj instanceof Path) {\n for (let i = childPathObj.pieceNum_; i < childPathObj.pieces_.length; i++) {\n pieces.push(childPathObj.pieces_[i]);\n }\n } else {\n const childPieces = childPathObj.split('/');\n for (let i = 0; i < childPieces.length; i++) {\n if (childPieces[i].length > 0) {\n pieces.push(childPieces[i]);\n }\n }\n }\n\n return new Path(pieces, 0);\n}\n\n/**\n * @returns True if there are no segments in this path\n */\nexport function pathIsEmpty(path: Path): boolean {\n return path.pieceNum_ >= path.pieces_.length;\n}\n\n/**\n * @returns The path from outerPath to innerPath\n */\nexport function newRelativePath(outerPath: Path, innerPath: Path): Path {\n const outer = pathGetFront(outerPath),\n inner = pathGetFront(innerPath);\n if (outer === null) {\n return innerPath;\n } else if (outer === inner) {\n return newRelativePath(pathPopFront(outerPath), pathPopFront(innerPath));\n } else {\n throw new Error(\n 'INTERNAL ERROR: innerPath (' +\n innerPath +\n ') is not within ' +\n 'outerPath (' +\n outerPath +\n ')'\n );\n }\n}\n\n/**\n * @returns -1, 0, 1 if left is less, equal, or greater than the right.\n */\nexport function pathCompare(left: Path, right: Path): number {\n const leftKeys = pathSlice(left, 0);\n const rightKeys = pathSlice(right, 0);\n for (let i = 0; i < leftKeys.length && i < rightKeys.length; i++) {\n const cmp = nameCompare(leftKeys[i], rightKeys[i]);\n if (cmp !== 0) {\n return cmp;\n }\n }\n if (leftKeys.length === rightKeys.length) {\n return 0;\n }\n return leftKeys.length < rightKeys.length ? -1 : 1;\n}\n\n/**\n * @returns true if paths are the same.\n */\nexport function pathEquals(path: Path, other: Path): boolean {\n if (pathGetLength(path) !== pathGetLength(other)) {\n return false;\n }\n\n for (\n let i = path.pieceNum_, j = other.pieceNum_;\n i <= path.pieces_.length;\n i++, j++\n ) {\n if (path.pieces_[i] !== other.pieces_[j]) {\n return false;\n }\n }\n\n return true;\n}\n\n/**\n * @returns True if this path is a parent of (or the same as) other\n */\nexport function pathContains(path: Path, other: Path): boolean {\n let i = path.pieceNum_;\n let j = other.pieceNum_;\n if (pathGetLength(path) > pathGetLength(other)) {\n return false;\n }\n while (i < path.pieces_.length) {\n if (path.pieces_[i] !== other.pieces_[j]) {\n return false;\n }\n ++i;\n ++j;\n }\n return true;\n}\n\n/**\n * Dynamic (mutable) path used to count path lengths.\n *\n * This class is used to efficiently check paths for valid\n * length (in UTF8 bytes) and depth (used in path validation).\n *\n * Throws Error exception if path is ever invalid.\n *\n * The definition of a path always begins with '/'.\n */\nexport class ValidationPath {\n parts_: string[];\n /** Initialize to number of '/' chars needed in path. */\n byteLength_: number;\n\n /**\n * @param path - Initial Path.\n * @param errorPrefix_ - Prefix for any error messages.\n */\n constructor(path: Path, public errorPrefix_: string) {\n this.parts_ = pathSlice(path, 0);\n /** Initialize to number of '/' chars needed in path. */\n this.byteLength_ = Math.max(1, this.parts_.length);\n\n for (let i = 0; i < this.parts_.length; i++) {\n this.byteLength_ += stringLength(this.parts_[i]);\n }\n validationPathCheckValid(this);\n }\n}\n\nexport function validationPathPush(\n validationPath: ValidationPath,\n child: string\n): void {\n // Count the needed '/'\n if (validationPath.parts_.length > 0) {\n validationPath.byteLength_ += 1;\n }\n validationPath.parts_.push(child);\n validationPath.byteLength_ += stringLength(child);\n validationPathCheckValid(validationPath);\n}\n\nexport function validationPathPop(validationPath: ValidationPath): void {\n const last = validationPath.parts_.pop();\n validationPath.byteLength_ -= stringLength(last);\n // Un-count the previous '/'\n if (validationPath.parts_.length > 0) {\n validationPath.byteLength_ -= 1;\n }\n}\n\nfunction validationPathCheckValid(validationPath: ValidationPath): void {\n if (validationPath.byteLength_ > MAX_PATH_LENGTH_BYTES) {\n throw new Error(\n validationPath.errorPrefix_ +\n 'has a key path longer than ' +\n MAX_PATH_LENGTH_BYTES +\n ' bytes (' +\n validationPath.byteLength_ +\n ').'\n );\n }\n if (validationPath.parts_.length > MAX_PATH_DEPTH) {\n throw new Error(\n validationPath.errorPrefix_ +\n 'path specified exceeds the maximum depth that can be written (' +\n MAX_PATH_DEPTH +\n ') or object contains a cycle ' +\n validationPathToErrorString(validationPath)\n );\n }\n}\n\n/**\n * String for use in error messages - uses '.' notation for path.\n */\nexport function validationPathToErrorString(\n validationPath: ValidationPath\n): string {\n if (validationPath.parts_.length === 0) {\n return '';\n }\n return \"in property '\" + validationPath.parts_.join('.') + \"'\";\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { assert } from '@firebase/util';\n\nimport { EventEmitter } from './EventEmitter';\n\ndeclare const document: Document;\n\nexport class VisibilityMonitor extends EventEmitter {\n private visible_: boolean;\n\n static getInstance() {\n return new VisibilityMonitor();\n }\n\n constructor() {\n super(['visible']);\n let hidden: string;\n let visibilityChange: string;\n if (\n typeof document !== 'undefined' &&\n typeof document.addEventListener !== 'undefined'\n ) {\n if (typeof document['hidden'] !== 'undefined') {\n // Opera 12.10 and Firefox 18 and later support\n visibilityChange = 'visibilitychange';\n hidden = 'hidden';\n } else if (typeof document['mozHidden'] !== 'undefined') {\n visibilityChange = 'mozvisibilitychange';\n hidden = 'mozHidden';\n } else if (typeof document['msHidden'] !== 'undefined') {\n visibilityChange = 'msvisibilitychange';\n hidden = 'msHidden';\n } else if (typeof document['webkitHidden'] !== 'undefined') {\n visibilityChange = 'webkitvisibilitychange';\n hidden = 'webkitHidden';\n }\n }\n\n // Initially, we always assume we are visible. This ensures that in browsers\n // without page visibility support or in cases where we are never visible\n // (e.g. chrome extension), we act as if we are visible, i.e. don't delay\n // reconnects\n this.visible_ = true;\n\n if (visibilityChange) {\n document.addEventListener(\n visibilityChange,\n () => {\n const visible = !document[hidden];\n if (visible !== this.visible_) {\n this.visible_ = visible;\n this.trigger('visible', visible);\n }\n },\n false\n );\n }\n }\n\n getInitialEvent(eventType: string): boolean[] {\n assert(eventType === 'visible', 'Unknown event type: ' + eventType);\n return [this.visible_];\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport {\n assert,\n contains,\n Deferred,\n isEmpty,\n isMobileCordova,\n isNodeSdk,\n isReactNative,\n isValidFormat,\n safeGet,\n stringify,\n isAdmin\n} from '@firebase/util';\n\nimport { Connection } from '../realtime/Connection';\n\nimport { AppCheckTokenProvider } from './AppCheckTokenProvider';\nimport { AuthTokenProvider } from './AuthTokenProvider';\nimport { RepoInfo } from './RepoInfo';\nimport { ServerActions } from './ServerActions';\nimport { OnlineMonitor } from './util/OnlineMonitor';\nimport { Path } from './util/Path';\nimport { error, log, logWrapper, warn, ObjectToUniqueKey } from './util/util';\nimport { VisibilityMonitor } from './util/VisibilityMonitor';\nimport { SDK_VERSION } from './version';\nimport { QueryContext } from './view/EventRegistration';\n\nconst RECONNECT_MIN_DELAY = 1000;\nconst RECONNECT_MAX_DELAY_DEFAULT = 60 * 5 * 1000; // 5 minutes in milliseconds (Case: 1858)\nconst RECONNECT_MAX_DELAY_FOR_ADMINS = 30 * 1000; // 30 seconds for admin clients (likely to be a backend server)\nconst RECONNECT_DELAY_MULTIPLIER = 1.3;\nconst RECONNECT_DELAY_RESET_TIMEOUT = 30000; // Reset delay back to MIN_DELAY after being connected for 30sec.\nconst SERVER_KILL_INTERRUPT_REASON = 'server_kill';\n\n// If auth fails repeatedly, we'll assume something is wrong and log a warning / back off.\nconst INVALID_TOKEN_THRESHOLD = 3;\n\ninterface ListenSpec {\n onComplete(s: string, p?: unknown): void;\n\n hashFn(): string;\n\n query: QueryContext;\n tag: number | null;\n}\n\ninterface OnDisconnectRequest {\n pathString: string;\n action: string;\n data: unknown;\n onComplete?: (a: string, b: string) => void;\n}\n\ninterface OutstandingPut {\n action: string;\n request: object;\n queued?: boolean;\n onComplete: (a: string, b?: string) => void;\n}\n\ninterface OutstandingGet {\n request: object;\n onComplete: (response: { [k: string]: unknown }) => void;\n}\n\n/**\n * Firebase connection. Abstracts wire protocol and handles reconnecting.\n *\n * NOTE: All JSON objects sent to the realtime connection must have property names enclosed\n * in quotes to make sure the closure compiler does not minify them.\n */\nexport class PersistentConnection extends ServerActions {\n // Used for diagnostic logging.\n id = PersistentConnection.nextPersistentConnectionId_++;\n private log_ = logWrapper('p:' + this.id + ':');\n\n private interruptReasons_: { [reason: string]: boolean } = {};\n private readonly listens: Map<\n /* path */ string,\n Map* queryId */ string, ListenSpec>\n > = new Map();\n private outstandingPuts_: OutstandingPut[] = [];\n private outstandingGets_: OutstandingGet[] = [];\n private outstandingPutCount_ = 0;\n private outstandingGetCount_ = 0;\n private onDisconnectRequestQueue_: OnDisconnectRequest[] = [];\n private connected_ = false;\n private reconnectDelay_ = RECONNECT_MIN_DELAY;\n private maxReconnectDelay_ = RECONNECT_MAX_DELAY_DEFAULT;\n private securityDebugCallback_: ((a: object) => void) | null = null;\n lastSessionId: string | null = null;\n\n private establishConnectionTimer_: number | null = null;\n\n private visible_: boolean = false;\n\n // Before we get connected, we keep a queue of pending messages to send.\n private requestCBHash_: { [k: number]: (a: unknown) => void } = {};\n private requestNumber_ = 0;\n\n private realtime_: {\n sendRequest(a: object): void;\n close(): void;\n } | null = null;\n\n private authToken_: string | null = null;\n private appCheckToken_: string | null = null;\n private forceTokenRefresh_ = false;\n private invalidAuthTokenCount_ = 0;\n private invalidAppCheckTokenCount_ = 0;\n\n private firstConnection_ = true;\n private lastConnectionAttemptTime_: number | null = null;\n private lastConnectionEstablishedTime_: number | null = null;\n\n private static nextPersistentConnectionId_ = 0;\n\n /**\n * Counter for number of connections created. Mainly used for tagging in the logs\n */\n private static nextConnectionId_ = 0;\n\n /**\n * @param repoInfo_ - Data about the namespace we are connecting to\n * @param applicationId_ - The Firebase App ID for this project\n * @param onDataUpdate_ - A callback for new data from the server\n */\n constructor(\n private repoInfo_: RepoInfo,\n private applicationId_: string,\n private onDataUpdate_: (\n a: string,\n b: unknown,\n c: boolean,\n d: number | null\n ) => void,\n private onConnectStatus_: (a: boolean) => void,\n private onServerInfoUpdate_: (a: unknown) => void,\n private authTokenProvider_: AuthTokenProvider,\n private appCheckTokenProvider_: AppCheckTokenProvider,\n private authOverride_?: object | null\n ) {\n super();\n\n if (authOverride_ && !isNodeSdk()) {\n throw new Error(\n 'Auth override specified in options, but not supported on non Node.js platforms'\n );\n }\n\n VisibilityMonitor.getInstance().on('visible', this.onVisible_, this);\n\n if (repoInfo_.host.indexOf('fblocal') === -1) {\n OnlineMonitor.getInstance().on('online', this.onOnline_, this);\n }\n }\n\n protected sendRequest(\n action: string,\n body: unknown,\n onResponse?: (a: unknown) => void\n ) {\n const curReqNum = ++this.requestNumber_;\n\n const msg = { r: curReqNum, a: action, b: body };\n this.log_(stringify(msg));\n assert(\n this.connected_,\n \"sendRequest call when we're not connected not allowed.\"\n );\n this.realtime_.sendRequest(msg);\n if (onResponse) {\n this.requestCBHash_[curReqNum] = onResponse;\n }\n }\n\n get(query: QueryContext): Promise {\n this.initConnection_();\n\n const deferred = new Deferred();\n const request = {\n p: query._path.toString(),\n q: query._queryObject\n };\n const outstandingGet = {\n action: 'g',\n request,\n onComplete: (message: { [k: string]: unknown }) => {\n const payload = message['d'] as string;\n if (message['s'] === 'ok') {\n deferred.resolve(payload);\n } else {\n deferred.reject(payload);\n }\n }\n };\n this.outstandingGets_.push(outstandingGet);\n this.outstandingGetCount_++;\n const index = this.outstandingGets_.length - 1;\n\n if (this.connected_) {\n this.sendGet_(index);\n }\n\n return deferred.promise;\n }\n\n listen(\n query: QueryContext,\n currentHashFn: () => string,\n tag: number | null,\n onComplete: (a: string, b: unknown) => void\n ) {\n this.initConnection_();\n\n const queryId = query._queryIdentifier;\n const pathString = query._path.toString();\n this.log_('Listen called for ' + pathString + ' ' + queryId);\n if (!this.listens.has(pathString)) {\n this.listens.set(pathString, new Map());\n }\n assert(\n query._queryParams.isDefault() || !query._queryParams.loadsAllData(),\n 'listen() called for non-default but complete query'\n );\n assert(\n !this.listens.get(pathString)!.has(queryId),\n `listen() called twice for same path/queryId.`\n );\n const listenSpec: ListenSpec = {\n onComplete,\n hashFn: currentHashFn,\n query,\n tag\n };\n this.listens.get(pathString)!.set(queryId, listenSpec);\n\n if (this.connected_) {\n this.sendListen_(listenSpec);\n }\n }\n\n private sendGet_(index: number) {\n const get = this.outstandingGets_[index];\n this.sendRequest('g', get.request, (message: { [k: string]: unknown }) => {\n delete this.outstandingGets_[index];\n this.outstandingGetCount_--;\n if (this.outstandingGetCount_ === 0) {\n this.outstandingGets_ = [];\n }\n if (get.onComplete) {\n get.onComplete(message);\n }\n });\n }\n\n private sendListen_(listenSpec: ListenSpec) {\n const query = listenSpec.query;\n const pathString = query._path.toString();\n const queryId = query._queryIdentifier;\n this.log_('Listen on ' + pathString + ' for ' + queryId);\n const req: { [k: string]: unknown } = { /*path*/ p: pathString };\n\n const action = 'q';\n\n // Only bother to send query if it's non-default.\n if (listenSpec.tag) {\n req['q'] = query._queryObject;\n req['t'] = listenSpec.tag;\n }\n\n req[/*hash*/ 'h'] = listenSpec.hashFn();\n\n this.sendRequest(action, req, (message: { [k: string]: unknown }) => {\n const payload: unknown = message[/*data*/ 'd'];\n const status = message[/*status*/ 's'] as string;\n\n // print warnings in any case...\n PersistentConnection.warnOnListenWarnings_(payload, query);\n\n const currentListenSpec =\n this.listens.get(pathString) &&\n this.listens.get(pathString)!.get(queryId);\n // only trigger actions if the listen hasn't been removed and readded\n if (currentListenSpec === listenSpec) {\n this.log_('listen response', message);\n\n if (status !== 'ok') {\n this.removeListen_(pathString, queryId);\n }\n\n if (listenSpec.onComplete) {\n listenSpec.onComplete(status, payload);\n }\n }\n });\n }\n\n private static warnOnListenWarnings_(payload: unknown, query: QueryContext) {\n if (payload && typeof payload === 'object' && contains(payload, 'w')) {\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n const warnings = safeGet(payload as any, 'w');\n if (Array.isArray(warnings) && ~warnings.indexOf('no_index')) {\n const indexSpec =\n '\".indexOn\": \"' + query._queryParams.getIndex().toString() + '\"';\n const indexPath = query._path.toString();\n warn(\n `Using an unspecified index. Your data will be downloaded and ` +\n `filtered on the client. Consider adding ${indexSpec} at ` +\n `${indexPath} to your security rules for better performance.`\n );\n }\n }\n }\n\n refreshAuthToken(token: string) {\n this.authToken_ = token;\n this.log_('Auth token refreshed');\n if (this.authToken_) {\n this.tryAuth();\n } else {\n //If we're connected we want to let the server know to unauthenticate us. If we're not connected, simply delete\n //the credential so we dont become authenticated next time we connect.\n if (this.connected_) {\n this.sendRequest('unauth', {}, () => {});\n }\n }\n\n this.reduceReconnectDelayIfAdminCredential_(token);\n }\n\n private reduceReconnectDelayIfAdminCredential_(credential: string) {\n // NOTE: This isn't intended to be bulletproof (a malicious developer can always just modify the client).\n // Additionally, we don't bother resetting the max delay back to the default if auth fails / expires.\n const isFirebaseSecret = credential && credential.length === 40;\n if (isFirebaseSecret || isAdmin(credential)) {\n this.log_(\n 'Admin auth credential detected. Reducing max reconnect time.'\n );\n this.maxReconnectDelay_ = RECONNECT_MAX_DELAY_FOR_ADMINS;\n }\n }\n\n refreshAppCheckToken(token: string | null) {\n this.appCheckToken_ = token;\n this.log_('App check token refreshed');\n if (this.appCheckToken_) {\n this.tryAppCheck();\n } else {\n //If we're connected we want to let the server know to unauthenticate us.\n //If we're not connected, simply delete the credential so we dont become\n // authenticated next time we connect.\n if (this.connected_) {\n this.sendRequest('unappeck', {}, () => {});\n }\n }\n }\n\n /**\n * Attempts to authenticate with the given credentials. If the authentication attempt fails, it's triggered like\n * a auth revoked (the connection is closed).\n */\n tryAuth() {\n if (this.connected_ && this.authToken_) {\n const token = this.authToken_;\n const authMethod = isValidFormat(token) ? 'auth' : 'gauth';\n const requestData: { [k: string]: unknown } = { cred: token };\n if (this.authOverride_ === null) {\n requestData['noauth'] = true;\n } else if (typeof this.authOverride_ === 'object') {\n requestData['authvar'] = this.authOverride_;\n }\n this.sendRequest(\n authMethod,\n requestData,\n (res: { [k: string]: unknown }) => {\n const status = res[/*status*/ 's'] as string;\n const data = (res[/*data*/ 'd'] as string) || 'error';\n\n if (this.authToken_ === token) {\n if (status === 'ok') {\n this.invalidAuthTokenCount_ = 0;\n } else {\n // Triggers reconnect and force refresh for auth token\n this.onAuthRevoked_(status, data);\n }\n }\n }\n );\n }\n }\n\n /**\n * Attempts to authenticate with the given token. If the authentication\n * attempt fails, it's triggered like the token was revoked (the connection is\n * closed).\n */\n tryAppCheck() {\n if (this.connected_ && this.appCheckToken_) {\n this.sendRequest(\n 'appcheck',\n { 'token': this.appCheckToken_ },\n (res: { [k: string]: unknown }) => {\n const status = res[/*status*/ 's'] as string;\n const data = (res[/*data*/ 'd'] as string) || 'error';\n if (status === 'ok') {\n this.invalidAppCheckTokenCount_ = 0;\n } else {\n this.onAppCheckRevoked_(status, data);\n }\n }\n );\n }\n }\n\n /**\n * @inheritDoc\n */\n unlisten(query: QueryContext, tag: number | null) {\n const pathString = query._path.toString();\n const queryId = query._queryIdentifier;\n\n this.log_('Unlisten called for ' + pathString + ' ' + queryId);\n\n assert(\n query._queryParams.isDefault() || !query._queryParams.loadsAllData(),\n 'unlisten() called for non-default but complete query'\n );\n const listen = this.removeListen_(pathString, queryId);\n if (listen && this.connected_) {\n this.sendUnlisten_(pathString, queryId, query._queryObject, tag);\n }\n }\n\n private sendUnlisten_(\n pathString: string,\n queryId: string,\n queryObj: object,\n tag: number | null\n ) {\n this.log_('Unlisten on ' + pathString + ' for ' + queryId);\n\n const req: { [k: string]: unknown } = { /*path*/ p: pathString };\n const action = 'n';\n // Only bother sending queryId if it's non-default.\n if (tag) {\n req['q'] = queryObj;\n req['t'] = tag;\n }\n\n this.sendRequest(action, req);\n }\n\n onDisconnectPut(\n pathString: string,\n data: unknown,\n onComplete?: (a: string, b: string) => void\n ) {\n this.initConnection_();\n\n if (this.connected_) {\n this.sendOnDisconnect_('o', pathString, data, onComplete);\n } else {\n this.onDisconnectRequestQueue_.push({\n pathString,\n action: 'o',\n data,\n onComplete\n });\n }\n }\n\n onDisconnectMerge(\n pathString: string,\n data: unknown,\n onComplete?: (a: string, b: string) => void\n ) {\n this.initConnection_();\n\n if (this.connected_) {\n this.sendOnDisconnect_('om', pathString, data, onComplete);\n } else {\n this.onDisconnectRequestQueue_.push({\n pathString,\n action: 'om',\n data,\n onComplete\n });\n }\n }\n\n onDisconnectCancel(\n pathString: string,\n onComplete?: (a: string, b: string) => void\n ) {\n this.initConnection_();\n\n if (this.connected_) {\n this.sendOnDisconnect_('oc', pathString, null, onComplete);\n } else {\n this.onDisconnectRequestQueue_.push({\n pathString,\n action: 'oc',\n data: null,\n onComplete\n });\n }\n }\n\n private sendOnDisconnect_(\n action: string,\n pathString: string,\n data: unknown,\n onComplete: (a: string, b: string) => void\n ) {\n const request = { /*path*/ p: pathString, /*data*/ d: data };\n this.log_('onDisconnect ' + action, request);\n this.sendRequest(action, request, (response: { [k: string]: unknown }) => {\n if (onComplete) {\n setTimeout(() => {\n onComplete(\n response[/*status*/ 's'] as string,\n response[/* data */ 'd'] as string\n );\n }, Math.floor(0));\n }\n });\n }\n\n put(\n pathString: string,\n data: unknown,\n onComplete?: (a: string, b: string) => void,\n hash?: string\n ) {\n this.putInternal('p', pathString, data, onComplete, hash);\n }\n\n merge(\n pathString: string,\n data: unknown,\n onComplete: (a: string, b: string | null) => void,\n hash?: string\n ) {\n this.putInternal('m', pathString, data, onComplete, hash);\n }\n\n putInternal(\n action: string,\n pathString: string,\n data: unknown,\n onComplete: (a: string, b: string | null) => void,\n hash?: string\n ) {\n this.initConnection_();\n\n const request: { [k: string]: unknown } = {\n /*path*/ p: pathString,\n /*data*/ d: data\n };\n\n if (hash !== undefined) {\n request[/*hash*/ 'h'] = hash;\n }\n\n // TODO: Only keep track of the most recent put for a given path?\n this.outstandingPuts_.push({\n action,\n request,\n onComplete\n });\n\n this.outstandingPutCount_++;\n const index = this.outstandingPuts_.length - 1;\n\n if (this.connected_) {\n this.sendPut_(index);\n } else {\n this.log_('Buffering put: ' + pathString);\n }\n }\n\n private sendPut_(index: number) {\n const action = this.outstandingPuts_[index].action;\n const request = this.outstandingPuts_[index].request;\n const onComplete = this.outstandingPuts_[index].onComplete;\n this.outstandingPuts_[index].queued = this.connected_;\n\n this.sendRequest(action, request, (message: { [k: string]: unknown }) => {\n this.log_(action + ' response', message);\n\n delete this.outstandingPuts_[index];\n this.outstandingPutCount_--;\n\n // Clean up array occasionally.\n if (this.outstandingPutCount_ === 0) {\n this.outstandingPuts_ = [];\n }\n\n if (onComplete) {\n onComplete(\n message[/*status*/ 's'] as string,\n message[/* data */ 'd'] as string\n );\n }\n });\n }\n\n reportStats(stats: { [k: string]: unknown }) {\n // If we're not connected, we just drop the stats.\n if (this.connected_) {\n const request = { /*counters*/ c: stats };\n this.log_('reportStats', request);\n\n this.sendRequest(/*stats*/ 's', request, result => {\n const status = result[/*status*/ 's'];\n if (status !== 'ok') {\n const errorReason = result[/* data */ 'd'];\n this.log_('reportStats', 'Error sending stats: ' + errorReason);\n }\n });\n }\n }\n\n private onDataMessage_(message: { [k: string]: unknown }) {\n if ('r' in message) {\n // this is a response\n this.log_('from server: ' + stringify(message));\n const reqNum = message['r'] as string;\n const onResponse = this.requestCBHash_[reqNum];\n if (onResponse) {\n delete this.requestCBHash_[reqNum];\n onResponse(message[/*body*/ 'b']);\n }\n } else if ('error' in message) {\n throw 'A server-side error has occurred: ' + message['error'];\n } else if ('a' in message) {\n // a and b are action and body, respectively\n this.onDataPush_(message['a'] as string, message['b'] as {});\n }\n }\n\n private onDataPush_(action: string, body: { [k: string]: unknown }) {\n this.log_('handleServerMessage', action, body);\n if (action === 'd') {\n this.onDataUpdate_(\n body[/*path*/ 'p'] as string,\n body[/*data*/ 'd'],\n /*isMerge*/ false,\n body['t'] as number\n );\n } else if (action === 'm') {\n this.onDataUpdate_(\n body[/*path*/ 'p'] as string,\n body[/*data*/ 'd'],\n /*isMerge=*/ true,\n body['t'] as number\n );\n } else if (action === 'c') {\n this.onListenRevoked_(\n body[/*path*/ 'p'] as string,\n body[/*query*/ 'q'] as unknown[]\n );\n } else if (action === 'ac') {\n this.onAuthRevoked_(\n body[/*status code*/ 's'] as string,\n body[/* explanation */ 'd'] as string\n );\n } else if (action === 'apc') {\n this.onAppCheckRevoked_(\n body[/*status code*/ 's'] as string,\n body[/* explanation */ 'd'] as string\n );\n } else if (action === 'sd') {\n this.onSecurityDebugPacket_(body);\n } else {\n error(\n 'Unrecognized action received from server: ' +\n stringify(action) +\n '\\nAre you using the latest client?'\n );\n }\n }\n\n private onReady_(timestamp: number, sessionId: string) {\n this.log_('connection ready');\n this.connected_ = true;\n this.lastConnectionEstablishedTime_ = new Date().getTime();\n this.handleTimestamp_(timestamp);\n this.lastSessionId = sessionId;\n if (this.firstConnection_) {\n this.sendConnectStats_();\n }\n this.restoreState_();\n this.firstConnection_ = false;\n this.onConnectStatus_(true);\n }\n\n private scheduleConnect_(timeout: number) {\n assert(\n !this.realtime_,\n \"Scheduling a connect when we're already connected/ing?\"\n );\n\n if (this.establishConnectionTimer_) {\n clearTimeout(this.establishConnectionTimer_);\n }\n\n // NOTE: Even when timeout is 0, it's important to do a setTimeout to work around an infuriating \"Security Error\" in\n // Firefox when trying to write to our long-polling iframe in some scenarios (e.g. Forge or our unit tests).\n\n this.establishConnectionTimer_ = setTimeout(() => {\n this.establishConnectionTimer_ = null;\n this.establishConnection_();\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n }, Math.floor(timeout)) as any;\n }\n\n private initConnection_() {\n if (!this.realtime_ && this.firstConnection_) {\n this.scheduleConnect_(0);\n }\n }\n\n private onVisible_(visible: boolean) {\n // NOTE: Tabbing away and back to a window will defeat our reconnect backoff, but I think that's fine.\n if (\n visible &&\n !this.visible_ &&\n this.reconnectDelay_ === this.maxReconnectDelay_\n ) {\n this.log_('Window became visible. Reducing delay.');\n this.reconnectDelay_ = RECONNECT_MIN_DELAY;\n\n if (!this.realtime_) {\n this.scheduleConnect_(0);\n }\n }\n this.visible_ = visible;\n }\n\n private onOnline_(online: boolean) {\n if (online) {\n this.log_('Browser went online.');\n this.reconnectDelay_ = RECONNECT_MIN_DELAY;\n if (!this.realtime_) {\n this.scheduleConnect_(0);\n }\n } else {\n this.log_('Browser went offline. Killing connection.');\n if (this.realtime_) {\n this.realtime_.close();\n }\n }\n }\n\n private onRealtimeDisconnect_() {\n this.log_('data client disconnected');\n this.connected_ = false;\n this.realtime_ = null;\n\n // Since we don't know if our sent transactions succeeded or not, we need to cancel them.\n this.cancelSentTransactions_();\n\n // Clear out the pending requests.\n this.requestCBHash_ = {};\n\n if (this.shouldReconnect_()) {\n if (!this.visible_) {\n this.log_(\"Window isn't visible. Delaying reconnect.\");\n this.reconnectDelay_ = this.maxReconnectDelay_;\n this.lastConnectionAttemptTime_ = new Date().getTime();\n } else if (this.lastConnectionEstablishedTime_) {\n // If we've been connected long enough, reset reconnect delay to minimum.\n const timeSinceLastConnectSucceeded =\n new Date().getTime() - this.lastConnectionEstablishedTime_;\n if (timeSinceLastConnectSucceeded > RECONNECT_DELAY_RESET_TIMEOUT) {\n this.reconnectDelay_ = RECONNECT_MIN_DELAY;\n }\n this.lastConnectionEstablishedTime_ = null;\n }\n\n const timeSinceLastConnectAttempt =\n new Date().getTime() - this.lastConnectionAttemptTime_;\n let reconnectDelay = Math.max(\n 0,\n this.reconnectDelay_ - timeSinceLastConnectAttempt\n );\n reconnectDelay = Math.random() * reconnectDelay;\n\n this.log_('Trying to reconnect in ' + reconnectDelay + 'ms');\n this.scheduleConnect_(reconnectDelay);\n\n // Adjust reconnect delay for next time.\n this.reconnectDelay_ = Math.min(\n this.maxReconnectDelay_,\n this.reconnectDelay_ * RECONNECT_DELAY_MULTIPLIER\n );\n }\n this.onConnectStatus_(false);\n }\n\n private async establishConnection_() {\n if (this.shouldReconnect_()) {\n this.log_('Making a connection attempt');\n this.lastConnectionAttemptTime_ = new Date().getTime();\n this.lastConnectionEstablishedTime_ = null;\n const onDataMessage = this.onDataMessage_.bind(this);\n const onReady = this.onReady_.bind(this);\n const onDisconnect = this.onRealtimeDisconnect_.bind(this);\n const connId = this.id + ':' + PersistentConnection.nextConnectionId_++;\n const lastSessionId = this.lastSessionId;\n let canceled = false;\n let connection: Connection | null = null;\n const closeFn = function () {\n if (connection) {\n connection.close();\n } else {\n canceled = true;\n onDisconnect();\n }\n };\n const sendRequestFn = function (msg: object) {\n assert(\n connection,\n \"sendRequest call when we're not connected not allowed.\"\n );\n connection.sendRequest(msg);\n };\n\n this.realtime_ = {\n close: closeFn,\n sendRequest: sendRequestFn\n };\n\n const forceRefresh = this.forceTokenRefresh_;\n this.forceTokenRefresh_ = false;\n\n try {\n // First fetch auth and app check token, and establish connection after\n // fetching the token was successful\n const [authToken, appCheckToken] = await Promise.all([\n this.authTokenProvider_.getToken(forceRefresh),\n this.appCheckTokenProvider_.getToken(forceRefresh)\n ]);\n\n if (!canceled) {\n log('getToken() completed. Creating connection.');\n this.authToken_ = authToken && authToken.accessToken;\n this.appCheckToken_ = appCheckToken && appCheckToken.token;\n connection = new Connection(\n connId,\n this.repoInfo_,\n this.applicationId_,\n this.appCheckToken_,\n this.authToken_,\n onDataMessage,\n onReady,\n onDisconnect,\n /* onKill= */ reason => {\n warn(reason + ' (' + this.repoInfo_.toString() + ')');\n this.interrupt(SERVER_KILL_INTERRUPT_REASON);\n },\n lastSessionId\n );\n } else {\n log('getToken() completed but was canceled');\n }\n } catch (error) {\n this.log_('Failed to get token: ' + error);\n if (!canceled) {\n if (this.repoInfo_.nodeAdmin) {\n // This may be a critical error for the Admin Node.js SDK, so log a warning.\n // But getToken() may also just have temporarily failed, so we still want to\n // continue retrying.\n warn(error);\n }\n closeFn();\n }\n }\n }\n }\n\n interrupt(reason: string) {\n log('Interrupting connection for reason: ' + reason);\n this.interruptReasons_[reason] = true;\n if (this.realtime_) {\n this.realtime_.close();\n } else {\n if (this.establishConnectionTimer_) {\n clearTimeout(this.establishConnectionTimer_);\n this.establishConnectionTimer_ = null;\n }\n if (this.connected_) {\n this.onRealtimeDisconnect_();\n }\n }\n }\n\n resume(reason: string) {\n log('Resuming connection for reason: ' + reason);\n delete this.interruptReasons_[reason];\n if (isEmpty(this.interruptReasons_)) {\n this.reconnectDelay_ = RECONNECT_MIN_DELAY;\n if (!this.realtime_) {\n this.scheduleConnect_(0);\n }\n }\n }\n\n private handleTimestamp_(timestamp: number) {\n const delta = timestamp - new Date().getTime();\n this.onServerInfoUpdate_({ serverTimeOffset: delta });\n }\n\n private cancelSentTransactions_() {\n for (let i = 0; i < this.outstandingPuts_.length; i++) {\n const put = this.outstandingPuts_[i];\n if (put && /*hash*/ 'h' in put.request && put.queued) {\n if (put.onComplete) {\n put.onComplete('disconnect');\n }\n\n delete this.outstandingPuts_[i];\n this.outstandingPutCount_--;\n }\n }\n\n // Clean up array occasionally.\n if (this.outstandingPutCount_ === 0) {\n this.outstandingPuts_ = [];\n }\n }\n\n private onListenRevoked_(pathString: string, query?: unknown[]) {\n // Remove the listen and manufacture a \"permission_denied\" error for the failed listen.\n let queryId;\n if (!query) {\n queryId = 'default';\n } else {\n queryId = query.map(q => ObjectToUniqueKey(q)).join('$');\n }\n const listen = this.removeListen_(pathString, queryId);\n if (listen && listen.onComplete) {\n listen.onComplete('permission_denied');\n }\n }\n\n private removeListen_(pathString: string, queryId: string): ListenSpec {\n const normalizedPathString = new Path(pathString).toString(); // normalize path.\n let listen;\n if (this.listens.has(normalizedPathString)) {\n const map = this.listens.get(normalizedPathString)!;\n listen = map.get(queryId);\n map.delete(queryId);\n if (map.size === 0) {\n this.listens.delete(normalizedPathString);\n }\n } else {\n // all listens for this path has already been removed\n listen = undefined;\n }\n return listen;\n }\n\n private onAuthRevoked_(statusCode: string, explanation: string) {\n log('Auth token revoked: ' + statusCode + '/' + explanation);\n this.authToken_ = null;\n this.forceTokenRefresh_ = true;\n this.realtime_.close();\n if (statusCode === 'invalid_token' || statusCode === 'permission_denied') {\n // We'll wait a couple times before logging the warning / increasing the\n // retry period since oauth tokens will report as \"invalid\" if they're\n // just expired. Plus there may be transient issues that resolve themselves.\n this.invalidAuthTokenCount_++;\n if (this.invalidAuthTokenCount_ >= INVALID_TOKEN_THRESHOLD) {\n // Set a long reconnect delay because recovery is unlikely\n this.reconnectDelay_ = RECONNECT_MAX_DELAY_FOR_ADMINS;\n\n // Notify the auth token provider that the token is invalid, which will log\n // a warning\n this.authTokenProvider_.notifyForInvalidToken();\n }\n }\n }\n\n private onAppCheckRevoked_(statusCode: string, explanation: string) {\n log('App check token revoked: ' + statusCode + '/' + explanation);\n this.appCheckToken_ = null;\n this.forceTokenRefresh_ = true;\n // Note: We don't close the connection as the developer may not have\n // enforcement enabled. The backend closes connections with enforcements.\n if (statusCode === 'invalid_token' || statusCode === 'permission_denied') {\n // We'll wait a couple times before logging the warning / increasing the\n // retry period since oauth tokens will report as \"invalid\" if they're\n // just expired. Plus there may be transient issues that resolve themselves.\n this.invalidAppCheckTokenCount_++;\n if (this.invalidAppCheckTokenCount_ >= INVALID_TOKEN_THRESHOLD) {\n this.appCheckTokenProvider_.notifyForInvalidToken();\n }\n }\n }\n\n private onSecurityDebugPacket_(body: { [k: string]: unknown }) {\n if (this.securityDebugCallback_) {\n this.securityDebugCallback_(body);\n } else {\n if ('msg' in body) {\n console.log(\n 'FIREBASE: ' + (body['msg'] as string).replace('\\n', '\\nFIREBASE: ')\n );\n }\n }\n }\n\n private restoreState_() {\n //Re-authenticate ourselves if we have a credential stored.\n this.tryAuth();\n this.tryAppCheck();\n\n // Puts depend on having received the corresponding data update from the server before they complete, so we must\n // make sure to send listens before puts.\n for (const queries of this.listens.values()) {\n for (const listenSpec of queries.values()) {\n this.sendListen_(listenSpec);\n }\n }\n\n for (let i = 0; i < this.outstandingPuts_.length; i++) {\n if (this.outstandingPuts_[i]) {\n this.sendPut_(i);\n }\n }\n\n while (this.onDisconnectRequestQueue_.length) {\n const request = this.onDisconnectRequestQueue_.shift();\n this.sendOnDisconnect_(\n request.action,\n request.pathString,\n request.data,\n request.onComplete\n );\n }\n\n for (let i = 0; i < this.outstandingGets_.length; i++) {\n if (this.outstandingGets_[i]) {\n this.sendGet_(i);\n }\n }\n }\n\n /**\n * Sends client stats for first connection\n */\n private sendConnectStats_() {\n const stats: { [k: string]: number } = {};\n\n let clientName = 'js';\n if (isNodeSdk()) {\n if (this.repoInfo_.nodeAdmin) {\n clientName = 'admin_node';\n } else {\n clientName = 'node';\n }\n }\n\n stats['sdk.' + clientName + '.' + SDK_VERSION.replace(/\\./g, '-')] = 1;\n\n if (isMobileCordova()) {\n stats['framework.cordova'] = 1;\n } else if (isReactNative()) {\n stats['framework.reactnative'] = 1;\n }\n this.reportStats(stats);\n }\n\n private shouldReconnect_(): boolean {\n const online = OnlineMonitor.getInstance().currentlyOnline();\n return isEmpty(this.interruptReasons_) && online;\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Path } from '../util/Path';\n\nimport { Index } from './indexes/Index';\n\n/**\n * Node is an interface defining the common functionality for nodes in\n * a DataSnapshot.\n *\n * @interface\n */\nexport interface Node {\n /**\n * Whether this node is a leaf node.\n * @returns Whether this is a leaf node.\n */\n isLeafNode(): boolean;\n\n /**\n * Gets the priority of the node.\n * @returns The priority of the node.\n */\n getPriority(): Node;\n\n /**\n * Returns a duplicate node with the new priority.\n * @param newPriorityNode - New priority to set for the node.\n * @returns Node with new priority.\n */\n updatePriority(newPriorityNode: Node): Node;\n\n /**\n * Returns the specified immediate child, or null if it doesn't exist.\n * @param childName - The name of the child to retrieve.\n * @returns The retrieved child, or an empty node.\n */\n getImmediateChild(childName: string): Node;\n\n /**\n * Returns a child by path, or null if it doesn't exist.\n * @param path - The path of the child to retrieve.\n * @returns The retrieved child or an empty node.\n */\n getChild(path: Path): Node;\n\n /**\n * Returns the name of the child immediately prior to the specified childNode, or null.\n * @param childName - The name of the child to find the predecessor of.\n * @param childNode - The node to find the predecessor of.\n * @param index - The index to use to determine the predecessor\n * @returns The name of the predecessor child, or null if childNode is the first child.\n */\n getPredecessorChildName(\n childName: string,\n childNode: Node,\n index: Index\n ): string | null;\n\n /**\n * Returns a duplicate node, with the specified immediate child updated.\n * Any value in the node will be removed.\n * @param childName - The name of the child to update.\n * @param newChildNode - The new child node\n * @returns The updated node.\n */\n updateImmediateChild(childName: string, newChildNode: Node): Node;\n\n /**\n * Returns a duplicate node, with the specified child updated. Any value will\n * be removed.\n * @param path - The path of the child to update.\n * @param newChildNode - The new child node, which may be an empty node\n * @returns The updated node.\n */\n updateChild(path: Path, newChildNode: Node): Node;\n\n /**\n * True if the immediate child specified exists\n */\n hasChild(childName: string): boolean;\n\n /**\n * @returns True if this node has no value or children.\n */\n isEmpty(): boolean;\n\n /**\n * @returns The number of children of this node.\n */\n numChildren(): number;\n\n /**\n * Calls action for each child.\n * @param action - Action to be called for\n * each child. It's passed the child name and the child node.\n * @returns The first truthy value return by action, or the last falsey one\n */\n forEachChild(index: Index, action: (a: string, b: Node) => void): unknown;\n\n /**\n * @param exportFormat - True for export format (also wire protocol format).\n * @returns Value of this node as JSON.\n */\n val(exportFormat?: boolean): unknown;\n\n /**\n * @returns hash representing the node contents.\n */\n hash(): string;\n\n /**\n * @param other - Another node\n * @returns -1 for less than, 0 for equal, 1 for greater than other\n */\n compareTo(other: Node): number;\n\n /**\n * @returns Whether or not this snapshot equals other\n */\n equals(other: Node): boolean;\n\n /**\n * @returns This node, with the specified index now available\n */\n withIndex(indexDefinition: Index): Node;\n\n isIndexed(indexDefinition: Index): boolean;\n}\n\nexport class NamedNode {\n constructor(public name: string, public node: Node) {}\n\n static Wrap(name: string, node: Node) {\n return new NamedNode(name, node);\n }\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { Comparator } from '../../util/SortedMap';\nimport { MIN_NAME } from '../../util/util';\nimport { Node, NamedNode } from '../Node';\n\nexport abstract class Index {\n abstract compare(a: NamedNode, b: NamedNode): number;\n\n abstract isDefinedOn(node: Node): boolean;\n\n /**\n * @returns A standalone comparison function for\n * this index\n */\n getCompare(): Comparator {\n return this.compare.bind(this);\n }\n\n /**\n * Given a before and after value for a node, determine if the indexed value has changed. Even if they are different,\n * it's possible that the changes are isolated to parts of the snapshot that are not indexed.\n *\n *\n * @returns True if the portion of the snapshot being indexed changed between oldNode and newNode\n */\n indexedValueChanged(oldNode: Node, newNode: Node): boolean {\n const oldWrapped = new NamedNode(MIN_NAME, oldNode);\n const newWrapped = new NamedNode(MIN_NAME, newNode);\n return this.compare(oldWrapped, newWrapped) !== 0;\n }\n\n /**\n * @returns a node wrapper that will sort equal to or less than\n * any other node wrapper, using this index\n */\n minPost(): NamedNode {\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n return (NamedNode as any).MIN;\n }\n\n /**\n * @returns a node wrapper that will sort greater than or equal to\n * any other node wrapper, using this index\n */\n abstract maxPost(): NamedNode;\n\n abstract makePost(indexValue: unknown, name: string): NamedNode;\n\n /**\n * @returns String representation for inclusion in a query spec\n */\n abstract toString(): string;\n}\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\nimport { assert, assertionError } from '@firebase/util';\n\nimport { nameCompare, MAX_NAME } from '../../util/util';\nimport { ChildrenNode } from '../ChildrenNode';\nimport { Node, NamedNode } from '../Node';\n\nimport { Index } from './Index';\n\nlet __EMPTY_NODE: ChildrenNode;\n\nexport class KeyIndex extends Index {\n static get __EMPTY_NODE() {\n return __EMPTY_NODE;\n }\n\n static set __EMPTY_NODE(val) {\n __EMPTY_NODE = val;\n }\n compare(a: NamedNode, b: NamedNode): number {\n return nameCompare(a.name, b.name);\n }\n isDefinedOn(node: Node): boolean {\n // We could probably return true here (since every node has a key), but it's never called\n // so just leaving unimplemented for now.\n throw assertionError('KeyIndex.isDefinedOn not expected to be called.');\n }\n indexedValueChanged(oldNode: Node, newNode: Node): boolean {\n return false; // The key for a node never changes.\n }\n minPost() {\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n return (NamedNode as any).MIN;\n }\n maxPost(): NamedNode {\n // TODO: This should really be created once and cached in a static property, but\n // NamedNode isn't defined yet, so I can't use it in a static. Bleh.\n return new NamedNode(MAX_NAME, __EMPTY_NODE);\n }\n\n makePost(indexValue: string, name: string): NamedNode {\n assert(\n typeof indexValue === 'string',\n 'KeyIndex indexValue must always be a string.'\n );\n // We just use empty node, but it'll never be compared, since our comparator only looks at name.\n return new NamedNode(indexValue, __EMPTY_NODE);\n }\n\n /**\n * @returns String representation for inclusion in a query spec\n */\n toString(): string {\n return '.key';\n }\n}\n\nexport const KEY_INDEX = new KeyIndex();\n","/**\n * @license\n * Copyright 2017 Google LLC\n *\n * Licensed under the Apache License, Version 2.0 (the \"License\");\n * you may not use this file except in compliance with the License.\n * You may obtain a copy of the License at\n *\n * http://www.apache.org/licenses/LICENSE-2.0\n *\n * Unless required by applicable law or agreed to in writing, software\n * distributed under the License is distributed on an \"AS IS\" BASIS,\n * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n * See the License for the specific language governing permissions and\n * limitations under the License.\n */\n\n/**\n * @fileoverview Implementation of an immutable SortedMap using a Left-leaning\n * Red-Black Tree, adapted from the implementation in Mugs\n * (http://mads379.github.com/mugs/) by Mads Hartmann Jensen\n * (mads379\\@gmail.com).\n *\n * Original paper on Left-leaning Red-Black Trees:\n * http://www.cs.princeton.edu/~rs/talks/LLRB/LLRB.pdf\n *\n * Invariant 1: No red node has a red child\n * Invariant 2: Every leaf path has the same number of black nodes\n * Invariant 3: Only the left child can be red (left leaning)\n */\n\n// TODO: There are some improvements I'd like to make to improve memory / perf:\n// * Create two prototypes, LLRedNode and LLBlackNode, instead of storing a\n// color property in every node.\n// TODO: It would also be good (and possibly necessary) to create a base\n// interface for LLRBNode and LLRBEmptyNode.\n\nexport type Comparator = (key1: K, key2: K) => number;\n\n/**\n * An iterator over an LLRBNode.\n */\nexport class SortedMapIterator {\n private nodeStack_: Array | LLRBEmptyNode> = [];\n\n /**\n * @param node - Node to iterate.\n * @param isReverse_ - Whether or not to iterate in reverse\n */\n constructor(\n node: LLRBNode | LLRBEmptyNode,\n startKey: K | null,\n comparator: Comparator,\n private isReverse_: boolean,\n private resultGenerator_: ((k: K, v: V) => T) | null = null\n ) {\n let cmp = 1;\n while (!node.isEmpty()) {\n node = node as LLRBNode;\n cmp = startKey ? comparator(node.key, startKey) : 1;\n // flip the comparison if we're going in reverse\n if (isReverse_) {\n cmp *= -1;\n }\n\n if (cmp < 0) {\n // This node is less than our start key. ignore it\n if (this.isReverse_) {\n node = node.left;\n } else {\n node = node.right;\n }\n } else if (cmp === 0) {\n // This node is exactly equal to our start key. Push it on the stack, but stop iterating;\n this.nodeStack_.push(node);\n break;\n } else {\n // This node is greater than our start key, add it to the stack and move to the next one\n this.nodeStack_.push(node);\n if (this.isReverse_) {\n node = node.right;\n } else {\n node = node.left;\n }\n }\n }\n }\n\n getNext(): T {\n if (this.nodeStack_.length === 0) {\n return null;\n }\n\n let node = this.nodeStack_.pop();\n let result: T;\n if (this.resultGenerator_) {\n result = this.resultGenerator_(node.key, node.value);\n } else {\n result = { key: node.key, value: node.value } as unknown as T;\n }\n\n if (this.isReverse_) {\n node = node.left;\n while (!node.isEmpty()) {\n this.nodeStack_.push(node);\n node = node.right;\n }\n } else {\n node = node.right;\n while (!node.isEmpty()) {\n this.nodeStack_.push(node);\n node = node.left;\n }\n }\n\n return result;\n }\n\n hasNext(): boolean {\n return this.nodeStack_.length > 0;\n }\n\n peek(): T {\n if (this.nodeStack_.length === 0) {\n return null;\n }\n\n const node = this.nodeStack_[this.nodeStack_.length - 1];\n if (this.resultGenerator_) {\n return this.resultGenerator_(node.key, node.value);\n } else {\n return { key: node.key, value: node.value } as unknown as T;\n }\n }\n}\n\n/**\n * Represents a node in a Left-leaning Red-Black tree.\n */\nexport class LLRBNode {\n color: boolean;\n left: LLRBNode | LLRBEmptyNode;\n right: LLRBNode | LLRBEmptyNode;\n\n /**\n * @param key - Key associated with this node.\n * @param value - Value associated with this node.\n * @param color - Whether this node is red.\n * @param left - Left child.\n * @param right - Right child.\n */\n constructor(\n public key: K,\n public value: V,\n color: boolean | null,\n left?: LLRBNode | LLRBEmptyNode | null,\n right?: LLRBNode | LLRBEmptyNode | null\n ) {\n this.color = color != null ? color : LLRBNode.RED;\n this.left =\n left != null ? left : (SortedMap.EMPTY_NODE as LLRBEmptyNode);\n this.right =\n right != null ? right : (SortedMap.EMPTY_NODE as LLRBEmptyNode);\n }\n\n static RED = true;\n static BLACK = false;\n\n /**\n * Returns a copy of the current node, optionally replacing pieces of it.\n *\n * @param key - New key for the node, or null.\n * @param value - New value for the node, or null.\n * @param color - New color for the node, or null.\n * @param left - New left child for the node, or null.\n * @param right - New right child for the node, or null.\n * @returns The node copy.\n */\n copy(\n key: K | null,\n value: V | null,\n color: boolean | null,\n left: LLRBNode | LLRBEmptyNode | null,\n right: LLRBNode | LLRBEmptyNode | null\n ): LLRBNode {\n return new LLRBNode(\n key != null ? key : this.key,\n value != null ? value : this.value,\n color != null ? color : this.color,\n left != null ? left : this.left,\n right != null ? right : this.right\n );\n }\n\n /**\n * @returns The total number of nodes in the tree.\n */\n count(): number {\n return this.left.count() + 1 + this.right.count();\n }\n\n /**\n * @returns True if the tree is empty.\n */\n isEmpty(): boolean {\n return false;\n }\n\n /**\n * Traverses the tree in key order and calls the specified action function\n * for each node.\n *\n * @param action - Callback function to be called for each\n * node. If it returns true, traversal is aborted.\n * @returns The first truthy value returned by action, or the last falsey\n * value returned by action\n */\n inorderTraversal(action: (k: K, v: V) => unknown): boolean {\n return (\n this.left.inorderTraversal(action) ||\n !!action(this.key, this.value) ||\n this.right.inorderTraversal(action)\n );\n }\n\n /**\n * Traverses the tree in reverse key order and calls the specified action function\n * for each node.\n *\n * @param action - Callback function to be called for each\n * node. If it returns true, traversal is aborted.\n * @returns True if traversal was aborted.\n */\n reverseTraversal(action: (k: K, v: V) => void): boolean {\n return (\n this.right.reverseTraversal(action) ||\n action(this.key, this.value) ||\n this.left.reverseTraversal(action)\n );\n }\n\n /**\n * @returns The minimum node in the tree.\n */\n private min_(): LLRBNode {\n if (this.left.isEmpty()) {\n return this;\n } else {\n return (this.left as LLRBNode).min_();\n }\n }\n\n /**\n * @returns The maximum key in the tree.\n */\n minKey(): K {\n return this.min_().key;\n }\n\n /**\n * @returns The maximum key in the tree.\n */\n maxKey(): K {\n if (this.right.isEmpty()) {\n return this.key;\n } else {\n return this.right.maxKey();\n }\n }\n\n /**\n * @param key - Key to insert.\n * @param value - Value to insert.\n * @param comparator - Comparator.\n * @returns New tree, with the key/value added.\n */\n insert(key: K, value: V, comparator: Comparator): LLRBNode {\n let n: LLRBNode = this;\n const cmp = comparator(key, n.key);\n if (cmp < 0) {\n n = n.copy(null, null, null, n.left.insert(key, value, comparator), null);\n } else if (cmp === 0) {\n n = n.copy(null, value, null, null, null);\n } else {\n n = n.copy(\n null,\n null,\n null,\n null,\n n.right.insert(key, value, comparator)\n );\n }\n return n.fixUp_();\n }\n\n /**\n * @returns New tree, with the minimum key removed.\n */\n private removeMin_(): LLRBNode | LLRBEmptyNode {\n if (this.left.isEmpty()) {\n return SortedMap.EMPTY_NODE as LLRBEmptyNode;\n }\n let n: LLRBNode = this;\n if (!n.left.isRed_() && !n.left.left.isRed_()) {\n n = n.moveRedLeft_();\n }\n n = n.copy(null, null, null, (n.left as LLRBNode).removeMin_(), null);\n return n.fixUp_();\n }\n\n /**\n * @param key - The key of the item to remove.\n * @param comparator - Comparator.\n * @returns New tree, with the specified item removed.\n */\n remove(\n key: K,\n comparator: Comparator\n ): LLRBNode | LLRBEmptyNode {\n let n, smallest;\n n = this;\n if (comparator(key, n.key) < 0) {\n if (!n.left.isEmpty() && !n.left.isRed_() && !n.left.left.isRed_()) {\n n = n.moveRedLeft_();\n }\n n = n.copy(null, null, null, n.left.remove(key, comparator), null);\n } else {\n if (n.left.isRed_()) {\n n = n.rotateRight_();\n }\n if (!n.right.isEmpty() && !n.right.isRed_() && !n.right.left.isRed_()) {\n n = n.moveRedRight_();\n }\n if (comparator(key, n.key) === 0) {\n if (n.right.isEmpty()) {\n return SortedMap.EMPTY_NODE as LLRBEmptyNode;\n } else {\n smallest = (n.right as LLRBNode).min_();\n n = n.copy(\n smallest.key,\n smallest.value,\n null,\n null,\n (n.right as LLRBNode).removeMin_()\n );\n }\n }\n n = n.copy(null, null, null, null, n.right.remove(key, comparator));\n }\n return n.fixUp_();\n }\n\n /**\n * @returns Whether this is a RED node.\n */\n isRed_(): boolean {\n return this.color;\n }\n\n /**\n * @returns New tree after performing any needed rotations.\n */\n private fixUp_(): LLRBNode {\n let n: LLRBNode = this;\n if (n.right.isRed_() && !n.left.isRed_()) {\n n = n.rotateLeft_();\n }\n if (n.left.isRed_() && n.left.left.isRed_()) {\n n = n.rotateRight_();\n }\n if (n.left.isRed_() && n.right.isRed_()) {\n n = n.colorFlip_();\n }\n return n;\n }\n\n /**\n * @returns New tree, after moveRedLeft.\n */\n private moveRedLeft_(): LLRBNode {\n let n = this.colorFlip_();\n if (n.right.left.isRed_()) {\n n = n.copy(\n null,\n null,\n null,\n null,\n (n.right as LLRBNode).rotateRight_()\n );\n n = n.rotateLeft_();\n n = n.colorFlip_();\n }\n return n;\n }\n\n /**\n * @returns New tree, after moveRedRight.\n */\n private moveRedRight_(): LLRBNode {\n let n = this.colorFlip_();\n if (n.left.left.isRed_()) {\n n = n.rotateRight_();\n n = n.colorFlip_();\n }\n return n;\n }\n\n /**\n * @returns New tree, after rotateLeft.\n */\n private rotateLeft_(): LLRBNode {\n const nl = this.copy(null, null, LLRBNode.RED, null, this.right.left);\n return this.right.copy(null, null, this.color, nl, null) as LLRBNode;\n }\n\n /**\n * @returns New tree, after rotateRight.\n */\n private rotateRight_(): LLRBNode {\n const nr = this.copy(null, null, LLRBNode.RED, this.left.right, null);\n return this.left.copy(null, null, this.color, null, nr) as LLRBNode;\n }\n\n /**\n * @returns Newt ree, after colorFlip.\n */\n private colorFlip_(): LLRBNode {\n const left = this.left.copy(null, null, !this.left.color, null, null);\n const right = this.right.copy(null, null, !this.right.color, null, null);\n return this.copy(null, null, !this.color, left, right);\n }\n\n /**\n * For testing.\n *\n * @returns True if all is well.\n */\n private checkMaxDepth_(): boolean {\n const blackDepth = this.check_();\n return Math.pow(2.0, blackDepth) <= this.count() + 1;\n }\n\n check_(): number {\n if (this.isRed_() && this.left.isRed_()) {\n throw new Error(\n 'Red node has red child(' + this.key + ',' + this.value + ')'\n );\n }\n if (this.right.isRed_()) {\n throw new Error(\n 'Right child of (' + this.key + ',' + this.value + ') is red'\n );\n }\n const blackDepth = this.left.check_();\n if (blackDepth !== this.right.check_()) {\n throw new Error('Black depths differ');\n } else {\n return blackDepth + (this.isRed_() ? 0 : 1);\n }\n }\n}\n\n/**\n * Represents an empty node (a leaf node in the Red-Black Tree).\n */\nexport class LLRBEmptyNode {\n key: K;\n value: V;\n left: LLRBNode | LLRBEmptyNode;\n right: LLRBNode | LLRBEmptyNode;\n color: boolean;\n\n /**\n * Returns a copy of the current node.\n *\n * @returns The node copy.\n */\n copy(\n key: K | null,\n value: V | null,\n color: boolean | null,\n left: LLRBNode | LLRBEmptyNode | null,\n right: LLRBNode | LLRBEmptyNode | null\n ): LLRBEmptyNode {\n return this;\n }\n\n /**\n * Returns a copy of the tree, with the specified key/value added.\n *\n * @param key - Key to be added.\n * @param value - Value to be added.\n * @param comparator - Comparator.\n * @returns New tree, with item added.\n */\n insert(key: K, value: V, comparator: Comparator): LLRBNode {\n return new LLRBNode(key, value, null);\n }\n\n /**\n * Returns a copy of the tree, with the specified key removed.\n *\n * @param key - The key to remove.\n * @param comparator - Comparator.\n * @returns New tree, with item removed.\n */\n remove(key: K, comparator: Comparator