| // https://github.com/github/fetch |
| // |
| // Copyright (c) 2014-2016 GitHub, Inc. |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining |
| // a copy of this software and associated documentation files (the |
| // "Software"), to deal in the Software without restriction, including |
| // without limitation the rights to use, copy, modify, merge, publish, |
| // distribute, sublicense, and/or sell copies of the Software, and to |
| // permit persons to whom the Software is furnished to do so, subject to |
| // the following conditions: |
| // |
| // The above copyright notice and this permission notice shall be |
| // included in all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
| // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| |
| (function(self) { |
| 'use strict'; |
| |
| if (self.fetch) { |
| return |
| } |
| |
| var support = { |
| searchParams: 'URLSearchParams' in self, |
| iterable: 'Symbol' in self && 'iterator' in Symbol, |
| blob: 'FileReader' in self && 'Blob' in self && (function() { |
| try { |
| new Blob() |
| return true |
| } catch(e) { |
| return false |
| } |
| })(), |
| formData: 'FormData' in self, |
| arrayBuffer: 'ArrayBuffer' in self |
| } |
| |
| function normalizeName(name) { |
| if (typeof name !== 'string') { |
| name = String(name) |
| } |
| if (/[^a-z0-9\-#$%&'*+.\^_`|~]/i.test(name)) { |
| throw new TypeError('Invalid character in header field name') |
| } |
| return name.toLowerCase() |
| } |
| |
| function normalizeValue(value) { |
| if (typeof value !== 'string') { |
| value = String(value) |
| } |
| return value |
| } |
| |
| // Build a destructive iterator for the value list |
| function iteratorFor(items) { |
| var iterator = { |
| next: function() { |
| var value = items.shift() |
| return {done: value === undefined, value: value} |
| } |
| } |
| |
| if (support.iterable) { |
| iterator[Symbol.iterator] = function() { |
| return iterator |
| } |
| } |
| |
| return iterator |
| } |
| |
| function Headers(headers) { |
| this.map = {} |
| |
| if (headers instanceof Headers) { |
| headers.forEach(function(value, name) { |
| this.append(name, value) |
| }, this) |
| |
| } else if (headers) { |
| Object.getOwnPropertyNames(headers).forEach(function(name) { |
| this.append(name, headers[name]) |
| }, this) |
| } |
| } |
| |
| Headers.prototype.append = function(name, value) { |
| name = normalizeName(name) |
| value = normalizeValue(value) |
| var list = this.map[name] |
| if (!list) { |
| list = [] |
| this.map[name] = list |
| } |
| list.push(value) |
| } |
| |
| Headers.prototype['delete'] = function(name) { |
| delete this.map[normalizeName(name)] |
| } |
| |
| Headers.prototype.get = function(name) { |
| var values = this.map[normalizeName(name)] |
| return values ? values[0] : null |
| } |
| |
| Headers.prototype.getAll = function(name) { |
| return this.map[normalizeName(name)] || [] |
| } |
| |
| Headers.prototype.has = function(name) { |
| return this.map.hasOwnProperty(normalizeName(name)) |
| } |
| |
| Headers.prototype.set = function(name, value) { |
| this.map[normalizeName(name)] = [normalizeValue(value)] |
| } |
| |
| Headers.prototype.forEach = function(callback, thisArg) { |
| Object.getOwnPropertyNames(this.map).forEach(function(name) { |
| this.map[name].forEach(function(value) { |
| callback.call(thisArg, value, name, this) |
| }, this) |
| }, this) |
| } |
| |
| Headers.prototype.keys = function() { |
| var items = [] |
| this.forEach(function(value, name) { items.push(name) }) |
| return iteratorFor(items) |
| } |
| |
| Headers.prototype.values = function() { |
| var items = [] |
| this.forEach(function(value) { items.push(value) }) |
| return iteratorFor(items) |
| } |
| |
| Headers.prototype.entries = function() { |
| var items = [] |
| this.forEach(function(value, name) { items.push([name, value]) }) |
| return iteratorFor(items) |
| } |
| |
| if (support.iterable) { |
| Headers.prototype[Symbol.iterator] = Headers.prototype.entries |
| } |
| |
| function consumed(body) { |
| if (body.bodyUsed) { |
| return Promise.reject(new TypeError('Already read')) |
| } |
| body.bodyUsed = true |
| } |
| |
| function fileReaderReady(reader) { |
| return new Promise(function(resolve, reject) { |
| reader.onload = function() { |
| resolve(reader.result) |
| } |
| reader.onerror = function() { |
| reject(reader.error) |
| } |
| }) |
| } |
| |
| function readBlobAsArrayBuffer(blob) { |
| var reader = new FileReader() |
| reader.readAsArrayBuffer(blob) |
| return fileReaderReady(reader) |
| } |
| |
| function readBlobAsText(blob) { |
| var reader = new FileReader() |
| reader.readAsText(blob) |
| return fileReaderReady(reader) |
| } |
| |
| function Body() { |
| this.bodyUsed = false |
| |
| this._initBody = function(body) { |
| this._bodyInit = body |
| if (typeof body === 'string') { |
| this._bodyText = body |
| } else if (support.blob && Blob.prototype.isPrototypeOf(body)) { |
| this._bodyBlob = body |
| } else if (support.formData && FormData.prototype.isPrototypeOf(body)) { |
| this._bodyFormData = body |
| } else if (support.searchParams && URLSearchParams.prototype.isPrototypeOf(body)) { |
| this._bodyText = body.toString() |
| } else if (!body) { |
| this._bodyText = '' |
| } else if (support.arrayBuffer && ArrayBuffer.prototype.isPrototypeOf(body)) { |
| // Only support ArrayBuffers for POST method. |
| // Receiving ArrayBuffers happens via Blobs, instead. |
| } else { |
| throw new Error('unsupported BodyInit type') |
| } |
| |
| if (!this.headers.get('content-type')) { |
| if (typeof body === 'string') { |
| this.headers.set('content-type', 'text/plain;charset=UTF-8') |
| } else if (this._bodyBlob && this._bodyBlob.type) { |
| this.headers.set('content-type', this._bodyBlob.type) |
| } else if (support.searchParams && URLSearchParams.prototype.isPrototypeOf(body)) { |
| this.headers.set('content-type', 'application/x-www-form-urlencoded;charset=UTF-8') |
| } |
| } |
| } |
| |
| if (support.blob) { |
| this.blob = function() { |
| var rejected = consumed(this) |
| if (rejected) { |
| return rejected |
| } |
| |
| if (this._bodyBlob) { |
| return Promise.resolve(this._bodyBlob) |
| } else if (this._bodyFormData) { |
| throw new Error('could not read FormData body as blob') |
| } else { |
| return Promise.resolve(new Blob([this._bodyText])) |
| } |
| } |
| |
| this.arrayBuffer = function() { |
| return this.blob().then(readBlobAsArrayBuffer) |
| } |
| |
| this.text = function() { |
| var rejected = consumed(this) |
| if (rejected) { |
| return rejected |
| } |
| |
| if (this._bodyBlob) { |
| return readBlobAsText(this._bodyBlob) |
| } else if (this._bodyFormData) { |
| throw new Error('could not read FormData body as text') |
| } else { |
| return Promise.resolve(this._bodyText) |
| } |
| } |
| } else { |
| this.text = function() { |
| var rejected = consumed(this) |
| return rejected ? rejected : Promise.resolve(this._bodyText) |
| } |
| } |
| |
| if (support.formData) { |
| this.formData = function() { |
| return this.text().then(decode) |
| } |
| } |
| |
| this.json = function() { |
| return this.text().then(JSON.parse) |
| } |
| |
| return this |
| } |
| |
| // HTTP methods whose capitalization should be normalized |
| var methods = ['DELETE', 'GET', 'HEAD', 'OPTIONS', 'POST', 'PUT'] |
| |
| function normalizeMethod(method) { |
| var upcased = method.toUpperCase() |
| return (methods.indexOf(upcased) > -1) ? upcased : method |
| } |
| |
| function Request(input, options) { |
| options = options || {} |
| var body = options.body |
| if (Request.prototype.isPrototypeOf(input)) { |
| if (input.bodyUsed) { |
| throw new TypeError('Already read') |
| } |
| this.url = input.url |
| this.credentials = input.credentials |
| if (!options.headers) { |
| this.headers = new Headers(input.headers) |
| } |
| this.method = input.method |
| this.mode = input.mode |
| if (!body) { |
| body = input._bodyInit |
| input.bodyUsed = true |
| } |
| } else { |
| this.url = input |
| } |
| |
| this.credentials = options.credentials || this.credentials || 'omit' |
| if (options.headers || !this.headers) { |
| this.headers = new Headers(options.headers) |
| } |
| this.method = normalizeMethod(options.method || this.method || 'GET') |
| this.mode = options.mode || this.mode || null |
| this.referrer = null |
| |
| if ((this.method === 'GET' || this.method === 'HEAD') && body) { |
| throw new TypeError('Body not allowed for GET or HEAD requests') |
| } |
| this._initBody(body) |
| } |
| |
| Request.prototype.clone = function() { |
| return new Request(this) |
| } |
| |
| function decode(body) { |
| var form = new FormData() |
| body.trim().split('&').forEach(function(bytes) { |
| if (bytes) { |
| var split = bytes.split('=') |
| var name = split.shift().replace(/\+/g, ' ') |
| var value = split.join('=').replace(/\+/g, ' ') |
| form.append(decodeURIComponent(name), decodeURIComponent(value)) |
| } |
| }) |
| return form |
| } |
| |
| function headers(xhr) { |
| var head = new Headers() |
| var pairs = (xhr.getAllResponseHeaders() || '').trim().split('\n') |
| pairs.forEach(function(header) { |
| var split = header.trim().split(':') |
| var key = split.shift().trim() |
| var value = split.join(':').trim() |
| head.append(key, value) |
| }) |
| return head |
| } |
| |
| Body.call(Request.prototype) |
| |
| function Response(bodyInit, options) { |
| if (!options) { |
| options = {} |
| } |
| |
| this.type = 'default' |
| this.status = options.status |
| this.ok = this.status >= 200 && this.status < 300 |
| this.statusText = options.statusText |
| this.headers = options.headers instanceof Headers ? options.headers : new Headers(options.headers) |
| this.url = options.url || '' |
| this._initBody(bodyInit) |
| } |
| |
| Body.call(Response.prototype) |
| |
| Response.prototype.clone = function() { |
| return new Response(this._bodyInit, { |
| status: this.status, |
| statusText: this.statusText, |
| headers: new Headers(this.headers), |
| url: this.url |
| }) |
| } |
| |
| Response.error = function() { |
| var response = new Response(null, {status: 0, statusText: ''}) |
| response.type = 'error' |
| return response |
| } |
| |
| var redirectStatuses = [301, 302, 303, 307, 308] |
| |
| Response.redirect = function(url, status) { |
| if (redirectStatuses.indexOf(status) === -1) { |
| throw new RangeError('Invalid status code') |
| } |
| |
| return new Response(null, {status: status, headers: {location: url}}) |
| } |
| |
| self.Headers = Headers |
| self.Request = Request |
| self.Response = Response |
| |
| self.fetch = function(input, init) { |
| return new Promise(function(resolve, reject) { |
| var request |
| if (Request.prototype.isPrototypeOf(input) && !init) { |
| request = input |
| } else { |
| request = new Request(input, init) |
| } |
| |
| var xhr = new XMLHttpRequest() |
| |
| function responseURL() { |
| if ('responseURL' in xhr) { |
| return xhr.responseURL |
| } |
| |
| // Avoid security warnings on getResponseHeader when not allowed by CORS |
| if (/^X-Request-URL:/m.test(xhr.getAllResponseHeaders())) { |
| return xhr.getResponseHeader('X-Request-URL') |
| } |
| |
| return |
| } |
| |
| xhr.onload = function() { |
| var options = { |
| status: xhr.status, |
| statusText: xhr.statusText, |
| headers: headers(xhr), |
| url: responseURL() |
| } |
| var body = 'response' in xhr ? xhr.response : xhr.responseText |
| resolve(new Response(body, options)) |
| } |
| |
| xhr.onerror = function() { |
| reject(new TypeError('Network request failed')) |
| } |
| |
| xhr.ontimeout = function() { |
| reject(new TypeError('Network request failed')) |
| } |
| |
| xhr.open(request.method, request.url, true) |
| |
| if (request.credentials === 'include') { |
| xhr.withCredentials = true |
| } |
| |
| if ('responseType' in xhr && support.blob) { |
| xhr.responseType = 'blob' |
| } |
| |
| request.headers.forEach(function(value, name) { |
| xhr.setRequestHeader(name, value) |
| }) |
| |
| xhr.send(typeof request._bodyInit === 'undefined' ? null : request._bodyInit) |
| }) |
| } |
| self.fetch.polyfill = true |
| })(typeof self !== 'undefined' ? self : this); |