2 lines
8.3 KiB
JavaScript
2 lines
8.3 KiB
JavaScript
(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}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)){}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}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}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);
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