/*

 Copyright (c) 2014-2016 GitHub, Inc.
 SPDX-License-Identifier: MIT
*/
(function(self){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};if(support.arrayBuffer){var viewClasses=["[object Int8Array]","[object Uint8Array]","[object Uint8ClampedArray]","[object Int16Array]","[object Uint16Array]","[object Int32Array]","[object Uint32Array]",
"[object Float32Array]","[object Float64Array]"];var isDataView=function(obj){return obj&&DataView.prototype.isPrototypeOf(obj)};var isArrayBufferView=ArrayBuffer.isView||function(obj){return obj&&viewClasses.indexOf(Object.prototype.toString.call(obj))>-1}}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;var promise=fileReaderReady(reader);reader.readAsArrayBuffer(blob);return promise}function readBlobAsText(blob){var reader=new FileReader;var promise=fileReaderReady(reader);reader.readAsText(blob);return promise}function readArrayBufferAsText(buf){var view=new Uint8Array(buf);var chars=new Array(view.length);for(var i=0;i<view.length;i++)chars[i]=String.fromCharCode(view[i]);return chars.join("")}function bufferClone(buf){if(buf.slice)return buf.slice(0);
else{var view=new Uint8Array(buf.byteLength);view.set(new Uint8Array(buf));return view.buffer}}function Body(){this.bodyUsed=false;this._initBody=function(body){this._bodyInit=body;if(!body)this._bodyText="";else 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(support.arrayBuffer&&support.blob&&isDataView(body)){this._bodyArrayBuffer=bufferClone(body.buffer);this._bodyInit=new Blob([this._bodyArrayBuffer])}else if(support.arrayBuffer&&(ArrayBuffer.prototype.isPrototypeOf(body)||isArrayBufferView(body)))this._bodyArrayBuffer=bufferClone(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._bodyArrayBuffer)return Promise.resolve(new Blob([this._bodyArrayBuffer]));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(){if(this._bodyArrayBuffer)return consumed(this)||Promise.resolve(this._bodyArrayBuffer);else 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._bodyArrayBuffer)return Promise.resolve(readArrayBufferAsText(this._bodyArrayBuffer));else if(this._bodyFormData)throw new Error("could not read FormData body as text");
else return 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(typeof input==="string")this.url=input;else{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&&input._bodyInit!=null){body=input._bodyInit;input.bodyUsed=true}}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,{body:this._bodyInit})};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 parseHeaders(rawHeaders){var headers=
new Headers;rawHeaders.split("\r\n").forEach(function(line){var parts=line.split(":");var key=parts.shift().trim();if(key){var value=parts.join(":").trim();headers.append(key,value)}});return headers}Body.call(Request.prototype);function Response(bodyInit,options){if(!options)options={};this.type="default";this.status="status"in options?options.status:200;this.ok=this.status>=200&&this.status<300;this.statusText="statusText"in options?options.statusText:"OK";this.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=new Request(input,init);var xhr=new XMLHttpRequest;xhr.onload=function(){var options={status:xhr.status,statusText:xhr.statusText,headers:parseHeaders(xhr.getAllResponseHeaders()||"")};options.url="responseURL"in xhr?xhr.responseURL:options.headers.get("X-Request-URL");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);