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header[1])\n    }, this)\n  } else if (headers) {\n    Object.getOwnPropertyNames(headers).forEach(function(name) {\n      this.append(name, headers[name])\n    }, this)\n  }\n}\n\nHeaders.prototype.append = function(name, value) {\n  name = normalizeName(name)\n  value = normalizeValue(value)\n  var oldValue = this.map[name]\n  this.map[name] = oldValue ? oldValue + ', ' + value : value\n}\n\nHeaders.prototype['delete'] = function(name) {\n  delete this.map[normalizeName(name)]\n}\n\nHeaders.prototype.get = function(name) {\n  name = normalizeName(name)\n  return this.has(name) ? this.map[name] : null\n}\n\nHeaders.prototype.has = function(name) {\n  return this.map.hasOwnProperty(normalizeName(name))\n}\n\nHeaders.prototype.set = function(name, value) {\n  this.map[normalizeName(name)] = normalizeValue(value)\n}\n\nHeaders.prototype.forEach = function(callback, thisArg) {\n  for (var name in this.map) {\n    if (this.map.hasOwnProperty(name)) {\n      callback.call(thisArg, this.map[name], name, this)\n    }\n  }\n}\n\nHeaders.prototype.keys = function() {\n  var items = []\n  this.forEach(function(value, name) {\n    items.push(name)\n  })\n  return iteratorFor(items)\n}\n\nHeaders.prototype.values = function() {\n  var items = []\n  this.forEach(function(value) {\n    items.push(value)\n  })\n  return iteratorFor(items)\n}\n\nHeaders.prototype.entries = function() {\n  var items = []\n  this.forEach(function(value, name) {\n    items.push([name, value])\n  })\n  return iteratorFor(items)\n}\n\nif (support.iterable) {\n  Headers.prototype[Symbol.iterator] = Headers.prototype.entries\n}\n\nfunction consumed(body) {\n  if (body.bodyUsed) {\n    return Promise.reject(new TypeError('Already read'))\n  }\n  body.bodyUsed = true\n}\n\nfunction fileReaderReady(reader) {\n  return new Promise(function(resolve, reject) {\n    reader.onload = function() {\n      resolve(reader.result)\n    }\n    reader.onerror = function() {\n      reject(reader.error)\n    }\n  })\n}\n\nfunction readBlobAsArrayBuffer(blob) {\n  var reader = new FileReader()\n  var promise = fileReaderReady(reader)\n  reader.readAsArrayBuffer(blob)\n  return promise\n}\n\nfunction readBlobAsText(blob) {\n  var reader = new FileReader()\n  var promise = fileReaderReady(reader)\n  reader.readAsText(blob)\n  return promise\n}\n\nfunction readArrayBufferAsText(buf) {\n  var view = new Uint8Array(buf)\n  var chars = new Array(view.length)\n\n  for (var i = 0; i < view.length; i++) {\n    chars[i] = String.fromCharCode(view[i])\n  }\n  return chars.join('')\n}\n\nfunction bufferClone(buf) {\n  if (buf.slice) {\n    return buf.slice(0)\n  } else {\n    var view = new Uint8Array(buf.byteLength)\n    view.set(new Uint8Array(buf))\n    return view.buffer\n  }\n}\n\nfunction Body() {\n  this.bodyUsed = false\n\n  this._initBody = function(body) {\n    this._bodyInit = body\n    if (!body) {\n      this._bodyText = ''\n    } else if (typeof body === 'string') {\n      this._bodyText = body\n    } else if (support.blob && Blob.prototype.isPrototypeOf(body)) {\n      this._bodyBlob = body\n    } else if (support.formData && FormData.prototype.isPrototypeOf(body)) {\n      this._bodyFormData = body\n    } else if (support.searchParams && URLSearchParams.prototype.isPrototypeOf(body)) {\n      this._bodyText = body.toString()\n    } else if (support.arrayBuffer && support.blob && isDataView(body)) {\n      this._bodyArrayBuffer = bufferClone(body.buffer)\n      // IE 10-11 can't handle a DataView body.\n      this._bodyInit = new Blob([this._bodyArrayBuffer])\n    } else if (support.arrayBuffer && (ArrayBuffer.prototype.isPrototypeOf(body) || isArrayBufferView(body))) {\n      this._bodyArrayBuffer = bufferClone(body)\n    } else {\n      this._bodyText = body = Object.prototype.toString.call(body)\n    }\n\n    if (!this.headers.get('content-type')) {\n      if (typeof body === 'string') {\n        this.headers.set('content-type', 'text/plain;charset=UTF-8')\n      } else if (this._bodyBlob && this._bodyBlob.type) {\n        this.headers.set('content-type', this._bodyBlob.type)\n      } else if (support.searchParams && URLSearchParams.prototype.isPrototypeOf(body)) {\n        this.headers.set('content-type', 'application/x-www-form-urlencoded;charset=UTF-8')\n      }\n    }\n  }\n\n  if (support.blob) {\n    this.blob = function() {\n      var rejected = consumed(this)\n      if (rejected) {\n        return rejected\n      }\n\n      if (this._bodyBlob) {\n        return Promise.resolve(this._bodyBlob)\n      } else if (this._bodyArrayBuffer) {\n        return Promise.resolve(new Blob([this._bodyArrayBuffer]))\n      } else if (this._bodyFormData) {\n        throw new Error('could not read FormData body as blob')\n      } else {\n        return Promise.resolve(new Blob([this._bodyText]))\n      }\n    }\n\n    this.arrayBuffer = function() {\n      if (this._bodyArrayBuffer) {\n        return consumed(this) || Promise.resolve(this._bodyArrayBuffer)\n      } else {\n        return this.blob().then(readBlobAsArrayBuffer)\n      }\n    }\n  }\n\n  this.text = function() {\n    var rejected = consumed(this)\n    if (rejected) {\n      return rejected\n    }\n\n    if (this._bodyBlob) {\n      return readBlobAsText(this._bodyBlob)\n    } else if (this._bodyArrayBuffer) {\n      return Promise.resolve(readArrayBufferAsText(this._bodyArrayBuffer))\n    } else if (this._bodyFormData) {\n      throw new Error('could not read FormData body as text')\n    } else {\n      return Promise.resolve(this._bodyText)\n    }\n  }\n\n  if (support.formData) {\n    this.formData = function() {\n      return this.text().then(decode)\n    }\n  }\n\n  this.json = function() {\n    return this.text().then(JSON.parse)\n  }\n\n  return this\n}\n\n// HTTP methods whose capitalization should be normalized\nvar methods = ['DELETE', 'GET', 'HEAD', 'OPTIONS', 'POST', 'PUT']\n\nfunction normalizeMethod(method) {\n  var upcased = method.toUpperCase()\n  return methods.indexOf(upcased) > -1 ? upcased : method\n}\n\nexport function Request(input, options) {\n  options = options || {}\n  var body = options.body\n\n  if (input instanceof Request) {\n    if (input.bodyUsed) {\n      throw new TypeError('Already read')\n    }\n    this.url = input.url\n    this.credentials = input.credentials\n    if (!options.headers) {\n      this.headers = new Headers(input.headers)\n    }\n    this.method = input.method\n    this.mode = input.mode\n    this.signal = input.signal\n    if (!body && input._bodyInit != null) {\n      body = input._bodyInit\n      input.bodyUsed = true\n    }\n  } else {\n    this.url = String(input)\n  }\n\n  this.credentials = options.credentials || this.credentials || 'same-origin'\n  if (options.headers || !this.headers) {\n    this.headers = new Headers(options.headers)\n  }\n  this.method = normalizeMethod(options.method || this.method || 'GET')\n  this.mode = options.mode || this.mode || null\n  this.signal = options.signal || this.signal\n  this.referrer = null\n\n  if ((this.method === 'GET' || this.method === 'HEAD') && body) {\n    throw new TypeError('Body not allowed for GET or HEAD requests')\n  }\n  this._initBody(body)\n}\n\nRequest.prototype.clone = function() {\n  return new Request(this, {body: this._bodyInit})\n}\n\nfunction decode(body) {\n  var form = new FormData()\n  body\n    .trim()\n    .split('&')\n    .forEach(function(bytes) {\n      if (bytes) {\n        var split = bytes.split('=')\n        var name = split.shift().replace(/\\+/g, ' ')\n        var value = split.join('=').replace(/\\+/g, ' ')\n        form.append(decodeURIComponent(name), decodeURIComponent(value))\n      }\n    })\n  return form\n}\n\nfunction parseHeaders(rawHeaders) {\n  var headers = new Headers()\n  // Replace instances of \\r\\n and \\n followed by at least one space or horizontal tab with a space\n  // https://tools.ietf.org/html/rfc7230#section-3.2\n  var preProcessedHeaders = rawHeaders.replace(/\\r?\\n[\\t ]+/g, ' ')\n  preProcessedHeaders.split(/\\r?\\n/).forEach(function(line) {\n    var parts = line.split(':')\n    var key = parts.shift().trim()\n    if (key) {\n      var value = parts.join(':').trim()\n      headers.append(key, value)\n    }\n  })\n  return headers\n}\n\nBody.call(Request.prototype)\n\nexport function Response(bodyInit, options) {\n  if (!options) {\n    options = {}\n  }\n\n  this.type = 'default'\n  this.status = options.status === undefined ? 200 : options.status\n  this.ok = this.status >= 200 && this.status < 300\n  this.statusText = 'statusText' in options ? options.statusText : 'OK'\n  this.headers = new Headers(options.headers)\n  this.url = options.url || ''\n  this._initBody(bodyInit)\n}\n\nBody.call(Response.prototype)\n\nResponse.prototype.clone = function() {\n  return new Response(this._bodyInit, {\n    status: this.status,\n    statusText: this.statusText,\n    headers: new Headers(this.headers),\n    url: this.url\n  })\n}\n\nResponse.error = function() {\n  var response = new Response(null, {status: 0, statusText: ''})\n  response.type = 'error'\n  return response\n}\n\nvar redirectStatuses = [301, 302, 303, 307, 308]\n\nResponse.redirect = function(url, status) {\n  if (redirectStatuses.indexOf(status) === -1) {\n    throw new RangeError('Invalid status code')\n  }\n\n  return new Response(null, {status: status, headers: {location: url}})\n}\n\nexport var DOMException = self.DOMException\ntry {\n  new DOMException()\n} catch (err) {\n  DOMException = function(message, name) {\n    this.message = message\n    this.name = name\n    var error = Error(message)\n    this.stack = error.stack\n  }\n  DOMException.prototype = Object.create(Error.prototype)\n  DOMException.prototype.constructor = DOMException\n}\n\nexport function fetch(input, init) {\n  return new Promise(function(resolve, reject) {\n    var request = new Request(input, init)\n\n    if (request.signal && request.signal.aborted) {\n      return reject(new DOMException('Aborted', 'AbortError'))\n    }\n\n    var xhr = new XMLHttpRequest()\n\n    function abortXhr() {\n      xhr.abort()\n    }\n\n    xhr.onload = function() {\n      var options = {\n        status: xhr.status,\n        statusText: xhr.statusText,\n        headers: parseHeaders(xhr.getAllResponseHeaders() || '')\n      }\n      options.url = 'responseURL' in xhr ? xhr.responseURL : options.headers.get('X-Request-URL')\n      var body = 'response' in xhr ? xhr.response : xhr.responseText\n      resolve(new Response(body, options))\n    }\n\n    xhr.onerror = function() {\n      reject(new TypeError('Network request failed'))\n    }\n\n    xhr.ontimeout = function() {\n      reject(new TypeError('Network request failed'))\n    }\n\n    xhr.onabort = function() {\n      reject(new DOMException('Aborted', 'AbortError'))\n    }\n\n    xhr.open(request.method, request.url, true)\n\n    if (request.credentials === 'include') {\n      xhr.withCredentials = true\n    } else if (request.credentials === 'omit') {\n      xhr.withCredentials = false\n    }\n\n    if ('responseType' in xhr && support.blob) {\n      xhr.responseType = 'blob'\n    }\n\n    request.headers.forEach(function(value, name) {\n      xhr.setRequestHeader(name, value)\n    })\n\n    if (request.signal) {\n      request.signal.addEventListener('abort', abortXhr)\n\n      xhr.onreadystatechange = function() {\n        // DONE (success or failure)\n        if (xhr.readyState === 4) {\n          request.signal.removeEventListener('abort', abortXhr)\n        }\n      }\n    }\n\n    xhr.send(typeof request._bodyInit === 'undefined' ? null : request._bodyInit)\n  })\n}\n\nfetch.polyfill = true\n\nif (!self.fetch) {\n  self.fetch = fetch\n  self.Headers = Headers\n  self.Request = Request\n  self.Response = Response\n}\n"],"sourceRoot":""}