Upload fetch.js

tests/fetch.js

@@ -0,0 +1,467 @@
+(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
+    }
+  
+    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
+    }
+  
+    // 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 (Array.isArray(headers)) {
+        headers.forEach(function(header) {
+          this.append(header[0], header[1])
+        }, 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 oldValue = this.map[name]
+      this.map[name] = oldValue ? oldValue+','+value : value
+    }
+  
+    Headers.prototype['delete'] = function(name) {
+      delete this.map[normalizeName(name)]
+    }
+  
+    Headers.prototype.get = function(name) {
+      name = normalizeName(name)
+      return this.has(name) ? this.map[name] : null
+    }
+  
+    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) {
+      for (var name in this.map) {
+        if (this.map.hasOwnProperty(name)) {
+          callback.call(thisArg, this.map[name], name, 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)
+          // IE 10-11 can't handle a DataView body.
+          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
+    }
+  
+    // 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 (input instanceof Request) {
+        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
+        }
+      } else {
+        this.url = String(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, { 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()
+      // Replace instances of \r\n and \n followed by at least one space or horizontal tab with a space
+      // https://tools.ietf.org/html/rfc7230#section-3.2
+      var preProcessedHeaders = rawHeaders.replace(/\r?\n[\t ]+/g, ' ')
+      preProcessedHeaders.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 = options.status === undefined ? 200 : options.status
+      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
+        } else if (request.credentials === 'omit') {
+          xhr.withCredentials = false
+        }
+  
+        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);
+