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TextEncoder().encode('test'), {\n stream: true,\n }) === 'test'\n )\n } catch (error) {\n console.log(error)\n }\n return false\n}\n\n// IE, Edge\nif (\n TextDecoder == undefined ||\n TextEncoder == undefined ||\n !supportsStreamOption()\n) {\n TextDecoder = TextDecoderPolyfill\n}\n\nvar k = function () {}\n\nfunction XHRWrapper(xhr) {\n this.withCredentials = false\n this.responseType = ''\n this.readyState = 0\n this.status = 0\n this.statusText = ''\n this.responseText = ''\n this.onprogress = k\n this.onreadystatechange = k\n this._contentType = ''\n this._xhr = xhr\n this._sendTimeout = 0\n this._abort = k\n}\n\nXHRWrapper.prototype.open = function (method, url) {\n this._abort(true)\n\n var that = this\n var xhr = this._xhr\n var state = 1\n var timeout = 0\n\n this._abort = function (silent) {\n if (that._sendTimeout !== 0) {\n clearTimeout(that._sendTimeout)\n that._sendTimeout = 0\n }\n if (state === 1 || state === 2 || state === 3) {\n state = 4\n xhr.onload = k\n xhr.onerror = k\n xhr.onabort = k\n xhr.onprogress = k\n xhr.onreadystatechange = k\n // IE 8 - 9: XDomainRequest#abort() does not fire any event\n // Opera < 10: XMLHttpRequest#abort() does not fire any event\n xhr.abort()\n if (timeout !== 0) {\n clearTimeout(timeout)\n timeout = 0\n }\n if (!silent) {\n that.readyState = 4\n that.onreadystatechange()\n }\n }\n state = 0\n }\n\n var onStart = function () {\n if (state === 1) {\n // state = 2;\n var status = 0\n var statusText = ''\n var contentType = undefined\n if (!('contentType' in xhr)) {\n try {\n status = xhr.status\n statusText = xhr.statusText\n contentType = xhr.getResponseHeader('Content-Type')\n } catch (error) {\n // IE < 10 throws exception for `xhr.status` when xhr.readyState === 2 || xhr.readyState === 3\n // Opera < 11 throws exception for `xhr.status` when xhr.readyState === 2\n // https://bugs.webkit.org/show_bug.cgi?id=29121\n status = 0\n statusText = ''\n contentType = undefined\n // Firefox < 14, Chrome ?, Safari ?\n // https://bugs.webkit.org/show_bug.cgi?id=29658\n // https://bugs.webkit.org/show_bug.cgi?id=77854\n }\n } else {\n status = 200\n statusText = 'OK'\n contentType = xhr.contentType\n }\n if (status !== 0) {\n state = 2\n that.readyState = 2\n that.status = status\n that.statusText = statusText\n that._contentType = contentType\n that.onreadystatechange()\n }\n }\n }\n var onProgress = function () {\n onStart()\n if (state === 2 || state === 3) {\n state = 3\n var responseText = ''\n try {\n responseText = xhr.responseText\n } catch (error) {\n // IE 8 - 9 with XMLHttpRequest\n }\n that.readyState = 3\n that.responseText = responseText\n that.onprogress()\n }\n }\n var onFinish = function () {\n // Firefox 52 fires \"readystatechange\" (xhr.readyState === 4) without final \"readystatechange\" (xhr.readyState === 3)\n // IE 8 fires \"onload\" without \"onprogress\"\n onProgress()\n if (state === 1 || state === 2 || state === 3) {\n state = 4\n if (timeout !== 0) {\n clearTimeout(timeout)\n timeout = 0\n }\n that.readyState = 4\n that.onreadystatechange()\n }\n }\n var onReadyStateChange = function () {\n if (xhr != undefined) {\n // Opera 12\n if (xhr.readyState === 4) {\n onFinish()\n } else if (xhr.readyState === 3) {\n onProgress()\n } else if (xhr.readyState === 2) {\n onStart()\n }\n }\n }\n var onTimeout = function () {\n timeout = setTimeout(function () {\n onTimeout()\n }, 500)\n if (xhr.readyState === 3) {\n onProgress()\n }\n }\n\n // XDomainRequest#abort removes onprogress, onerror, onload\n xhr.onload = onFinish\n xhr.onerror = onFinish\n // improper fix to match Firefox behavior, but it is better than just ignore abort\n // see https://bugzilla.mozilla.org/show_bug.cgi?id=768596\n // https://bugzilla.mozilla.org/show_bug.cgi?id=880200\n // https://code.google.com/p/chromium/issues/detail?id=153570\n // IE 8 fires \"onload\" without \"onprogress\n xhr.onabort = onFinish\n\n // https://bugzilla.mozilla.org/show_bug.cgi?id=736723\n if (\n !('sendAsBinary' in XMLHttpRequest.prototype) &&\n !('mozAnon' in XMLHttpRequest.prototype)\n ) {\n xhr.onprogress = onProgress\n }\n\n // IE 8 - 9 (XMLHTTPRequest)\n // Opera < 12\n // Firefox < 3.5\n // Firefox 3.5 - 3.6 - ? < 9.0\n // onprogress is not fired sometimes or delayed\n // see also #64\n xhr.onreadystatechange = onReadyStateChange\n\n if ('contentType' in xhr) {\n url += (url.indexOf('?') === -1 ? '?' : '&') + 'padding=true'\n }\n xhr.open(method, url, true)\n\n if ('readyState' in xhr) {\n // workaround for Opera 12 issue with \"progress\" events\n // #91\n timeout = setTimeout(function () {\n onTimeout()\n }, 0)\n }\n}\nXHRWrapper.prototype.abort = function () {\n this._abort(false)\n}\nXHRWrapper.prototype.getResponseHeader = function (name) {\n return this._contentType\n}\nXHRWrapper.prototype.setRequestHeader = function (name, value) {\n var xhr = this._xhr\n if ('setRequestHeader' in xhr) {\n xhr.setRequestHeader(name, value)\n }\n}\nXHRWrapper.prototype.getAllResponseHeaders = function () {\n return this._xhr.getAllResponseHeaders != undefined\n ? this._xhr.getAllResponseHeaders()\n : ''\n}\nXHRWrapper.prototype.send = function () {\n // loading indicator in Safari < ? (6), Chrome < 14, Firefox\n if (\n !('ontimeout' in XMLHttpRequest.prototype) &&\n document != undefined &&\n document.readyState != undefined &&\n document.readyState !== 'complete'\n ) {\n var that = this\n that._sendTimeout = setTimeout(function () {\n that._sendTimeout = 0\n that.send()\n }, 4)\n return\n }\n\n var xhr = this._xhr\n // withCredentials should be set after \"open\" for Safari and Chrome (< 19 ?)\n xhr.withCredentials = this.withCredentials\n xhr.responseType = this.responseType\n try {\n // xhr.send(); throws \"Not enough arguments\" in Firefox 3.0\n xhr.send(undefined)\n } catch (error1) {\n // Safari 5.1.7, Opera 12\n throw error1\n }\n}\n\nfunction toLowerCase(name) {\n return name.replace(/[A-Z]/g, function (c) {\n return String.fromCharCode(c.charCodeAt(0) + 0x20)\n })\n}\n\nfunction HeadersPolyfill(all) {\n // Get headers: implemented according to mozilla's example code: https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/getAllResponseHeaders#Example\n var map = Object.create(null)\n var array = all.split('\\r\\n')\n for (var i = 0; i < array.length; i += 1) {\n var line = array[i]\n var parts = line.split(': ')\n var name = parts.shift()\n var value = parts.join(': ')\n map[toLowerCase(name)] = value\n }\n this._map = map\n}\nHeadersPolyfill.prototype.get = function (name) {\n return this._map[toLowerCase(name)]\n}\n\nfunction XHRTransport() {}\n\nXHRTransport.prototype.open = function (\n xhr,\n onStartCallback,\n onProgressCallback,\n onFinishCallback,\n url,\n withCredentials,\n headers\n) {\n xhr.open('GET', url)\n var offset = 0\n xhr.onprogress = function () {\n var responseText = xhr.responseText\n var chunk = responseText.slice(offset)\n offset += chunk.length\n onProgressCallback(chunk)\n }\n xhr.onreadystatechange = function () {\n if (xhr.readyState === 2) {\n var status = xhr.status\n var statusText = xhr.statusText\n var contentType = xhr.getResponseHeader('Content-Type')\n var headers = xhr.getAllResponseHeaders()\n onStartCallback(\n status,\n statusText,\n contentType,\n new HeadersPolyfill(headers),\n function () {\n xhr.abort()\n }\n )\n } else if (xhr.readyState === 4) {\n onFinishCallback()\n }\n }\n xhr.withCredentials = withCredentials\n xhr.responseType = 'text'\n for (var name in headers) {\n if (Object.prototype.hasOwnProperty.call(headers, name)) {\n xhr.setRequestHeader(name, headers[name])\n }\n }\n xhr.send()\n}\n\nfunction HeadersWrapper(headers) {\n this._headers = headers\n}\nHeadersWrapper.prototype.get = function (name) {\n return this._headers.get(name)\n}\n\nfunction FetchTransport() {}\n\nFetchTransport.prototype.open = function (\n xhr,\n onStartCallback,\n onProgressCallback,\n onFinishCallback,\n url,\n withCredentials,\n headers\n) {\n var controller = new AbortController()\n var signal = controller.signal // see #120\n var textDecoder = new TextDecoder()\n fetch(url, {\n headers: headers,\n credentials: withCredentials ? 'include' : 'same-origin',\n signal: signal,\n cache: 'no-store',\n })\n .then(function (response) {\n var reader = response.body.getReader()\n onStartCallback(\n response.status,\n response.statusText,\n response.headers.get('Content-Type'),\n new HeadersWrapper(response.headers),\n function () {\n controller.abort()\n reader.cancel()\n }\n )\n return new Promise(function (resolve, reject) {\n var readNextChunk = function () {\n reader\n .read()\n .then(function (result) {\n if (result.done) {\n // Note: bytes in textDecoder are ignored\n resolve(undefined)\n } else {\n var chunk = textDecoder.decode(result.value, { stream: true })\n onProgressCallback(chunk)\n readNextChunk()\n }\n })\n ['catch'](function (error) {\n reject(error)\n })\n }\n readNextChunk()\n })\n })\n .then(\n function (result) {\n onFinishCallback()\n return result\n },\n function (error) {\n onFinishCallback()\n return Promise.reject(error)\n }\n )\n}\n\nfunction EventTarget() {\n this._listeners = Object.create(null)\n}\n\nfunction throwError(e) {\n setTimeout(function () {\n throw e\n }, 0)\n}\n\nEventTarget.prototype.dispatchEvent = function (event) {\n event.target = this\n var typeListeners = this._listeners[event.type]\n if (typeListeners != undefined) {\n var length = typeListeners.length\n for (var i = 0; i < length; i += 1) {\n var listener = typeListeners[i]\n try {\n if (typeof listener.handleEvent === 'function') {\n listener.handleEvent(event)\n } else {\n listener.call(this, event)\n }\n } catch (e) {\n throwError(e)\n }\n }\n }\n}\nEventTarget.prototype.addEventListener = function (type, listener) {\n type = String(type)\n var listeners = this._listeners\n var typeListeners = listeners[type]\n if (typeListeners == undefined) {\n typeListeners = []\n listeners[type] = typeListeners\n }\n var found = false\n for (var i = 0; i < typeListeners.length; i += 1) {\n if (typeListeners[i] === listener) {\n found = true\n }\n }\n if (!found) {\n typeListeners.push(listener)\n }\n}\nEventTarget.prototype.removeEventListener = function (type, listener) {\n type = String(type)\n var listeners = this._listeners\n var typeListeners = listeners[type]\n if (typeListeners != undefined) {\n var filtered = []\n for (var i = 0; i < typeListeners.length; i += 1) {\n if (typeListeners[i] !== listener) {\n filtered.push(typeListeners[i])\n }\n }\n if (filtered.length === 0) {\n delete listeners[type]\n } else {\n listeners[type] = filtered\n }\n }\n}\n\nfunction Event(type) {\n this.type = type\n this.target = undefined\n}\n\nfunction MessageEvent(type, options) {\n Event.call(this, type)\n this.data = options.data\n this.lastEventId = options.lastEventId\n}\n\nMessageEvent.prototype = Object.create(Event.prototype)\n\nfunction ConnectionEvent(type, options) {\n Event.call(this, type)\n this.status = options.status\n this.statusText = options.statusText\n this.headers = options.headers\n}\n\nConnectionEvent.prototype = Object.create(Event.prototype)\n\nvar WAITING = -1\nvar CONNECTING = 0\nvar OPEN = 1\nvar CLOSED = 2\n\nvar AFTER_CR = -1\nvar FIELD_START = 0\nvar FIELD = 1\nvar VALUE_START = 2\nvar VALUE = 3\n\nvar contentTypeRegExp = /^text\\/event\\-stream;?(\\s*charset\\=utf\\-8)?$/i\n\nvar MINIMUM_DURATION = 1000\nvar MAXIMUM_DURATION = 18000000\n\nvar parseDuration = function (value, def) {\n var n = parseInt(value, 10)\n if (n !== n) {\n n = def\n }\n return clampDuration(n)\n}\nvar clampDuration = function (n) {\n return Math.min(Math.max(n, MINIMUM_DURATION), MAXIMUM_DURATION)\n}\n\nvar fire = function (that, f, event) {\n try {\n if (typeof f === 'function') {\n f.call(that, event)\n }\n } catch (e) {\n throwError(e)\n }\n}\n\nfunction EventSourcePolyfill(url, options) {\n EventTarget.call(this)\n\n this.onopen = undefined\n this.onmessage = undefined\n this.onerror = undefined\n\n this.url = undefined\n this.readyState = undefined\n this.withCredentials = undefined\n\n this._close = undefined\n\n start(this, url, options)\n}\n\nvar isFetchSupported =\n fetch != undefined && Response != undefined && 'body' in Response.prototype\n\nfunction start(es, url, options) {\n url = String(url)\n var withCredentials = options != undefined && Boolean(options.withCredentials)\n\n var initialRetry = clampDuration(1000)\n var heartbeatTimeout =\n options != undefined && options.heartbeatTimeout != undefined\n ? parseDuration(options.heartbeatTimeout, 45000)\n : clampDuration(45000)\n\n var lastEventId = ''\n var retry = initialRetry\n var wasActivity = false\n var headers =\n options != undefined && options.headers != undefined\n ? JSON.parse(JSON.stringify(options.headers))\n : undefined\n var CurrentTransport =\n options != undefined && options.Transport != undefined\n ? options.Transport\n : XMLHttpRequest\n var xhr =\n isFetchSupported &&\n !(options != undefined && options.Transport != undefined)\n ? undefined\n : new XHRWrapper(new CurrentTransport())\n var transport = xhr == undefined ? new FetchTransport() : new XHRTransport()\n var cancelFunction = undefined\n var timeout = 0\n var currentState = WAITING\n var dataBuffer = ''\n var lastEventIdBuffer = ''\n var eventTypeBuffer = ''\n\n var textBuffer = ''\n var state = FIELD_START\n var fieldStart = 0\n var valueStart = 0\n\n var onStart = function (status, statusText, contentType, headers, cancel) {\n if (currentState === CONNECTING) {\n cancelFunction = cancel\n if (\n status === 200 &&\n contentType != undefined &&\n contentTypeRegExp.test(contentType)\n ) {\n currentState = OPEN\n wasActivity = true\n retry = initialRetry\n es.readyState = OPEN\n var event = new ConnectionEvent('open', {\n status: status,\n statusText: statusText,\n headers: headers,\n })\n es.dispatchEvent(event)\n fire(es, es.onopen, event)\n } else {\n var message = ''\n if (status !== 200) {\n if (statusText) {\n statusText = statusText.replace(/\\s+/g, ' ')\n }\n message =\n \"EventSource's response has a status \" +\n status +\n ' ' +\n statusText +\n ' that is not 200. Aborting the connection.'\n } else {\n message =\n \"EventSource's response has a Content-Type specifying an unsupported type: \" +\n (contentType == undefined\n ? '-'\n : contentType.replace(/\\s+/g, ' ')) +\n '. Aborting the connection.'\n }\n throwError(new Error(message))\n close()\n var event = new ConnectionEvent('error', {\n status: status,\n statusText: statusText,\n headers: headers,\n })\n es.dispatchEvent(event)\n fire(es, es.onerror, event)\n }\n }\n }\n\n var onProgress = function (textChunk) {\n if (currentState === OPEN) {\n var n = -1\n for (var i = 0; i < textChunk.length; i += 1) {\n var c = textChunk.charCodeAt(i)\n if (c === '\\n'.charCodeAt(0) || c === '\\r'.charCodeAt(0)) {\n n = i\n }\n }\n var chunk = (n !== -1 ? textBuffer : '') + textChunk.slice(0, n + 1)\n textBuffer = (n === -1 ? textBuffer : '') + textChunk.slice(n + 1)\n if (chunk !== '') {\n wasActivity = true\n }\n for (var position = 0; position < chunk.length; position += 1) {\n var c = chunk.charCodeAt(position)\n if (state === AFTER_CR && c === '\\n'.charCodeAt(0)) {\n state = FIELD_START\n } else {\n if (state === AFTER_CR) {\n state = FIELD_START\n }\n if (c === '\\r'.charCodeAt(0) || c === '\\n'.charCodeAt(0)) {\n if (state !== FIELD_START) {\n if (state === FIELD) {\n valueStart = position + 1\n }\n var field = chunk.slice(fieldStart, valueStart - 1)\n var value = chunk.slice(\n valueStart +\n (valueStart < position &&\n chunk.charCodeAt(valueStart) === ' '.charCodeAt(0)\n ? 1\n : 0),\n position\n )\n if (field === 'data') {\n dataBuffer += '\\n'\n dataBuffer += value\n } else if (field === 'id') {\n lastEventIdBuffer = value\n } else if (field === 'event') {\n eventTypeBuffer = value\n } else if (field === 'retry') {\n initialRetry = parseDuration(value, initialRetry)\n retry = initialRetry\n } else if (field === 'heartbeatTimeout') {\n heartbeatTimeout = parseDuration(value, heartbeatTimeout)\n if (timeout !== 0) {\n clearTimeout(timeout)\n timeout = setTimeout(function () {\n onTimeout()\n }, heartbeatTimeout)\n }\n }\n }\n if (state === FIELD_START) {\n if (dataBuffer !== '') {\n lastEventId = lastEventIdBuffer\n if (eventTypeBuffer === '') {\n eventTypeBuffer = 'message'\n }\n var event = new MessageEvent(eventTypeBuffer, {\n data: dataBuffer.slice(1),\n lastEventId: lastEventIdBuffer,\n })\n es.dispatchEvent(event)\n if (eventTypeBuffer === 'message') {\n fire(es, es.onmessage, event)\n }\n if (currentState === CLOSED) {\n return\n }\n }\n dataBuffer = ''\n eventTypeBuffer = ''\n }\n state = c === '\\r'.charCodeAt(0) ? AFTER_CR : FIELD_START\n } else {\n if (state === FIELD_START) {\n fieldStart = position\n state = FIELD\n }\n if (state === FIELD) {\n if (c === ':'.charCodeAt(0)) {\n valueStart = position + 1\n state = VALUE_START\n }\n } else if (state === VALUE_START) {\n state = VALUE\n }\n }\n }\n }\n }\n }\n\n var onFinish = function () {\n if (currentState === OPEN || currentState === CONNECTING) {\n currentState = WAITING\n if (timeout !== 0) {\n clearTimeout(timeout)\n timeout = 0\n }\n timeout = setTimeout(function () {\n onTimeout()\n }, retry)\n retry = clampDuration(Math.min(initialRetry * 16, retry * 2))\n\n es.readyState = CONNECTING\n var event = new Event('error')\n es.dispatchEvent(event)\n fire(es, es.onerror, event)\n }\n }\n\n var close = function () {\n currentState = CLOSED\n if (cancelFunction != undefined) {\n cancelFunction()\n cancelFunction = undefined\n }\n if (timeout !== 0) {\n clearTimeout(timeout)\n timeout = 0\n }\n es.readyState = CLOSED\n }\n\n var onTimeout = function () {\n timeout = 0\n\n if (currentState !== WAITING) {\n if (!wasActivity && cancelFunction != undefined) {\n throwError(\n new Error(\n 'No activity within ' +\n heartbeatTimeout +\n ' milliseconds. Reconnecting.'\n )\n )\n cancelFunction()\n cancelFunction = undefined\n } else {\n wasActivity = false\n timeout = setTimeout(function () {\n onTimeout()\n }, heartbeatTimeout)\n }\n return\n }\n\n wasActivity = false\n timeout = setTimeout(function () {\n onTimeout()\n }, heartbeatTimeout)\n\n currentState = CONNECTING\n dataBuffer = ''\n eventTypeBuffer = ''\n lastEventIdBuffer = lastEventId\n textBuffer = ''\n fieldStart = 0\n valueStart = 0\n state = FIELD_START\n\n // https://bugzilla.mozilla.org/show_bug.cgi?id=428916\n // Request header field Last-Event-ID is not allowed by Access-Control-Allow-Headers.\n var requestURL = url\n if (url.slice(0, 5) !== 'data:' && url.slice(0, 5) !== 'blob:') {\n if (lastEventId !== '') {\n requestURL +=\n (url.indexOf('?') === -1 ? '?' : '&') +\n 'lastEventId=' +\n encodeURIComponent(lastEventId)\n }\n }\n var requestHeaders = {}\n requestHeaders['Accept'] = 'text/event-stream'\n if (headers != undefined) {\n for (var name in headers) {\n if (Object.prototype.hasOwnProperty.call(headers, name)) {\n requestHeaders[name] = headers[name]\n }\n }\n }\n try {\n transport.open(\n xhr,\n onStart,\n onProgress,\n onFinish,\n requestURL,\n withCredentials,\n requestHeaders\n )\n } catch (error) {\n close()\n throw error\n }\n }\n\n es.url = url\n es.readyState = CONNECTING\n es.withCredentials = withCredentials\n es._close = close\n\n onTimeout()\n}\n\nEventSourcePolyfill.prototype = Object.create(EventTarget.prototype)\nEventSourcePolyfill.prototype.CONNECTING = CONNECTING\nEventSourcePolyfill.prototype.OPEN = OPEN\nEventSourcePolyfill.prototype.CLOSED = CLOSED\nEventSourcePolyfill.prototype.close = function () {\n this._close()\n}\n\nEventSourcePolyfill.CONNECTING = CONNECTING\nEventSourcePolyfill.OPEN = OPEN\nEventSourcePolyfill.CLOSED = CLOSED\nEventSourcePolyfill.prototype.withCredentials = undefined\n\nexport default EventSourcePolyfill\n"]} |