import Stream from 'stream'; import http from 'http'; import Url from 'url'; import whatwgUrl from 'whatwg-url'; import https from 'https'; import zlib from 'zlib'; // Based on https://github.com/tmpvar/jsdom/blob/aa85b2abf07766ff7bf5c1f6daafb3726f2f2db5/lib/jsdom/living/blob.js // fix for "Readable" isn't a named export issue const Readable = Stream.Readable; const BUFFER = Symbol('buffer'); const TYPE = Symbol('type'); class Blob { constructor() { this[TYPE] = ''; const blobParts = arguments[0]; const options = arguments[1]; const buffers = []; let size = 0; if (blobParts) { const a = blobParts; const length = Number(a.length); for (let i = 0; i < length; i++) { const element = a[i]; let buffer; if (element instanceof Buffer) { buffer = element; } else if (ArrayBuffer.isView(element)) { buffer = Buffer.from(element.buffer, element.byteOffset, element.byteLength); } else if (element instanceof ArrayBuffer) { buffer = Buffer.from(element); } else if (element instanceof Blob) { buffer = element[BUFFER]; } else { buffer = Buffer.from(typeof element === 'string' ? element : String(element)); } size += buffer.length; buffers.push(buffer); } } this[BUFFER] = Buffer.concat(buffers); let type = options && options.type !== undefined && String(options.type).toLowerCase(); if (type && !/[^\u0020-\u007E]/.test(type)) { this[TYPE] = type; } } get size() { return this[BUFFER].length; } get type() { return this[TYPE]; } text() { return Promise.resolve(this[BUFFER].toString()); } arrayBuffer() { const buf = this[BUFFER]; const ab = buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength); return Promise.resolve(ab); } stream() { const readable = new Readable(); readable._read = function () {}; readable.push(this[BUFFER]); readable.push(null); return readable; } toString() { return '[object Blob]'; } slice() { const size = this.size; const start = arguments[0]; const end = arguments[1]; let relativeStart, relativeEnd; if (start === undefined) { relativeStart = 0; } else if (start < 0) { relativeStart = Math.max(size + start, 0); } else { relativeStart = Math.min(start, size); } if (end === undefined) { relativeEnd = size; } else if (end < 0) { relativeEnd = Math.max(size + end, 0); } else { relativeEnd = Math.min(end, size); } const span = Math.max(relativeEnd - relativeStart, 0); const buffer = this[BUFFER]; const slicedBuffer = buffer.slice(relativeStart, relativeStart + span); const blob = new Blob([], { type: arguments[2] }); blob[BUFFER] = slicedBuffer; return blob; } } Object.defineProperties(Blob.prototype, { size: { enumerable: true }, type: { enumerable: true }, slice: { enumerable: true } }); Object.defineProperty(Blob.prototype, Symbol.toStringTag, { value: 'Blob', writable: false, enumerable: false, configurable: true }); /** * fetch-error.js * * FetchError interface for operational errors */ /** * Create FetchError instance * * @param String message Error message for human * @param String type Error type for machine * @param String systemError For Node.js system error * @return FetchError */ function FetchError(message, type, systemError) { Error.call(this, message); this.message = message; this.type = type; // when err.type is `system`, err.code contains system error code if (systemError) { this.code = this.errno = systemError.code; } // hide custom error implementation details from end-users Error.captureStackTrace(this, this.constructor); } FetchError.prototype = Object.create(Error.prototype); FetchError.prototype.constructor = FetchError; FetchError.prototype.name = 'FetchError'; let convert; try { convert = require('encoding').convert; } catch (e) {} const INTERNALS = Symbol('Body internals'); // fix an issue where "PassThrough" isn't a named export for node <10 const PassThrough = Stream.PassThrough; /** * Body mixin * * Ref: https://fetch.spec.whatwg.org/#body * * @param Stream body Readable stream * @param Object opts Response options * @return Void */ function Body(body) { var _this = this; var _ref = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}, _ref$size = _ref.size; let size = _ref$size === undefined ? 0 : _ref$size; var _ref$timeout = _ref.timeout; let timeout = _ref$timeout === undefined ? 0 : _ref$timeout; if (body == null) { // body is undefined or null body = null; } else if (isURLSearchParams(body)) { // body is a URLSearchParams body = Buffer.from(body.toString()); } else if (isBlob(body)) ; else if (Buffer.isBuffer(body)) ; else if (Object.prototype.toString.call(body) === '[object ArrayBuffer]') { // body is ArrayBuffer body = Buffer.from(body); } else if (ArrayBuffer.isView(body)) { // body is ArrayBufferView body = Buffer.from(body.buffer, body.byteOffset, body.byteLength); } else if (body instanceof Stream) ; else { // none of the above // coerce to string then buffer body = Buffer.from(String(body)); } this[INTERNALS] = { body, disturbed: false, error: null }; this.size = size; this.timeout = timeout; if (body instanceof Stream) { body.on('error', function (err) { const error = err.name === 'AbortError' ? err : new FetchError(`Invalid response body while trying to fetch ${_this.url}: ${err.message}`, 'system', err); _this[INTERNALS].error = error; }); } } Body.prototype = { get body() { return this[INTERNALS].body; }, get bodyUsed() { return this[INTERNALS].disturbed; }, /** * Decode response as ArrayBuffer * * @return Promise */ arrayBuffer() { return consumeBody.call(this).then(function (buf) { return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength); }); }, /** * Return raw response as Blob * * @return Promise */ blob() { let ct = this.headers && this.headers.get('content-type') || ''; return consumeBody.call(this).then(function (buf) { return Object.assign( // Prevent copying new Blob([], { type: ct.toLowerCase() }), { [BUFFER]: buf }); }); }, /** * Decode response as json * * @return Promise */ json() { var _this2 = this; return consumeBody.call(this).then(function (buffer) { try { return JSON.parse(buffer.toString()); } catch (err) { return Body.Promise.reject(new FetchError(`invalid json response body at ${_this2.url} reason: ${err.message}`, 'invalid-json')); } }); }, /** * Decode response as text * * @return Promise */ text() { return consumeBody.call(this).then(function (buffer) { return buffer.toString(); }); }, /** * Decode response as buffer (non-spec api) * * @return Promise */ buffer() { return consumeBody.call(this); }, /** * Decode response as text, while automatically detecting the encoding and * trying to decode to UTF-8 (non-spec api) * * @return Promise */ textConverted() { var _this3 = this; return consumeBody.call(this).then(function (buffer) { return convertBody(buffer, _this3.headers); }); } }; // In browsers, all properties are enumerable. Object.defineProperties(Body.prototype, { body: { enumerable: true }, bodyUsed: { enumerable: true }, arrayBuffer: { enumerable: true }, blob: { enumerable: true }, json: { enumerable: true }, text: { enumerable: true } }); Body.mixIn = function (proto) { for (const name of Object.getOwnPropertyNames(Body.prototype)) { // istanbul ignore else: future proof if (!(name in proto)) { const desc = Object.getOwnPropertyDescriptor(Body.prototype, name); Object.defineProperty(proto, name, desc); } } }; /** * Consume and convert an entire Body to a Buffer. * * Ref: https://fetch.spec.whatwg.org/#concept-body-consume-body * * @return Promise */ function consumeBody() { var _this4 = this; if (this[INTERNALS].disturbed) { return Body.Promise.reject(new TypeError(`body used already for: ${this.url}`)); } this[INTERNALS].disturbed = true; if (this[INTERNALS].error) { return Body.Promise.reject(this[INTERNALS].error); } let body = this.body; // body is null if (body === null) { return Body.Promise.resolve(Buffer.alloc(0)); } // body is blob if (isBlob(body)) { body = body.stream(); } // body is buffer if (Buffer.isBuffer(body)) { return Body.Promise.resolve(body); } // istanbul ignore if: should never happen if (!(body instanceof Stream)) { return Body.Promise.resolve(Buffer.alloc(0)); } // body is stream // get ready to actually consume the body let accum = []; let accumBytes = 0; let abort = false; return new Body.Promise(function (resolve, reject) { let resTimeout; // allow timeout on slow response body if (_this4.timeout) { resTimeout = setTimeout(function () { abort = true; reject(new FetchError(`Response timeout while trying to fetch ${_this4.url} (over ${_this4.timeout}ms)`, 'body-timeout')); }, _this4.timeout); } // handle stream errors body.on('error', function (err) { if (err.name === 'AbortError') { // if the request was aborted, reject with this Error abort = true; reject(err); } else { // other errors, such as incorrect content-encoding reject(new FetchError(`Invalid response body while trying to fetch ${_this4.url}: ${err.message}`, 'system', err)); } }); body.on('data', function (chunk) { if (abort || chunk === null) { return; } if (_this4.size && accumBytes + chunk.length > _this4.size) { abort = true; reject(new FetchError(`content size at ${_this4.url} over limit: ${_this4.size}`, 'max-size')); return; } accumBytes += chunk.length; accum.push(chunk); }); body.on('end', function () { if (abort) { return; } clearTimeout(resTimeout); try { resolve(Buffer.concat(accum, accumBytes)); } catch (err) { // handle streams that have accumulated too much data (issue #414) reject(new FetchError(`Could not create Buffer from response body for ${_this4.url}: ${err.message}`, 'system', err)); } }); }); } /** * Detect buffer encoding and convert to target encoding * ref: http://www.w3.org/TR/2011/WD-html5-20110113/parsing.html#determining-the-character-encoding * * @param Buffer buffer Incoming buffer * @param String encoding Target encoding * @return String */ function convertBody(buffer, headers) { if (typeof convert !== 'function') { throw new Error('The package `encoding` must be installed to use the textConverted() function'); } const ct = headers.get('content-type'); let charset = 'utf-8'; let res, str; // header if (ct) { res = /charset=([^;]*)/i.exec(ct); } // no charset in content type, peek at response body for at most 1024 bytes str = buffer.slice(0, 1024).toString(); // html5 if (!res && str) { res = / 0 && arguments[0] !== undefined ? arguments[0] : undefined; this[MAP] = Object.create(null); if (init instanceof Headers) { const rawHeaders = init.raw(); const headerNames = Object.keys(rawHeaders); for (const headerName of headerNames) { for (const value of rawHeaders[headerName]) { this.append(headerName, value); } } return; } // We don't worry about converting prop to ByteString here as append() // will handle it. if (init == null) ; else if (typeof init === 'object') { const method = init[Symbol.iterator]; if (method != null) { if (typeof method !== 'function') { throw new TypeError('Header pairs must be iterable'); } // sequence> // Note: per spec we have to first exhaust the lists then process them const pairs = []; for (const pair of init) { if (typeof pair !== 'object' || typeof pair[Symbol.iterator] !== 'function') { throw new TypeError('Each header pair must be iterable'); } pairs.push(Array.from(pair)); } for (const pair of pairs) { if (pair.length !== 2) { throw new TypeError('Each header pair must be a name/value tuple'); } this.append(pair[0], pair[1]); } } else { // record for (const key of Object.keys(init)) { const value = init[key]; this.append(key, value); } } } else { throw new TypeError('Provided initializer must be an object'); } } /** * Return combined header value given name * * @param String name Header name * @return Mixed */ get(name) { name = `${name}`; validateName(name); const key = find(this[MAP], name); if (key === undefined) { return null; } return this[MAP][key].join(', '); } /** * Iterate over all headers * * @param Function callback Executed for each item with parameters (value, name, thisArg) * @param Boolean thisArg `this` context for callback function * @return Void */ forEach(callback) { let thisArg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : undefined; let pairs = getHeaders(this); let i = 0; while (i < pairs.length) { var _pairs$i = pairs[i]; const name = _pairs$i[0], value = _pairs$i[1]; callback.call(thisArg, value, name, this); pairs = getHeaders(this); i++; } } /** * Overwrite header values given name * * @param String name Header name * @param String value Header value * @return Void */ set(name, value) { name = `${name}`; value = `${value}`; validateName(name); validateValue(value); const key = find(this[MAP], name); this[MAP][key !== undefined ? key : name] = [value]; } /** * Append a value onto existing header * * @param String name Header name * @param String value Header value * @return Void */ append(name, value) { name = `${name}`; value = `${value}`; validateName(name); validateValue(value); const key = find(this[MAP], name); if (key !== undefined) { this[MAP][key].push(value); } else { this[MAP][name] = [value]; } } /** * Check for header name existence * * @param String name Header name * @return Boolean */ has(name) { name = `${name}`; validateName(name); return find(this[MAP], name) !== undefined; } /** * Delete all header values given name * * @param String name Header name * @return Void */ delete(name) { name = `${name}`; validateName(name); const key = find(this[MAP], name); if (key !== undefined) { delete this[MAP][key]; } } /** * Return raw headers (non-spec api) * * @return Object */ raw() { return this[MAP]; } /** * Get an iterator on keys. * * @return Iterator */ keys() { return createHeadersIterator(this, 'key'); } /** * Get an iterator on values. * * @return Iterator */ values() { return createHeadersIterator(this, 'value'); } /** * Get an iterator on entries. * * This is the default iterator of the Headers object. * * @return Iterator */ [Symbol.iterator]() { return createHeadersIterator(this, 'key+value'); } } Headers.prototype.entries = Headers.prototype[Symbol.iterator]; Object.defineProperty(Headers.prototype, Symbol.toStringTag, { value: 'Headers', writable: false, enumerable: false, configurable: true }); Object.defineProperties(Headers.prototype, { get: { enumerable: true }, forEach: { enumerable: true }, set: { enumerable: true }, append: { enumerable: true }, has: { enumerable: true }, delete: { enumerable: true }, keys: { enumerable: true }, values: { enumerable: true }, entries: { enumerable: true } }); function getHeaders(headers) { let kind = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'key+value'; const keys = Object.keys(headers[MAP]).sort(); return keys.map(kind === 'key' ? function (k) { return k.toLowerCase(); } : kind === 'value' ? function (k) { return headers[MAP][k].join(', '); } : function (k) { return [k.toLowerCase(), headers[MAP][k].join(', ')]; }); } const INTERNAL = Symbol('internal'); function createHeadersIterator(target, kind) { const iterator = Object.create(HeadersIteratorPrototype); iterator[INTERNAL] = { target, kind, index: 0 }; return iterator; } const HeadersIteratorPrototype = Object.setPrototypeOf({ next() { // istanbul ignore if if (!this || Object.getPrototypeOf(this) !== HeadersIteratorPrototype) { throw new TypeError('Value of `this` is not a HeadersIterator'); } var _INTERNAL = this[INTERNAL]; const target = _INTERNAL.target, kind = _INTERNAL.kind, index = _INTERNAL.index; const values = getHeaders(target, kind); const len = values.length; if (index >= len) { return { value: undefined, done: true }; } this[INTERNAL].index = index + 1; return { value: values[index], done: false }; } }, Object.getPrototypeOf(Object.getPrototypeOf([][Symbol.iterator]()))); Object.defineProperty(HeadersIteratorPrototype, Symbol.toStringTag, { value: 'HeadersIterator', writable: false, enumerable: false, configurable: true }); /** * Export the Headers object in a form that Node.js can consume. * * @param Headers headers * @return Object */ function exportNodeCompatibleHeaders(headers) { const obj = Object.assign({ __proto__: null }, headers[MAP]); // http.request() only supports string as Host header. This hack makes // specifying custom Host header possible. const hostHeaderKey = find(headers[MAP], 'Host'); if (hostHeaderKey !== undefined) { obj[hostHeaderKey] = obj[hostHeaderKey][0]; } return obj; } /** * Create a Headers object from an object of headers, ignoring those that do * not conform to HTTP grammar productions. * * @param Object obj Object of headers * @return Headers */ function createHeadersLenient(obj) { const headers = new Headers(); for (const name of Object.keys(obj)) { if (invalidTokenRegex.test(name)) { continue; } if (Array.isArray(obj[name])) { for (const val of obj[name]) { if (invalidHeaderCharRegex.test(val)) { continue; } if (headers[MAP][name] === undefined) { headers[MAP][name] = [val]; } else { headers[MAP][name].push(val); } } } else if (!invalidHeaderCharRegex.test(obj[name])) { headers[MAP][name] = [obj[name]]; } } return headers; } const INTERNALS$1 = Symbol('Response internals'); // fix an issue where "STATUS_CODES" aren't a named export for node <10 const STATUS_CODES = http.STATUS_CODES; /** * Response class * * @param Stream body Readable stream * @param Object opts Response options * @return Void */ class Response { constructor() { let body = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : null; let opts = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; Body.call(this, body, opts); const status = opts.status || 200; const headers = new Headers(opts.headers); if (body != null && !headers.has('Content-Type')) { const contentType = extractContentType(body); if (contentType) { headers.append('Content-Type', contentType); } } this[INTERNALS$1] = { url: opts.url, status, statusText: opts.statusText || STATUS_CODES[status], headers, counter: opts.counter }; } get url() { return this[INTERNALS$1].url || ''; } get status() { return this[INTERNALS$1].status; } /** * Convenience property representing if the request ended normally */ get ok() { return this[INTERNALS$1].status >= 200 && this[INTERNALS$1].status < 300; } get redirected() { return this[INTERNALS$1].counter > 0; } get statusText() { return this[INTERNALS$1].statusText; } get headers() { return this[INTERNALS$1].headers; } /** * Clone this response * * @return Response */ clone() { return new Response(clone(this), { url: this.url, status: this.status, statusText: this.statusText, headers: this.headers, ok: this.ok, redirected: this.redirected }); } } Body.mixIn(Response.prototype); Object.defineProperties(Response.prototype, { url: { enumerable: true }, status: { enumerable: true }, ok: { enumerable: true }, redirected: { enumerable: true }, statusText: { enumerable: true }, headers: { enumerable: true }, clone: { enumerable: true } }); Object.defineProperty(Response.prototype, Symbol.toStringTag, { value: 'Response', writable: false, enumerable: false, configurable: true }); const INTERNALS$2 = Symbol('Request internals'); const URL = whatwgUrl.URL; // fix an issue where "format", "parse" aren't a named export for node <10 const parse_url = Url.parse; const format_url = Url.format; /** * Wrapper around `new URL` to handle arbitrary URLs * * @param {string} urlStr * @return {void} */ function parseURL(urlStr) { /* Check whether the URL is absolute or not Scheme: https://tools.ietf.org/html/rfc3986#section-3.1 Absolute URL: https://tools.ietf.org/html/rfc3986#section-4.3 */ if (/^[a-zA-Z][a-zA-Z\d+\-.]*:/.exec(urlStr)) { urlStr = new URL(urlStr).toString(); } // Fallback to old implementation for arbitrary URLs return parse_url(urlStr); } const streamDestructionSupported = 'destroy' in Stream.Readable.prototype; /** * Check if a value is an instance of Request. * * @param Mixed input * @return Boolean */ function isRequest(input) { return typeof input === 'object' && typeof input[INTERNALS$2] === 'object'; } function isAbortSignal(signal) { const proto = signal && typeof signal === 'object' && Object.getPrototypeOf(signal); return !!(proto && proto.constructor.name === 'AbortSignal'); } /** * Request class * * @param Mixed input Url or Request instance * @param Object init Custom options * @return Void */ class Request { constructor(input) { let init = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {}; let parsedURL; // normalize input if (!isRequest(input)) { if (input && input.href) { // in order to support Node.js' Url objects; though WHATWG's URL objects // will fall into this branch also (since their `toString()` will return // `href` property anyway) parsedURL = parseURL(input.href); } else { // coerce input to a string before attempting to parse parsedURL = parseURL(`${input}`); } input = {}; } else { parsedURL = parseURL(input.url); } let method = init.method || input.method || 'GET'; method = method.toUpperCase(); if ((init.body != null || isRequest(input) && input.body !== null) && (method === 'GET' || method === 'HEAD')) { throw new TypeError('Request with GET/HEAD method cannot have body'); } let inputBody = init.body != null ? init.body : isRequest(input) && input.body !== null ? clone(input) : null; Body.call(this, inputBody, { timeout: init.timeout || input.timeout || 0, size: init.size || input.size || 0 }); const headers = new Headers(init.headers || input.headers || {}); if (inputBody != null && !headers.has('Content-Type')) { const contentType = extractContentType(inputBody); if (contentType) { headers.append('Content-Type', contentType); } } let signal = isRequest(input) ? input.signal : null; if ('signal' in init) signal = init.signal; if (signal != null && !isAbortSignal(signal)) { throw new TypeError('Expected signal to be an instanceof AbortSignal'); } this[INTERNALS$2] = { method, redirect: init.redirect || input.redirect || 'follow', headers, parsedURL, signal }; // node-fetch-only options this.follow = init.follow !== undefined ? init.follow : input.follow !== undefined ? input.follow : 20; this.compress = init.compress !== undefined ? init.compress : input.compress !== undefined ? input.compress : true; this.counter = init.counter || input.counter || 0; this.agent = init.agent || input.agent; } get method() { return this[INTERNALS$2].method; } get url() { return format_url(this[INTERNALS$2].parsedURL); } get headers() { return this[INTERNALS$2].headers; } get redirect() { return this[INTERNALS$2].redirect; } get signal() { return this[INTERNALS$2].signal; } /** * Clone this request * * @return Request */ clone() { return new Request(this); } } Body.mixIn(Request.prototype); Object.defineProperty(Request.prototype, Symbol.toStringTag, { value: 'Request', writable: false, enumerable: false, configurable: true }); Object.defineProperties(Request.prototype, { method: { enumerable: true }, url: { enumerable: true }, headers: { enumerable: true }, redirect: { enumerable: true }, clone: { enumerable: true }, signal: { enumerable: true } }); /** * Convert a Request to Node.js http request options. * * @param Request A Request instance * @return Object The options object to be passed to http.request */ function getNodeRequestOptions(request) { const parsedURL = request[INTERNALS$2].parsedURL; const headers = new Headers(request[INTERNALS$2].headers); // fetch step 1.3 if (!headers.has('Accept')) { headers.set('Accept', '*/*'); } // Basic fetch if (!parsedURL.protocol || !parsedURL.hostname) { throw new TypeError('Only absolute URLs are supported'); } if (!/^https?:$/.test(parsedURL.protocol)) { throw new TypeError('Only HTTP(S) protocols are supported'); } if (request.signal && request.body instanceof Stream.Readable && !streamDestructionSupported) { throw new Error('Cancellation of streamed requests with AbortSignal is not supported in node < 8'); } // HTTP-network-or-cache fetch steps 2.4-2.7 let contentLengthValue = null; if (request.body == null && /^(POST|PUT)$/i.test(request.method)) { contentLengthValue = '0'; } if (request.body != null) { const totalBytes = getTotalBytes(request); if (typeof totalBytes === 'number') { contentLengthValue = String(totalBytes); } } if (contentLengthValue) { headers.set('Content-Length', contentLengthValue); } // HTTP-network-or-cache fetch step 2.11 if (!headers.has('User-Agent')) { headers.set('User-Agent', 'node-fetch/1.0 (+https://github.com/bitinn/node-fetch)'); } // HTTP-network-or-cache fetch step 2.15 if (request.compress && !headers.has('Accept-Encoding')) { headers.set('Accept-Encoding', 'gzip,deflate'); } let agent = request.agent; if (typeof agent === 'function') { agent = agent(parsedURL); } if (!headers.has('Connection') && !agent) { headers.set('Connection', 'close'); } // HTTP-network fetch step 4.2 // chunked encoding is handled by Node.js return Object.assign({}, parsedURL, { method: request.method, headers: exportNodeCompatibleHeaders(headers), agent }); } /** * abort-error.js * * AbortError interface for cancelled requests */ /** * Create AbortError instance * * @param String message Error message for human * @return AbortError */ function AbortError(message) { Error.call(this, message); this.type = 'aborted'; this.message = message; // hide custom error implementation details from end-users Error.captureStackTrace(this, this.constructor); } AbortError.prototype = Object.create(Error.prototype); AbortError.prototype.constructor = AbortError; AbortError.prototype.name = 'AbortError'; // fix an issue where "PassThrough", "resolve" aren't a named export for node <10 const PassThrough$1 = Stream.PassThrough; const resolve_url = Url.resolve; /** * Fetch function * * @param Mixed url Absolute url or Request instance * @param Object opts Fetch options * @return Promise */ function fetch(url, opts) { // allow custom promise if (!fetch.Promise) { throw new Error('native promise missing, set fetch.Promise to your favorite alternative'); } Body.Promise = fetch.Promise; // wrap http.request into fetch return new fetch.Promise(function (resolve, reject) { // build request object const request = new Request(url, opts); const options = getNodeRequestOptions(request); const send = (options.protocol === 'https:' ? https : http).request; const signal = request.signal; let response = null; const abort = function abort() { let error = new AbortError('The user aborted a request.'); reject(error); if (request.body && request.body instanceof Stream.Readable) { request.body.destroy(error); } if (!response || !response.body) return; response.body.emit('error', error); }; if (signal && signal.aborted) { abort(); return; } const abortAndFinalize = function abortAndFinalize() { abort(); finalize(); }; // send request const req = send(options); let reqTimeout; if (signal) { signal.addEventListener('abort', abortAndFinalize); } function finalize() { req.abort(); if (signal) signal.removeEventListener('abort', abortAndFinalize); clearTimeout(reqTimeout); } if (request.timeout) { req.once('socket', function (socket) { reqTimeout = setTimeout(function () { reject(new FetchError(`network timeout at: ${request.url}`, 'request-timeout')); finalize(); }, request.timeout); }); } req.on('error', function (err) { reject(new FetchError(`request to ${request.url} failed, reason: ${err.message}`, 'system', err)); finalize(); }); req.on('response', function (res) { clearTimeout(reqTimeout); const headers = createHeadersLenient(res.headers); // HTTP fetch step 5 if (fetch.isRedirect(res.statusCode)) { // HTTP fetch step 5.2 const location = headers.get('Location'); // HTTP fetch step 5.3 const locationURL = location === null ? null : resolve_url(request.url, location); // HTTP fetch step 5.5 switch (request.redirect) { case 'error': reject(new FetchError(`uri requested responds with a redirect, redirect mode is set to error: ${request.url}`, 'no-redirect')); finalize(); return; case 'manual': // node-fetch-specific step: make manual redirect a bit easier to use by setting the Location header value to the resolved URL. if (locationURL !== null) { // handle corrupted header try { headers.set('Location', locationURL); } catch (err) { // istanbul ignore next: nodejs server prevent invalid response headers, we can't test this through normal request reject(err); } } break; case 'follow': // HTTP-redirect fetch step 2 if (locationURL === null) { break; } // HTTP-redirect fetch step 5 if (request.counter >= request.follow) { reject(new FetchError(`maximum redirect reached at: ${request.url}`, 'max-redirect')); finalize(); return; } // HTTP-redirect fetch step 6 (counter increment) // Create a new Request object. const requestOpts = { headers: new Headers(request.headers), follow: request.follow, counter: request.counter + 1, agent: request.agent, compress: request.compress, method: request.method, body: request.body, signal: request.signal, timeout: request.timeout, size: request.size }; // HTTP-redirect fetch step 9 if (res.statusCode !== 303 && request.body && getTotalBytes(request) === null) { reject(new FetchError('Cannot follow redirect with body being a readable stream', 'unsupported-redirect')); finalize(); return; } // HTTP-redirect fetch step 11 if (res.statusCode === 303 || (res.statusCode === 301 || res.statusCode === 302) && request.method === 'POST') { requestOpts.method = 'GET'; requestOpts.body = undefined; requestOpts.headers.delete('content-length'); } // HTTP-redirect fetch step 15 resolve(fetch(new Request(locationURL, requestOpts))); finalize(); return; } } // prepare response res.once('end', function () { if (signal) signal.removeEventListener('abort', abortAndFinalize); }); let body = res.pipe(new PassThrough$1()); const response_options = { url: request.url, status: res.statusCode, statusText: res.statusMessage, headers: headers, size: request.size, timeout: request.timeout, counter: request.counter }; // HTTP-network fetch step 12.1.1.3 const codings = headers.get('Content-Encoding'); // HTTP-network fetch step 12.1.1.4: handle content codings // in following scenarios we ignore compression support // 1. compression support is disabled // 2. HEAD request // 3. no Content-Encoding header // 4. no content response (204) // 5. content not modified response (304) if (!request.compress || request.method === 'HEAD' || codings === null || res.statusCode === 204 || res.statusCode === 304) { response = new Response(body, response_options); resolve(response); return; } // For Node v6+ // Be less strict when decoding compressed responses, since sometimes // servers send slightly invalid responses that are still accepted // by common browsers. // Always using Z_SYNC_FLUSH is what cURL does. const zlibOptions = { flush: zlib.Z_SYNC_FLUSH, finishFlush: zlib.Z_SYNC_FLUSH }; // for gzip if (codings == 'gzip' || codings == 'x-gzip') { body = body.pipe(zlib.createGunzip(zlibOptions)); response = new Response(body, response_options); resolve(response); return; } // for deflate if (codings == 'deflate' || codings == 'x-deflate') { // handle the infamous raw deflate response from old servers // a hack for old IIS and Apache servers const raw = res.pipe(new PassThrough$1()); raw.once('data', function (chunk) { // see http://stackoverflow.com/questions/37519828 if ((chunk[0] & 0x0F) === 0x08) { body = body.pipe(zlib.createInflate()); } else { body = body.pipe(zlib.createInflateRaw()); } response = new Response(body, response_options); resolve(response); }); return; } // for br if (codings == 'br' && typeof zlib.createBrotliDecompress === 'function') { body = body.pipe(zlib.createBrotliDecompress()); response = new Response(body, response_options); resolve(response); return; } // otherwise, use response as-is response = new Response(body, response_options); resolve(response); }); writeToStream(req, request); }); } /** * Redirect code matching * * @param Number code Status code * @return Boolean */ fetch.isRedirect = function (code) { return code === 301 || code === 302 || code === 303 || code === 307 || code === 308; }; // expose Promise fetch.Promise = global.Promise; export default fetch; export { Headers, Request, Response, FetchError };