client.js 83 KB

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  1. "use strict";
  2. function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
  3. /**
  4. * Root reference for iframes.
  5. */
  6. var root;
  7. if (typeof window !== 'undefined') {
  8. // Browser window
  9. root = window;
  10. } else if (typeof self === 'undefined') {
  11. // Other environments
  12. console.warn('Using browser-only version of superagent in non-browser environment');
  13. root = void 0;
  14. } else {
  15. // Web Worker
  16. root = self;
  17. }
  18. var Emitter = require('component-emitter');
  19. var safeStringify = require('fast-safe-stringify');
  20. var RequestBase = require('./request-base');
  21. var isObject = require('./is-object');
  22. var ResponseBase = require('./response-base');
  23. var Agent = require('./agent-base');
  24. /**
  25. * Noop.
  26. */
  27. function noop() {}
  28. /**
  29. * Expose `request`.
  30. */
  31. module.exports = function (method, url) {
  32. // callback
  33. if (typeof url === 'function') {
  34. return new exports.Request('GET', method).end(url);
  35. } // url first
  36. if (arguments.length === 1) {
  37. return new exports.Request('GET', method);
  38. }
  39. return new exports.Request(method, url);
  40. };
  41. exports = module.exports;
  42. var request = exports;
  43. exports.Request = Request;
  44. /**
  45. * Determine XHR.
  46. */
  47. request.getXHR = function () {
  48. if (root.XMLHttpRequest && (!root.location || root.location.protocol !== 'file:' || !root.ActiveXObject)) {
  49. return new XMLHttpRequest();
  50. }
  51. try {
  52. return new ActiveXObject('Microsoft.XMLHTTP');
  53. } catch (_unused) {}
  54. try {
  55. return new ActiveXObject('Msxml2.XMLHTTP.6.0');
  56. } catch (_unused2) {}
  57. try {
  58. return new ActiveXObject('Msxml2.XMLHTTP.3.0');
  59. } catch (_unused3) {}
  60. try {
  61. return new ActiveXObject('Msxml2.XMLHTTP');
  62. } catch (_unused4) {}
  63. throw new Error('Browser-only version of superagent could not find XHR');
  64. };
  65. /**
  66. * Removes leading and trailing whitespace, added to support IE.
  67. *
  68. * @param {String} s
  69. * @return {String}
  70. * @api private
  71. */
  72. var trim = ''.trim ? function (s) {
  73. return s.trim();
  74. } : function (s) {
  75. return s.replace(/(^\s*|\s*$)/g, '');
  76. };
  77. /**
  78. * Serialize the given `obj`.
  79. *
  80. * @param {Object} obj
  81. * @return {String}
  82. * @api private
  83. */
  84. function serialize(obj) {
  85. if (!isObject(obj)) return obj;
  86. var pairs = [];
  87. for (var key in obj) {
  88. if (Object.prototype.hasOwnProperty.call(obj, key)) pushEncodedKeyValuePair(pairs, key, obj[key]);
  89. }
  90. return pairs.join('&');
  91. }
  92. /**
  93. * Helps 'serialize' with serializing arrays.
  94. * Mutates the pairs array.
  95. *
  96. * @param {Array} pairs
  97. * @param {String} key
  98. * @param {Mixed} val
  99. */
  100. function pushEncodedKeyValuePair(pairs, key, val) {
  101. if (val === undefined) return;
  102. if (val === null) {
  103. pairs.push(encodeURI(key));
  104. return;
  105. }
  106. if (Array.isArray(val)) {
  107. val.forEach(function (v) {
  108. pushEncodedKeyValuePair(pairs, key, v);
  109. });
  110. } else if (isObject(val)) {
  111. for (var subkey in val) {
  112. if (Object.prototype.hasOwnProperty.call(val, subkey)) pushEncodedKeyValuePair(pairs, "".concat(key, "[").concat(subkey, "]"), val[subkey]);
  113. }
  114. } else {
  115. pairs.push(encodeURI(key) + '=' + encodeURIComponent(val));
  116. }
  117. }
  118. /**
  119. * Expose serialization method.
  120. */
  121. request.serializeObject = serialize;
  122. /**
  123. * Parse the given x-www-form-urlencoded `str`.
  124. *
  125. * @param {String} str
  126. * @return {Object}
  127. * @api private
  128. */
  129. function parseString(str) {
  130. var obj = {};
  131. var pairs = str.split('&');
  132. var pair;
  133. var pos;
  134. for (var i = 0, len = pairs.length; i < len; ++i) {
  135. pair = pairs[i];
  136. pos = pair.indexOf('=');
  137. if (pos === -1) {
  138. obj[decodeURIComponent(pair)] = '';
  139. } else {
  140. obj[decodeURIComponent(pair.slice(0, pos))] = decodeURIComponent(pair.slice(pos + 1));
  141. }
  142. }
  143. return obj;
  144. }
  145. /**
  146. * Expose parser.
  147. */
  148. request.parseString = parseString;
  149. /**
  150. * Default MIME type map.
  151. *
  152. * superagent.types.xml = 'application/xml';
  153. *
  154. */
  155. request.types = {
  156. html: 'text/html',
  157. json: 'application/json',
  158. xml: 'text/xml',
  159. urlencoded: 'application/x-www-form-urlencoded',
  160. form: 'application/x-www-form-urlencoded',
  161. 'form-data': 'application/x-www-form-urlencoded'
  162. };
  163. /**
  164. * Default serialization map.
  165. *
  166. * superagent.serialize['application/xml'] = function(obj){
  167. * return 'generated xml here';
  168. * };
  169. *
  170. */
  171. request.serialize = {
  172. 'application/x-www-form-urlencoded': serialize,
  173. 'application/json': safeStringify
  174. };
  175. /**
  176. * Default parsers.
  177. *
  178. * superagent.parse['application/xml'] = function(str){
  179. * return { object parsed from str };
  180. * };
  181. *
  182. */
  183. request.parse = {
  184. 'application/x-www-form-urlencoded': parseString,
  185. 'application/json': JSON.parse
  186. };
  187. /**
  188. * Parse the given header `str` into
  189. * an object containing the mapped fields.
  190. *
  191. * @param {String} str
  192. * @return {Object}
  193. * @api private
  194. */
  195. function parseHeader(str) {
  196. var lines = str.split(/\r?\n/);
  197. var fields = {};
  198. var index;
  199. var line;
  200. var field;
  201. var val;
  202. for (var i = 0, len = lines.length; i < len; ++i) {
  203. line = lines[i];
  204. index = line.indexOf(':');
  205. if (index === -1) {
  206. // could be empty line, just skip it
  207. continue;
  208. }
  209. field = line.slice(0, index).toLowerCase();
  210. val = trim(line.slice(index + 1));
  211. fields[field] = val;
  212. }
  213. return fields;
  214. }
  215. /**
  216. * Check if `mime` is json or has +json structured syntax suffix.
  217. *
  218. * @param {String} mime
  219. * @return {Boolean}
  220. * @api private
  221. */
  222. function isJSON(mime) {
  223. // should match /json or +json
  224. // but not /json-seq
  225. return /[/+]json($|[^-\w])/.test(mime);
  226. }
  227. /**
  228. * Initialize a new `Response` with the given `xhr`.
  229. *
  230. * - set flags (.ok, .error, etc)
  231. * - parse header
  232. *
  233. * Examples:
  234. *
  235. * Aliasing `superagent` as `request` is nice:
  236. *
  237. * request = superagent;
  238. *
  239. * We can use the promise-like API, or pass callbacks:
  240. *
  241. * request.get('/').end(function(res){});
  242. * request.get('/', function(res){});
  243. *
  244. * Sending data can be chained:
  245. *
  246. * request
  247. * .post('/user')
  248. * .send({ name: 'tj' })
  249. * .end(function(res){});
  250. *
  251. * Or passed to `.send()`:
  252. *
  253. * request
  254. * .post('/user')
  255. * .send({ name: 'tj' }, function(res){});
  256. *
  257. * Or passed to `.post()`:
  258. *
  259. * request
  260. * .post('/user', { name: 'tj' })
  261. * .end(function(res){});
  262. *
  263. * Or further reduced to a single call for simple cases:
  264. *
  265. * request
  266. * .post('/user', { name: 'tj' }, function(res){});
  267. *
  268. * @param {XMLHTTPRequest} xhr
  269. * @param {Object} options
  270. * @api private
  271. */
  272. function Response(req) {
  273. this.req = req;
  274. this.xhr = this.req.xhr; // responseText is accessible only if responseType is '' or 'text' and on older browsers
  275. this.text = this.req.method !== 'HEAD' && (this.xhr.responseType === '' || this.xhr.responseType === 'text') || typeof this.xhr.responseType === 'undefined' ? this.xhr.responseText : null;
  276. this.statusText = this.req.xhr.statusText;
  277. var status = this.xhr.status; // handle IE9 bug: http://stackoverflow.com/questions/10046972/msie-returns-status-code-of-1223-for-ajax-request
  278. if (status === 1223) {
  279. status = 204;
  280. }
  281. this._setStatusProperties(status);
  282. this.headers = parseHeader(this.xhr.getAllResponseHeaders());
  283. this.header = this.headers; // getAllResponseHeaders sometimes falsely returns "" for CORS requests, but
  284. // getResponseHeader still works. so we get content-type even if getting
  285. // other headers fails.
  286. this.header['content-type'] = this.xhr.getResponseHeader('content-type');
  287. this._setHeaderProperties(this.header);
  288. if (this.text === null && req._responseType) {
  289. this.body = this.xhr.response;
  290. } else {
  291. this.body = this.req.method === 'HEAD' ? null : this._parseBody(this.text ? this.text : this.xhr.response);
  292. }
  293. } // eslint-disable-next-line new-cap
  294. ResponseBase(Response.prototype);
  295. /**
  296. * Parse the given body `str`.
  297. *
  298. * Used for auto-parsing of bodies. Parsers
  299. * are defined on the `superagent.parse` object.
  300. *
  301. * @param {String} str
  302. * @return {Mixed}
  303. * @api private
  304. */
  305. Response.prototype._parseBody = function (str) {
  306. var parse = request.parse[this.type];
  307. if (this.req._parser) {
  308. return this.req._parser(this, str);
  309. }
  310. if (!parse && isJSON(this.type)) {
  311. parse = request.parse['application/json'];
  312. }
  313. return parse && str && (str.length > 0 || str instanceof Object) ? parse(str) : null;
  314. };
  315. /**
  316. * Return an `Error` representative of this response.
  317. *
  318. * @return {Error}
  319. * @api public
  320. */
  321. Response.prototype.toError = function () {
  322. var req = this.req;
  323. var method = req.method;
  324. var url = req.url;
  325. var msg = "cannot ".concat(method, " ").concat(url, " (").concat(this.status, ")");
  326. var err = new Error(msg);
  327. err.status = this.status;
  328. err.method = method;
  329. err.url = url;
  330. return err;
  331. };
  332. /**
  333. * Expose `Response`.
  334. */
  335. request.Response = Response;
  336. /**
  337. * Initialize a new `Request` with the given `method` and `url`.
  338. *
  339. * @param {String} method
  340. * @param {String} url
  341. * @api public
  342. */
  343. function Request(method, url) {
  344. var self = this;
  345. this._query = this._query || [];
  346. this.method = method;
  347. this.url = url;
  348. this.header = {}; // preserves header name case
  349. this._header = {}; // coerces header names to lowercase
  350. this.on('end', function () {
  351. var err = null;
  352. var res = null;
  353. try {
  354. res = new Response(self);
  355. } catch (err_) {
  356. err = new Error('Parser is unable to parse the response');
  357. err.parse = true;
  358. err.original = err_; // issue #675: return the raw response if the response parsing fails
  359. if (self.xhr) {
  360. // ie9 doesn't have 'response' property
  361. err.rawResponse = typeof self.xhr.responseType === 'undefined' ? self.xhr.responseText : self.xhr.response; // issue #876: return the http status code if the response parsing fails
  362. err.status = self.xhr.status ? self.xhr.status : null;
  363. err.statusCode = err.status; // backwards-compat only
  364. } else {
  365. err.rawResponse = null;
  366. err.status = null;
  367. }
  368. return self.callback(err);
  369. }
  370. self.emit('response', res);
  371. var new_err;
  372. try {
  373. if (!self._isResponseOK(res)) {
  374. new_err = new Error(res.statusText || res.text || 'Unsuccessful HTTP response');
  375. }
  376. } catch (err_) {
  377. new_err = err_; // ok() callback can throw
  378. } // #1000 don't catch errors from the callback to avoid double calling it
  379. if (new_err) {
  380. new_err.original = err;
  381. new_err.response = res;
  382. new_err.status = res.status;
  383. self.callback(new_err, res);
  384. } else {
  385. self.callback(null, res);
  386. }
  387. });
  388. }
  389. /**
  390. * Mixin `Emitter` and `RequestBase`.
  391. */
  392. // eslint-disable-next-line new-cap
  393. Emitter(Request.prototype); // eslint-disable-next-line new-cap
  394. RequestBase(Request.prototype);
  395. /**
  396. * Set Content-Type to `type`, mapping values from `request.types`.
  397. *
  398. * Examples:
  399. *
  400. * superagent.types.xml = 'application/xml';
  401. *
  402. * request.post('/')
  403. * .type('xml')
  404. * .send(xmlstring)
  405. * .end(callback);
  406. *
  407. * request.post('/')
  408. * .type('application/xml')
  409. * .send(xmlstring)
  410. * .end(callback);
  411. *
  412. * @param {String} type
  413. * @return {Request} for chaining
  414. * @api public
  415. */
  416. Request.prototype.type = function (type) {
  417. this.set('Content-Type', request.types[type] || type);
  418. return this;
  419. };
  420. /**
  421. * Set Accept to `type`, mapping values from `request.types`.
  422. *
  423. * Examples:
  424. *
  425. * superagent.types.json = 'application/json';
  426. *
  427. * request.get('/agent')
  428. * .accept('json')
  429. * .end(callback);
  430. *
  431. * request.get('/agent')
  432. * .accept('application/json')
  433. * .end(callback);
  434. *
  435. * @param {String} accept
  436. * @return {Request} for chaining
  437. * @api public
  438. */
  439. Request.prototype.accept = function (type) {
  440. this.set('Accept', request.types[type] || type);
  441. return this;
  442. };
  443. /**
  444. * Set Authorization field value with `user` and `pass`.
  445. *
  446. * @param {String} user
  447. * @param {String} [pass] optional in case of using 'bearer' as type
  448. * @param {Object} options with 'type' property 'auto', 'basic' or 'bearer' (default 'basic')
  449. * @return {Request} for chaining
  450. * @api public
  451. */
  452. Request.prototype.auth = function (user, pass, options) {
  453. if (arguments.length === 1) pass = '';
  454. if (_typeof(pass) === 'object' && pass !== null) {
  455. // pass is optional and can be replaced with options
  456. options = pass;
  457. pass = '';
  458. }
  459. if (!options) {
  460. options = {
  461. type: typeof btoa === 'function' ? 'basic' : 'auto'
  462. };
  463. }
  464. var encoder = function encoder(string) {
  465. if (typeof btoa === 'function') {
  466. return btoa(string);
  467. }
  468. throw new Error('Cannot use basic auth, btoa is not a function');
  469. };
  470. return this._auth(user, pass, options, encoder);
  471. };
  472. /**
  473. * Add query-string `val`.
  474. *
  475. * Examples:
  476. *
  477. * request.get('/shoes')
  478. * .query('size=10')
  479. * .query({ color: 'blue' })
  480. *
  481. * @param {Object|String} val
  482. * @return {Request} for chaining
  483. * @api public
  484. */
  485. Request.prototype.query = function (val) {
  486. if (typeof val !== 'string') val = serialize(val);
  487. if (val) this._query.push(val);
  488. return this;
  489. };
  490. /**
  491. * Queue the given `file` as an attachment to the specified `field`,
  492. * with optional `options` (or filename).
  493. *
  494. * ``` js
  495. * request.post('/upload')
  496. * .attach('content', new Blob(['<a id="a"><b id="b">hey!</b></a>'], { type: "text/html"}))
  497. * .end(callback);
  498. * ```
  499. *
  500. * @param {String} field
  501. * @param {Blob|File} file
  502. * @param {String|Object} options
  503. * @return {Request} for chaining
  504. * @api public
  505. */
  506. Request.prototype.attach = function (field, file, options) {
  507. if (file) {
  508. if (this._data) {
  509. throw new Error("superagent can't mix .send() and .attach()");
  510. }
  511. this._getFormData().append(field, file, options || file.name);
  512. }
  513. return this;
  514. };
  515. Request.prototype._getFormData = function () {
  516. if (!this._formData) {
  517. this._formData = new root.FormData();
  518. }
  519. return this._formData;
  520. };
  521. /**
  522. * Invoke the callback with `err` and `res`
  523. * and handle arity check.
  524. *
  525. * @param {Error} err
  526. * @param {Response} res
  527. * @api private
  528. */
  529. Request.prototype.callback = function (err, res) {
  530. if (this._shouldRetry(err, res)) {
  531. return this._retry();
  532. }
  533. var fn = this._callback;
  534. this.clearTimeout();
  535. if (err) {
  536. if (this._maxRetries) err.retries = this._retries - 1;
  537. this.emit('error', err);
  538. }
  539. fn(err, res);
  540. };
  541. /**
  542. * Invoke callback with x-domain error.
  543. *
  544. * @api private
  545. */
  546. Request.prototype.crossDomainError = function () {
  547. var err = new Error('Request has been terminated\nPossible causes: the network is offline, Origin is not allowed by Access-Control-Allow-Origin, the page is being unloaded, etc.');
  548. err.crossDomain = true;
  549. err.status = this.status;
  550. err.method = this.method;
  551. err.url = this.url;
  552. this.callback(err);
  553. }; // This only warns, because the request is still likely to work
  554. Request.prototype.agent = function () {
  555. console.warn('This is not supported in browser version of superagent');
  556. return this;
  557. };
  558. Request.prototype.ca = Request.prototype.agent;
  559. Request.prototype.buffer = Request.prototype.ca; // This throws, because it can't send/receive data as expected
  560. Request.prototype.write = function () {
  561. throw new Error('Streaming is not supported in browser version of superagent');
  562. };
  563. Request.prototype.pipe = Request.prototype.write;
  564. /**
  565. * Check if `obj` is a host object,
  566. * we don't want to serialize these :)
  567. *
  568. * @param {Object} obj host object
  569. * @return {Boolean} is a host object
  570. * @api private
  571. */
  572. Request.prototype._isHost = function (obj) {
  573. // Native objects stringify to [object File], [object Blob], [object FormData], etc.
  574. return obj && _typeof(obj) === 'object' && !Array.isArray(obj) && Object.prototype.toString.call(obj) !== '[object Object]';
  575. };
  576. /**
  577. * Initiate request, invoking callback `fn(res)`
  578. * with an instanceof `Response`.
  579. *
  580. * @param {Function} fn
  581. * @return {Request} for chaining
  582. * @api public
  583. */
  584. Request.prototype.end = function (fn) {
  585. if (this._endCalled) {
  586. console.warn('Warning: .end() was called twice. This is not supported in superagent');
  587. }
  588. this._endCalled = true; // store callback
  589. this._callback = fn || noop; // querystring
  590. this._finalizeQueryString();
  591. this._end();
  592. };
  593. Request.prototype._setUploadTimeout = function () {
  594. var self = this; // upload timeout it's wokrs only if deadline timeout is off
  595. if (this._uploadTimeout && !this._uploadTimeoutTimer) {
  596. this._uploadTimeoutTimer = setTimeout(function () {
  597. self._timeoutError('Upload timeout of ', self._uploadTimeout, 'ETIMEDOUT');
  598. }, this._uploadTimeout);
  599. }
  600. }; // eslint-disable-next-line complexity
  601. Request.prototype._end = function () {
  602. if (this._aborted) return this.callback(new Error('The request has been aborted even before .end() was called'));
  603. var self = this;
  604. this.xhr = request.getXHR();
  605. var xhr = this.xhr;
  606. var data = this._formData || this._data;
  607. this._setTimeouts(); // state change
  608. xhr.onreadystatechange = function () {
  609. var readyState = xhr.readyState;
  610. if (readyState >= 2 && self._responseTimeoutTimer) {
  611. clearTimeout(self._responseTimeoutTimer);
  612. }
  613. if (readyState !== 4) {
  614. return;
  615. } // In IE9, reads to any property (e.g. status) off of an aborted XHR will
  616. // result in the error "Could not complete the operation due to error c00c023f"
  617. var status;
  618. try {
  619. status = xhr.status;
  620. } catch (_unused5) {
  621. status = 0;
  622. }
  623. if (!status) {
  624. if (self.timedout || self._aborted) return;
  625. return self.crossDomainError();
  626. }
  627. self.emit('end');
  628. }; // progress
  629. var handleProgress = function handleProgress(direction, e) {
  630. if (e.total > 0) {
  631. e.percent = e.loaded / e.total * 100;
  632. if (e.percent === 100) {
  633. clearTimeout(self._uploadTimeoutTimer);
  634. }
  635. }
  636. e.direction = direction;
  637. self.emit('progress', e);
  638. };
  639. if (this.hasListeners('progress')) {
  640. try {
  641. xhr.addEventListener('progress', handleProgress.bind(null, 'download'));
  642. if (xhr.upload) {
  643. xhr.upload.addEventListener('progress', handleProgress.bind(null, 'upload'));
  644. }
  645. } catch (_unused6) {// Accessing xhr.upload fails in IE from a web worker, so just pretend it doesn't exist.
  646. // Reported here:
  647. // https://connect.microsoft.com/IE/feedback/details/837245/xmlhttprequest-upload-throws-invalid-argument-when-used-from-web-worker-context
  648. }
  649. }
  650. if (xhr.upload) {
  651. this._setUploadTimeout();
  652. } // initiate request
  653. try {
  654. if (this.username && this.password) {
  655. xhr.open(this.method, this.url, true, this.username, this.password);
  656. } else {
  657. xhr.open(this.method, this.url, true);
  658. }
  659. } catch (err) {
  660. // see #1149
  661. return this.callback(err);
  662. } // CORS
  663. if (this._withCredentials) xhr.withCredentials = true; // body
  664. if (!this._formData && this.method !== 'GET' && this.method !== 'HEAD' && typeof data !== 'string' && !this._isHost(data)) {
  665. // serialize stuff
  666. var contentType = this._header['content-type'];
  667. var _serialize = this._serializer || request.serialize[contentType ? contentType.split(';')[0] : ''];
  668. if (!_serialize && isJSON(contentType)) {
  669. _serialize = request.serialize['application/json'];
  670. }
  671. if (_serialize) data = _serialize(data);
  672. } // set header fields
  673. for (var field in this.header) {
  674. if (this.header[field] === null) continue;
  675. if (Object.prototype.hasOwnProperty.call(this.header, field)) xhr.setRequestHeader(field, this.header[field]);
  676. }
  677. if (this._responseType) {
  678. xhr.responseType = this._responseType;
  679. } // send stuff
  680. this.emit('request', this); // IE11 xhr.send(undefined) sends 'undefined' string as POST payload (instead of nothing)
  681. // We need null here if data is undefined
  682. xhr.send(typeof data === 'undefined' ? null : data);
  683. };
  684. request.agent = function () {
  685. return new Agent();
  686. };
  687. ['GET', 'POST', 'OPTIONS', 'PATCH', 'PUT', 'DELETE'].forEach(function (method) {
  688. Agent.prototype[method.toLowerCase()] = function (url, fn) {
  689. var req = new request.Request(method, url);
  690. this._setDefaults(req);
  691. if (fn) {
  692. req.end(fn);
  693. }
  694. return req;
  695. };
  696. });
  697. Agent.prototype.del = Agent.prototype.delete;
  698. /**
  699. * GET `url` with optional callback `fn(res)`.
  700. *
  701. * @param {String} url
  702. * @param {Mixed|Function} [data] or fn
  703. * @param {Function} [fn]
  704. * @return {Request}
  705. * @api public
  706. */
  707. request.get = function (url, data, fn) {
  708. var req = request('GET', url);
  709. if (typeof data === 'function') {
  710. fn = data;
  711. data = null;
  712. }
  713. if (data) req.query(data);
  714. if (fn) req.end(fn);
  715. return req;
  716. };
  717. /**
  718. * HEAD `url` with optional callback `fn(res)`.
  719. *
  720. * @param {String} url
  721. * @param {Mixed|Function} [data] or fn
  722. * @param {Function} [fn]
  723. * @return {Request}
  724. * @api public
  725. */
  726. request.head = function (url, data, fn) {
  727. var req = request('HEAD', url);
  728. if (typeof data === 'function') {
  729. fn = data;
  730. data = null;
  731. }
  732. if (data) req.query(data);
  733. if (fn) req.end(fn);
  734. return req;
  735. };
  736. /**
  737. * OPTIONS query to `url` with optional callback `fn(res)`.
  738. *
  739. * @param {String} url
  740. * @param {Mixed|Function} [data] or fn
  741. * @param {Function} [fn]
  742. * @return {Request}
  743. * @api public
  744. */
  745. request.options = function (url, data, fn) {
  746. var req = request('OPTIONS', url);
  747. if (typeof data === 'function') {
  748. fn = data;
  749. data = null;
  750. }
  751. if (data) req.send(data);
  752. if (fn) req.end(fn);
  753. return req;
  754. };
  755. /**
  756. * DELETE `url` with optional `data` and callback `fn(res)`.
  757. *
  758. * @param {String} url
  759. * @param {Mixed} [data]
  760. * @param {Function} [fn]
  761. * @return {Request}
  762. * @api public
  763. */
  764. function del(url, data, fn) {
  765. var req = request('DELETE', url);
  766. if (typeof data === 'function') {
  767. fn = data;
  768. data = null;
  769. }
  770. if (data) req.send(data);
  771. if (fn) req.end(fn);
  772. return req;
  773. }
  774. request.del = del;
  775. request.delete = del;
  776. /**
  777. * PATCH `url` with optional `data` and callback `fn(res)`.
  778. *
  779. * @param {String} url
  780. * @param {Mixed} [data]
  781. * @param {Function} [fn]
  782. * @return {Request}
  783. * @api public
  784. */
  785. request.patch = function (url, data, fn) {
  786. var req = request('PATCH', url);
  787. if (typeof data === 'function') {
  788. fn = data;
  789. data = null;
  790. }
  791. if (data) req.send(data);
  792. if (fn) req.end(fn);
  793. return req;
  794. };
  795. /**
  796. * POST `url` with optional `data` and callback `fn(res)`.
  797. *
  798. * @param {String} url
  799. * @param {Mixed} [data]
  800. * @param {Function} [fn]
  801. * @return {Request}
  802. * @api public
  803. */
  804. request.post = function (url, data, fn) {
  805. var req = request('POST', url);
  806. if (typeof data === 'function') {
  807. fn = data;
  808. data = null;
  809. }
  810. if (data) req.send(data);
  811. if (fn) req.end(fn);
  812. return req;
  813. };
  814. /**
  815. * PUT `url` with optional `data` and callback `fn(res)`.
  816. *
  817. * @param {String} url
  818. * @param {Mixed|Function} [data] or fn
  819. * @param {Function} [fn]
  820. * @return {Request}
  821. * @api public
  822. */
  823. request.put = function (url, data, fn) {
  824. var req = request('PUT', url);
  825. if (typeof data === 'function') {
  826. fn = data;
  827. data = null;
  828. }
  829. if (data) req.send(data);
  830. if (fn) req.end(fn);
  831. return req;
  832. };
  833. //# 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'undefined'\n      ? this.xhr.responseText\n      : null;\n  this.statusText = this.req.xhr.statusText;\n  let { status } = this.xhr;\n  // handle IE9 bug: http://stackoverflow.com/questions/10046972/msie-returns-status-code-of-1223-for-ajax-request\n  if (status === 1223) {\n    status = 204;\n  }\n\n  this._setStatusProperties(status);\n  this.headers = parseHeader(this.xhr.getAllResponseHeaders());\n  this.header = this.headers;\n  // getAllResponseHeaders sometimes falsely returns \"\" for CORS requests, but\n  // getResponseHeader still works. so we get content-type even if getting\n  // other headers fails.\n  this.header['content-type'] = this.xhr.getResponseHeader('content-type');\n  this._setHeaderProperties(this.header);\n\n  if (this.text === null && req._responseType) {\n    this.body = this.xhr.response;\n  } else {\n    this.body =\n      this.req.method === 'HEAD'\n        ? null\n        : this._parseBody(this.text ? this.text : this.xhr.response);\n  }\n}\n\n// eslint-disable-next-line new-cap\nResponseBase(Response.prototype);\n\n/**\n * Parse the given body `str`.\n *\n * Used for auto-parsing of bodies. Parsers\n * are defined on the `superagent.parse` object.\n *\n * @param {String} str\n * @return {Mixed}\n * @api private\n */\n\nResponse.prototype._parseBody = function(str) {\n  let parse = request.parse[this.type];\n  if (this.req._parser) {\n    return this.req._parser(this, str);\n  }\n\n  if (!parse && isJSON(this.type)) {\n    parse = request.parse['application/json'];\n  }\n\n  return parse && str && (str.length > 0 || str instanceof Object)\n    ? parse(str)\n    : null;\n};\n\n/**\n * Return an `Error` representative of this response.\n *\n * @return {Error}\n * @api public\n */\n\nResponse.prototype.toError = function() {\n  const { req } = this;\n  const { method } = req;\n  const { url } = req;\n\n  const msg = `cannot ${method} ${url} (${this.status})`;\n  const err = new Error(msg);\n  err.status = this.status;\n  err.method = method;\n  err.url = url;\n\n  return err;\n};\n\n/**\n * Expose `Response`.\n */\n\nrequest.Response = Response;\n\n/**\n * Initialize a new `Request` with the given `method` and `url`.\n *\n * @param {String} method\n * @param {String} url\n * @api public\n */\n\nfunction Request(method, url) {\n  const self = this;\n  this._query = this._query || [];\n  this.method = method;\n  this.url = url;\n  this.header = {}; // preserves header name case\n  this._header = {}; // coerces header names to lowercase\n  this.on('end', () => {\n    let err = null;\n    let res = null;\n\n    try {\n      res = new Response(self);\n    } catch (err_) {\n      err = new Error('Parser is unable to parse the response');\n      err.parse = true;\n      err.original = err_;\n      // issue #675: return the raw response if the response parsing fails\n      if (self.xhr) {\n        // ie9 doesn't have 'response' property\n        err.rawResponse =\n          typeof self.xhr.responseType === 'undefined'\n            ? self.xhr.responseText\n            : self.xhr.response;\n        // issue #876: return the http status code if the response parsing fails\n        err.status = self.xhr.status ? self.xhr.status : null;\n        err.statusCode = err.status; // backwards-compat only\n      } else {\n        err.rawResponse = null;\n        err.status = null;\n      }\n\n      return self.callback(err);\n    }\n\n    self.emit('response', res);\n\n    let new_err;\n    try {\n      if (!self._isResponseOK(res)) {\n        new_err = new Error(\n          res.statusText || res.text || 'Unsuccessful HTTP response'\n        );\n      }\n    } catch (err_) {\n      new_err = err_; // ok() callback can throw\n    }\n\n    // #1000 don't catch errors from the callback to avoid double calling it\n    if (new_err) {\n      new_err.original = err;\n      new_err.response = res;\n      new_err.status = res.status;\n      self.callback(new_err, res);\n    } else {\n      self.callback(null, res);\n    }\n  });\n}\n\n/**\n * Mixin `Emitter` and `RequestBase`.\n */\n\n// eslint-disable-next-line new-cap\nEmitter(Request.prototype);\n// eslint-disable-next-line new-cap\nRequestBase(Request.prototype);\n\n/**\n * Set Content-Type to `type`, mapping values from `request.types`.\n *\n * Examples:\n *\n *      superagent.types.xml = 'application/xml';\n *\n *      request.post('/')\n *        .type('xml')\n *        .send(xmlstring)\n *        .end(callback);\n *\n *      request.post('/')\n *        .type('application/xml')\n *        .send(xmlstring)\n *        .end(callback);\n *\n * @param {String} type\n * @return {Request} for chaining\n * @api public\n */\n\nRequest.prototype.type = function(type) {\n  this.set('Content-Type', request.types[type] || type);\n  return this;\n};\n\n/**\n * Set Accept to `type`, mapping values from `request.types`.\n *\n * Examples:\n *\n *      superagent.types.json = 'application/json';\n *\n *      request.get('/agent')\n *        .accept('json')\n *        .end(callback);\n *\n *      request.get('/agent')\n *        .accept('application/json')\n *        .end(callback);\n *\n * @param {String} accept\n * @return {Request} for chaining\n * @api public\n */\n\nRequest.prototype.accept = function(type) {\n  this.set('Accept', request.types[type] || type);\n  return this;\n};\n\n/**\n * Set Authorization field value with `user` and `pass`.\n *\n * @param {String} user\n * @param {String} [pass] optional in case of using 'bearer' as type\n * @param {Object} options with 'type' property 'auto', 'basic' or 'bearer' (default 'basic')\n * @return {Request} for chaining\n * @api public\n */\n\nRequest.prototype.auth = function(user, pass, options) {\n  if (arguments.length === 1) pass = '';\n  if (typeof pass === 'object' && pass !== null) {\n    // pass is optional and can be replaced with options\n    options = pass;\n    pass = '';\n  }\n\n  if (!options) {\n    options = {\n      type: typeof btoa === 'function' ? 'basic' : 'auto'\n    };\n  }\n\n  const encoder = string => {\n    if (typeof btoa === 'function') {\n      return btoa(string);\n    }\n\n    throw new Error('Cannot use basic auth, btoa is not a function');\n  };\n\n  return this._auth(user, pass, options, encoder);\n};\n\n/**\n * Add query-string `val`.\n *\n * Examples:\n *\n *   request.get('/shoes')\n *     .query('size=10')\n *     .query({ color: 'blue' })\n *\n * @param {Object|String} val\n * @return {Request} for chaining\n * @api public\n */\n\nRequest.prototype.query = function(val) {\n  if (typeof val !== 'string') val = serialize(val);\n  if (val) this._query.push(val);\n  return this;\n};\n\n/**\n * Queue the given `file` as an attachment to the specified `field`,\n * with optional `options` (or filename).\n *\n * ``` js\n * request.post('/upload')\n *   .attach('content', new Blob(['<a id=\"a\"><b id=\"b\">hey!</b></a>'], { type: \"text/html\"}))\n *   .end(callback);\n * ```\n *\n * @param {String} field\n * @param {Blob|File} file\n * @param {String|Object} options\n * @return {Request} for chaining\n * @api public\n */\n\nRequest.prototype.attach = function(field, file, options) {\n  if (file) {\n    if (this._data) {\n      throw new Error(\"superagent can't mix .send() and .attach()\");\n    }\n\n    this._getFormData().append(field, file, options || file.name);\n  }\n\n  return this;\n};\n\nRequest.prototype._getFormData = function() {\n  if (!this._formData) {\n    this._formData = new root.FormData();\n  }\n\n  return this._formData;\n};\n\n/**\n * Invoke the callback with `err` and `res`\n * and handle arity check.\n *\n * @param {Error} err\n * @param {Response} res\n * @api private\n */\n\nRequest.prototype.callback = function(err, res) {\n  if (this._shouldRetry(err, res)) {\n    return this._retry();\n  }\n\n  const fn = this._callback;\n  this.clearTimeout();\n\n  if (err) {\n    if (this._maxRetries) err.retries = this._retries - 1;\n    this.emit('error', err);\n  }\n\n  fn(err, res);\n};\n\n/**\n * Invoke callback with x-domain error.\n *\n * @api private\n */\n\nRequest.prototype.crossDomainError = function() {\n  const err = new Error(\n    'Request has been terminated\\nPossible causes: the network is offline, Origin is not allowed by Access-Control-Allow-Origin, the page is being unloaded, etc.'\n  );\n  err.crossDomain = true;\n\n  err.status = this.status;\n  err.method = this.method;\n  err.url = this.url;\n\n  this.callback(err);\n};\n\n// This only warns, because the request is still likely to work\nRequest.prototype.agent = function() {\n  console.warn('This is not supported in browser version of superagent');\n  return this;\n};\n\nRequest.prototype.ca = Request.prototype.agent;\nRequest.prototype.buffer = Request.prototype.ca;\n\n// This throws, because it can't send/receive data as expected\nRequest.prototype.write = () => {\n  throw new Error(\n    'Streaming is not supported in browser version of superagent'\n  );\n};\n\nRequest.prototype.pipe = Request.prototype.write;\n\n/**\n * Check if `obj` is a host object,\n * we don't want to serialize these :)\n *\n * @param {Object} obj host object\n * @return {Boolean} is a host object\n * @api private\n */\nRequest.prototype._isHost = function(obj) {\n  // Native objects stringify to [object File], [object Blob], [object FormData], etc.\n  return (\n    obj &&\n    typeof obj === 'object' &&\n    !Array.isArray(obj) &&\n    Object.prototype.toString.call(obj) !== '[object Object]'\n  );\n};\n\n/**\n * Initiate request, invoking callback `fn(res)`\n * with an instanceof `Response`.\n *\n * @param {Function} fn\n * @return {Request} for chaining\n * @api public\n */\n\nRequest.prototype.end = function(fn) {\n  if (this._endCalled) {\n    console.warn(\n      'Warning: .end() was called twice. This is not supported in superagent'\n    );\n  }\n\n  this._endCalled = true;\n\n  // store callback\n  this._callback = fn || noop;\n\n  // querystring\n  this._finalizeQueryString();\n\n  this._end();\n};\n\nRequest.prototype._setUploadTimeout = function() {\n  const self = this;\n\n  // upload timeout it's wokrs only if deadline timeout is off\n  if (this._uploadTimeout && !this._uploadTimeoutTimer) {\n    this._uploadTimeoutTimer = setTimeout(() => {\n      self._timeoutError(\n        'Upload timeout of ',\n        self._uploadTimeout,\n        'ETIMEDOUT'\n      );\n    }, this._uploadTimeout);\n  }\n};\n\n// eslint-disable-next-line complexity\nRequest.prototype._end = function() {\n  if (this._aborted)\n    return this.callback(\n      new Error('The request has been aborted even before .end() was called')\n    );\n\n  const self = this;\n  this.xhr = request.getXHR();\n  const { xhr } = this;\n  let data = this._formData || this._data;\n\n  this._setTimeouts();\n\n  // state change\n  xhr.onreadystatechange = () => {\n    const { readyState } = xhr;\n    if (readyState >= 2 && self._responseTimeoutTimer) {\n      clearTimeout(self._responseTimeoutTimer);\n    }\n\n    if (readyState !== 4) {\n      return;\n    }\n\n    // In IE9, reads to any property (e.g. status) off of an aborted XHR will\n    // result in the error \"Could not complete the operation due to error c00c023f\"\n    let status;\n    try {\n      status = xhr.status;\n    } catch {\n      status = 0;\n    }\n\n    if (!status) {\n      if (self.timedout || self._aborted) return;\n      return self.crossDomainError();\n    }\n\n    self.emit('end');\n  };\n\n  // progress\n  const handleProgress = (direction, e) => {\n    if (e.total > 0) {\n      e.percent = (e.loaded / e.total) * 100;\n\n      if (e.percent === 100) {\n        clearTimeout(self._uploadTimeoutTimer);\n      }\n    }\n\n    e.direction = direction;\n    self.emit('progress', e);\n  };\n\n  if (this.hasListeners('progress')) {\n    try {\n      xhr.addEventListener('progress', handleProgress.bind(null, 'download'));\n      if (xhr.upload) {\n        xhr.upload.addEventListener(\n          'progress',\n          handleProgress.bind(null, 'upload')\n        );\n      }\n    } catch {\n      // Accessing xhr.upload fails in IE from a web worker, so just pretend it doesn't exist.\n      // Reported here:\n      // https://connect.microsoft.com/IE/feedback/details/837245/xmlhttprequest-upload-throws-invalid-argument-when-used-from-web-worker-context\n    }\n  }\n\n  if (xhr.upload) {\n    this._setUploadTimeout();\n  }\n\n  // initiate request\n  try {\n    if (this.username && this.password) {\n      xhr.open(this.method, this.url, true, this.username, this.password);\n    } else {\n      xhr.open(this.method, this.url, true);\n    }\n  } catch (err) {\n    // see #1149\n    return this.callback(err);\n  }\n\n  // CORS\n  if (this._withCredentials) xhr.withCredentials = true;\n\n  // body\n  if (\n    !this._formData &&\n    this.method !== 'GET' &&\n    this.method !== 'HEAD' &&\n    typeof data !== 'string' &&\n    !this._isHost(data)\n  ) {\n    // serialize stuff\n    const contentType = this._header['content-type'];\n    let serialize =\n      this._serializer ||\n      request.serialize[contentType ? contentType.split(';')[0] : ''];\n    if (!serialize && isJSON(contentType)) {\n      serialize = request.serialize['application/json'];\n    }\n\n    if (serialize) data = serialize(data);\n  }\n\n  // set header fields\n  for (const field in this.header) {\n    if (this.header[field] === null) continue;\n\n    if (Object.prototype.hasOwnProperty.call(this.header, field))\n      xhr.setRequestHeader(field, this.header[field]);\n  }\n\n  if (this._responseType) {\n    xhr.responseType = this._responseType;\n  }\n\n  // send stuff\n  this.emit('request', this);\n\n  // IE11 xhr.send(undefined) sends 'undefined' string as POST payload (instead of nothing)\n  // We need null here if data is undefined\n  xhr.send(typeof data === 'undefined' ? null : data);\n};\n\nrequest.agent = () => new Agent();\n\n['GET', 'POST', 'OPTIONS', 'PATCH', 'PUT', 'DELETE'].forEach(method => {\n  Agent.prototype[method.toLowerCase()] = function(url, fn) {\n    const req = new request.Request(method, url);\n    this._setDefaults(req);\n    if (fn) {\n      req.end(fn);\n    }\n\n    return req;\n  };\n});\n\nAgent.prototype.del = Agent.prototype.delete;\n\n/**\n * GET `url` with optional callback `fn(res)`.\n *\n * @param {String} url\n * @param {Mixed|Function} [data] or fn\n * @param {Function} [fn]\n * @return {Request}\n * @api public\n */\n\nrequest.get = (url, data, fn) => {\n  const req = request('GET', url);\n  if (typeof data === 'function') {\n    fn = data;\n    data = null;\n  }\n\n  if (data) req.query(data);\n  if (fn) req.end(fn);\n  return req;\n};\n\n/**\n * HEAD `url` with optional callback `fn(res)`.\n *\n * @param {String} url\n * @param {Mixed|Function} [data] or fn\n * @param {Function} [fn]\n * @return {Request}\n * @api public\n */\n\nrequest.head = (url, data, fn) => {\n  const req = request('HEAD', url);\n  if (typeof data === 'function') {\n    fn = data;\n    data = null;\n  }\n\n  if (data) req.query(data);\n  if (fn) req.end(fn);\n  return req;\n};\n\n/**\n * OPTIONS query to `url` with optional callback `fn(res)`.\n *\n * @param {String} url\n * @param {Mixed|Function} [data] or fn\n * @param {Function} [fn]\n * @return {Request}\n * @api public\n */\n\nrequest.options = (url, data, fn) => {\n  const req = request('OPTIONS', url);\n  if (typeof data === 'function') {\n    fn = data;\n    data = null;\n  }\n\n  if (data) req.send(data);\n  if (fn) req.end(fn);\n  return req;\n};\n\n/**\n * DELETE `url` with optional `data` and callback `fn(res)`.\n *\n * @param {String} url\n * @param {Mixed} [data]\n * @param {Function} [fn]\n * @return {Request}\n * @api public\n */\n\nfunction del(url, data, fn) {\n  const req = request('DELETE', url);\n  if (typeof data === 'function') {\n    fn = data;\n    data = null;\n  }\n\n  if (data) req.send(data);\n  if (fn) req.end(fn);\n  return req;\n}\n\nrequest.del = del;\nrequest.delete = del;\n\n/**\n * PATCH `url` with optional `data` and callback `fn(res)`.\n *\n * @param {String} url\n * @param {Mixed} [data]\n * @param {Function} [fn]\n * @return {Request}\n * @api public\n */\n\nrequest.patch = (url, data, fn) => {\n  const req = request('PATCH', url);\n  if (typeof data === 'function') {\n    fn = data;\n    data = null;\n  }\n\n  if (data) req.send(data);\n  if (fn) req.end(fn);\n  return req;\n};\n\n/**\n * POST `url` with optional `data` and callback `fn(res)`.\n *\n * @param {String} url\n * @param {Mixed} [data]\n * @param {Function} [fn]\n * @return {Request}\n * @api public\n */\n\nrequest.post = (url, data, fn) => {\n  const req = request('POST', url);\n  if (typeof data === 'function') {\n    fn = data;\n    data = null;\n  }\n\n  if (data) req.send(data);\n  if (fn) req.end(fn);\n  return req;\n};\n\n/**\n * PUT `url` with optional `data` and callback `fn(res)`.\n *\n * @param {String} url\n * @param {Mixed|Function} [data] or fn\n * @param {Function} [fn]\n * @return {Request}\n * @api public\n */\n\nrequest.put = (url, data, fn) => {\n  const req = request('PUT', url);\n  if (typeof data === 'function') {\n    fn = data;\n    data = null;\n  }\n\n  if (data) req.send(data);\n  if (fn) req.end(fn);\n  return req;\n};\n"]}