source: trip-planner-front/node_modules/zone.js/fesm2015/zone-patch-fetch.js@ fa375fe

Last change on this file since fa375fe was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

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1'use strict';
2/**
3 * @license Angular v12.0.0-next.0
4 * (c) 2010-2020 Google LLC. https://angular.io/
5 * License: MIT
6 */
7/**
8 * @license
9 * Copyright Google LLC All Rights Reserved.
10 *
11 * Use of this source code is governed by an MIT-style license that can be
12 * found in the LICENSE file at https://angular.io/license
13 */
14/**
15 * @fileoverview
16 * @suppress {missingRequire}
17 */
18Zone.__load_patch('fetch', (global, Zone, api) => {
19 let fetch = global['fetch'];
20 if (typeof fetch !== 'function') {
21 return;
22 }
23 const originalFetch = global[api.symbol('fetch')];
24 if (originalFetch) {
25 // restore unpatched fetch first
26 fetch = originalFetch;
27 }
28 const ZoneAwarePromise = global.Promise;
29 const symbolThenPatched = api.symbol('thenPatched');
30 const fetchTaskScheduling = api.symbol('fetchTaskScheduling');
31 const fetchTaskAborting = api.symbol('fetchTaskAborting');
32 const OriginalAbortController = global['AbortController'];
33 const supportAbort = typeof OriginalAbortController === 'function';
34 let abortNative = null;
35 if (supportAbort) {
36 global['AbortController'] = function () {
37 const abortController = new OriginalAbortController();
38 const signal = abortController.signal;
39 signal.abortController = abortController;
40 return abortController;
41 };
42 abortNative = api.patchMethod(OriginalAbortController.prototype, 'abort', (delegate) => (self, args) => {
43 if (self.task) {
44 return self.task.zone.cancelTask(self.task);
45 }
46 return delegate.apply(self, args);
47 });
48 }
49 const placeholder = function () { };
50 global['fetch'] = function () {
51 const args = Array.prototype.slice.call(arguments);
52 const options = args.length > 1 ? args[1] : null;
53 const signal = options && options.signal;
54 return new Promise((res, rej) => {
55 const task = Zone.current.scheduleMacroTask('fetch', placeholder, { fetchArgs: args }, () => {
56 let fetchPromise;
57 let zone = Zone.current;
58 try {
59 zone[fetchTaskScheduling] = true;
60 fetchPromise = fetch.apply(this, args);
61 }
62 catch (error) {
63 rej(error);
64 return;
65 }
66 finally {
67 zone[fetchTaskScheduling] = false;
68 }
69 if (!(fetchPromise instanceof ZoneAwarePromise)) {
70 let ctor = fetchPromise.constructor;
71 if (!ctor[symbolThenPatched]) {
72 api.patchThen(ctor);
73 }
74 }
75 fetchPromise.then((resource) => {
76 if (task.state !== 'notScheduled') {
77 task.invoke();
78 }
79 res(resource);
80 }, (error) => {
81 if (task.state !== 'notScheduled') {
82 task.invoke();
83 }
84 rej(error);
85 });
86 }, () => {
87 if (!supportAbort) {
88 rej('No AbortController supported, can not cancel fetch');
89 return;
90 }
91 if (signal && signal.abortController && !signal.aborted &&
92 typeof signal.abortController.abort === 'function' && abortNative) {
93 try {
94 Zone.current[fetchTaskAborting] = true;
95 abortNative.call(signal.abortController);
96 }
97 finally {
98 Zone.current[fetchTaskAborting] = false;
99 }
100 }
101 else {
102 rej('cancel fetch need a AbortController.signal');
103 }
104 });
105 if (signal && signal.abortController) {
106 signal.abortController.task = task;
107 }
108 });
109 };
110});
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