111 lines
4.4 KiB
JavaScript
111 lines
4.4 KiB
JavaScript
'use strict';
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/**
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* @license Angular v<unknown>
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* (c) 2010-2022 Google LLC. https://angular.io/
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* License: MIT
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*/
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(function (factory) {
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typeof define === 'function' && define.amd ? define(factory) :
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factory();
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})((function () {
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'use strict';
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/**
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* @fileoverview
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* @suppress {missingRequire}
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*/
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Zone.__load_patch('fetch', function (global, Zone, api) {
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var fetch = global['fetch'];
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if (typeof fetch !== 'function') {
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return;
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}
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var originalFetch = global[api.symbol('fetch')];
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if (originalFetch) {
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// restore unpatched fetch first
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fetch = originalFetch;
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}
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var ZoneAwarePromise = global.Promise;
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var symbolThenPatched = api.symbol('thenPatched');
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var fetchTaskScheduling = api.symbol('fetchTaskScheduling');
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var fetchTaskAborting = api.symbol('fetchTaskAborting');
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var OriginalAbortController = global['AbortController'];
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var supportAbort = typeof OriginalAbortController === 'function';
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var abortNative = null;
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if (supportAbort) {
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global['AbortController'] = function () {
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var abortController = new OriginalAbortController();
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var signal = abortController.signal;
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signal.abortController = abortController;
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return abortController;
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};
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abortNative = api.patchMethod(OriginalAbortController.prototype, 'abort', function (delegate) { return function (self, args) {
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if (self.task) {
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return self.task.zone.cancelTask(self.task);
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}
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return delegate.apply(self, args);
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}; });
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}
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var placeholder = function () { };
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global['fetch'] = function () {
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var _this = this;
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var args = Array.prototype.slice.call(arguments);
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var options = args.length > 1 ? args[1] : null;
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var signal = options && options.signal;
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return new Promise(function (res, rej) {
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var task = Zone.current.scheduleMacroTask('fetch', placeholder, { fetchArgs: args }, function () {
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var fetchPromise;
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var zone = Zone.current;
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try {
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zone[fetchTaskScheduling] = true;
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fetchPromise = fetch.apply(_this, args);
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}
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catch (error) {
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rej(error);
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return;
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}
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finally {
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zone[fetchTaskScheduling] = false;
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}
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if (!(fetchPromise instanceof ZoneAwarePromise)) {
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var ctor = fetchPromise.constructor;
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if (!ctor[symbolThenPatched]) {
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api.patchThen(ctor);
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}
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}
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fetchPromise.then(function (resource) {
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if (task.state !== 'notScheduled') {
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task.invoke();
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}
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res(resource);
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}, function (error) {
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if (task.state !== 'notScheduled') {
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task.invoke();
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}
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rej(error);
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});
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}, function () {
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if (!supportAbort) {
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rej('No AbortController supported, can not cancel fetch');
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return;
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}
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if (signal && signal.abortController && !signal.aborted &&
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typeof signal.abortController.abort === 'function' && abortNative) {
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try {
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Zone.current[fetchTaskAborting] = true;
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abortNative.call(signal.abortController);
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}
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finally {
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Zone.current[fetchTaskAborting] = false;
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}
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}
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else {
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rej('cancel fetch need a AbortController.signal');
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}
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});
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if (signal && signal.abortController) {
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signal.abortController.task = task;
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}
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});
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};
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});
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}));
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