Icard/angular-clarity-master(work.../node_modules/zone.js/bundles/zone-patch-promise-test.umd.js

71 lines
2.7 KiB
JavaScript

'use strict';
/**
* @license Angular v<unknown>
* (c) 2010-2022 Google LLC. https://angular.io/
* License: MIT
*/
(function (factory) {
typeof define === 'function' && define.amd ? define(factory) :
factory();
})((function () {
'use strict';
/**
* Promise for async/fakeAsync zoneSpec test
* can support async operation which not supported by zone.js
* such as
* it ('test jsonp in AsyncZone', async() => {
* new Promise(res => {
* jsonp(url, (data) => {
* // success callback
* res(data);
* });
* }).then((jsonpResult) => {
* // get jsonp result.
*
* // user will expect AsyncZoneSpec wait for
* // then, but because jsonp is not zone aware
* // AsyncZone will finish before then is called.
* });
* });
*/
Zone.__load_patch('promisefortest', function (global, Zone, api) {
var symbolState = api.symbol('state');
var UNRESOLVED = null;
var symbolParentUnresolved = api.symbol('parentUnresolved');
// patch Promise.prototype.then to keep an internal
// number for tracking unresolved chained promise
// we will decrease this number when the parent promise
// being resolved/rejected and chained promise was
// scheduled as a microTask.
// so we can know such kind of chained promise still
// not resolved in AsyncTestZone
Promise[api.symbol('patchPromiseForTest')] = function patchPromiseForTest() {
var oriThen = Promise[Zone.__symbol__('ZonePromiseThen')];
if (oriThen) {
return;
}
oriThen = Promise[Zone.__symbol__('ZonePromiseThen')] = Promise.prototype.then;
Promise.prototype.then = function () {
var chained = oriThen.apply(this, arguments);
if (this[symbolState] === UNRESOLVED) {
// parent promise is unresolved.
var asyncTestZoneSpec = Zone.current.get('AsyncTestZoneSpec');
if (asyncTestZoneSpec) {
asyncTestZoneSpec.unresolvedChainedPromiseCount++;
chained[symbolParentUnresolved] = true;
}
}
return chained;
};
};
Promise[api.symbol('unPatchPromiseForTest')] = function unpatchPromiseForTest() {
// restore origin then
var oriThen = Promise[Zone.__symbol__('ZonePromiseThen')];
if (oriThen) {
Promise.prototype.then = oriThen;
Promise[Zone.__symbol__('ZonePromiseThen')] = undefined;
}
};
});
}));