60f58bf051
As part of FW-1265, the `zone.js` package is made compatible with the TypeScript `--strict` flag. Read more about the strict flag [here](https://www.typescriptlang.org/docs/handbook/compiler-options.html) PR Close #30993
69 lines
2.3 KiB
TypeScript
69 lines
2.3 KiB
TypeScript
/**
|
|
* @license
|
|
* Copyright Google Inc. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by an MIT-style license that can be
|
|
* found in the LICENSE file at https://angular.io/license
|
|
*/
|
|
|
|
/**
|
|
* 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', (global: any, Zone: ZoneType, api: _ZonePrivate) => {
|
|
const symbolState: string = api.symbol('state');
|
|
const UNRESOLVED: null = null;
|
|
const 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 as any)[api.symbol('patchPromiseForTest')] = function patchPromiseForTest() {
|
|
let oriThen = (Promise as any)[Zone.__symbol__('ZonePromiseThen')];
|
|
if (oriThen) {
|
|
return;
|
|
}
|
|
oriThen = (Promise as any)[Zone.__symbol__('ZonePromiseThen')] = Promise.prototype.then;
|
|
Promise.prototype.then = function() {
|
|
const chained = oriThen.apply(this, arguments);
|
|
if ((this as any)[symbolState] === UNRESOLVED) {
|
|
// parent promise is unresolved.
|
|
const asyncTestZoneSpec = Zone.current.get('AsyncTestZoneSpec');
|
|
if (asyncTestZoneSpec) {
|
|
asyncTestZoneSpec.unresolvedChainedPromiseCount++;
|
|
chained[symbolParentUnresolved] = true;
|
|
}
|
|
}
|
|
return chained;
|
|
};
|
|
};
|
|
|
|
(Promise as any)[api.symbol('unPatchPromiseForTest')] = function unpatchPromiseForTest() {
|
|
// restore origin then
|
|
const oriThen = (Promise as any)[Zone.__symbol__('ZonePromiseThen')];
|
|
if (oriThen) {
|
|
Promise.prototype.then = oriThen;
|
|
(Promise as any)[Zone.__symbol__('ZonePromiseThen')] = undefined;
|
|
}
|
|
};
|
|
});
|