angular-cn/packages/zone.js/lib/extra/bluebird.ts

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/**
* @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
*/
Zone.__load_patch('bluebird', (global: any, Zone: ZoneType, api: _ZonePrivate) => {
// TODO: @JiaLiPassion, we can automatically patch bluebird
// if global.Promise = Bluebird, but sometimes in nodejs,
// global.Promise is not Bluebird, and Bluebird is just be
// used by other libraries such as sequelize, so I think it is
// safe to just expose a method to patch Bluebird explicitly
const BLUEBIRD = 'bluebird';
(Zone as any)[Zone.__symbol__(BLUEBIRD)] = function patchBluebird(Bluebird: any) {
// patch method of Bluebird.prototype which not using `then` internally
const bluebirdApis: string[] = ['then', 'spread', 'finally'];
bluebirdApis.forEach(bapi => {
api.patchMethod(
Bluebird.prototype, bapi, (delegate: Function) => (self: any, args: any[]) => {
const zone = Zone.current;
for (let i = 0; i < args.length; i++) {
const func = args[i];
if (typeof func === 'function') {
args[i] = function() {
const argSelf: any = this;
const argArgs: any = arguments;
return new Bluebird((res: any, rej: any) => {
zone.scheduleMicroTask('Promise.then', () => {
try {
res(func.apply(argSelf, argArgs));
} catch (error) {
rej(error);
}
});
});
};
}
}
return delegate.apply(self, args);
});
});
Bluebird.onPossiblyUnhandledRejection(function(e: any, promise: any) {
try {
Zone.current.runGuarded(() => { throw e; });
} catch (err) {
api.onUnhandledError(err);
}
});
// override global promise
global[api.symbol('ZoneAwarePromise')] = Bluebird;
};
});