Function patchBluebird

packages/zone.js/lib/extra/bluebird.ts:11–93

(Zone: ZoneType)

import {ZoneType} from '../zone-impl';

export function patchBluebird(Zone: ZoneType): void {
  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);
          },
        );
      });

      if (typeof window !== 'undefined') {
        window.addEventListener('unhandledrejection', function (event: any) {
          const error = event.detail && event.detail.reason;
          if (error && error.isHandledByZone) {
            event.preventDefault();
            if (typeof event.stopImmediatePropagation === 'function') {
              event.stopImmediatePropagation();
            }
          }
        });
      } else if (typeof process !== 'undefined') {
        process.on('unhandledRejection', (reason: any, p: any) => {
          if (reason && reason.isHandledByZone) {
            const listeners = process.listeners('unhandledRejection');
            if (listeners) {
              // remove unhandledRejection listeners so the callback
              // will not be triggered.
              process.removeAllListeners('unhandledRejection');