Method constructor

packages/zone.js/lib/common/promise.ts:496–518

(
        executor: (
          resolve: (value?: R | PromiseLike<R>) => void,
          reject: (error?: any) => void,
        ) => void,
      )

      }

      constructor(
        executor: (
          resolve: (value?: R | PromiseLike<R>) => void,
          reject: (error?: any) => void,
        ) => void,
      ) {
        const promise: ZoneAwarePromise<R> = this;
        if (!(promise instanceof ZoneAwarePromise)) {
          throw new Error('Must be an instanceof Promise.');
        }
        (promise as any)[symbolState] = UNRESOLVED;
        (promise as any)[symbolValue] = []; // queue;
        try {
          const onceWrapper = once();
          executor &&
            executor(
              onceWrapper(makeResolver(promise, RESOLVED)),
              onceWrapper(makeResolver(promise, REJECTED)),
            );
        } catch (error) {
          resolvePromise(promise, false, error);
        }
      }

      get [Symbol.toStringTag]() {
        return 'Promise' as any;