@malagu/core/src/common/utils/promise-util.ts

export class Deferred<T> {
    resolve: (value?: T | PromiseLike<T>) => void;
    reject: (err?: any) => void; // tslint:disable-line

    promise = new Promise<T>((resolve, reject) => {
        this.resolve = resolve;
        this.reject = reject;
    });
}