/**
 *  Author: Big Red <knielsen@alertlogic.com>
 *  Copyright 2019 Alert Logic, Inc.
 */
/**
 * @public
 *
 *  AlBehaviorPromise is a simple extension of Promise that replicates the functionality provided by RxJS's BehaviorSubject.
 *  Promises already provide multicasting functionality, but it can be deucedly inconvenient to provide an inline
 *  executor, and rather obtuse to change the resolved value.
 *
 *  This class exposes the basic surface area of a Promise -- it is `then`able -- but allows the resolved value to change
 *  if necessary.
 */
export declare class AlBehaviorPromise<ResultType = any> {
    protected promise: Promise<ResultType>;
    protected resolver?: {
        (result: ResultType): void;
    };
    protected rejector?: {
        (error: any): void;
    };
    protected fulfilled: boolean;
    protected value: ResultType | null;
    constructor(initialValue?: ResultType | null);
    /**
     * Attaches a resolve/reject listener to the underlying promise.
     */
    then<TResult1 = ResultType, TResult2 = never>(callback?: ((value: ResultType) => TResult1 | PromiseLike<TResult1>) | undefined | null, error?: ((reason: any) => TResult2 | PromiseLike<TResult2>) | undefined | null): Promise<TResult1 | TResult2>;
    /**
     * Resolves the underlying promise with the given value.
     */
    resolve(result: ResultType): void;
    /**
     * Rejects the underlying promise with the given reason.
     */
    reject(reason: any): void;
    /**
     * Resets the promise back into an unfulfilled state.
     */
    rescind(): void;
    /**
     * Gets the last resolved value.
     */
    getValue(): ResultType | null;
    /**
     * Gets the fulfilled/pending state of the underlying promise.
     */
    isFulfilled(): boolean;
}