export declare class PromiseHelper {
    /**
     * Validate that the provided object is a promise or not
     *
     * @param {any} obj the object to be validated as a promise
     *
     * @static
     * @public
     */
    static isAPromise(obj: any): boolean;
    /**
     * Allows to wait for a promise to be resolved or invoke the provided directly if the value is not a promise.
     * If the provided value is undefined no action will be taken
     *
     * @param {Promise | any} value the value to check and process
     * @param {Function} callback the callback to invoke when the value is processed,
     * the callback will accept a parameter that is the value or the value resolved from the promise
     * @returns void
     *
     * @static
     * @public
     */
    static handleAsPromiseIfRequired(value: any | Promise<any>, callback: (arg?: any) => void): void;
}