/** returns nothing */
export declare type CallBackForEach<T> = (value: T, index?: number, collection?: T[]) => Promise<void>;
/**
 * Async ForEach function
 *
 * @export
 * @template T
 * @param {T[]} elements
 * @param {CallBackForEach<T>} cb
 * @returns {Promise<void>}
 */
export declare function aForEach<T>(elements: T[], cb: CallBackForEach<T>): Promise<void>;