import { AsyncHandler } from './AsyncHandler';
/**
 * A composite handler that executes handlers in parallel.
 * Handlers that can not handler the input will be ignored.
 * The `canHandle` check of this handler will always succeed.
 */
export declare class ParallelHandler<TIn = void> extends AsyncHandler<TIn> {
    protected readonly handlers: AsyncHandler<TIn, unknown>[];
    constructor(handlers: AsyncHandler<TIn, unknown>[]);
    handle(input: TIn): Promise<void>;
}