import type { InboxDeliveryAdapter } from './types.js';
export declare class ProactiveInboxWorker {
    private readonly delivery;
    private readonly intervalMs;
    private timer?;
    private running;
    private waiters;
    constructor(delivery: InboxDeliveryAdapter, intervalMs?: number);
    start(): void;
    stop(): Promise<void>;
    tick(): Promise<void>;
}