import type { OutboundMessage } from '../transport-types.js';
export interface PendingOutbound {
    id: string;
    enqueuedAt: number;
    message: OutboundMessage;
}
export declare class OutboundPersistStore {
    private readonly queue;
    constructor(scope: string);
    enqueue(message: OutboundMessage): string;
    ack(id: string): void;
    peek(): readonly PendingOutbound[];
}