export declare class DurableQueue<T> {
    readonly queue: string;
    readonly scope: string;
    constructor(queue: string, scope: string);
    enqueue(id: string, payload: T, now?: number): void;
    pending(limit?: number): T[];
    delete(id: string): void;
    claim(leaseMs: number): {
        id: string;
        payload: T;
        token: string;
    } | null;
    renew(id: string, token: string, leaseMs: number): boolean;
    finish(id: string, token: string, success: boolean): void;
    clearProcessed(olderThanMs?: number): number;
}