import { Queue } from '../core/queue.ts';
import type { JobStatus, JobMeta, QueueMessage, BaseJobOptions, WithPriority, WithDelay } from '../interfaces/job.ts';
import type { DatabaseAdapter } from '../interfaces/database.ts';
import type { QueueOptions } from '../interfaces/plugin.ts';
export interface DbJobRequest<TPayload> extends BaseJobOptions, WithPriority, WithDelay {
    /** Job payload */
    payload: TPayload;
}
export declare class DbQueue<TJobMap = Record<string, any>> extends Queue<TJobMap, DbJobRequest<any>> {
    private db;
    constructor(db: DatabaseAdapter, options: QueueOptions);
    get adapter(): DatabaseAdapter;
    protected pushMessage(payload: unknown, meta: JobMeta): Promise<string>;
    protected reserve(timeout: number): Promise<QueueMessage | null>;
    protected completeJob(message: QueueMessage): Promise<void>;
    protected failJob(message: QueueMessage, error: unknown): Promise<void>;
    status(id: string): Promise<JobStatus>;
}