import "reflect-metadata";
/**
 * Metadata key that marks methods as queue workers.
 */
export declare const TASKS_QUEUE_WORKER_METADATA: unique symbol;
/**
 * Method-level registration options for queue workers discovered via NestJS.
 */
export interface WorkerOptions {
    /**
     * Queue name this method should consume.
     */
    queue: string;
    /**
     * Optional pool name. If omitted, defaults to `default`.
     */
    pool?: string;
}
/**
 * Mark a provider method as a queue worker handler.
 *
 * The method should follow the runtime contract:
 * `(payload: any, context: TaskContext) => Promise<void>`.
 */
export declare const Worker: (options: WorkerOptions) => MethodDecorator;