import { AbstractWorkerStore } from './AbstractWorkerStore';
import { IWorkerParams } from './IWorkerParams';
export type QueueElement = {
    key: string;
    params: IWorkerParams;
    inProgress: boolean;
};
export declare class DefaultWorkerStore extends AbstractWorkerStore {
    private queues;
    private lastActivityRecorded;
    constructor();
    lastActivity(): Promise<{
        name: string;
        date: Date;
    } | null>;
    push(params: IWorkerParams): Promise<string>;
    take(names: string[]): Promise<IWorkerParams | undefined>;
    release(params: IWorkerParams, _shouldKeepInQueue: boolean): Promise<void>;
    remove(params: IWorkerParams): Promise<void>;
    removeAll(): void;
    size(options?: {
        names?: string[];
        inProgress?: boolean;
    }): Promise<number>;
    getNamesAfterMemoryCleanUp(): Promise<string[][]>;
    onStop(): Promise<void>;
}