import { BaseHelper } from '../../base/base.helper';
import { IWorker } from './types';
export declare class WorkerPoolHelper extends BaseHelper {
    private static instance;
    protected registry: Map<string | symbol, IWorker<any>>;
    private numberOfCPUs;
    private ignoreMaxWarning;
    constructor(opts?: {
        ignoreMaxWarning?: boolean;
    });
    static getInstance(): WorkerPoolHelper;
    size(): number;
    get<MessageType>(opts: {
        key: string;
    }): IWorker<MessageType> | undefined;
    has(opts: {
        key: string;
    }): boolean;
    register<MessageType>(opts: {
        key: string;
        worker: IWorker<MessageType>;
    }): void;
    unregister(opts: {
        key: string;
    }): Promise<void>;
}
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