import { Observable } from 'rxjs';
/**
 * taksWorker, starts a script in its own process
 */
export declare class TaskWorker {
    #private;
    /**
     * if a worker dies due to error on anything else unexpected 3 times in a row
     *  it becomes false and can't start a new task anymore. the sub-process is killed
     */
    active: boolean;
    ready: Promise<unknown> | unknown;
    /** messages from the sub-process */
    messages$: Observable<{
        worker: TaskWorker;
        msg: any;
    }>;
    constructor(task: string);
    get id(): number;
    send(type: string, msg?: any): Promise<void>;
    kill(): Promise<void>;
    terminate(): Promise<void>;
}