import { Observable } from 'rxjs';
import type { TypedMessageEvent } from '../types/typed-message-event';
import type { WorkerFunction } from '../types/worker-function';
export declare class WebWorker<T = any, R = any> extends Observable<TypedMessageEvent<R>> {
    private readonly worker;
    private readonly url;
    private readonly destroy$;
    constructor(url: string, options?: WorkerOptions);
    static fromFunction<T, R>(fn: WorkerFunction<T, R>, options?: WorkerOptions): WebWorker<T, R>;
    static execute<T, R>(fn: WorkerFunction<T, R>, data: T): Promise<TypedMessageEvent<R>>;
    private static createFnUrl;
    terminate(): void;
    postMessage(value: T): void;
}