import type { Readable } from "svelte/store";
export interface WebWorkerReturn<Data = any> {
    data: Readable<Data>;
    error: Readable<Data>;
    post: typeof Worker.prototype["postMessage"];
    terminate: () => void;
    wk: Readable<Worker | undefined>;
}
/**
 * Simple Web Workers registration and communication.
 *
 * @param url
 * @param workerOptions
 */
export declare function worker<Data>(url: string, options?: WorkerOptions): WebWorkerReturn<Data>;