import { ITaskService } from "../../domain/definitions/interfaces/ITaskService";
import { ProgressMessage } from "./messages/ProgressMessage";
/**
 * A service that utilizes a Web Worker instance to offload background tasks
 * and handle execution of tasks, termination, and progress updates.
 * @template TInput The type of input data sent to the worker
 * @template TOutput The type of output data received from the worker
 * @implements {ITaskService<TInput, TOutput>}
 */
export declare class WorkerService<TInput, TOutput> implements ITaskService<TInput, TOutput> {
    /**
     * The Worker instance responsible for executing tasks in a separate thread.
     * Handles computations and communication without blocking the main thread.
     */
    private readonly _worker;
    /**
     * Callback function for handling progress updates during task execution.
     */
    private progressCallback?;
    /**
     * Creates a new WorkerService instance.
     * @param {URL} workerScriptPath The URL of the worker script to be loaded
     */
    constructor(workerScriptPath: URL);
    /** @inheritDoc */
    execute(data: TInput): Promise<TOutput>;
    /** @inheritDoc */
    terminate(): void;
    /** @inheritDoc */
    onProgress(callback: (data: ProgressMessage) => void): void;
}