import type { DataType } from '../../type/Data/DataType.ts';
/**
 * Creates a worker to handle whole eyefiles processing.
 * It is a separate file to avoid blocking the main thread.
 *
 * Workers must be instantiated in a specific way to work with TypeScript modules in Vite:
 *    new Worker(new URL('path/to/typescriptWorker.ts', import.meta.url), { type: 'module' })
 */
export declare class EyeWorkerService {
    worker: Worker;
    onData: (data: DataType) => void;
    constructor(onData: (data: DataType) => void);
    /**
     * Sends the given files to the worker.
     * @param files - The files to send.
     */
    sendFiles(files: FileList): void;
    /**
     * Makes a test postMessage call to the worker to check if the browser supports transferable streams.
     * If the browser does not support transferable streams, runtimes will throw an error.
     * This method catches the error and returns false.
     *
     * @returns {boolean} - Whether the browser supports transferable streams.
     */
    isStreamTransferable(): boolean;
    processDataAsStream(files: FileList): void;
    processDataAsArrayBuffer(files: FileList): Promise<void>;
    processJsonWorkspace(file: File): void;
    protected handleMessage(event: MessageEvent): void;
    protected handleError(event: ErrorEvent): void;
    handleUserInputProcess(): void;
    /**
     * Requests user input for further processing,
     * to determine how to parse stimuli in the file.
     *
     * The user input is then sent to the worker which resumes processing.
     */
    requestUserInput(): Promise<string>;
}