import { Subject } from 'rxjs';
import { IImgstryThread, IThreadData, IThreadResult } from '../../../core/imgstry.thread';
import { IDisposable } from '../../../types';
/**
 * Browser thread option contract.
 *
 * @export
 * @interface ImgstryThreadOptions
 */
export interface ImgstryThreadOptions {
    isEnabled?: boolean;
    isDebugEnabled?: boolean;
}
/**
 * Thread communication layer for the browser.
 *
 * @export
 * @class ImgstryThread
 * @implements {IImgstryThread}
 * @implements {IDisposable}
 * @ignore
 */
export declare class ImgstryThread implements IImgstryThread, IDisposable {
    process$: Subject<IThreadResult>;
    private _disposed$;
    private _worker;
    private _logger;
    /**
     * Creates an instance of ImgstryThread.
     * @param {ImgstryThreadOptions} _options The thread options.
     * @memberof ImgstryThread {isEnabled, isDebugEnabled}
     * @constructor
     */
    constructor(_options: ImgstryThreadOptions);
    /**
     * Queues a new set of operations, throttled @ 250ms.
     *
     * @param {IThreadData} data {
     *     imageData,
     *     operations,
     *   }
     * @returns {Promise<IThreadResult>} A promise with the resulting image.
     * @memberof ImgstryThread
     */
    run({ imageData, operations, }: IThreadData): Promise<IThreadResult | undefined>;
    /**
     * Terminates the current worker thread and completes active streams.
     *
     * @memberof ImgstryThread
     * @returns {void}
     */
    dispose(): void;
    private _handleMessage;
    private _handleError;
}