import * as PIXI from "pixi.js";
/**
 * Service for tobii or openmv_fp
 */
export declare class FaceTrackerService extends PIXI.utils.EventEmitter {
    protected _client: WebSocket;
    protected _poss: number[][];
    protected _prev: number[] | undefined;
    protected _f: number;
    constructor();
    destroy(): void;
    private _errorHandler;
    private _messageHandler;
}
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