export declare enum WorkerMessageType {
    INIT = "init",
    INIT_SUCCESS = "init_success",
    INIT_ERROR = "init_error",
    DETECT = "detect",
    DETECT_SUCCESS = "detect_success",
    DETECT_ERROR = "detect_error",
    DISPOSE = "dispose"
}
export interface WorkerMessage {
    type: WorkerMessageType;
    id: string;
    data?: unknown;
}
export interface FaceMeshWorkerConfig {
    modelPath?: string;
    wasmPath?: string;
    delegate?: 'CPU' | 'GPU';
    numFaces?: number;
}
export interface FaceLandmark {
    x: number;
    y: number;
    z?: number;
}
export interface FaceMeshWorkerResult {
    landmarks: FaceLandmark[] | null;
    transformationMatrix: number[] | null;
    timestamp: number;
}
export declare class FaceMeshClient {
    private faceLandmarker;
    private initialized;
    private canvas;
    private ctx;
    initialize(config?: FaceMeshWorkerConfig): Promise<void>;
    detect(imageData: ImageData, timestamp: number): Promise<FaceMeshWorkerResult>;
    dispose(): void;
    isReady(): boolean;
    private ensureCanvas;
}