export interface WorkerCanvasSize {
    width: number;
    height: number;
    top: number;
    left: number;
    pixelRatio: number;
}
export interface SerializedDomEvent {
    type: string;
    pointerId?: number;
    pointerType?: string;
    button?: number;
    buttons?: number;
    altKey?: boolean;
    ctrlKey?: boolean;
    metaKey?: boolean;
    shiftKey?: boolean;
    movementX?: number;
    movementY?: number;
    clientX?: number;
    clientY?: number;
    offsetX?: number;
    offsetY?: number;
    pageX?: number;
    pageY?: number;
    screenX?: number;
    screenY?: number;
    deltaX?: number;
    deltaY?: number;
    deltaZ?: number;
    deltaMode?: number;
}
export interface WorkerRendererStats {
    drawCalls: number;
    frameCalls: number;
    triangles: number;
    points: number;
    lines: number;
    /** Rolling average frame interval in milliseconds. */
    frameTime: number;
    frameTiming: WorkerFrameTimingStats;
}
export interface WorkerFrameTimingStats {
    /** Number of actively rendered frames in the rolling window. */
    samples: number;
    fps: number;
    average: number;
    p95: number;
    max: number;
    /** Percentage of samples above the 25 ms budget. */
    missedFramePercent: number;
}
export interface WorkerErrorData {
    message: string;
    name?: string;
    stack?: string;
}
export type HostToWorkerMessage = {
    type: 'init';
    canvas: OffscreenCanvas;
    size: WorkerCanvasSize;
} | {
    type: 'resize';
    size: WorkerCanvasSize;
} | {
    type: 'dom-event';
    event: SerializedDomEvent;
} | {
    type: 'request';
    id: number;
    command: string;
    payload?: unknown;
} | {
    type: 'dispose';
};
export type WorkerToHostMessage = {
    type: 'initialized';
} | {
    type: 'ready';
    detail?: unknown;
} | {
    type: 'status';
    message: string;
} | {
    type: 'stats';
    stats: WorkerRendererStats;
} | {
    type: 'event';
    eventType: string;
    detail?: unknown;
} | {
    type: 'response';
    id: number;
    result?: unknown;
    error?: WorkerErrorData;
} | {
    type: 'error';
    error: WorkerErrorData;
} | {
    type: 'disposed';
};
export declare function serializeError(error: unknown): WorkerErrorData;