import { WindowOptions } from '../window/window-options';
import { NativeWindow } from '../window/native-window';
export declare function cancelAnimationFrame(engine: string, request: number): void;
export declare function requestAnimationFrame(engine: string, callback: FrameRequestCallback): number;
export declare function alert(engine: string, message?: string): void;
export declare function confirm(engine: string, message?: string): boolean;
export declare function createWindow(engine: string, options: WindowOptions): NativeWindow;
