/*!
 * Copyright (c) Microsoft Corporation.
 * Licensed under the MIT License.
 */
import { Core } from "../main.js";
export declare class Keyboard {
    private _pressedKeys;
    private _previousPressedKeys;
    private _core;
    constructor(core: Core);
    initialize(element: HTMLElement): void;
    update(elapsedTime: number): void;
    isKeyDown(key: string): boolean;
    wasKeyReleased(key: string): boolean;
    private _handleKeyDown;
    private _handleKeyUp;
}