export declare class Joypad {
    readonly pressedButtons: Set<BUTTON>;
    private interruptCallback;
    constructor();
    down(button: BUTTON): void;
    up(button: BUTTON): void;
    isPressed(button: BUTTON): boolean;
    setInterruptCallback(callback: () => void): void;
}
export declare enum BUTTON {
    LEFT = 0,
    RIGHT = 1,
    UP = 2,
    DOWN = 3,
    A = 4,
    B = 5,
    START = 6,
    SELECT = 7,
}