/**
 * Handle input events from the keyboard,
 *  specifically key trigger/press/release events.
 *  Also expose raw input array for convenience.
 */
export declare const KS_TRIGGERED = 0;
export declare const KS_PRESSED = 1;
export declare const KS_RELEASED = 2;
export declare const rawKeys: {
    [key: string]: boolean;
};
export declare function onKeyEvent(key: string | number, keyState: number, fn: () => void): number;
export declare function offKeyEvent(key: string | number, keyState: number, handlerId: number): void;