/**
 * SoundHelper class provides methods to play sound effects asynchronously.
 * The sounds are only loaded when needed, optimizing resource usage.
 */
export declare class SoundHelper {
    /**
     * Audio element for the "tick" sound.
     * Loaded only when `playTick` is called for the first time.
     */
    private static tick;
    /**
     * Audio element for the "win" sound.
     * Loaded only when `playWin` is called for the first time.
     */
    private static win;
    private static bubble;
    private static double_bubble;
    /**
     * Loads a sound asynchronously and returns an HTMLAudioElement.
     * @param filePath - The path to the sound file to be loaded.
     * @returns A promise that resolves to the loaded HTMLAudioElement.
     */
    private static loadSound;
    /**
     * Plays the "tick" sound.
     * If the sound hasn't been loaded yet, it loads asynchronously before playing.
     * The sound is stopped and rewound if it's already playing.
     * @param volume - Optional volume level for the sound (0.0 to 1.0).
     * @returns A promise that resolves when the sound starts playing.
     */
    static playTick(volume?: number): Promise<void>;
    /**
     * Plays the "win" sound.
     * If the sound hasn't been loaded yet, it loads asynchronously before playing.
     * @returns A promise that resolves when the sound starts playing.
     */
    static playWin(): Promise<void>;
    static playBubble(): Promise<void>;
    static playDoubleBubble(): Promise<void>;
}