/// <reference types="emscripten" />
/**
 * Audio buffer cache manager
 * Avoids re-loading and re-decoding the same audio files
 *
 * Benefits:
 * - Multiple Howl instances for the same sound share one AudioBuffer
 * - Avoids redundant network requests and CPU-intensive decoding
 * - Particularly important for frequently played sounds (like beeps)
 *
 * @private
 */
declare class AudioCache {
    private cache;
    /**
     * Get a cached audio buffer promise
     * @param src Audio source URL (data URI or file path)
     * @returns Promise<AudioBuffer> if cached, undefined otherwise
     */
    get(src: string): Promise<AudioBuffer> | undefined;
    /**
     * Cache an audio buffer promise
     * @param src Audio source URL
     * @param promise Promise that resolves to decoded AudioBuffer
     */
    set(src: string, promise: Promise<AudioBuffer>): void;
    /**
     * Clear all cached buffers (useful for cleanup or testing)
     */
    clear(): void;
    /**
     * Get cache size (for monitoring)
     */
    size(): number;
}

export { AudioCache };