/**
 * Synthesized 8-bit SFX for the shooter easter egg.
 *
 * All sounds use the Web Audio API — square waves + band-passed noise,
 * the way original hardware made them. No audio files, no deps, no bundle weight.
 *
 * SSR-safe: nothing runs at import time (typeof window guard).
 * Autoplay-safe: AudioContext created lazily on the first play call,
 * which is always downstream of a user gesture.
 */
export declare function playPew(): void;
export declare function playZap(): void;
export declare function playCoin(): void;
export declare function playPowerUp(): void;
export declare function playFanfare(): void;