import type { Sound } from "./sound.ts";
import { type HTMLAudioElementWithUnlocked } from "./types.ts";
export declare class AudioEngine {
    html5PoolSize: number;
    sounds: Sound[];
    masterGain: GainNode | null;
    noAudio: boolean;
    usingWebAudio: boolean;
    autoSuspend: boolean;
    ctx: AudioContext | null;
    autoUnlock: boolean;
    state: string;
    constructor();
    volume(vol?: number): number | this;
    mute(muted: boolean): this;
    stop(): this;
    unload(): this;
    codecs(ext: string): boolean;
    /**
     * Create the shared `AudioContext` and master gain node if they do not exist
     * yet, and return the context.
     *
     * Idempotent: with a context already live this returns it untouched. It used
     * to be a free function in `helpers/` that reached back into the singleton,
     * with no internal guard — so six call sites each carried their own
     * `if (!ctx)` check to stop a second context being built and the first
     * leaked.
     *
     * Browsers create a context in the `suspended` state until a user gesture
     * resumes it, so building one early costs nothing and plays nothing.
     * @returns the shared context, or `null` when Web Audio is unavailable
     */
    ensureContext(): AudioContext | null;
}
//# sourceMappingURL=engine.d.ts.map