/**
 * One voice clip plays at a time, across every {@link TxVoiceClip} on the page.
 *
 * A conversation is a column of clips; starting a second one while the first keeps talking is
 * never what the press meant. The clip that starts claims the slot, and whichever clip held it
 * is paused — through its own `pause`, so it emits `pause` and resets its own state.
 */
interface PlaybackOwner {
    pause: () => void;
}
export declare function claimPlayback(owner: PlaybackOwner): void;
export declare function releasePlayback(owner: PlaybackOwner): void;
/** Test seam. */
export declare function currentPlaybackOwner(): PlaybackOwner | null;
export {};