/**
 * LiveKit join-token minting.
 *
 * Mints a short-lived JWT a browser uses to join a room. The token is signed
 * locally with the LiveKit API key/secret — no network call and no room
 * pre-creation (rooms are auto-created on first join).
 *
 * `livekit-server-sdk` is an optional dependency and is imported dynamically so
 * the core package does not require it unless the LiveKit voice agent is used.
 *
 */
import type { LiveKitTokenRequest } from "../../types/index.js";
/**
 * Mint a LiveKit join token for an authenticated participant.
 *
 * Grants `roomJoin` plus publish/subscribe for the named room. The room is
 * created automatically by LiveKit when the first participant joins.
 */
export declare function mintJoinToken(req: LiveKitTokenRequest): Promise<string>;