/**
 * Google Lyria 3 Pro Music Handler
 *
 * Synchronous generation against the Generative Language API. Returns
 * audio inline as base64 in the response.
 *
 * @module music/providers/LyriaMusic
 * @see https://ai.google.dev/gemini-api/docs/music-generation
 */
import type { MusicAudioFormat, MusicHandler, MusicOptions, MusicResult } from "../../types/index.js";
/**
 * Google Lyria 3 Pro Music Handler.
 *
 * Auth: `Authorization: Bearer ${GOOGLE_API_KEY}` or query-string
 * `?key=${GOOGLE_API_KEY}` (the latter is more compatible with the
 * Generative Language endpoints today).
 */
export declare class LyriaMusic implements MusicHandler {
    readonly maxDurationSeconds = 30;
    readonly supportedFormats: readonly MusicAudioFormat[];
    readonly supportedGenres: readonly string[];
    private readonly apiKey;
    private readonly baseUrl;
    private readonly model;
    constructor(apiKey?: string);
    isConfigured(): boolean;
    generate(options: MusicOptions): Promise<MusicResult>;
    private buildPrompt;
}