import { EventEmitter } from "node:events";
import { type BailianRegion } from "./bailian-endpoints.js";
type SocketOptions = {
    headers?: Record<string, string>;
};
type ProviderSocket = EventEmitter & {
    readyState: number;
    send: (data: string | Buffer) => void;
    close: (code?: number, reason?: string) => void;
};
type BailianTtsSocketFactory = (url: string, options: SocketOptions) => ProviderSocket;
export interface BailianTtsConfig {
    apiKey: string;
    region: BailianRegion;
    model: string;
    voice: string;
    sampleRate: number;
}
export interface BailianTtsClient {
    on(event: "started" | "finished", handler: () => void): this;
    on(event: "audio", handler: (chunk: Buffer) => void): this;
    on(event: "error", handler: (error: Error) => void): this;
    on(event: "closed", handler: (code?: number, reason?: string) => void): this;
    speak(text: string): void;
    close(): void;
}
interface BailianTtsClientOptions {
    socketFactory?: BailianTtsSocketFactory;
    taskIdFactory?: () => string;
}
export declare function createBailianTtsClient(config: BailianTtsConfig, options?: BailianTtsClientOptions): BailianTtsClient;
export {};
//# sourceMappingURL=bailian-tts.d.ts.map