/**
 * This file was auto-generated by Fern from our API Definition.
 */
import * as environments from "../../../../environments.js";
import * as core from "../../../../core/index.js";
import * as Respeecher from "../../../index.js";
import * as stream from "stream";
import { TtsSocket } from "./Socket.js";
export declare namespace Tts {
    interface Options {
        environment?: core.Supplier<environments.RespeecherEnvironment | environments.RespeecherEnvironmentUrls>;
        /** Specify a custom URL to connect the client to. */
        baseUrl?: core.Supplier<string>;
        apiKey?: core.Supplier<string>;
        /** Additional headers to include in requests. */
        headers?: Record<string, string | core.Supplier<string | undefined> | undefined>;
    }
    interface RequestOptions {
        /** The maximum time to wait for a response in seconds. */
        timeoutInSeconds?: number;
        /** The number of times to retry the request. Defaults to 2. */
        maxRetries?: number;
        /** A hook to abort the request. */
        abortSignal?: AbortSignal;
        /** Additional headers to include in the request. */
        headers?: Record<string, string | core.Supplier<string | undefined> | undefined>;
    }
    interface ConnectArgs {
        /** Arbitrary headers to send with the websocket connect request. */
        headers?: Record<string, unknown>;
        /** Enable debug mode on the websocket. Defaults to false. */
        debug?: boolean;
        /** Number of reconnect attempts. Defaults to 30. */
        reconnectAttempts?: number;
    }
}
export declare class Tts {
    protected readonly _options: Tts.Options;
    constructor(_options?: Tts.Options);
    /**
     * The easiest way to generate text-to-speech audio. Not suitable for latency-sensitive applications.
     */
    bytes(request: Respeecher.tts.BytesGenerationRequest, requestOptions?: Tts.RequestOptions): core.HttpResponsePromise<stream.Readable>;
    private __bytes;
    /**
     * Stream text-to-speech audio as JSONL (JSON lines) objects over HTTP. A less performant alternative to WebSockets, without text input streaming.
     */
    sse(request: Respeecher.tts.StreamingGenerationRequest, requestOptions?: Tts.RequestOptions): core.HttpResponsePromise<core.Stream<Respeecher.tts.ServerSentEvent>>;
    private __sse;
    connect(args?: Tts.ConnectArgs): Promise<TtsSocket>;
    protected _getCustomAuthorizationHeaders(): Promise<{
        "X-API-Key": string | undefined;
    }>;
}