import { type EncodeOptions, type Separator } from "./translate.js";
export type MorseAudioInputType = "auto" | "text" | "morse";
export interface MorseAudioOptions extends EncodeOptions {
    inputType?: MorseAudioInputType;
    wpm?: number;
    frequency?: number;
    sampleRate?: number;
    volume?: number;
    letterSeparatorPattern?: Separator;
    wordSeparatorPattern?: Separator;
}
export declare class MorseAudio {
    private readonly input;
    private readonly options;
    private readonly tokens;
    private cachedBuffer?;
    private playback?;
    constructor(input: string, options?: MorseAudioOptions);
    play(): Promise<void>;
    stop(): void;
    save(filePath: string): Promise<void>;
    toBuffer(): Buffer;
    private ensureBuffer;
    private spawnPlayback;
}
export declare function audio(input: string, options?: MorseAudioOptions): MorseAudio;
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