import { Phoneme } from './phoneme';
import { Stress } from './stress';
export declare class Syllable {
    stress: Stress | null;
    private _haveVowel;
    private phonemes;
    get haveVowel(): boolean;
    isEmpty(): boolean;
    addPhoneme(phoneme: Phoneme): void;
    toArpabet(): string;
    toAmericanPhoneticAlphabet(hideStressMark?: boolean): string | undefined;
    toEnglishPhoneticAlphabet(hideStressMark?: boolean): string | undefined;
    toIPA(hideStressMark?: boolean): string | undefined;
}