export declare const error: (msg: string | null, exit: boolean) => void;
export declare const warn: (text: string) => void;
export declare const info: (text: string) => void;
export declare const question: (text: string, comment: null | string, output?: boolean) => string;
export declare const step: (msg: string, output?: boolean) => string;
export declare const success: (text: string, comment?: null | string, output?: boolean) => string;
export declare const comment: (text: string, output?: boolean) => any;