import { ReadLine, ReadLineOptions } from 'readline';
export declare function createRL(options?: ReadLineOptions): ReadLine;
export declare const getRL: () => ReadLine;
export declare namespace IO {
    /**
     * @description lineNum start from 0
     * */
    function forEachLine(onnext: (line: string, lineNum: number) => void, oncomplete?: () => void): void;
    /**
     * @description lineNum start from 0
     * */
    function mapLine<A>(f: (line: string, lineNum: number) => A): Promise<A[]>;
    function collect(): Promise<string[]>;
}