export interface SameLengthOptions<T, B> {
    format?: (item: T, index: number, arr: T[]) => string;
    formatBack?: (item: string, index: number, arr: string[]) => B;
    /**
     * max length of string, the default value is the maximum length of string in the array
     */
    max?: number | ((maxStrLen: number) => number);
    /**
     * placeholder string or char, the default value is `' '`
     */
    placeholder?: string;
    /**
     * placement of string if its length is shorter than the maximum
     * @choice center: `['a', 'bbb']` => `[' a ', 'bbb']`
     * @choice left: `['a', 'bbb']` => `['a  ', 'bbb']`
     * @choice right: `['a', 'bbb']` => `['  a', 'bbb']`
     */
    placement?: 'center' | 'left' | 'right';
    prefix?: string;
    suffix?: string;
}
export declare const SameLengthDefaultOptions: SameLengthOptions<any, any>;
declare const _default: <T = string, B = string>(arr: T[], options?: SameLengthOptions<T, B> | undefined) => B[];
export default _default;