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import { groupBy } from "../deps.ts";
export default function reformat(s: string) {    if (s.length <= 1) return s;    const result = groupBy(s, (c) => Number(/\d/g.test(c)));    let digits = result[1] ?? [];    let chars = result[0] ?? [];    const count_number = digits.length;    const count_chars = s.length - count_number;    if (Math.abs(count_number - count_chars) > 1) {        return "";    }    if (digits.length < chars.length) {        [digits, chars] = [chars, digits];    }    return digits.map((d, i) => d + (chars[i] ?? "")).join("");}