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export default function decodeMessage(key: string, message: string): string {    const map = new Map<string, string>([[" ", " "]]);    const raw = "abcdefghijklmnopqrstuvwxyz";    let index = 0;    for (const char of key) {        if (map.has(char)) {            continue;        }        if (key === " ") continue;        map.set(char, raw[index]);        index++;    }    return Array.prototype.map        .call(message, (char) => map.get(char) ?? char)        .join("");}