02. Message Translator js exam

function solve(args) {

  const encMessage = [];
  const numberMsg = Number(args.shift());
  const pat = /!(?<code>[A-Z][a-z]{3,})!:\[(?<message>[a-zA-z]{8,})\]/g;

  for (let i = 0; i < numberMsg; i++) {
    const strMsg = args[i];

    const strGroups = pat.exec(strMsg);

    if (strGroups) {
      const { code, message } = strGroups.groups;

      message.split('').forEach((ch) => {
        const takeLetterIndex = message.indexOf(ch);
        const takeLetterCode = message.charCodeAt(takeLetterIndex);

        encMessage.push(takeLetterCode);
      });

      console.log(`${code}: ${encMessage.join(' ')}`);
    } else {
      console.log('The message is invalid');
    }
  }
}