02. Fancy Barcodes js exam

function solve(args) {
  const input = args.slice(1);
  const pattern = /^(?<start>@#+)(?<barcode>[A-Z][A-Za-z0-9]{4,}[A-Z])(?<end>@#+)$/;
  input.forEach((line) => {
    let code = '';
    const match = pattern.exec(line);
    if (match) {
      for (const el of match.groups.barcode) {
        if (el.charCodeAt() >= 48 && el.charCodeAt() <= 57) {
          code += el;
        }
      }
      code === '' ? console.log('Product group: 00') : console.log(`Product group: ${code}`);
    } else {
      console.log('Invalid barcode');
    }
  });
}