function isEmoji(str) {
    const ranges = [
      '\ud83c[\udf00-\udfff]', // U+1F300 to U+1F3FF
      '\ud83d[\udc00-\ude4f]', // U+1F400 to U+1F64F
      '\ud83d[\ude80-\udeff]', // U+1F680 to U+1F6FF
    ];

    const re = new RegExp(`/^${ranges.join}$/`, 'g');

    let flag;
    [...str].forEach((l) => {
      if (l.match(re)) {
        flag = true;
      } else {
        flag = false;
      }
    });

    return flag;
  }