/**
 *
 * @param string
 * @returns
 */
const isSpecial = (str: string, len = 4) => {
  if (str.length < len) {
    return false;
  }

  const matchNumber = /\d{4,30}/gi;
  const mt = str.match(matchNumber);
  if (mt) {
    for (let j = 0; j < mt.length; j++) {
      let a = mt[j];
      let n = 0;
      let m = 0;
      for (let i = 0; i < a.length - 1; i++) {
        if (a.charCodeAt(i) - a.charCodeAt(i + 1) == -1) {
          n++;
        } else {
          n = 0;
        }
        if (a.charCodeAt(i) - a.charCodeAt(i + 1) == 1) {
          m++;
        } else {
          m = 0;
        }
        if (n >= 3 || m >= 3) {
          return true;
        }
      }
    }
  }
  return false;
};

export default isSpecial;