code: function defSortFn (a, b) {
      const a1 = `${a}`;
      const b1 = `${b}`;
      if (a1 < b1) {
          return -1;
      }
      if (a1 > b1) {
          return 1;
      }
      return 0;
  }
docs: The default sort function.
  
  @param {*} a - The first value.
  @param {*} b - The second value.
  @return {number} Returns the comparison result e.g. 1 or 0 or -1.