code: function rsMDSEncode(k0, k1) {
  
          var index = 0;
          for (; index < 4; index += 1) {
  
            k1 = rsRem(k1);
          }
          k1 ^= k0;
          for (index = 0; index < 4; index += 1) {
  
            k1 = rsRem(k1);
          }
          return k1;
        }
docs: /* eslint-enable no-shadow /* eslint-disable no-bitwise