docs: function encode(data, ch) {
          if (!self.utfMouse) {
            if (ch === 255) return data.push(0);
            if (ch > 127) ch = 127;
            data.push(ch);
          } else {
            if (ch === 2047) return data.push(0);
            if (ch < 127) {
              data.push(ch);
            } else {
              if (ch > 2047) ch = 2047;
              data.push(0xC0 | (ch >> 6));
              data.push(0x80 | (ch & 0x3F));
            }
          }
        }