docs: function fixedFromCharCode(codePt) {
  
    if (codePt > 0xFFFF) {
      codePt -= 0x10000
      return String.fromCharCode(
        0xD800 + (codePt >> 10), 0xDC00 + (codePt & 0x3FF)
      )
    } else {
      return String.fromCharCode(codePt)
    }
  }