how to use uint8arry in this program

[hotDOGEEE]

The player is used for network transport, and network transport is generally without sign bits ，
In this programall used inttype,not unit.I don't really understand why it was designed that way
。This has caused trouble for me, who is not specialized in web development, when using the player. How can I modify it if I want it to support uint8Array?