can i use the code in a minecraft client called matchafi

[ItzPrism]

title. also works with optifine?

[SpomJ]

how do you think it's going to work with optifine bro it's like to installing a mod on bedrock edition

also this project doesn't have a license so ig do whatever you want. Like what're they gonna do? Sue you?
It's licensed under LGPL, you can read it and decide whether you can use it.

[Felix14-v2]

project doesn't have a license so ig do whatever you want

If a project didn't specified its licence, then it is automatically protected by ARR (All Rights Reserved), and you can't do anything with it except direct use.