it depends what you mean. If you ask it "give me a library same as X" by name and it does it then this will surely be based on the code of the library and may

it depends what you mean. If you ask it "give me a library same as X" by name and it does it then this will surely be based on the code of the library and may even contain the actual code of the library. Don't do this. If you feed it the code of the library piece by piece and ask for something "equivalent" that's even worse. Explicitly derivative. If you write your own documentation of how the library works but don't mention it by name and it's not a very special purpose library and the LLM writes to your new spec... Then probably you'll spend a lot to get a worse version. IANAL