Mine is that the useState hook is an actual plague on the entire React ecosystem. Regardless of your opinions of React, if you wanna use something then use it right.
That's amazing! These days you can download most languages documentation to Kiwix. I have Zig, C++, C, HTML, Python, and probably a few others along with whatever is in 2024 Wikipedia. It's really more documentation than you could possibly need to make most things.