Comment by all_factz

React is hundreds of thousands of lines of code (or millions - I haven’t looked in awhile). Sure, you can start by having the LLM create a simple way to sync state across components, but in a serious project you’re going to run into edge-cases that cause the complexity of your LLM-built library to keep growing. There may come a point at which the complexity grows to such a point that the LLM itself can’t maintain the library effectively. I think the same rough argument applies to MomentJS.