The size of a code file doesn’t matter. What matters is the amount of state the code in the file manipulates. For example, a 100k line code file with 500 pure f

The size of a code file doesn’t matter. What matters is the amount of state the code in the file manipulates. For example, a 100k line code file with 500 pure functions not using any global state is fine. It is simple. However a 100k line code file with 500 functions that all manipulate 1000+ global variables is extremely complex and hard to maintain because of the undocumented global state invariants and hidden side effects.