10+K lines spread across 1k file is equally as bad as 10+K line files IMO.
I tend to ensure each file serves exactly one purpose (e.g. in C# one file = one class, with a only few exceptions).
I use VS Code, but in every IDE with a file opening palette it's actually really fast: you want to look for the code to, let's say, generate an invoice, just search for "invoice" in the list of files and you'll find it immediatly.
(Also modules have their own problem, I was mainly talking in a general way since that's what the parent comment was talking about.)
I tend to ensure each file serves exactly one purpose (e.g. in C# one file = one class, with a only few exceptions).
I use VS Code, but in every IDE with a file opening palette it's actually really fast: you want to look for the code to, let's say, generate an invoice, just search for "invoice" in the list of files and you'll find it immediatly.
(Also modules have their own problem, I was mainly talking in a general way since that's what the parent comment was talking about.)