[orhanhenrik]

What’s nice about it is that a lot of projects use the same util, meaning it is very easy to read or edit if you are familiar with the library. If everybody writes a custom function you will need to learn how to do classNames separately in every project you work on.

[BigJono]

Yeah this argument falls flat in the case of classnames where we're comparing reading a two liner function with reading a page of docs for a library.

It's like everyone in JS land is allergic to writing a piece of code that isn't just playing lego with things written by a real developer.