To import functions or to write in the same file in RESTful?

I'm still learning Node and Express. I want to know what is a better practice:- Should I write functions that'll be used in the HTTP requests inside app.js and use them within the same file- Or should I create a separate file with exported functions and import them in app.js?Thanks!

Submitted November 29, 2019 at 05:47PM by optechhas