javascript - What's the second set of parentheses mean after a require statement in Node.js?

Question

I'm working with a coworkers code today and I saw something I've never seen before.

I understand the first part of the statement (require in the file clean.js).

But what's with the second set of parentheses?

require('./tasks/clean')('js', './dist/js')

Answer 1

Whatever is exported from ./tasks/clean is a function, so it's just being invoked with 'js' and './dist/js' as parameters

It is equivalent to the following:

const clean = require('./tasks/clean');
clean('js', './dist/js');