common/utils

Junk Drawer!

Misc utility functions

A place to put all that code you want to share but don't know where to put it.

Ideally, if it's here, it's reuseable enough that others can use it also. So, the usual tips apply - break the problem down as much as possible so you can compose the solution you need with various parts - making it easier for others to reuse pieces.
We've got lodash as a dependency - before adding a new util, see if there is a lodash package that can be imported (& re-exported) as it means we won't need maintain and write the tests.
Adding to the above tip: Often you might find a function in lodash you weren't expecting can apply to your problem.

It's hard to predict what will end up here - always keeping an eye on possible groupings when working in this area would be helpful