Specify code to run before any Jest setup happens

Question

The tl;dr is:

1) How can I have Jest use the native require function to load all modules in my tests anywhere.

2) Where / how would I go about modif

Answer 1

setupFiles worked for me. Add this in package.json:

"jest": {
    "setupFiles": ["./my_file.js"]
  },

https://jestjs.io/docs/en/configuration.html#setupfiles-array