Using jest in my react app, describe is not defined

I believe the answer here is the answer to your question.

TL;DR;:

add the following to your .eslintrc file:

"env": {    "jest": true}

reactjs jestjs eslint eslintrc

Are your test files under a the "test" folder? make sure jest is install properly and listed on your package.json and under scripts have:

"test": "jest --coverage",

you can run the script with npm test

CodeHunter