I already have an application created with
I found a bug with the version of Jest which is 15.1.1. But I realized that in version 16 the bug is gone.
How to update Jest?
My problem is in the package.json of application there is no Jest package.
Jest is in other folder: node_modules/react-scripts.
The following commands are going to get the job done:
npm run eject npm install --save-dev firstname.lastname@example.org
But be careful here! The
eject command irreversibly eliminates the abstraction layer of
create-react-app exposing all of the dependencies and configuration to you. Though, your app is going to work just like before. You'll just have total control upon it, including the ability to update dependencies.