Install Jest, Babel, and ESLint in your project directory, install Jest, Babel and ESList by using the supplied package.json and run npm install.
Configuration files Add the files below to your project directory
package.json Click here to show/hide file contents babel.config.js Click here to show/hide file contents .eslintrc.js Click here to show/hide file contents Finally… Don’t forget to run npm install from the terminal of your project folder to install all necessary project dependencies.