Install Jest
This course is all about unit testing with Jest and in this lesson, we'll learn how to install Jest in our project.
To get started, we need a package.json
. Go to your project directory and run the following commands in your terminal:
yarn init -y
```
Then we need to install Jest:
yarn add --dev jest
Add support for babel:
yarn add --dev babel-core babel-jest babel-preset-env
Create a babel preset file:
touch .babelrc
And add the current preset, to `.babelrc`:
{ "presets": [ "env" ] }
And voilà, Jest is installed!