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!
