React JS
JavaScript library for building user interfaces. Created by Facebook.
Yarn
JavaScript package manager compatible with npm that helps automate the process of installing, updating, configuring, and removing npm packages.
Install
# add Yarn repository
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
sudo apt-get update
sudo apt-get install nodejs yarn
yarn --version # verify