#!/usr/bin/env bash # yarn is installed if not_installed "yarn"; then echo "Installing yarn..." # Install yarn 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 update sudo apt install --no-install-recommends yarn fi echo "yarn is installed" yarn --version