/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall)"
# node 8.0+
# brew
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
# yarn
brew update
brew install yarn
# vue-cli
yarn global add @vue/cli
# install packages
yarn