how to install yearn code example
Example 1: install yarn
npm install -g yarn
Example 2: macos install yarn
brew install yarn
Example 3: yarn ubuntu
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