What's Yarn?

• package manager for JavaScript

• replacement for npm

• developed by Facebook, Google and others

Why Yarn?

• 🔎 more precise ("secure") version management

• 🐎 faster than npm (installation speed)

• 🤖 entirely compatible with our current workflow

• 💅🏽 cleaner (and prettier!) log output than npm

Yarn installation

​brew update
brew install yarn
yarn --version

or

npm install yarn --global

Yarn's commands

npm init
npm install
npm install <package>
npm uninstall <package>
npm run watch
npm run publish

Yarn's commands

yarn upgrade <package>

Install newer versions via:

What else is new?

• yarn.lock file (please check into git)

One quirk…

• watch out for git-based packages:

Can I still use npm?

One more thing…

Yarn has its own package directory:

https://yarnpkg.com/en/packages

Danke.

Thanks.

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