Yarn version 2

Christoffer Niska

Why a version 2?

Legacy architecture 🏢

Initial stack inherit too much from NPM, undocumented quirks, confusing configuration

Easier contributions 👨🏻‍💻

Written in TypeScript, scoped features, lower risk of unwanted interractions

New features

Offline mirror 🔮

No network connection required
which means more reliable builds

Plug'n'Play 🔌

Generated .pnp.js file
(similar to autoload.php) 

Improved workspaces 🛠

Decouple monoliths into subprojects while still allowing for a "mono-repository"

Improved logging 📄

Message codes and colors to emphasize importantance

Yarn DLX ⚙️

NPX for Yarn
Install remote packages globally and run them locally
without updating package.json

Interactive mode 🕹

Select between versions, confirm actions for each workspace separately, etc.

Yarn UP ☁️

Upgrade packages across workspaces

Constraints 🔗

Linting for package.json
with auto-fixable rules

Zero-installs 🚀

Commit node_modules to run yarn install only once

Recap 💡

Offline mirror
Improved workspaces
Improved logging
Yarn DLX & Yarn UP
Constraints
Zero-installs

Try it out 🧪

bit.ly/docker-yarn-berry

Read more 📚

yarnpkg.github.io/berry

Thank you 🙏🏻