Fast, reliable, and secure dependency management.
Ultra Fast.
Yarn caches every package it downloads so it never needs to download it again. It alsoparallelizes operations to maximize resource utilization so install times arefaster than ever.
Mega Secure.
Yarn uses checksums to verify the integrity of every installed packagebefore its code is executed.
Super Reliable.
Using a detailed, but concise, lockfile format, and a deterministic algorithmfor installs, Yarn is able to guarantee that an install that worked on onesystem will work exactly the same way on any other system.
What are you waiting for?
Get StartedOffline Mode
If you've installed a package before, you can install it again withoutany internet connection.
Deterministic
The same dependencies will be installed the same exact way across everymachine regardless of install order.
Network Performance
Yarn efficiently queues up requests and avoids request waterfalls in orderto maximize network utilization.
Same Packages
Install any package from npm and keep your package workflowthe same.
Network Resilience
A single request failing won't cause an install to fail. Requests are retriedupon failure.
Flat Mode
Resolve mismatching versions of dependencies to a single version to avoidcreating duplicates.