This is a really big deal. We have a very large/complex web application & API with a large number of dependencies, and not a single npm alternative (pnpm, ied,

This is a really big deal. We have a very large/complex web application & API with a large number of dependencies, and not a single npm alternative (pnpm, ied, npm-install) could figure out the tree properly. It has been working well with our npm proxy and is basically a faster, better-deduped drop-in replacement that removes our need for npm-cache, npm-check-updates, and all of our shrinkwrap hacks. This is finally the npm rewrite we've been waiting for. In looking at the yarn repository, it's nice to see a clean, modern build, ES6 + async/await, Flow typing, and so on. This is what a well-maintained JS project looks like in 2016 that's built for production use. npm, for all its flaws, was a revolution when it was first written. But since then, it has been large, unruly, difficult to maintain, and has largely unaddressed many important production use cases. It is nice to see a group of companies using Node in production take the lead on addressing problems that really matter to production JS apps.