yarn:

        A new package manager for JavaScript. Fast, reliable, and secure dependency management.Fast: Yarn caches every package it downloads so it never needs to again. It also parallelizes operations to maximize resource utilization so install times are faster than ever.Reliable: Using a detailed, but concise, lockfile format, and a deterministic algorithm for installs, Yarn is able to guarantee that an install that worked on one system will work exactly the same way on any other system.Secure: Yarn uses checksums to verify the integrity of every installed package before its code is executed.