Yarn Package Manager

Yarn is a software package manager for the JavaScript ecosystem that provides a fast, reliable, and secure alternative for managing project dependencies. Developed by Facebook, it automates the process of installing, updating, configuring, and removing code packages from a central registry, primarily the npm registry. Yarn is distinguished by its use of a lockfile (`yarn.lock`) which ensures that every developer on a project, as well as the production environment, has the exact same versions of all dependencies, leading to deterministic and reproducible builds. Through its command-line interface, developers can efficiently manage the libraries and tools their projects rely on, streamlining the development workflow and improving overall stability.