Suggest an editImprove this articleRefine the answer for “What is Yarn?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)**Yarn** is a package manager for JavaScript projects, created by Facebook as an alternative to npm. It performs the same tasks as npm (installing dependencies, managing versions, running scripts), but was designed to improve **speed, stability, and build predictability**. **Key point:** the `yarn.lock` file pins exact versions, so every developer gets the same install.Shown above the full answer for quick recall.Answer (EN)Image**Yarn** is a package manager for JavaScript projects, created by Facebook as an alternative to npm. It performs the same tasks as npm (installing dependencies, managing versions, running scripts), but was designed to improve **speed, stability, and build predictability**. --- ### Main features of Yarn 1. **Faster package downloads** Yarn uses aggressive caching, which speeds up repeat installs. 2. **Deterministic (predictable) dependencies** The `yarn.lock` file pins exact versions, so every developer gets the same install. 3. **Parallel package installation** Unlike older versions of npm, Yarn builds the dependency tree and installs it faster. 4. **Better output and developer UX** Commands are shorter, output is cleaner, less noise. --- ### Where it is used - in React, Next.js, Node.js projects - as an alternative to npm when stability and speed matter - in CI/CD, to guarantee identical builds --- ### Summary **Yarn is an alternative package manager for Node.js projects**, focused on speed, reliability, and determinism, performing the same functions as npm but with a different approach to installing and managing dependencies.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.