Suggest an editImprove this articleRefine the answer for “Why is pnpm most often used in monorepos?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)**pnpm** is most often used in monorepos because its architecture is ideally suited to managing many related packages inside a single repository. **Key point:** pnpm keeps one copy in `.pnpm-store` and creates hard links, saving gigabytes of disk space even when a monorepo holds dozens or hundreds of packages.Shown above the full answer for quick recall.Answer (EN)Imagepnpm is most often used in monorepos because its architecture is ideally suited to managing many related packages inside a single repository. --- ### **Main reasons** #### **1. Space savings from a shared cache** A monorepo often has dozens or hundreds of packages. npm and Yarn would store the same dependencies in every package. pnpm keeps *one copy in .pnpm-store* and creates hard links, saving gigabytes of disk space. #### **2. Fast dependency installation** pnpm installs dependencies in parallel and does not duplicate them, so in a monorepo `pnpm install` runs much faster than npm/Yarn. #### **3. A strict node_modules structure** pnpm clearly isolates each package's dependencies, which prevents "hidden" dependencies, a common problem in monorepos where a package accidentally works only because a dependency got pulled in from a neighboring package. #### **4. Linking packages locally without publishing** Through workspaces, one package can depend on another without an npm registry at all. pnpm does this: - instantly - deterministically - without extra copies #### **5. Built-in monorepo support** Workspaces in pnpm are part of the architecture, not an add-on. npm and Yarn historically arrived at this later and less efficiently. --- ### **Summary** In monorepos, pnpm wins thanks to: | Advantage | Why it matters | |---|---| | Cache instead of copies | less space | | Fast installation | saves the team's time | | Dependency isolation | fewer bugs | | Linking packages locally | convenience in development | | Native workspaces | simple setup | **Conclusion:** pnpm scales perfectly in monorepos, which is why it is most often chosen for exactly that architecture.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.