pnpm offers faster installs and better disk usage. Here's why you should consider switching.
Key Benefits
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Content-Addressable Storage
Traditional npm:
project-a/node_modules/lodash/
project-b/node_modules/lodash/
project-c/node_modules/lodash/
# 3 copies of lodash
pnpm:
~/.pnpm-store/
lodash@4.17.21/ # Single copy
project-a/node_modules/.pnpm/lodash@4.17.21
project-b/node_modules/.pnpm/lodash@4.17.21
project-c/node_modules/.pnpm/lodash@4.17.21
# All symlinked to store
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Strict Node Modules
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Common Commands
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Lockfile
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Workspaces (Monorepo)
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Performance Comparison
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Configuration
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Scripts and Hooks
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Overrides and Patches
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CI/CD Setup
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Migration from npm/yarn
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Troubleshooting
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Best Practices
Project Setup:
✓ Add packageManager to package.json
✓ Use preinstall to enforce pnpm
✓ Commit pnpm-lock.yaml
✓ Configure .npmrc for team
Performance:
✓ Use --frozen-lockfile in CI
✓ Enable prefer-offline
✓ Prune store periodically
✓ Use workspace protocol
Monorepos:
✓ Define pnpm-workspace.yaml
✓ Use workspace: protocol
✓ Filter commands appropriately
✓ Share common configurations
Conclusion
pnpm provides faster installs, better disk usage, and stricter dependency management. Its content-addressable store eliminates duplication, while strict mode prevents phantom dependencies. For monorepos, workspace support makes it an excellent choice for managing multiple packages.