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![](https://i.imgur.com/qlW1eEG.png)
Fast, disk space efficient package manager:
- Fast. Up to 2x faster than the alternatives (see benchmark).
- Efficient. Files inside
node_modules
are linked from a single content-addressable storage. - Great for monorepos.
- Strict. A package can access only dependencies that are specified in its
package.json
. - Deterministic. Has a lockfile called
pnpm-lock.yaml
. - Works as a Node.js version manager. See pnpm env use.
- Works everywhere. Supports Windows, Linux, and macOS.
- Battle-tested. Used in production by teams of all sizes since 2016.
- See the full feature comparison with npm and Yarn.
To quote the Rush team:
Microsoft uses pnpm in Rush repos with hundreds of projects and hundreds of PRs per day, and we’ve found it to be very fast and reliable.
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Support this project by becoming a sponsor.
Background
pnpm uses a content-addressable filesystem to store all files from all module directories on a disk.
When using npm, if you have 100 projects using lodash, you will have 100 copies of lodash on disk.
With pnpm, lodash will be stored in a content-addressable storage, so:
- If you depend on different versions of lodash, only the files that differ are added to the store.
If lodash has 100 files, and a new version has a change only in one of those files,
pnpm update
will only add 1 new file to the storage. - All the files are saved in a single place on the disk. When packages are installed, their files are linked
from that single place consuming no additional disk space. Linking is performed using either hard-links or reflinks (copy-on-write).
As a result, you save gigabytes of space on your disk and you have a lot faster installations!
If you'd like more details about the unique node_modules
structure that pnpm creates and
why it works fine with the Node.js ecosystem, read this small article: Flat node_modules is not the only way.
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Installation
For installation options visit our website.
Usage
Just use pnpm in place of npm/Yarn. E.g., install dependencies via:
pnpm install
For more advanced usage, read pnpm CLI on our website, or run pnpm help
.
Benchmark
pnpm is up to 2x faster than npm and Yarn classic. See all benchmarks here.
Benchmarks on an app with lots of dependencies:
![](https://pnpm.io/img/benchmarks/alotta-files.svg)
Support
Backers
Thank you to all our backers! Become a backer
![](https://opencollective.com/pnpm/backers.svg?width=890)
Contributors
This project exists thanks to all the people who contribute. Contribute.
![](https://opencollective.com/pnpm/contributors.svg?width=890&button=false)
License
MIT