pnpm / pnpm

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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 runtime.
* **Works everywhere.** Supports Windows, Linux, and macOS.
* **Battle-tested.** Used in production by teams of all sizes since 2016.
* **Experimental Rust port.** Includes pacquet, an experimental port of the CLI written in Rust.
* 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.
## Platinum Sponsors
## Gold Sponsors
## Silver Sponsors
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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:
1. 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.
1. 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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## Getting Started
- Installation
- Usage
- Frequently Asked Questions
- X
- Bluesky
- Discord
## Benchmark
pnpm is up to 2x faster than npm and Yarn classic. See all benchmarks here.
Benchmarks on an app with lots of dependencies:
## License
MIT, except the `pnpr/` directory, which is source-available under the PolyForm Shield License 1.0.0.