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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 everywhere. Supports Windows, Linux, and macOS.
- Battle-tested. Used in production by teams of all sizes since 2016.
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.
Background
pnpm uses a content-addressable filesystem to store all files from all module directories on a disk. When using npm or Yarn, 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.
Installation
On macOS, Linux, or Windows Subsystem for Linux:
curl -f https://get.pnpm.io/v6.js | node - add --global pnpm
On Windows (using PowerShell):
(Invoke-WebRequest 'https://get.pnpm.io/v6.js' -UseBasicParsing).Content | node - add --global pnpm
Using npm:
npx pnpm add -g pnpm
For other installation options visit our website.
We also ship an experimental new version of pnpm that may be used even with no Node.js installed on the system, see @pnpm/beta.
Usage
Just use pnpm in place of npm/Yarn. E.g., install dependencies via:
pnpm install
Also, pnpx instead of npx:
pnpx create-react-app my-cool-new-app
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:
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