ed54cccc6f
Filter pacquet's default reporter summary inputs by the active prefix for non-global installs, matching the TypeScript reporter behavior. Pacquet was folding every importer into the root summary, so workspace installs printed child importer dependencies in the root summary. Keep summaries unfiltered for commands whose install events intentionally come from another prefix: global add/remove/update/runtime and the cache-backed dlx/create flows. Preserve package-manifest diff summaries by tracking manifest snapshots per prefix, emitting the pre-mutation manifest for add/remove/update, and rendering a later non-empty manifest diff when lockfile-only flows emit updated manifests after the install summary marker. Keep the public reporter stream to one initial package-manifest event and one install-closing `pnpm:summary` event, and normalize equivalent prefix paths lexically so relative or trailing-separator variants are not dropped. Add focused reporter tests plus CLI regressions for workspace root summaries, dlx/create append-only summaries, workspace subdirectory add --lockfile-only, single-initial/single-summary NDJSON output, and normalized prefix matching.
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Fast, disk space efficient package manager:
- Fast. Up to 2x faster than the alternatives (see benchmark).
- Efficient. Files inside
node_modulesare 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.
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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 updatewill 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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Getting Started
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.