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Pnpm

Pnpm is a fast, disk space-efficient package manager. Unlike npm and yarn, pnpm uses symbolic links to create a nested structure of dependencies.

Project Discovery

Find files named pnpm-lock.yaml with a corresponding package.json file.

Analysis

Only pnpm-lock.yaml is used for analysis. CLI will parse and use the following fields. in pnpm-lock.yaml to analyze the dependency graph.

  • importers

    • [importersKey]
      • dependencies: list of direct dependencies
      • devDependencies: list of development dependencies

  • packages

    • [packagesKey]
      • resolution: infer git URL, git commit, or package source URL.
      • dependencies: list of transitive dependencies
      • peerDependencies: list of peer dependencies (will be treated like any other dependency)
      • dev: to infer if this is used dependency or not. If the value is true by default CLI will not include this in the final analysis.

An example is provided below:

lockfileVersion: 5.4

importers:
  .:
    specifiers:
      some-pkg: https://some-url/pkg.tar.gz
      react: '*'
      my-local-pkg: file:../libs/my-local-pkg 
    dependencies:
      some-pkg: '@some-url/pkg.tar.gz'
      my-local-pkg: file:../libs/my-local-pkg
    devDependencies:
      react: 18.1.0

  # workspace project in packages/some-ws-pkg directory from root.
  packages/some-ws-pkg: 
    specifiers:
      commander: 9.2.0
    dependencies:
      commander: 9.2.0

packages:
    '@some-url/pkg.tar.gz':
        resolution: {tarball: https://some-url/pkg.tar.gz}
        name: some-pkg
        version: 1.0.0
        engines: {node: '>=4.0.0'}
        dev: false

    file:../libs/my-local-pkg:
        resolution: {directory: "../libs/my-local-pkg", type: directory}
        name: unifier
        version: 1.0.0
        dependencies:
            loose-envify: 1.4.0
        engines: {node: '>=4.0.0'}
        dev: false

    /commander/9.2.0:
        resolution: {integrity: sha512-e2i4wANQiSXgnrBlIatyHtP1odfUp0BbV5Y5nEGbxtIrStkEOAAzCUirvLBNXHLr7kwLvJl6V+4V3XV9x7Wd9w==}
        engines: {node: ^12.20.0 || >=14}
        dev: false

    /react/18.1.0:
        resolution: {integrity: sha512-4oL8ivCz5ZEPyclFQXaNksK3adutVS8l2xzZU0cqEFrE9Sb7fC0EFK5uEk74wIreL1DERyjvsU915j1pcT2uEQ==}
        engines: {node: '>=0.10.0'}
        dependencies:
            loose-envify: 1.4.0
        dev: true

    /loose-envify/1.4.0:
        resolution: {integrity: sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==}
        hasBin: true
        dependencies:
            js-tokens: 4.0.0
        dev: false

    /js-tokens/4.0.0:
        resolution: {integrity: sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==}
        dev: true
  • If the dependency was resolved using git (resolution will have type: git attribute), FOSSA will use provided repo and commit attribute to analyze this dependency.
    # FOSSA will use `commit` and `repo` to analyze the this dependency.
    github.com/Marak/colors.js/6bc50e79eeaa1d87369bb3e7e608ebed18c5cf26:
      resolution: {commit: 6bc50e79eeaa1d87369bb3e7e608ebed18c5cf26, repo: git+ssh://[email protected]/Marak/colors.js, type: git}
      name: colors
      version: 1.4.44-liberty-2
      engines: {node: '>=0.1.90'}
      dev: false
  • If the dependency was resolved using tarball (resolution will have tarball attribute) FOSSA will use provided URL address to download and analyze this dependency.
    # FOSSA will analyze lodash from the tarball URL.
    '@some-url/pkg.tar.gz':
        resolution: {tarball: https://some-url/pkg.tar.gz}
        name: some-pkg
        version: 1.0.0
        engines: {node: '>=4.0.0'}
        dev: false
  • If the dependency was resolved using the local directory (resolution will have the type: directory attribute), FOSSA will not analyze this dependency. Local dependency's transitive dependencies will be analyzed, and they will be promoted in place of local dependency.
    # FOSSA will not analyze this dependency, 
    # But FOSSA will analyze its transitive dependency (if they are not sourced from the local directory)
    #
    # FOSSA will promote loose-envify of 1.4.0 in place of unifier.
    file:../libs/my-local-pkg:
        resolution: {directory: "../libs/my-local-pkg", type: directory}
        name: unifier
        version: 1.0.0
        dependencies:
            loose-envify: 1.4.0
        engines: {node: '>=4.0.0'}
        dev: false
  • If the dependency was resolved using registry resolver, FOSSA will use the registry to analyze the dependency. CLI will infer the package name and version using /${dependencyName}/${dependencyVersion} scheme from the package's key.
    # Resolves to npm dependency: commander with 9.2.0 version
    /commander/9.2.0:
        resolution: {integrity: sha512-e2i4wANQiSXgnrBlIatyHtP1odfUp0BbV5Y5nEGbxtIrStkEOAAzCUirvLBNXHLr7kwLvJl6V+4V3XV9x7Wd9w==}
        engines: {node: ^12.20.0 || >=14}
        dev: false
  • Peer dependencies will be included in the analysis (they are treated like any other dependency).
  • Pnpm workspaces are supported.
  • Development dependencies (dev: true) are ignored by default from analysis. To include them in the analysis, execute CLI with --include-unused flag e.g. fossa analyze --include-unused.
  • Optional dependencies are included in the analysis by default. They can be ignored in FOSSA UI.

F.A.Q

How do I perform analysis only for pnpm projects?

You can explicitly specify an analysis target in .fossa.yml file. The example below will exclude all analysis targets except for pnpm.

# .fossa.yml 

version: 3
targets:
  only:
    - type: pnpm