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Package manager › Manage and inspect dependencies

Manage and inspect dependencies

Add, remove, update and explain installed packages.

Change dependencies

Terminal window
fnpm add react@19
fnpm add --dev typescript
fnpm remove react
fnpm update
fnpm outdated

Inspect the manifest and lock diff after changes. install <package> is accepted as an add form; add makes the intent explicit.

Explain a dependency graph

Terminal window
fnpm why typescript
fnpm ls
fnpm info typescript
fnpm-lock why typescript

The fnpm pm subcommands follow Bun’s: pm pkg, pm version, pm ls, pm why, pm view, pm licenses, pm fetch, pm diff, pm trust / pm untrusted, pm cache and pm audit (with audit fix).

fnpm why explains dependency paths in the project. fnpm-lock why reads the lockfile graph. info queries package information from the configured registry.

Overrides, extensions and patches

fnpm includes overrides/resolutions, package extensions, patch and patch-commit. These affect resolution or installed files and should be reviewed with the lockfile. Use the current command’s help before creating a patch; preserve generated patch files in version control with their manifest reference.

Terminal window
fnpm patch --help
fnpm patch-commit --help
fnpm dedupe --help
fnpm prune --help

Compatibility work for complex peer graphs and migration edge cases continues in the parity inventory. Test the actual consumers of changed packages.