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This Yarn Berry plugin checks for unused resolutions in yourpackage.json files after runningyarn install. It will error if any resolutions are defined but not actually used by Yarn.

yarn plugin import https://raw.githubusercontent.com/MaintainX/yarn-plugin-unused-resolutions/refs/tags/v0.1.1/bundles/%40yarnpkg/plugin-unused-resolutions.js

After installing the plugin, runyarn install as usual. The plugin will automatically check for unused resolutions and report any issues.

If you have unused resolutions, you'll see output like this:

Found 2 unused resolution(s):  - "unused-package": "1.0.0"  - "loose-envify/unused@^2.0.0": "4.0.0"These resolutions are defined in package.json but not used by Yarn.Consider removing them to keep your package.json clean.

The plugin hooks into Yarn'sreduceDependency lifecycle event to reproduce the same logic that Yarn uses to resolve dependencies.It adds a flag on the resolutions that are used to alias a dependency.

Then, it hooks into Yarn'safterAllInstalled lifecycle event to check for resolutions that are defined but not used.

• Dependency Pinning: When you pin a dependency version but later remove the dependency
• Security Fixes: When you add a resolution for a security fix but the vulnerable dependency is removed
• Version Conflicts: When you resolve version conflicts that are later resolved differently
• Cleanup: General cleanup of unused resolutions to keep package.json files maintainable

To publish a new version of the plugin:

1. Bump the version inpackage.json
2. Update the installation URL in this README
3. Create a new release on GitHub with the same name as the new version
4. Provide a description of the changes made

MIT