Current Behavior:

My application has a nested dependency (3 levels deep) of a public package using the peerDependenciesMeta to mark peerDependencies as optional.

When running npm find-dupes I get the following error:

npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
...
npm ERR! Could not resolve dependency:
npm ERR! peerOptional type-fest@"^0.13.1" from @pmmmwh/react-refresh-webpack-plugin@0.4.3
npm ERR! node_modules/@pmmmwh/react-refresh-webpack-plugin

• Nested dependency included is https://www.npmjs.com/package/@pmmmwh/react-refresh-webpack-plugin/v/latest
• Unresolved (optional) dependency is https://www.npmjs.com/package/type-fest

Expected Behavior:

Not get an error

Steps To Reproduce:

run npm find-dupes on something with uninstalled optional dependencies

(I could make a test repo if you need one?)

Environment:

• OS: MacOs Catalina
• Node: 15.3.0
• npm: 7.0.14