NPM: Why is this package installed?
Use npm ls
to list installed packages and see the dependency graph of a given package eg:
> npm ls core-js
my_module /path/to/my_module>
└─┬ [email protected]
└─┬ [email protected]
└─┬ [email protected]
└─┬ [email protected]
└─┬ [email protected]
└── [email protected]
npm explain <package name>
is what you're looking for. It explains why a package is in your node_modules folder by showing a "bottoms up" view. See docs here
As you mention, npm ls
shows packages and their dependencies:
> npm ls leveldown
[email protected] C:\Users\mikem\Code\appless
`-- @architect/[email protected]
`-- [email protected]
`-- UNMET OPTIONAL DEPENDENCY [email protected]
If npm ls
shows it at the top level, and it is not a dependency in the top level package.json
, it's likely was previously required and is now no longer used.
Use npm prune
to remove the unused package.