tldr/pages/common/npm-find-dupes.md

# npm find-dupes

> Identify duplicate dependencies in `node_modules`.
> More information: <https://docs.npmjs.com/cli/commands/npm-find-dupes>.

- List all duplicate packages within `node_modules`:

`npm find-dupes`

- Include `devDependencies` in duplicate detection:

`npm find-dupes --include dev`

- List all duplicate instances of a specific package in `node-modules`:

`npm find-dupes {{package_name}}`

- Exclude optional dependencies from duplicate detection:

`npm find-dupes --omit optional`

- Set the logging level for output:

`npm find-dupes --loglevel {{silent|error|warn|info|verbose}}`

- Output duplicate information in JSON format:

`npm find-dupes --json`

- Limit duplicate search to specific scopes:

`npm find-dupes --scope {{@scope1,@scope2}}`

- Exclude specific scopes from duplicate detection:

`npm find-dupes --omit-scope {{@scope1,@scope2}}`