Diglett

Diglett is a command line tool that helps you detect packages with multiple versions in your JavaScript project. It is particularly useful for frontend apps where you want to keep the bundle size down.

Usage

By default diglett will ignore packages not imported by dependencies defined in the dependencies field of your package.json. If duplicate resolved packages found it will exit with code 1 and output the resolved versions:

Found 1 duplicate dependency
@material/animation with versions 3.1.0, 4.0.0.

npm projects

npx diglett npm <optional path to project>

Yarn projects

npx diglett yarn <optional path to project>

Supports both yarn v1 and yarn berry.

Yarn workspaces

npx diglett yarn-workspace <optional path to project> [--package <package name>]

By default all workspace packages are analyzed. If you just want to analyze one, pass the --package option with the package name – not folder name. It's possible to pass the --package option multiple times to analyze multiple packages.

Supports both yarn v1 and yarn berry.

General options

Name	Description	Default
`--filter <regex>`	Ignores packages except those matching the regular expression.	None
`--all`	Checks all packages defined in `package.json`.	false
`--dev`	Also checks packages in the `devDependencies` field.	false
`--optional`	Also checks packages in the `optionalDependencies` field.	false
`--peer`	Also checks packages in the `peerDependencies` field.	false

Prior work

yarn-deduplicate

oblador/diglett