Returns json with:

{
    [duplicatedPackageName]: [
        ...
        {
            parent: parentPackageNameWhereIdDuplicated,
            version: versionOfDuplicatedPackageInParentPackage
        },
    ],
}

How to use

npx --yes custom-npm-dedup
ONLYP='@deep' IGNOREP='["@deep-foundation/deeplinks"]' npx --yes custom-npm-dedup

Envs

ONLYP='@deep' # ignore duplicated packages in parents names not contains substring @deep
IGNOREP='["@deep-foundation/deeplinks"]' # full ignore parent names