If you're using private registries (like verdaccio) in your work environment you probably don't want to fetch
dependencies from the official one. This tools verifies that no dependency in your project is fetched from
Use this command from a root directory of a project to be verified:
$ npx no-official-npm-registry
You will receive non-zero exit code if any dependency in your lockfile (or npm-shrinkwrap.json) is resolved from official npm registry.
Also you can install this tool globally with
npm install --global no-official-npm-registry
If installed globally,
no-official-npm-registry will be available as a CLI command.
You can check against different registry by defining
NPM_UNWANTED_REGISTRY environment variable.