Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.

For maintainers only:

• This needs to be documented (issue in webpack/webpack.js.org will be filed when merged)
• This needs to be backported to webpack 4 (issue will be created when merged)

It looks like this Pull Request doesn't include enough test cases (based on Code Coverage analysis of the PR diff).

A PR need to be covered by tests if you add a new feature (we want to make sure that your feature is working) or if you fix a bug (we want to make sure that we don't run into a regression in future).

@jasonwilliams Please check if this is appliable to your PR and if you can add more test cases.

Read the test readme for details how to write test cases.

@sokra do I need to do anything about that message?

Thanks