Tests: Use NPM CI for Tests

[evenstensberg]

Do you want to request a feature or report a bug?

feature

What is the current behavior?

In our tests ( appveyor and travis ), we're using npm and not npm ci.

If the current behavior is a bug, please provide the steps to reproduce.

NPM CI is a version of npm that runs on the CI ( faster ), which will increase feedback loop.

These are the files you are most likely to revise:

• https://github.com/webpack/webpack-cli/blob/master/.appveyor.yml
• https://github.com/webpack/webpack-cli/blob/master/.travis.yml

Relevant Resources

• https://medium.com/@tomastrajan/how-to-speed-up-continuous-integration-build-with-new-npm-ci-and-package-lock-json-7647f91751a
• http://blog.npmjs.org/post/171556855892/introducing-npm-ci-for-faster-more-reliable
• http://blog.npmjs.org/post/171139955345/v570

What is the expected behavior?

Faster builds on integration, unit and relevant tests.

If this is a feature request, what is motivation or use case for changing the behavior?

Performance

Important

This issue is reserved for first time contributors.

Happy hacking 🎉

[FadySamirSadek]

I would love to pick this one up

[ematipico]

Can be closed. Thanks @FadySamirSadek !