Every piece of software has bugs, and squashing them should always be the priority.

If you spotted an incorrect behavior, knowing the following facts will help fixing it:

• What's your input CSS and expected output?
• Do you use clean-css directly or through any of the plugins?
• What options do you pass to clean-css / the plugin?
• What version of clean-css do you use?
• What operating system do you use?

We love pull requests! To contribute to clean-css first fork, then clone the repo:

git clone [email protected]:your-username/clean-css.git

Make sure you have node 6.0+ installed so npm can download all dependencies for you:

npm install

Make sure the tests pass:

npm test

Then add tests for your change. Check if tests fail. Make your change. Make the tests pass.

At the end make sure code styling validation passes:

npm run lint

Finally push to your fork and submit a pull request.

At this point you're waiting for a PR review which should not thake more than a day.

Some things that will increase the chance that your pull request is accepted:

• Write tests.
• Write self-documenting code.
• Squash commits.
• Write a good commit message.