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Contributing Guidelines

Welcome, and thanks in advance for your help! Please follow these simple guidelines 👍

How to contribute to Serverless

When you propose a new feature or bug fix

Note: Please make sure to write an issue first and get enough feedback before jumping into a Pull Request!

  • Please make sure there is an open issue discussing your contribution
  • If there isn't, please open an issue so we can talk about it before you invest time into the implementation
  • When creating an issue follow the guide that GitHub shows so we have enough information about your proposal

When you want to work on an existing issue

Note: Please write a quick comment in the corresponding issue and ask if the feature is still relevant and that you want to jump into the implementation.

Check out our help-wanted or easy-pick labels to find issues we want to move forward on with your help.

Reviewing Pull Requests

Another really useful way to contribute to Serverless is to review other peoples Pull Requests. Having feedback from multiple people is really helpful and reduces the overall time to make a final decision about the Pull Request.

Writing / improving documentation

Our documentation lives on GitHub in the docs directory. Do you see a typo or other ways to improve it? Feel free to edit it and submit a Pull Request!

Providing support

The easiest thing you can do to help us move forward and make an impact on our progress is to simply provide support to other people having difficulties with their Serverless projects.

You can do that by replying to issues on Github, chatting with other community members in our Chat or helping with questions in our Forum.

Code Style

We aim for clean, consistent code style. We're using ESlint to check for codestyle issues using the Airbnb preset (you can run npm run lint to lint your code).

To help reduce the effort of creating contributions with this style, an .editorconfig file is provided that your editor may use to override any conflicting global defaults and automate a subset of the style settings.

Testing

We aim for a (near) 100% test coverage, so make sure your tests cover as much of your code as possible.

Test coverage

During development, you can easily check coverage by running npm test, then opening the index.html file inside the coverage directory.

Please follow these Testing guidelines when writing your unit tests:

  • Include a top-level describe('ClassName') block, with the name of the class you are testing
  • Inside that top-level describe() block, create another describe('#methodOne()') block for each class method you might create or modify
  • For each method, include an it('should do something') test case for each logical edge case in your changes
  • As you write tests, check the code coverage and make sure all lines of code are covered. If not, just add more test cases until everything is covered
  • For reference and inspiration, please check our tests directory

Testing templates

If you add a new template or want to test a template after changing it you can run the template integration tests. Make sure you have docker and docker-compose installed as they are required. The docker containers we're using through compose are automatically including your $HOME/.aws folder so you can deploy to AWS.

To run all integration tests run:

./tests/templates/test_all_templates

To run only a specific integration test run:

tests/templates/integration-test-template TEMPLATE_NAME BUILD_COMMAND

so for example:

tests/templates/integration-test-template aws-java-maven mvn package

If you add a new template make sure to add it to the test_all_templates file and configure the docker-compose.yml file for your template.

Our Code of Conduct

Finally, to make sure you have a pleasant experience while being in our welcoming community, please read our code of conduct. It outlines our core values and believes and will make working together a happier experience.

Thanks again for being a contributor to the Serverless Community 🎉!

Cheers,

The ⚡ Serverless Team