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Contributing to AngularJS

We'd love for you to contribute to our source code and to make AngularJS even better than it is today! Here are the guidelines we'd like you to follow:

Code of Conduct

Help us keep AngularJS open and inclusive. Please read and follow our Code of Conduct.

Questions, Bugs, Features

Got a Question or Problem?

Do not open issues for general support questions as we want to keep GitHub issues for bug reports and feature requests. You've got much better chances of getting your question answered on dedicated support platforms, the best being Stack Overflow.

Stack Overflow is a much better place to ask questions since:

  • there are thousands of people willing to help on Stack Overflow
  • questions and answers stay available for public viewing so your question / answer might help someone else
  • Stack Overflow's voting system assures that the best answers are prominently visible.

To save your and our time, we will systematically close all issues that are requests for general support and redirect people to the section you are reading right now.

Other channels for support are:

Found an Issue or Bug?

If you find a bug in the source code, you can help us by submitting an issue to our GitHub Repository. Even better, you can submit a Pull Request with a fix.

Please see the Submission Guidelines below.

Special Note for Localization Issues: AngularJS uses the Google Closure I18N library to generate its own I18N files (the ngLocale module). This means that any changes to these files would be lost the next time that we import the library. Since the Closure library i18n data is itself auto-generated from the data of the Common Locale Data Repository (CLDR) project, errors in the data should be reported there. See also the Closure guide to i18n changes.

Missing a Feature?

You can request a new feature by submitting an issue to our GitHub Repository.

If you would like to implement a new feature then consider what kind of change it is:

Want a Doc Fix?

Should you have a suggestion for the documentation, you can open an issue and outline the problem or improvement you have - however, creating the doc fix yourself is much better!

If you want to help improve the docs, it's a good idea to let others know what you're working on to minimize duplication of effort. Create a new issue (or comment on a related existing one) to let others know what you're working on.

If you're making a small change (typo, phrasing) don't worry about filing an issue first. Use the friendly blue "Improve this doc" button at the top right of the doc page to fork the repository in-place and make a quick change on the fly. The commit message is preformatted to the right type and scope, so you only have to add the description.

For large fixes, please build and test the documentation before submitting the PR to be sure you haven't accidentally introduced any layout or formatting issues. You should also make sure that your commit message follows the Commit Message Guidelines.

Issue Submission Guidelines

Before you submit your issue search the archive, maybe your question was already answered.

If your issue appears to be a bug, and hasn't been reported, open a new issue. Help us to maximize the effort we can spend fixing issues and adding new features, by not reporting duplicate issues.

The "new issue" form contains a number of prompts that you should fill out to make it easier to understand and categorize the issue.

In general, providing the following information will increase the chances of your issue being dealt with quickly:

  • Overview of the Issue - if an error is being thrown a non-minified stack trace helps
  • Motivation for or Use Case - explain why this is a bug for you
  • AngularJS Version(s) - is it a regression?
  • Browsers and Operating System - is this a problem with all browsers or only specific ones?
  • Reproduce the Error - provide a live example (using Plunker or JSFiddle) or an unambiguous set of steps.
  • Related Issues - has a similar issue been reported before?
  • Suggest a Fix - if you can't fix the bug yourself, perhaps you can point to what might be causing the problem (line of code or commit)

Here is a great example of a well defined issue: #5069.

If you get help, help others. Good karma rulez!

Pull Request Submission Guidelines

Before you submit your pull request consider the following guidelines:

  • Search GitHub for an open or closed Pull Request that relates to your submission. You don't want to duplicate effort.

  • Create the development environment

  • Make your changes in a new git branch:

    git checkout -b my-fix-branch master
  • Create your patch commit, including appropriate test cases.

  • Follow our Coding Rules.

  • If the changes affect public APIs, change or add relevant documentation.

  • Run the AngularJS unit and E2E test suites, and ensure that all tests pass. It is generally sufficient to run the tests only on Chrome, as our continuous integration test will run the tests on additional browsers.

  • Run yarn grunt eslint to check that you have followed the automatically enforced coding rules

  • Commit your changes using a descriptive commit message that follows our commit message conventions. Adherence to the commit message conventions is required, because release notes are automatically generated from these messages.

    git commit -a

    Note: the optional commit -a command line option will automatically "add" and "rm" edited files.

  • Before creating the Pull Request, package and run all tests a last time:

    yarn grunt test
  • Push your branch to GitHub:

    git push origin my-fix-branch
  • In GitHub, send a pull request to angular.js:master. This will trigger the check of the Contributor License Agreement and the continuous integration tests.

  • If you find that the continuous integration tests have failed, look into the logs to find out if your changes caused test failures, the commit message was malformed etc. If you find that the tests failed or times out for unrelated reasons, you can ping a team member so that the build can be restarted.

  • If we suggest changes, then:

    • Make the required updates.

    • Re-run the AngularJS test suite to ensure tests are still passing.

    • Commit your changes to your branch (e.g. my-fix-branch).

    • Push the changes to your GitHub repository (this will update your Pull Request).

      You can also amend the initial commits and force push them to the branch.

      git rebase master -i
      git push origin my-fix-branch -f

      This is generally easier to follow, but separate commits are useful if the Pull Request contains iterations that might be interesting to see side-by-side.

That's it! Thank you for your contribution!

After your pull request is merged

After your pull request is merged, you can safely delete your branch and pull the changes from the main (upstream) repository:

  • Delete the remote branch on GitHub either through the GitHub web UI or your local shell as follows:

    git push origin --delete my-fix-branch
  • Check out the master branch:

    git checkout master -f
  • Delete the local branch:

    git branch -D my-fix-branch
  • Update your master with the latest upstream version:

    git pull --ff upstream master

Signing the Contributor License Agreement (CLA)

Upon submmitting a Pull Request, a friendly bot will ask you to sign our CLA if you haven't done so before. Unfortunately, this is necessary for documentation changes, too. It's a quick process, we promise!