Want to contribute? Great!
- First, read this page (including the small print at the end).
- Second, please make pull requests against develop, not master. If your patch needs to go into master immediately, include a note in your PR.
For more information on style guide and other details, head over to the Blockly Developers site.
Before we can use your code, you must sign the Google Individual Contributor License Agreement (CLA), which you can do online. The CLA is necessary mainly because you own the copyright to your changes, even after your contribution becomes part of our codebase, so we need your permission to use and distribute your code. We also need to be sure of various other things—for instance that you'll tell us if you know that your code infringes on other people's patents. You don't have to sign the CLA until after you've submitted your code for review and a member has approved it, but you must do it before we can put your code into our codebase.
Before you start working on a larger contribution, you should get in touch with us first through the issue tracker with your idea so that we can help out and possibly guide you. Coordinating up front makes it much easier to avoid frustration later on.
All submissions, including submissions by project members, require review. We use Github pull requests for this purpose.
We care strongly about making Blockly work on all browsers. As of 2017 we support IE 10 and 11, Edge, Chrome, Safari, and Firefox. We will not accept changes that only work on a subset of those browsers. You can check caniuse.com for compatibility information.
Contributions made by corporations are covered by a different agreement than the one above, the Software Grant and Corporate Contributor License Agreement.