- Submit bugs, issues and patches to the Haxe issue list.
- Work on Development of a compilation target for Haxe
If you want to make some changes to Haxe you can first discuss them on the mailing list
The source code for the haxe compiler is in Github:
git clone https://github.com/HaxeFoundation/haxe.git
Make your branch, prepare your changes, and make a pull request on GitHub.