This extension adds support for the Firefly programming language (.ff files). It should work out of the box with no configuration, and comes with the following features:
Autocompletion
Go to definition
Find references
Signature help
Symbol renaming
Document and workspace symbols
Show type on hover
Diagnostics*
* Diagnostics don't currently update automatically when included files have been edited. It's disabled for performance reasons, and we're working on a solution.
You can run .ff main files via the usual Run and Debug side panel - just choose create a launch.json file. After that you can also press F5 to run the currently open file.