Turns out # javascript does a good job of syntax highlighting for Power Fx.
In order to support # powerfx through this extension, I added powerfx but just use the same syntax highlighting as javascript. The result looks like.
As I find any nuances that warrant Power Fx specific formatting, I can contribute more. But, for now, this seemed to do the trick.
Closes #17
Turns out
In order to support 
As I find any nuances that warrant Power Fx specific formatting, I can contribute more. But, for now, this seemed to do the trick.
# javascriptdoes a good job of syntax highlighting for Power Fx.# powerfxthrough this extension, I addedpowerfxbut just use the same syntax highlighting asjavascript. The result looks like.