Start the project:
deno task start
This will watch the project directory and restart as necessary.
Boostrap 5.2 is included and loaded by plugin, but is only compiled when the bootstrap task is run:
deno task bootstrap
You will need sass installed, brew install sass/sass/sass works for macOS
The sass compliation doesn't work on Deno Deploy. This is just a plaything, use at your own risk.
If you can figure out a good way to use SASS with Fresh, let me know!