Valid Workspace:File Extension Combinations

Workspace	Extensions
angularjs	`js`
asp-dotnet	`dotnet`, `cs`, `fs`, `vb`
babel	`js`
babelnode	`js`
c++	`cpp`
dotnet	`dotnet`, `cs`, `fs`, `vb`
golang	`go`, `golang`
java	`java`
mongodb	same as `default`
node	`js`
php	`php`
project	same as `default`, but does not run an HTTP server by default. Avoid when possible
python	`python`, `py2`, `python2`
python3	`py`, `python3`, `py3`
r-static	`r`, `Rmd`
rails	`rb`
ruby	`rb`
sass	same as `default`
sql	`sql`, `sqlite`
static-web	any, but will not "run" code, it will serve files to the Web Browser component
swift	`swift`
typescript	`ts`, `tsx`

Deprecated workspace (do not use)

Workspace	Extensions
codex-python	`python`
codex-ruby	`rb`
default	`cpp`, `dotnet`, `go`, `java`, `js`, `lol`, `py`, `py2`, `php`, `r`, `rb`, `rmd`, `swift`, `golang`, `py3`, `python`, `python2`, `python3`, `cs`, `fs`, `vb`
javascript	`js`
static	same as `default`