Click on a green play button, the IDE will start the debugging and shows values of variables on the left-hand side.
On my system it is in C:\Program Files\PowerShell\7. It was announced at the 2014 online Connect event. Visual studio code powershell debugger not working To test this, I built a quick F# project: PowerShell Test Library, and added the following code: namespace PowerShell_Test_Library type TestClass () = member this.