When I build a Typescript project, I have no indication that the build task was completed (besides that when I try to repeat the build and it is still running, I get a warning:

> 
> There is an active running task right now. Terminate it first before executing another task.
> 
> 
> 

There doesn't seem to be any change in the UI, and nothing in the Output pane.

How can I know whether a task is currently running in Visual Studio Code?