Watch task indicator

[normalser]

One more request that would go great with: #8509
Ability to see that there is active watch task running.
Maybe in the footer here:

[dbaeumer]

Nice idea.

[normalser]

@bgashler1 Not sure if this was on purpose - but shouldn't that notes be added to #9506 and this task should stay open so it can be implemented ?

[isidorn]

@wallverb yes, this was done by accident, @bgashler1 please move the notes to the ux meeting issue

[bgashler1]

Sorry, I had the wrong tab opened in Safari when I copied this. My mistake :)

[normalser]

Sometimes watch task dies and there is no indication to user that it is not running anymore

Here is example of typescript bug that killed watch task silently:

9:53:09 AM - Compilation complete. Watching for file changes.

The task 'tsc' was terminated per user request.
/Users/user/.nvm/versions/node/v4.2.2/lib/node_modules/typescript/lib/tsc.js:37610
                throw e;
                ^
TypeError: Cannot read property 'decorators' of undefined
    at getStartPos (/Users/user/.nvm/versions/node/v4.2.2/lib/node_modules/typescript/lib/tsc.js:28667:45)
    at emitStart (/Users/user/.nvm/versions/node/v4.2.2/lib/node_modules/typescript/lib/tsc.js:28671:21)

[dbaeumer]

There are now two indications in the status bar:

• the number of running tasks (both watch and non watch)
• a Building... indication when a build task is active

There are not further improvements planned here. If you think the current support is not enough please open a new issue explaining what can be improved.