TypeScript: Formatter deletes comment

[joaomoreno]

const result = Event.any<any>(fromKeydown, fromKeyup,/*  fromMouse */);

1. Format Document

I end up with

const result = Event.any<any>(fromKeydown, fromKeyup);

[mjbvz]

Confirmed on typescript@3.4.0-dev.20190220

[fuafa]

Can a formatter delete non-whitespace character? What is the expected behavior for foo('', )

[TRCYX]

Not completely fixed it seems.

fu(
    5, /*afsd*/);

The formatter still removes comments for the above code. It looks like that the fixing PR #36674 only handles the case where , is on the same line as (, while if ,, the comment, or ) begins a new line, some other mechanism makes the comment stay.

Yes, in reality no one writes code like this, but it still seems wrong.