new syntax for empty dynamic object

As initially proposed in #6571, change the dynamic enumeration expression stuff so that:

dynamic obj = dynamic; //instantiate an empty object
dynamic obj = dynamic []; //instantiate an empty array

[gavinking]

@lucaswerkmeister I find that it offends my aesthetic sense that spreading an empty thing has any effect at all upon the “invocation”.

[gavinking]

is dynamic Object { ... } transformed to new Object()

Well, no, it would do the same thing that dynamic { ... } does right now, i.e. { ... }.

I guess dynamic Array { 1,2,3 } can be transformed to new Array(1,2,3), right?

I would transform it to [1, 2, 3].

And this not a breaking change?

I don’t think so, no.

Extremely verbose though.

That’s true.

Anyway, it’s just something to think about. I don’t see this as a high priority thing to do, not unless we come up with some other useful interpretation of dynamic Foo { ... } for something other new thing in JS.