Object interpolation

[curvedmark]

Can we support this kind of syntax:

obj =
    b: 2
{
    a: 1
    obj
    c: 2
}

which will be compiled into something like this:

var _extend = function () { //... }
var obj = { b: 2 };
_extend({ a:1 }, obj, { c:2 });

Nested version:

obj1 =
    b: 2
obj2 =
    e: 5
{
    a: 1
    obj1
    c:
        d: 4
        obj2
}

which will be compiled into:

var _extend = function () { //... }
var obj1 = { b: 2 }, obj2 = { e:5 };
_extend({ a:1 }, obj, { c: _extend({d: 4}, obj2) });

obj doesn't have to be a variable, it can also be a literal (array, object, etc). Is this idea feasible?

I see CS currently compiles this

fn
    a:1
    obj
    b:2

into this

fn({
  a: 1
}, obj, {
  b: 2
});

I'm not sure if it's OK to break this compatibility, but I think it would be really cool if we could "interpolate" into object literals

[michaelficarra]

Duplicate of #1632