Inline classes not supported

[mhevery]

function ident(x) { return x; }

var Foo = ident(class Foo {})

Throws:

error TS9003: 'class' expressions are not currently supported.

I believe that is a valid ES6 syntax, and it should work.

[mhegazy]

We are adding the support for class expressions currently. class expressions should be fully supported in 1.6.

[danquirk]

#497 is the main source of discussion