Module local renaming does not take into account block scoped locals

[JsonFreeman]

Compile the following in ES6:

module M {
    export class C { }
}
module M {
    {
        let M = 0;
        new C();
    }
}

The output you get will cause a crash:

var M;
(function (M) {
    class C {
    }
    M.C = C;
})(M || (M = {}));
var M;
(function (M) { // Should be renamed to M_1
    {
        let M = 0;
        new M.C(); // Emits M.C instead of M_1.C
    }
})(M || (M = {}));

This does not repro in pre-ES6 emit

[JsonFreeman]

@CyrusNajmabadi may be working on a fix for this

[vladima]

reassigning to @CyrusNajmabadi