=== tests/cases/compiler/ambientModules.ts ===
declare module Foo.Bar { export var foo; };
>Foo : typeof Foo, Symbol(Foo, Decl(ambientModules.ts, 0, 0))
>Bar : typeof Bar, Symbol(Bar, Decl(ambientModules.ts, 0, 19))
>foo : any, Symbol(foo, Decl(ambientModules.ts, 0, 35))

Foo.Bar.foo = 5; 
>Foo.Bar.foo = 5 : number
>Foo.Bar.foo : any, Symbol(Foo.Bar.foo, Decl(ambientModules.ts, 0, 35))
>Foo.Bar : typeof Foo.Bar, Symbol(Foo.Bar, Decl(ambientModules.ts, 0, 19))
>Foo : typeof Foo, Symbol(Foo, Decl(ambientModules.ts, 0, 0))
>Bar : typeof Foo.Bar, Symbol(Foo.Bar, Decl(ambientModules.ts, 0, 19))
>foo : any, Symbol(Foo.Bar.foo, Decl(ambientModules.ts, 0, 35))
>5 : number