=== tests/cases/compiler/exportDeclarationInInternalModule.ts ===
class Bbb {
>Bbb : Symbol(Bbb, Decl(exportDeclarationInInternalModule.ts, 0, 0), Decl(exportDeclarationInInternalModule.ts, 7, 1))
}

class Aaa extends Bbb { }
>Aaa : Symbol(Aaa, Decl(exportDeclarationInInternalModule.ts, 1, 1), Decl(exportDeclarationInInternalModule.ts, 3, 25))
>Bbb : Symbol(Bbb, Decl(exportDeclarationInInternalModule.ts, 0, 0), Decl(exportDeclarationInInternalModule.ts, 7, 1))

module Aaa {
>Aaa : Symbol(Aaa, Decl(exportDeclarationInInternalModule.ts, 1, 1), Decl(exportDeclarationInInternalModule.ts, 3, 25))

    export class SomeType { }
>SomeType : Symbol(SomeType, Decl(exportDeclarationInInternalModule.ts, 5, 12))
}

module Bbb {
>Bbb : Symbol(Bbb, Decl(exportDeclarationInInternalModule.ts, 0, 0), Decl(exportDeclarationInInternalModule.ts, 7, 1))

    export class SomeType { }
>SomeType : Symbol(SomeType, Decl(exportDeclarationInInternalModule.ts, 9, 12))

    export * from Aaa;      // this line causes the nullref
}

var a: Bbb.SomeType;
>a : Symbol(a, Decl(exportDeclarationInInternalModule.ts, 15, 3))
>Bbb : Symbol(Bbb, Decl(exportDeclarationInInternalModule.ts, 0, 0), Decl(exportDeclarationInInternalModule.ts, 7, 1))
>SomeType : Symbol(Bbb.SomeType, Decl(exportDeclarationInInternalModule.ts, 9, 12))

