=== tests/cases/compiler/moduleScopingBug.ts ===
module M
>M : typeof M

{

    var outer: number;
>outer : number

    function f() {
>f : () => void

        var inner = outer;   // Ok
>inner : number
>outer : number

    }

    class C {
>C : C

        constructor() {
            var inner = outer;   // Ok
>inner : number
>outer : number
        }

    }

    module X {
>X : typeof X

        var inner = outer;   // Error: outer not visible
>inner : number
>outer : number

    }

}