==== tests/cases/compiler/funduleSplitAcrossFiles_function.ts (0 errors) ====
    function D() { }
    
==== tests/cases/compiler/funduleSplitAcrossFiles_module.ts (1 errors) ====
    module D {
           ~
!!! funduleSplitAcrossFiles_module.ts(1,8): error TS2188: Module 'D' cannot merge with previous declaration of 'D' in a different file 'funduleSplitAcrossFiles_function.ts'.
        export var y = "hi";
    }
    D.y;