==== tests/cases/compiler/targetTypeVoidFunc.ts (1 errors) ====
    function f1(): { new (): number; } {
        return function () { return; }
               ~~~~~~~~~~~~~~~~~~~~~~~
!!! targetTypeVoidFunc.ts(2,12): error TS2012: Cannot convert '() => void' to 'new() => number':
!!! 	Type 'new() => number' requires a construct signature, but type '() => void' lacks one.
    }; 
    
    var x = f1();
    var y = new x();
    var z = new (f1())();