==== tests/cases/compiler/callOverloads3.ts (5 errors) ====
    
    function Foo():Foo;
                   ~~~
!!! Cannot find name 'Foo'.
    function Foo(s:string):Foo;
             ~~~
!!! Function implementation is missing or not immediately following the declaration.
                           ~~~
!!! Cannot find name 'Foo'.
    class Foo {    
          ~~~
!!! Duplicate identifier 'Foo'.
        bar1() { /*WScript.Echo("bar1");*/ }
        constructor(x: any) {
            // WScript.Echo("Constructor function has executed");
        }
    }
    //class Foo(s: String);
    
    var f1 = new Foo("hey");
             ~~~~~~~~~~~~~~
!!! Only a void function can be called with the 'new' keyword.
    
    
    f1.bar1();
    Foo();
    Foo("s");