==== tests/cases/compiler/fatarrowfunctionsErrors.ts (18 errors) ====
    foo((...Far:any[])=>{return 0;})
    ~~~
!!! Cannot find name 'foo'.
    foo((1)=>{return 0;}); 
           ~~
!!! ',' expected.
                     ~
!!! ':' expected.
                      ~
!!! ',' expected.
                       ~
!!! Declaration or statement expected.
                        ~
!!! Declaration or statement expected.
    ~~~
!!! Cannot find name 'foo'.
    foo((x?)=>{return x;})
    ~~~
!!! Cannot find name 'foo'.
    foo((x=0)=>{return x;})
    ~~~
!!! Cannot find name 'foo'.
    var y = x:number => x*x;
             ~
!!! ',' expected.
                     ~~
!!! ';' expected.
            ~
!!! Cannot find name 'x'.
                        ~
!!! Cannot find name 'x'.
                          ~
!!! Cannot find name 'x'.
    false? (() => null): null;
    
    // missing fatarrow
    var x1 = () :void {};
                      ~
!!! '=>' expected.
    var x2 = (a:number) :void {};
                              ~
!!! '=>' expected.
    var x3 = (a:number) {};
                        ~
!!! '=>' expected.
    var x4= (...a: any[]) { };
                          ~
!!! '=>' expected.