tests/cases/compiler/MemberAccessorDeclaration15.ts(2,8): error TS1056: Accessors are only available when targeting ECMAScript 5 and higher.
tests/cases/compiler/MemberAccessorDeclaration15.ts(2,12): error TS2369: A parameter property is only allowed in a constructor implementation.


==== tests/cases/compiler/MemberAccessorDeclaration15.ts (2 errors) ====
    class C {
       set Foo(public a: number) { }
           ~~~
!!! error TS1056: Accessors are only available when targeting ECMAScript 5 and higher.
               ~~~~~~~~~~~~~~~~
!!! error TS2369: A parameter property is only allowed in a constructor implementation.
    }