tests/cases/conformance/parser/ecmascript5/MemberAccessorDeclarations/parserMemberAccessorDeclaration15.ts(2,8): error TS2369: A parameter property is only allowed in a constructor implementation. tests/cases/conformance/parser/ecmascript5/MemberAccessorDeclarations/parserMemberAccessorDeclaration15.ts(2,12): error TS2369: A parameter property is only allowed in a constructor implementation. ==== tests/cases/conformance/parser/ecmascript5/MemberAccessorDeclarations/parserMemberAccessorDeclaration15.ts (2 errors) ==== class C { set Foo(public a: number) { } ~~~ !!! error TS2369: A parameter property is only allowed in a constructor implementation. ~~~~~~~~~~~~~~~~ !!! error TS2369: A parameter property is only allowed in a constructor implementation. }