anchor.diff:          | OnExited of (Browser.HTMLElement -> unit)
           | Children of U2<React.ReactElement, TransitionStatus -> React.ReactElement>
           | ClassNames of U2<string, CSSTransitionClassNames>
  -        | Class of string
  +        | [<CompiledName "className">] Class of string
           | Ref of (obj -> obj)
           | Key of string
           static member Custom(key: string, value: obj): CSSTransitionProp =
  
positive.code:     type TransitionGroupProp =
          | Component of React.ReactType
          | ChildFactory of (React.ReactElement -> React.ReactElement)
          | Class of string
          | Ref of (obj -> obj)
          | Key of string
          static member Custom(key: string, value: obj): TransitionGroupProp =
  
negative.code:         | OnExiting of (Browser.HTMLElement -> unit)
          | OnExited of (Browser.HTMLElement -> unit)
          | Children of U2<React.ReactElement, (TransitionStatus -> React.ReactElement)>
          | [<CompiledName "className">] Class of string
          | Ref of (obj -> obj)
          | Key of string
          static member Custom(key: string, value: obj): TransitionProp =
  