anchor.diff:          let eventType =
               getEventTypeInInterface eHandler.EventName i.Name
           Pt.printl
  -            "%saddEventListener(type: \"%s\", listener: (%s, ev: %s) => any, useCapture?: boolean): void;"
  -            prefix eHandler.EventName (EmitEventHandlerThis (flavor, prefix)) eventType
  +            "%saddEventListener(type: \"%s\", listener: (%sev: %s) => any, useCapture?: boolean): void;"
  +            prefix eHandler.EventName (EmitEventHandlerThis flavor prefix) eventType
   
       let fPrefix = if prefix.StartsWith "declare var" then "declare function " else ""
   
  
positive.code:                                 getEventTypeInInterface p.EventHandler.Value i.Name
                              else 
                                  "Event"
                          String.Format("({0}, ev: {1}) => any", EmitEventHandlerThis(flavor, prefix), eType)
                      | _ -> DomTypeToTsType p.Type
                  let pTypeAndNull = if p.Nullable.IsSome then makeNullable pType else pType
                  let readOnlyModifier = if p.ReadOnly.IsSome && prefix = "" then "readonly " else ""
  
negative.code:     let emitEnum (e: Browser.Enum) = Pt.printl "declare var %s: string;" e.Name
      browser.Enums |> Array.iter emitEnum
  
  let EmitEventHandlerThis flavor (prefix: string) =
      if prefix = "" then "this: this, "
      else match GetGlobalPollutor flavor with
           | Some pollutor -> "this: " + pollutor.Name + ", "
           | _ -> ""
  
  let EmitProperties flavor prefix (emitScope: EmitScope) (i: Browser.Interface)=
      let emitPropertyFromJson (p: ItemsType.Root) =
  