If you try casting an object which is not a CustomVO, you’ll get null. I assume you are casting an object from JSON as a VO for type safety.
You can generally turn off as coercions for runtime so it won’t do that (something I generally do unless I actually want those coercions to save cycles at runtime). But doing so might cause weird minification issues. I’d suggest actually converting those objects into proper VOs. Something like this: function CustomVO(obj:Object){ this.prop1 = obj.prop1 this.prop2 = obj.prop2 etc... } I generally wrap the functionality of converting JSON in some kind of helper class so as soon as you get notification of a JSON response, it’s already converted. HTH, Harbs > On Apr 21, 2021, at 2:24 AM, gbarbosa <gbarbosa...@gmail.com> wrote: > > Hi Royale, > > I was recently trying to cast an Object > > obj as CustomVO > > but it would always turn to null. The as operator kept thinking CustomVO was > type Function() why would this be? > > The workaround ending up being to set the prototype. > > Object.setPrototypeOf(obj, CustomVO.prototype); > > and this successfully casted correctly. Is there a better way to do this? > Most likely something something to do with the structure of CustomVO? the > classes it extends? > > Thanks for your time. > > -Gabriel Barbosa > > > > -- > Sent from: http://apache-royale-development.20373.n8.nabble.com/