Accessor#set Assigning an instance of 'esri.Graphic' which is not a subclass of 'esri.Graphic'

[agsdaniel]

var GraphicsLayer = GraphicsLayer.createSubclass({

            declaredClass:"egova.layers.GraphicsLayer",

...

addGraphic:function (id, layerTag, geometry, style, attr,

                    hStyle, popupTemplate) {

                var graphic = new Graphic({geometry:geometry});

                this.setSymbol(graphic,style);

                graphic.style = style;

                graphic.attributes = attr;

                graphic.id = id;

                graphic.hStyle = hStyle;

                graphic.layerTag = layerTag;

                graphic.extent = geometry.extent;

                popupTemplate&&(graphic.popupTemplate = popupTemplate);

                this.add(graphic);

                return graphic;

            }

});

when to add a graphic to graphicslayer，console prints the errors"Accessor#set Assigning an instance of 'esri.Graphic' which is not a subclass of 'esri.Graphic'",what's the problem?

[agsdaniel]

arcgis api for js version is 4.18.0

[VictorBerchet]

It's hard to figure out with so little information. The best would be for you to add a reproduction in a codepen as https://codepen.io/vicb-the-lessful/pen/wvzLEBa?editors=100

Maybe

var GraphicsLayer = GraphicsLayer.createSubclass({
            declaredClass:"egova.layers.GraphicsLayer",

looks fishy: try to change the variable name to something different than the base class, i.e. `ExtendedGraphicsLayer` ?

[agsdaniel]

https://codepen.io/xstrivefor/pen/YzGommX

the error doesn't  repeat in codepen,but the same code will print the error every time when to use method addGraphic in local enviroment

[agsdaniel]

The problem hasn't been solved.Maybe the inheritance has a problem in strict mode.Is there anynone has a solution?