Yes it can be done easily. You can create an empty client-side FeatureLayer by setting its source property to an empty array. Then you can add and remove features from it by calling applyEdits method.
Yes it can be done easily. You can create an empty client-side FeatureLayer by setting its source property to an empty array. Then you can add and remove features from it by calling applyEdits method.
Please read the doc from the link I provided above. Creating a FeatureLayer section in FeatureLayer doc has a section called Add an array of client-side features. This section explains all required schema properties you need to set to successfully initialize your client-side FeatureLayer. You must set the geometryType property in the class constructor to let the api know that you are creating a spatial FeatureLayer. Otherwise, the api assumes you are creating a non-spatial FeatureLayer and non spatial FeatureLayer cannot be added to the map.
