Prevent error from unexpected attribute

js/entity/EnumEntity.js

@@ -0,0 +1,8 @@
+import ByteEntity from "./ByteEntity"
+
+export default class EnumEntity extends ByteEntity {
+
+    constructor(values = 0) {
+        super(values)
+    }
+}

js/entity/IEntity.js

@@ -25,7 +25,8 @@ import Utility from "../Utility"
 
 /**
  * @template {AnyValue} T
- * @typedef {(new () => T) | EntityConstructor | StringConstructor | NumberConstructor | BigIntConstructor | BooleanConstructor | ArrayConstructor} AnyValueConstructor
+ * @typedef {(new () => T) | EntityConstructor | StringConstructor | NumberConstructor | BigIntConstructor 
+ *     | BooleanConstructor | ArrayConstructor} AnyValueConstructor
  */
 
 export default class IEntity {
@@ -54,6 +55,12 @@ export default class IEntity {
                 /** @type {AttributeInformation} */
                 let attribute = attributes[attributeName]
 
+                if (!attribute) {
+                    // Remember attributeName can come from the values and be not defined in the attributes
+                    target[attributeName] = value
+                    continue
+                }
+
                 if (attribute instanceof SubAttributesDeclaration) {
                     target[attributeName] = {}
                     defineAllAttributes(