Entities semplification

* Entities semplification WIP * Bug fixes after entity semplification * Fix object serialization
2026-02-13 00:24:48 +08:00 · 2023-05-05 18:50:31 +02:00
parent 4eb1ff2a7c
commit 90f19e1bca
26 changed files with 181 additions and 391 deletions
--- a/cypress/e2e/entities.cy.js
+++ b/cypress/e2e/entities.cy.js
@@ -132,7 +132,7 @@ describe("Entity initialization", () => {
            "india",
            "juliett",
            "kilo",
-            "lima",
+            // "lima", // Not defined by default
            "mike",
            "november",
            "oscar",
@@ -220,10 +220,6 @@ describe("Entity initialization", () => {
            .which.is.an("array")
            .and.is.deep.equal([true, false, false, true, true])
        )
-        it("has lima undefined", () => expect(entity)
-            .to.have.property("lima")
-            .which.is.undefined
-        )
        it("has mike equal to Foo", () => expect(entity)
            .to.have.property("mike")
            .which.is.a("string")
--- a/cypress/fixtures/Entity1.js
+++ b/cypress/fixtures/Entity1.js
@@ -5,15 +5,15 @@ export default class Entity1 extends IEntity {
    static attributes = {
        a: {
            type: Number,
+            default: 8,
        },
        b: {
            type: Number,
+            default: 9,
        },
    }

    constructor(values = {}) {
-        values.a ??= 8
-        values.b ??= 9
        super(values)
    }
 }
--- a/cypress/fixtures/Entity2.js
+++ b/cypress/fixtures/Entity2.js
@@ -27,6 +27,7 @@ export default class Entity2 extends IEntity {
        },
        someEntity: {
            type: Entity1,
+            default: new Entity1()
        },
    }

--- a/cypress/fixtures/Entity3.js
+++ b/cypress/fixtures/Entity3.js
@@ -28,7 +28,7 @@ export default class Entity3 extends IEntity {
            default: false,
        },
        golf: {
-            type: Array,
+            default: [],
        },
        hotel: {
            type: Array,
@@ -36,6 +36,7 @@ export default class Entity3 extends IEntity {
        },
        india: {
            type: [Number],
+            default: () => [],
        },
        juliett: {
            type: [String],
@@ -47,8 +48,6 @@ export default class Entity3 extends IEntity {
        },
        lima: {
            type: String,
-            default: "Foo",
-            showDefault: false,
        },
        mike: {
            type: new UnionType(Number, String, Array),
@@ -56,11 +55,14 @@ export default class Entity3 extends IEntity {
        },
        november: {
            type: new UnionType(Number, String, Array),
+            default: 0,
        },
        oscar: {
            type: Entity1,
+            default: () => new Entity1()
        },
        papa: {
+            type: Entity1,
            default: () => new Entity1({ a: 12, b: 13 }),
        },
        quebec: {
@@ -69,10 +71,12 @@ export default class Entity3 extends IEntity {
        },
        romeo: {
            type: Entity1,
+            default: new Entity1(),
            inlined: true,
        },
        sierra: {
            type: Entity2,
+            default: new Entity2(),
            inlined: true,
        }
    }
--- a/cypress/fixtures/Entity4.js
+++ b/cypress/fixtures/Entity4.js
@@ -7,6 +7,7 @@ export default class Entity4 extends IEntity {
    static attributes = {
        first: {
            type: Entity3,
+            default: new Entity3(),
            inlined: true,
        },
        second: {
--- a/dist/ueblueprint.js
+++ b/dist/ueblueprint.js
@@ -230,7 +230,8 @@ class Configuration {
    static subObjectAttributeNamePrefix = "#SubObject"
    /** @param {ObjectEntity} objectEntity */
    static subObjectAttributeNameFromEntity = (objectEntity, nameOnly = false) =>
-        this.subObjectAttributeNamePrefix + (!nameOnly && objectEntity.Class.type ? "_" + objectEntity.Class.type : "") + "_" + objectEntity.Name
+        this.subObjectAttributeNamePrefix + (!nameOnly && objectEntity.Class?.type ? `_${objectEntity.Class.type}` : "")
+        + `_${objectEntity.Name}`
    /** @param {ObjectReferenceEntity} objectReferenceEntity */
    static subObjectAttributeNameFromReference = (objectReferenceEntity, nameOnly = false) =>
        this.subObjectAttributeNamePrefix + (!nameOnly ? "_" + objectReferenceEntity.type : "") + "_" + objectReferenceEntity.path
@@ -770,6 +771,12 @@ class Utility {
            }
            targetType = type;
        }
+        if (targetType instanceof MirroredEntity) {
+            if (value instanceof MirroredEntity) {
+                return value
+            }
+            return Utility.sanitize(value, targetType.getTargetType())
+        }
        if (targetType && !Utility.isValueOfType(value, targetType, true)) {
            value = targetType === BigInt
                ? BigInt(value)
@@ -1002,7 +1009,6 @@ class Utility {
 * @typedef {{
 *     type?: AttributeType,
 *     default?: AnyValue | ValueSupplier,
- *     showDefault?: Boolean,
 *     nullable?: Boolean,
 *     ignored?: Boolean,
 *     serialized?: Boolean,
@@ -1032,7 +1038,6 @@ class IEntity {
    /** @type {AttributeDeclarations} */
    static attributes = {}
    static defaultAttribute = {
-        showDefault: true,
        nullable: false,
        ignored: false,
        serialized: false,
@@ -1050,7 +1055,7 @@ class IEntity {
                    attributes[k] = {
                        ...IEntity.defaultAttribute,
                        ...attributes[k],
-                        ...values.attributes[k]
+                        ...values.attributes[k],
                    };
                    if (!attributes[k].type) {
                        attributes[k].type = values[k] instanceof Array
@@ -1062,7 +1067,7 @@ class IEntity {
        }
        /** @type {AttributeDeclarations?} */ this.attributes;
        if (values.constructor !== Object && Object.keys(attributes).length === 1) {
-            // Where there is just one attribute, option can be the value of that attribute
+            // If values is not an object but the only value this entity can have
            values = {
                [Object.keys(attributes)[0]]: values
            };
@@ -1070,7 +1075,7 @@ class IEntity {
        const valuesNames = Object.keys(values);
        const attributesNames = Object.keys(attributes);
        const allAttributesNames = Utility.mergeArrays(attributesNames, valuesNames);
-        for (let attributeName of allAttributesNames) {
+        for (const attributeName of allAttributesNames) {
            let value = values[attributeName];
            let attribute = attributes[attributeName];

@@ -1085,26 +1090,12 @@ class IEntity {
            }

            if (!attribute) {
-                // Remember attributeName can come from the values and be not defined in the attributes
-                // In that case just assign it and skip the rest
+                // Remember attributeName can come from the values and be not defined in the attributes.
+                // In that case just assign it and skip the rest.
                this[attributeName] = value;
                continue
            }

-            let defaultValue = attribute.default;
-            let defaultType = attribute.type;
-            if (defaultType instanceof ComputedType) {
-                defaultType = defaultType.compute(this);
-            }
-            if (defaultType instanceof Array) {
-                defaultType = Array;
-            }
-            if (defaultValue instanceof Function) {
-                defaultValue = defaultValue(this);
-            }
-            if (defaultType === undefined) {
-                defaultType = Utility.getType(defaultValue);
-            }
            const assignAttribute = !attribute.predicate
                ? v => this[attributeName] = v
                : v => {
@@ -1133,6 +1124,21 @@ class IEntity {
                    this[attributeName] = v;
                };

+            let defaultValue = attribute.default;
+            if (defaultValue instanceof Function) {
+                defaultValue = defaultValue(this);
+            }
+            let defaultType = attribute.type;
+            if (defaultType instanceof ComputedType) {
+                defaultType = defaultType.compute(this);
+            }
+            if (defaultType instanceof Array) {
+                defaultType = Array;
+            }
+            if (defaultType === undefined) {
+                defaultType = Utility.getType(defaultValue);
+            }
+
            if (value !== undefined) {
                // Remember value can still be null
                if (value?.constructor === String && attribute.serialized && defaultType !== String) {
@@ -1141,43 +1147,15 @@ class IEntity {
                        .getSerializer(defaultType)
                        .read(/** @type {String} */(value));
                }
-                if (defaultType instanceof MirroredEntity && !(value instanceof MirroredEntity)) {
-                    value = undefined; // Value is discarded as it is mirrored from another one
-                    value = new MirroredEntity(defaultType.type, defaultType.key);
-                    this[attributeName] = value;
-                } else {
-                    assignAttribute(Utility.sanitize(value, /** @type {AnyValueConstructor<*>} */(defaultType)));
-                }
+                assignAttribute(Utility.sanitize(value, /** @type {AnyValueConstructor<*>} */(defaultType)));
                continue // We have a value, need nothing more
            }
-            if (defaultType instanceof UnionType) {
-                if (defaultValue != undefined) {
-                    defaultType = defaultType.types.find(
-                        type => defaultValue instanceof type || defaultValue.constructor == type
-                    ) ?? defaultType.getFirstType();
-                } else {
-                    defaultType = defaultType.getFirstType();
-                }
+            if (defaultValue !== undefined) {
+                assignAttribute(Utility.sanitize(
+                    /** @type {AnyValue} */(defaultValue),
+                    /** @type {AnyValueConstructor<AnyValue>} */(defaultType)
+                ));
            }
-            if (!attribute.showDefault) {
-                assignAttribute(undefined); // Declare undefined to preserve the order of attributes
-                continue
-            }
-            // if (defaultValue === undefined) {
-            //     defaultValue = Utility.sanitize(new /** @type {AnyValueConstructor<*>} */(defaultType)())
-            // }
-            if (attribute.serialized) {
-                if (defaultType !== String && defaultValue.constructor === String) {
-                    defaultValue = SerializerFactory
-                        // @ts-expect-error
-                        .getSerializer(defaultType)
-                        .read(defaultValue);
-                }
-            }
-            assignAttribute(Utility.sanitize(
-                /** @type {AnyValue} */(defaultValue),
-                /** @type {AnyValueConstructor<AnyValue>} */(defaultType)
-            ));
        }
    }

@@ -1217,16 +1195,11 @@ class IEntity {
                    ? [Utility.getType(attribute.default[0])]
                    : Utility.getType(attribute.default);
            }
-            if (attribute.default === undefined) {
-                if (attribute.type === undefined) {
-                    throw new Error(
-                        `UEBlueprint: Expected either "type" or "value" property in ${this.name} attribute ${prefix}`
-                        + attributeName
-                    )
-                }
-                if (attribute.showDefault) {
-                    attribute.default = this.defaultValueProviderFromType(attribute.type);
-                }
+            if (attribute.default === undefined && attribute.type === undefined) {
+                throw new Error(
+                    `UEBlueprint: Expected either "type" or "value" property in ${this.name} attribute ${prefix}`
+                    + attributeName
+                )
            }
            if (attribute.default === null) {
                attribute.nullable = true;
@@ -1420,6 +1393,7 @@ class FormatTextEntity extends IEntity {
    static attributes = {
        value: {
            type: [new UnionType(String, LocalizedTextEntity, InvariantTextEntity, FormatTextEntity)],
+            default: [],
        },
    }

@@ -1514,6 +1488,10 @@ class ObjectReferenceEntity extends IEntity {
        /** @type {String} */ this.path;
    }

+    static createNoneInstance() {
+        return new ObjectReferenceEntity({ type: "None", path: "" })
+    }
+
    sanitize() {
        if (this.type && !this.type.startsWith("/")) {
            let deprecatedType = this.type + "_Deprecated";
@@ -1538,15 +1516,12 @@ class FunctionReferenceEntity extends IEntity {
    static attributes = {
        MemberParent: {
            type: ObjectReferenceEntity,
-            showDefault: false
        },
        MemberName: {
            type: String,
-            showDefault: false,
        },
        MemberGuid: {
            type: GuidEntity,
-            showDefault: false,
        },
    }

@@ -1691,14 +1666,17 @@ class LinearColorEntity extends IEntity {
    static attributes = {
        R: {
            type: RealUnitEntity,
+            default: () => new RealUnitEntity(),
            expected: true,
        },
        G: {
            type: RealUnitEntity,
+            default: () => new RealUnitEntity(),
            expected: true,
        },
        B: {
            type: RealUnitEntity,
+            default: () => new RealUnitEntity(),
            expected: true,
        },
        A: {
@@ -1707,17 +1685,17 @@ class LinearColorEntity extends IEntity {
        },
        H: {
            type: RealUnitEntity,
-            showDefault: true,
+            default: () => new RealUnitEntity(),
            ignored: true,
        },
        S: {
            type: RealUnitEntity,
-            showDefault: true,
+            default: () => new RealUnitEntity(),
            ignored: true,
        },
        V: {
            type: RealUnitEntity,
-            showDefault: true,
+            default: () => new RealUnitEntity(),
            ignored: true,
        },
    }
@@ -1933,12 +1911,15 @@ class MacroGraphReferenceEntity extends IEntity {
    static attributes = {
        MacroGraph: {
            type: ObjectReferenceEntity,
+            default: () => new ObjectReferenceEntity(),
        },
        GraphBlueprint: {
            type: ObjectReferenceEntity,
+            default: () => new ObjectReferenceEntity(),
        },
        GraphGuid: {
            type: GuidEntity,
+            default: () => new GuidEntity(),
        },
    }

@@ -2026,6 +2007,7 @@ class PinTypeEntity extends IEntity {
        },
        PinSubCategoryObject: {
            type: ObjectReferenceEntity,
+            default: () => ObjectReferenceEntity.createNoneInstance(),
        },
        PinSubCategoryMemberReference: {
            type: FunctionReferenceEntity,
@@ -2096,12 +2078,15 @@ class RotatorEntity extends IEntity {
    static attributes = {
        R: {
            default: 0,
+            expected: true,
        },
        P: {
            default: 0,
+            expected: true,
        },
        Y: {
            default: 0,
+            expected: true,
        },
    }

@@ -2225,37 +2210,33 @@ class PinEntity extends IEntity {
    static attributes = {
        PinId: {
            type: GuidEntity,
+            default: () => new GuidEntity()
        },
        PinName: {
            default: "",
        },
        PinFriendlyName: {
            type: new UnionType(LocalizedTextEntity, FormatTextEntity, String),
-            showDefault: false,
        },
        PinToolTip: {
            type: String,
-            showDefault: false,
        },
        Direction: {
            type: String,
-            showDefault: false,
        },
        PinType: {
            type: PinTypeEntity,
+            default: () => new PinTypeEntity(),
            inlined: true,
        },
        LinkedTo: {
            type: [PinReferenceEntity],
-            showDefault: false,
        },
        SubPins: {
            type: [PinReferenceEntity],
-            showDefault: false,
        },
        ParentPin: {
            type: PinReferenceEntity,
-            showDefault: false,
        },
        DefaultValue: {
            type: new ComputedType(
@@ -2263,15 +2244,12 @@ class PinEntity extends IEntity {
                pinEntity => pinEntity.getEntityType(true) ?? String
            ),
            serialized: true,
-            showDefault: false,
        },
        AutogeneratedDefaultValue: {
            type: String,
-            showDefault: false,
        },
        DefaultObject: {
            type: ObjectReferenceEntity,
-            showDefault: false,
            default: null,
        },
        PersistentGuid: {
@@ -2444,7 +2422,7 @@ class PinEntity extends IEntity {
        });
        if (indexElement >= 0) {
            this.LinkedTo.splice(indexElement, 1);
-            if (this.LinkedTo.length === 0 && !PinEntity.attributes.LinkedTo.showDefault) {
+            if (this.LinkedTo.length === 0 && PinEntity.attributes.LinkedTo.default === undefined) {
                this.LinkedTo = undefined;
            }
            return true
@@ -2827,8 +2805,7 @@ class VariableReferenceEntity extends IEntity {

    static attributes = {
        MemberScope: {
-            default: "",
-            showDefault: false,
+            type: String,
        },
        MemberName: {
            default: "",
@@ -2837,8 +2814,7 @@ class VariableReferenceEntity extends IEntity {
            type: GuidEntity,
        },
        bSelfContext: {
-            default: false,
-            showDefault: false,
+            type: Boolean,
        },
    }

@@ -2865,230 +2841,163 @@ class ObjectEntity extends IEntity {
        },
        AxisKey: {
            type: SymbolEntity,
-            showDefault: false,
        },
        InputAxisKey: {
            type: SymbolEntity,
-            showDefault: false,
        },
        bIsPureFunc: {
-            default: false,
-            showDefault: false,
+            type: Boolean,
        },
        bIsConstFunc: {
-            default: false,
-            showDefault: false,
+            type: Boolean,
        },
        VariableReference: {
            type: VariableReferenceEntity,
-            default: null,
-            showDefault: false,
        },
        SelfContextInfo: {
            type: SymbolEntity,
-            default: null,
-            showDefault: false,
        },
        DelegatePropertyName: {
            type: String,
-            showDefault: false,
        },
        DelegateOwnerClass: {
            type: ObjectReferenceEntity,
-            showDefault: false,
        },
        ComponentPropertyName: {
            type: String,
-            showDefault: false,
        },
        EventReference: {
            type: FunctionReferenceEntity,
-            default: null,
-            showDefault: false,
        },
        FunctionReference: {
            type: FunctionReferenceEntity,
-            default: null,
-            showDefault: false,
        },
        CustomFunctionName: {
            type: String,
-            showDefault: false,
        },
        TargetType: {
            type: ObjectReferenceEntity,
-            default: null,
-            showDefault: false,
        },
        MacroGraphReference: {
            type: MacroGraphReferenceEntity,
-            default: null,
-            showDefault: false,
        },
        Enum: {
            type: ObjectReferenceEntity,
-            showDefault: false,
        },
        EnumEntries: {
            type: [String],
-            showDefault: false,
            inlined: true,
        },
        InputKey: {
            type: SymbolEntity,
-            showDefault: false,
        },
        bOverrideFunction: {
            type: Boolean,
-            showDefault: false,
        },
        bInternalEvent: {
            type: Boolean,
-            showDefault: false,
        },
        bConsumeInput: {
            type: Boolean,
-            showDefault: false,
        },
        bExecuteWhenPaused: {
            type: Boolean,
-            showDefault: false,
        },
        bOverrideParentBinding: {
            type: Boolean,
-            showDefault: false,
        },
        bControl: {
            type: Boolean,
-            showDefault: false,
        },
        bAlt: {
            type: Boolean,
-            showDefault: false,
        },
        bShift: {
            type: Boolean,
-            showDefault: false,
        },
        bCommand: {
            type: Boolean,
-            showDefault: false,
        },
        CommentColor: {
            type: LinearColorEntity,
-            showDefault: false,
        },
        bCommentBubbleVisible_InDetailsPanel: {
            type: Boolean,
-            showDefault: false,
        },
        bColorCommentBubble: {
            type: Boolean,
-            default: false,
-            showDefault: false,
        },
        R: {
            type: Number,
-            showDefault: false,
        },
        G: {
            type: Number,
-            showDefault: false,
        },
        MaterialExpression: {
            type: ObjectReferenceEntity,
-            showDefault: false,
        },
        MoveMode: {
            type: SymbolEntity,
-            showDefault: false,
        },
        TimelineName: {
            type: String,
-            showDefault: false,
        },
        TimelineGuid: {
            type: GuidEntity,
-            showDefault: false,
        },
        SizeX: {
            type: new MirroredEntity(ObjectEntity, "NodeWidth"),
-            showDefault: false,
        },
        SizeY: {
            type: new MirroredEntity(ObjectEntity, "NodeHeight"),
-            showDefault: false,
        },
        Text: {
            type: new MirroredEntity(ObjectEntity, "NodeComment"),
-            showDefault: false,
        },
        MaterialExpressionEditorX: {
            type: new MirroredEntity(ObjectEntity, "NodePosX"),
-            showDefault: false,
        },
        MaterialExpressionEditorY: {
            type: new MirroredEntity(ObjectEntity, "NodePosY"),
-            showDefault: false,
        },
        NodePosX: {
            type: IntegerEntity,
-            showDefault: false,
        },
        NodePosY: {
            type: IntegerEntity,
-            showDefault: false,
        },
        NodeWidth: {
            type: IntegerEntity,
-            showDefault: false,
        },
        NodeHeight: {
            type: IntegerEntity,
-            showDefault: false,
        },
        bCanRenameNode: {
            type: Boolean,
-            showDefault: false,
        },
        bCommentBubblePinned: {
            type: Boolean,
-            showDefault: false,
        },
        bCommentBubbleVisible: {
            type: Boolean,
-            showDefault: false,
-        },
-        Text: {
-            type: String,
-            showDefault: false,
        },
        NodeComment: {
            type: String,
-            showDefault: false,
        },
        AdvancedPinDisplay: {
            type: IdentifierEntity,
-            default: null,
-            showDefault: false,
        },
        EnabledState: {
            type: IdentifierEntity,
-            default: null,
-            showDefault: false,
        },
        NodeGuid: {
            type: GuidEntity,
-            showDefault: false,
        },
        ErrorType: {
            type: IntegerEntity,
-            showDefault: false,
        },
        ErrorMsg: {
            type: String,
-            default: "",
-            showDefault: false,
        },
        CustomProperties: {
            type: [new UnionType(PinEntity, UnknownPinEntity)],
@@ -3260,7 +3169,7 @@ class ObjectEntity extends IEntity {
    }

    getClass() {
-        return this.Class.path ? this.Class.path : this.Class.type
+        return this.Class?.path ? this.Class.path : this.Class?.type ?? ""
    }

    getType() {
@@ -3690,24 +3599,19 @@ class TerminalTypeEntity extends IEntity {

    static attributes = {
        TerminalCategory: {
-            default: "",
-            showDefault: false,
+            type: String,
        },
        TerminalSubCategory: {
-            default: "",
-            showDefault: false,
+            type: String,
        },
        bTerminalIsConst: {
-            default: false,
-            showDefault: false,
+            type: Boolean,
        },
        bTerminalIsWeakPointer: {
-            default: false,
-            showDefault: false,
+            type: Boolean,
        },
        bTerminalIsUObjectWrapper: {
-            default: false,
-            showDefault: false,
+            type: Boolean,
        },
    }

@@ -3730,7 +3634,6 @@ class UnknownKeysEntity extends IEntity {
    static attributes = {
        lookbehind: {
            default: "",
-            showDefault: true,
            ignored: true,
        },
    }
@@ -3883,6 +3786,7 @@ class Grammar {
                );
        } else if (type instanceof MirroredEntity) {
            return this.grammarFor(type.type.attributes[type.key])
+                .map(() => new MirroredEntity(type.type, type.key, type.getter))
        } else if (attribute?.constructor === Object) {
            result = this.grammarFor(undefined, type);
        } else {
@@ -4162,9 +4066,7 @@ class Grammar {
    static naturalNumberEntity = P.lazy(() => this.naturalNumber.map(v => new NaturalNumberEntity(v)))

    static noneReferenceEntity = P.lazy(() =>
-        P.string("None").map(() =>
-            new ObjectReferenceEntity({ type: "None", path: "" })
-        )
+        P.string("None").map(() => ObjectReferenceEntity.createNoneInstance())
    )

    static typeReferenceEntity = P.lazy(() =>
@@ -4585,10 +4487,7 @@ class Serializer {
    ) {
        let result = "";
        const attributes = IEntity.getAttributes(entity);
-        const keys = Utility.mergeArrays(
-            Object.keys(attributes),
-            Object.keys(entity)
-        );
+        const keys = Object.keys(entity);
        let first = true;
        for (const key of keys) {
            const value = entity[key];
@@ -4650,14 +4549,9 @@ class Serializer {
    }

    showProperty(entity, key) {
-        const attributes = /** @type {EntityConstructor} */(this.entityType).attributes;
-        const attribute = attributes[key];
-        const value = entity[key];
-        if (attribute?.constructor === Object) {
-            if (attribute.ignored) {
-                return false
-            }
-            return !Utility.equals(attribute.default, value) || attribute.showDefault
+        const attribute = /** @type {EntityConstructor} */(this.entityType).attributes[key];
+        if (attribute?.constructor === Object && attribute.ignored) {
+            return false
        }
        return true
    }
@@ -4735,7 +4629,7 @@ class ObjectSerializer extends Serializer {
            )
        }
        let result = indentation + "Begin Object"
-            + (entity.Class.type || entity.Class.path ? ` Class=${this.doWriteValue(entity.Class, insideString)}` : "")
+            + (entity.Class?.type || entity.Class?.path ? ` Class=${this.doWriteValue(entity.Class, insideString)}` : "")
            + (entity.Name ? ` Name=${this.doWriteValue(entity.Name, insideString)}` : "")
            + "\n"
            + super.doWrite(
@@ -6277,13 +6171,12 @@ class IFromToPositionedTemplate extends ITemplate {
 class KnotEntity extends ObjectEntity {

    /**
-     * @param {Object} options
+     * @param {Object} values
     * @param {PinEntity} pinReferenceForType
     */
-    constructor(options = {}, pinReferenceForType = undefined) {
-        super(options, true);
-        this.Class = new ObjectReferenceEntity(Configuration.paths.knot);
-        this.Name = "K2Node_Knot";
+    constructor(values = {}, pinReferenceForType = undefined) {
+        values.Class = new ObjectReferenceEntity(Configuration.paths.knot);
+        values.Name = "K2Node_Knot";
        const inputPinEntity = new PinEntity(
            {
                PinName: "InputPin",
@@ -6301,7 +6194,8 @@ class KnotEntity extends ObjectEntity {
            inputPinEntity.copyTypeFrom(pinReferenceForType);
            outputPinEntity.copyTypeFrom(pinReferenceForType);
        }
-        this.CustomProperties = [inputPinEntity, outputPinEntity];
+        values.CustomProperties = [inputPinEntity, outputPinEntity];
+        super(values, true);
    }
 }

--- a/dist/ueblueprint.min.js
+++ b/dist/ueblueprint.min.js
--- a/js/Configuration.js
+++ b/js/Configuration.js
@@ -206,7 +206,8 @@ export default class Configuration {
    static subObjectAttributeNamePrefix = "#SubObject"
    /** @param {ObjectEntity} objectEntity */
    static subObjectAttributeNameFromEntity = (objectEntity, nameOnly = false) =>
-        this.subObjectAttributeNamePrefix + (!nameOnly && objectEntity.Class.type ? "_" + objectEntity.Class.type : "") + "_" + objectEntity.Name
+        this.subObjectAttributeNamePrefix + (!nameOnly && objectEntity.Class?.type ? `_${objectEntity.Class.type}` : "")
+        + `_${objectEntity.Name}`
    /** @param {ObjectReferenceEntity} objectReferenceEntity */
    static subObjectAttributeNameFromReference = (objectReferenceEntity, nameOnly = false) =>
        this.subObjectAttributeNamePrefix + (!nameOnly ? "_" + objectReferenceEntity.type : "") + "_" + objectReferenceEntity.path
--- a/js/Utility.js
+++ b/js/Utility.js
@@ -240,6 +240,12 @@ export default class Utility {
            }
            targetType = type
        }
+        if (targetType instanceof MirroredEntity) {
+            if (value instanceof MirroredEntity) {
+                return value
+            }
+            return Utility.sanitize(value, targetType.getTargetType())
+        }
        if (targetType && !Utility.isValueOfType(value, targetType, true)) {
            value = targetType === BigInt
                ? BigInt(value)
--- a/js/entity/FormatTextEntity.js
+++ b/js/entity/FormatTextEntity.js
@@ -9,6 +9,7 @@ export default class FormatTextEntity extends IEntity {
    static attributes = {
        value: {
            type: [new UnionType(String, LocalizedTextEntity, InvariantTextEntity, FormatTextEntity)],
+            default: [],
        },
    }

--- a/js/entity/FunctionReferenceEntity.js
+++ b/js/entity/FunctionReferenceEntity.js
@@ -7,15 +7,12 @@ export default class FunctionReferenceEntity extends IEntity {
    static attributes = {
        MemberParent: {
            type: ObjectReferenceEntity,
-            showDefault: false
        },
        MemberName: {
            type: String,
-            showDefault: false,
        },
        MemberGuid: {
            type: GuidEntity,
-            showDefault: false,
        },
    }

--- a/js/entity/IEntity.js
+++ b/js/entity/IEntity.js
@@ -18,7 +18,6 @@ import Utility from "../Utility.js"
 * @typedef {{
 *     type?: AttributeType,
 *     default?: AnyValue | ValueSupplier,
- *     showDefault?: Boolean,
 *     nullable?: Boolean,
 *     ignored?: Boolean,
 *     serialized?: Boolean,
@@ -48,7 +47,6 @@ export default class IEntity {
    /** @type {AttributeDeclarations} */
    static attributes = {}
    static defaultAttribute = {
-        showDefault: true,
        nullable: false,
        ignored: false,
        serialized: false,
@@ -66,7 +64,7 @@ export default class IEntity {
                    attributes[k] = {
                        ...IEntity.defaultAttribute,
                        ...attributes[k],
-                        ...values.attributes[k]
+                        ...values.attributes[k],
                    }
                    if (!attributes[k].type) {
                        attributes[k].type = values[k] instanceof Array
@@ -78,7 +76,7 @@ export default class IEntity {
        }
        /** @type {AttributeDeclarations?} */ this.attributes
        if (values.constructor !== Object && Object.keys(attributes).length === 1) {
-            // Where there is just one attribute, option can be the value of that attribute
+            // If values is not an object but the only value this entity can have
            values = {
                [Object.keys(attributes)[0]]: values
            }
@@ -86,7 +84,7 @@ export default class IEntity {
        const valuesNames = Object.keys(values)
        const attributesNames = Object.keys(attributes)
        const allAttributesNames = Utility.mergeArrays(attributesNames, valuesNames)
-        for (let attributeName of allAttributesNames) {
+        for (const attributeName of allAttributesNames) {
            let value = values[attributeName]
            let attribute = attributes[attributeName]

@@ -101,26 +99,12 @@ export default class IEntity {
            }

            if (!attribute) {
-                // Remember attributeName can come from the values and be not defined in the attributes
-                // In that case just assign it and skip the rest
+                // Remember attributeName can come from the values and be not defined in the attributes.
+                // In that case just assign it and skip the rest.
                this[attributeName] = value
                continue
            }

-            let defaultValue = attribute.default
-            let defaultType = attribute.type
-            if (defaultType instanceof ComputedType) {
-                defaultType = defaultType.compute(this)
-            }
-            if (defaultType instanceof Array) {
-                defaultType = Array
-            }
-            if (defaultValue instanceof Function) {
-                defaultValue = defaultValue(this)
-            }
-            if (defaultType === undefined) {
-                defaultType = Utility.getType(defaultValue)
-            }
            const assignAttribute = !attribute.predicate
                ? v => this[attributeName] = v
                : v => {
@@ -149,6 +133,21 @@ export default class IEntity {
                    this[attributeName] = v
                }

+            let defaultValue = attribute.default
+            if (defaultValue instanceof Function) {
+                defaultValue = defaultValue(this)
+            }
+            let defaultType = attribute.type
+            if (defaultType instanceof ComputedType) {
+                defaultType = defaultType.compute(this)
+            }
+            if (defaultType instanceof Array) {
+                defaultType = Array
+            }
+            if (defaultType === undefined) {
+                defaultType = Utility.getType(defaultValue)
+            }
+
            if (value !== undefined) {
                // Remember value can still be null
                if (value?.constructor === String && attribute.serialized && defaultType !== String) {
@@ -157,43 +156,15 @@ export default class IEntity {
                        .getSerializer(defaultType)
                        .read(/** @type {String} */(value))
                }
-                if (defaultType instanceof MirroredEntity && !(value instanceof MirroredEntity)) {
-                    value = undefined // Value is discarded as it is mirrored from another one
-                    value = new MirroredEntity(defaultType.type, defaultType.key)
-                    this[attributeName] = value
-                } else {
-                    assignAttribute(Utility.sanitize(value, /** @type {AnyValueConstructor<*>} */(defaultType)))
-                }
+                assignAttribute(Utility.sanitize(value, /** @type {AnyValueConstructor<*>} */(defaultType)))
                continue // We have a value, need nothing more
            }
-            if (defaultType instanceof UnionType) {
-                if (defaultValue != undefined) {
-                    defaultType = defaultType.types.find(
-                        type => defaultValue instanceof type || defaultValue.constructor == type
-                    ) ?? defaultType.getFirstType()
-                } else {
-                    defaultType = defaultType.getFirstType()
-                }
+            if (defaultValue !== undefined) {
+                assignAttribute(Utility.sanitize(
+                    /** @type {AnyValue} */(defaultValue),
+                    /** @type {AnyValueConstructor<AnyValue>} */(defaultType)
+                ))
            }
-            if (!attribute.showDefault) {
-                assignAttribute(undefined) // Declare undefined to preserve the order of attributes
-                continue
-            }
-            // if (defaultValue === undefined) {
-            //     defaultValue = Utility.sanitize(new /** @type {AnyValueConstructor<*>} */(defaultType)())
-            // }
-            if (attribute.serialized) {
-                if (defaultType !== String && defaultValue.constructor === String) {
-                    defaultValue = SerializerFactory
-                        // @ts-expect-error
-                        .getSerializer(defaultType)
-                        .read(defaultValue)
-                }
-            }
-            assignAttribute(Utility.sanitize(
-                /** @type {AnyValue} */(defaultValue),
-                /** @type {AnyValueConstructor<AnyValue>} */(defaultType)
-            ))
        }
    }

@@ -233,16 +204,11 @@ export default class IEntity {
                    ? [Utility.getType(attribute.default[0])]
                    : Utility.getType(attribute.default)
            }
-            if (attribute.default === undefined) {
-                if (attribute.type === undefined) {
-                    throw new Error(
-                        `UEBlueprint: Expected either "type" or "value" property in ${this.name} attribute ${prefix}`
-                        + attributeName
-                    )
-                }
-                if (attribute.showDefault) {
-                    attribute.default = this.defaultValueProviderFromType(attribute.type)
-                }
+            if (attribute.default === undefined && attribute.type === undefined) {
+                throw new Error(
+                    `UEBlueprint: Expected either "type" or "value" property in ${this.name} attribute ${prefix}`
+                    + attributeName
+                )
            }
            if (attribute.default === null) {
                attribute.nullable = true
--- a/js/entity/LinearColorEntity.js
+++ b/js/entity/LinearColorEntity.js
@@ -7,14 +7,17 @@ export default class LinearColorEntity extends IEntity {
    static attributes = {
        R: {
            type: RealUnitEntity,
+            default: () => new RealUnitEntity(),
            expected: true,
        },
        G: {
            type: RealUnitEntity,
+            default: () => new RealUnitEntity(),
            expected: true,
        },
        B: {
            type: RealUnitEntity,
+            default: () => new RealUnitEntity(),
            expected: true,
        },
        A: {
@@ -23,17 +26,17 @@ export default class LinearColorEntity extends IEntity {
        },
        H: {
            type: RealUnitEntity,
-            showDefault: true,
+            default: () => new RealUnitEntity(),
            ignored: true,
        },
        S: {
            type: RealUnitEntity,
-            showDefault: true,
+            default: () => new RealUnitEntity(),
            ignored: true,
        },
        V: {
            type: RealUnitEntity,
-            showDefault: true,
+            default: () => new RealUnitEntity(),
            ignored: true,
        },
    }
--- a/js/entity/MacroGraphReferenceEntity.js
+++ b/js/entity/MacroGraphReferenceEntity.js
@@ -7,12 +7,15 @@ export default class MacroGraphReferenceEntity extends IEntity {
    static attributes = {
        MacroGraph: {
            type: ObjectReferenceEntity,
+            default: () => new ObjectReferenceEntity(),
        },
        GraphBlueprint: {
            type: ObjectReferenceEntity,
+            default: () => new ObjectReferenceEntity(),
        },
        GraphGuid: {
            type: GuidEntity,
+            default: () => new GuidEntity(),
        },
    }

--- a/js/entity/ObjectEntity.js
+++ b/js/entity/ObjectEntity.js
@@ -27,230 +27,163 @@ export default class ObjectEntity extends IEntity {
        },
        AxisKey: {
            type: SymbolEntity,
-            showDefault: false,
        },
        InputAxisKey: {
            type: SymbolEntity,
-            showDefault: false,
        },
        bIsPureFunc: {
-            default: false,
-            showDefault: false,
+            type: Boolean,
        },
        bIsConstFunc: {
-            default: false,
-            showDefault: false,
+            type: Boolean,
        },
        VariableReference: {
            type: VariableReferenceEntity,
-            default: null,
-            showDefault: false,
        },
        SelfContextInfo: {
            type: SymbolEntity,
-            default: null,
-            showDefault: false,
        },
        DelegatePropertyName: {
            type: String,
-            showDefault: false,
        },
        DelegateOwnerClass: {
            type: ObjectReferenceEntity,
-            showDefault: false,
        },
        ComponentPropertyName: {
            type: String,
-            showDefault: false,
        },
        EventReference: {
            type: FunctionReferenceEntity,
-            default: null,
-            showDefault: false,
        },
        FunctionReference: {
            type: FunctionReferenceEntity,
-            default: null,
-            showDefault: false,
        },
        CustomFunctionName: {
            type: String,
-            showDefault: false,
        },
        TargetType: {
            type: ObjectReferenceEntity,
-            default: null,
-            showDefault: false,
        },
        MacroGraphReference: {
            type: MacroGraphReferenceEntity,
-            default: null,
-            showDefault: false,
        },
        Enum: {
            type: ObjectReferenceEntity,
-            showDefault: false,
        },
        EnumEntries: {
            type: [String],
-            showDefault: false,
            inlined: true,
        },
        InputKey: {
            type: SymbolEntity,
-            showDefault: false,
        },
        bOverrideFunction: {
            type: Boolean,
-            showDefault: false,
        },
        bInternalEvent: {
            type: Boolean,
-            showDefault: false,
        },
        bConsumeInput: {
            type: Boolean,
-            showDefault: false,
        },
        bExecuteWhenPaused: {
            type: Boolean,
-            showDefault: false,
        },
        bOverrideParentBinding: {
            type: Boolean,
-            showDefault: false,
        },
        bControl: {
            type: Boolean,
-            showDefault: false,
        },
        bAlt: {
            type: Boolean,
-            showDefault: false,
        },
        bShift: {
            type: Boolean,
-            showDefault: false,
        },
        bCommand: {
            type: Boolean,
-            showDefault: false,
        },
        CommentColor: {
            type: LinearColorEntity,
-            showDefault: false,
        },
        bCommentBubbleVisible_InDetailsPanel: {
            type: Boolean,
-            showDefault: false,
        },
        bColorCommentBubble: {
            type: Boolean,
-            default: false,
-            showDefault: false,
        },
        R: {
            type: Number,
-            showDefault: false,
        },
        G: {
            type: Number,
-            showDefault: false,
        },
        MaterialExpression: {
            type: ObjectReferenceEntity,
-            showDefault: false,
        },
        MoveMode: {
            type: SymbolEntity,
-            showDefault: false,
        },
        TimelineName: {
            type: String,
-            showDefault: false,
        },
        TimelineGuid: {
            type: GuidEntity,
-            showDefault: false,
        },
        SizeX: {
            type: new MirroredEntity(ObjectEntity, "NodeWidth"),
-            showDefault: false,
        },
        SizeY: {
            type: new MirroredEntity(ObjectEntity, "NodeHeight"),
-            showDefault: false,
        },
        Text: {
            type: new MirroredEntity(ObjectEntity, "NodeComment"),
-            showDefault: false,
        },
        MaterialExpressionEditorX: {
            type: new MirroredEntity(ObjectEntity, "NodePosX"),
-            showDefault: false,
        },
        MaterialExpressionEditorY: {
            type: new MirroredEntity(ObjectEntity, "NodePosY"),
-            showDefault: false,
        },
        NodePosX: {
            type: IntegerEntity,
-            showDefault: false,
        },
        NodePosY: {
            type: IntegerEntity,
-            showDefault: false,
        },
        NodeWidth: {
            type: IntegerEntity,
-            showDefault: false,
        },
        NodeHeight: {
            type: IntegerEntity,
-            showDefault: false,
        },
        bCanRenameNode: {
            type: Boolean,
-            showDefault: false,
        },
        bCommentBubblePinned: {
            type: Boolean,
-            showDefault: false,
        },
        bCommentBubbleVisible: {
            type: Boolean,
-            showDefault: false,
-        },
-        Text: {
-            type: String,
-            showDefault: false,
        },
        NodeComment: {
            type: String,
-            showDefault: false,
        },
        AdvancedPinDisplay: {
            type: IdentifierEntity,
-            default: null,
-            showDefault: false,
        },
        EnabledState: {
            type: IdentifierEntity,
-            default: null,
-            showDefault: false,
        },
        NodeGuid: {
            type: GuidEntity,
-            showDefault: false,
        },
        ErrorType: {
            type: IntegerEntity,
-            showDefault: false,
        },
        ErrorMsg: {
            type: String,
-            default: "",
-            showDefault: false,
        },
        CustomProperties: {
            type: [new UnionType(PinEntity, UnknownPinEntity)],
@@ -422,7 +355,7 @@ export default class ObjectEntity extends IEntity {
    }

    getClass() {
-        return this.Class.path ? this.Class.path : this.Class.type
+        return this.Class?.path ? this.Class.path : this.Class?.type ?? ""
    }

    getType() {
--- a/js/entity/ObjectReferenceEntity.js
+++ b/js/entity/ObjectReferenceEntity.js
@@ -28,6 +28,10 @@ export default class ObjectReferenceEntity extends IEntity {
        /** @type {String} */ this.path
    }

+    static createNoneInstance() {
+        return new ObjectReferenceEntity({ type: "None", path: "" })
+    }
+
    sanitize() {
        if (this.type && !this.type.startsWith("/")) {
            let deprecatedType = this.type + "_Deprecated"
--- a/js/entity/PinEntity.js
+++ b/js/entity/PinEntity.js
@@ -56,37 +56,33 @@ export default class PinEntity extends IEntity {
    static attributes = {
        PinId: {
            type: GuidEntity,
+            default: () => new GuidEntity()
        },
        PinName: {
            default: "",
        },
        PinFriendlyName: {
            type: new UnionType(LocalizedTextEntity, FormatTextEntity, String),
-            showDefault: false,
        },
        PinToolTip: {
            type: String,
-            showDefault: false,
        },
        Direction: {
            type: String,
-            showDefault: false,
        },
        PinType: {
            type: PinTypeEntity,
+            default: () => new PinTypeEntity(),
            inlined: true,
        },
        LinkedTo: {
            type: [PinReferenceEntity],
-            showDefault: false,
        },
        SubPins: {
            type: [PinReferenceEntity],
-            showDefault: false,
        },
        ParentPin: {
            type: PinReferenceEntity,
-            showDefault: false,
        },
        DefaultValue: {
            type: new ComputedType(
@@ -94,15 +90,12 @@ export default class PinEntity extends IEntity {
                pinEntity => pinEntity.getEntityType(true) ?? String
            ),
            serialized: true,
-            showDefault: false,
        },
        AutogeneratedDefaultValue: {
            type: String,
-            showDefault: false,
        },
        DefaultObject: {
            type: ObjectReferenceEntity,
-            showDefault: false,
            default: null,
        },
        PersistentGuid: {
@@ -275,7 +268,7 @@ export default class PinEntity extends IEntity {
        })
        if (indexElement >= 0) {
            this.LinkedTo.splice(indexElement, 1)
-            if (this.LinkedTo.length === 0 && !PinEntity.attributes.LinkedTo.showDefault) {
+            if (this.LinkedTo.length === 0 && PinEntity.attributes.LinkedTo.default === undefined) {
                this.LinkedTo = undefined
            }
            return true
--- a/js/entity/PinTypeEntity.js
+++ b/js/entity/PinTypeEntity.js
@@ -14,6 +14,7 @@ export default class PinTypeEntity extends IEntity {
        },
        PinSubCategoryObject: {
            type: ObjectReferenceEntity,
+            default: () => ObjectReferenceEntity.createNoneInstance(),
        },
        PinSubCategoryMemberReference: {
            type: FunctionReferenceEntity,
--- a/js/entity/RotatorEntity.js
+++ b/js/entity/RotatorEntity.js
@@ -5,12 +5,15 @@ export default class RotatorEntity extends IEntity {
    static attributes = {
        R: {
            default: 0,
+            expected: true,
        },
        P: {
            default: 0,
+            expected: true,
        },
        Y: {
            default: 0,
+            expected: true,
        },
    }

--- a/js/entity/TerminalTypeEntity.js
+++ b/js/entity/TerminalTypeEntity.js
@@ -4,24 +4,19 @@ export default class TerminalTypeEntity extends IEntity {

    static attributes = {
        TerminalCategory: {
-            default: "",
-            showDefault: false,
+            type: String,
        },
        TerminalSubCategory: {
-            default: "",
-            showDefault: false,
+            type: String,
        },
        bTerminalIsConst: {
-            default: false,
-            showDefault: false,
+            type: Boolean,
        },
        bTerminalIsWeakPointer: {
-            default: false,
-            showDefault: false,
+            type: Boolean,
        },
        bTerminalIsUObjectWrapper: {
-            default: false,
-            showDefault: false,
+            type: Boolean,
        },
    }

--- a/js/entity/UnknownKeysEntity.js
+++ b/js/entity/UnknownKeysEntity.js
@@ -5,7 +5,6 @@ export default class UnknownKeysEntity extends IEntity {
    static attributes = {
        lookbehind: {
            default: "",
-            showDefault: true,
            ignored: true,
        },
    }
--- a/js/entity/VariableReferenceEntity.js
+++ b/js/entity/VariableReferenceEntity.js
@@ -5,8 +5,7 @@ export default class VariableReferenceEntity extends IEntity {

    static attributes = {
        MemberScope: {
-            default: "",
-            showDefault: false,
+            type: String,
        },
        MemberName: {
            default: "",
@@ -15,8 +14,7 @@ export default class VariableReferenceEntity extends IEntity {
            type: GuidEntity,
        },
        bSelfContext: {
-            default: false,
-            showDefault: false,
+            type: Boolean,
        },
    }

--- a/js/entity/objects/KnotEntity.js
+++ b/js/entity/objects/KnotEntity.js
@@ -6,13 +6,12 @@ import PinEntity from "../PinEntity.js"
 export default class KnotEntity extends ObjectEntity {

    /**
-     * @param {Object} options
+     * @param {Object} values
     * @param {PinEntity} pinReferenceForType
     */
-    constructor(options = {}, pinReferenceForType = undefined) {
-        super(options, true)
-        this.Class = new ObjectReferenceEntity(Configuration.paths.knot)
-        this.Name = "K2Node_Knot"
+    constructor(values = {}, pinReferenceForType = undefined) {
+        values.Class = new ObjectReferenceEntity(Configuration.paths.knot)
+        values.Name = "K2Node_Knot"
        const inputPinEntity = new PinEntity(
            {
                PinName: "InputPin",
@@ -30,6 +29,7 @@ export default class KnotEntity extends ObjectEntity {
            inputPinEntity.copyTypeFrom(pinReferenceForType)
            outputPinEntity.copyTypeFrom(pinReferenceForType)
        }
-        this.CustomProperties = [inputPinEntity, outputPinEntity]
+        values.CustomProperties = [inputPinEntity, outputPinEntity]
+        super(values, true)
    }
 }
--- a/js/serialization/Grammar.js
+++ b/js/serialization/Grammar.js
@@ -175,6 +175,7 @@ export default class Grammar {
                )
        } else if (type instanceof MirroredEntity) {
            return this.grammarFor(type.type.attributes[type.key])
+                .map(() => new MirroredEntity(type.type, type.key, type.getter))
        } else if (attribute?.constructor === Object) {
            result = this.grammarFor(undefined, type)
        } else {
@@ -454,9 +455,7 @@ export default class Grammar {
    static naturalNumberEntity = P.lazy(() => this.naturalNumber.map(v => new NaturalNumberEntity(v)))

    static noneReferenceEntity = P.lazy(() =>
-        P.string("None").map(() =>
-            new ObjectReferenceEntity({ type: "None", path: "" })
-        )
+        P.string("None").map(() => ObjectReferenceEntity.createNoneInstance())
    )

    static typeReferenceEntity = P.lazy(() =>
--- a/js/serialization/ObjectSerializer.js
+++ b/js/serialization/ObjectSerializer.js
@@ -77,7 +77,7 @@ export default class ObjectSerializer extends Serializer {
            )
        }
        let result = indentation + "Begin Object"
-            + (entity.Class.type || entity.Class.path ? ` Class=${this.doWriteValue(entity.Class, insideString)}` : "")
+            + (entity.Class?.type || entity.Class?.path ? ` Class=${this.doWriteValue(entity.Class, insideString)}` : "")
            + (entity.Name ? ` Name=${this.doWriteValue(entity.Name, insideString)}` : "")
            + "\n"
            + super.doWrite(
--- a/js/serialization/Serializer.js
+++ b/js/serialization/Serializer.js
@@ -82,10 +82,7 @@ export default class Serializer {
    ) {
        let result = ""
        const attributes = IEntity.getAttributes(entity)
-        const keys = Utility.mergeArrays(
-            Object.keys(attributes),
-            Object.keys(entity)
-        )
+        const keys = Object.keys(entity)
        let first = true
        for (const key of keys) {
            const value = entity[key]
@@ -147,14 +144,9 @@ export default class Serializer {
    }

    showProperty(entity, key) {
-        const attributes = /** @type {EntityConstructor} */(this.entityType).attributes
-        const attribute = attributes[key]
-        const value = entity[key]
-        if (attribute?.constructor === Object) {
-            if (attribute.ignored) {
-                return false
-            }
-            return !Utility.equals(attribute.default, value) || attribute.showDefault
+        const attribute = /** @type {EntityConstructor} */(this.entityType).attributes[key]
+        if (attribute?.constructor === Object && attribute.ignored) {
+            return false
        }
        return true
    }