diff --git a/packages/devextreme/js/__internal/core/widget/component.ts b/packages/devextreme/js/__internal/core/widget/component.ts
index a88d5f334f08..ec6b5587f570 100644
--- a/packages/devextreme/js/__internal/core/widget/component.ts
+++ b/packages/devextreme/js/__internal/core/widget/component.ts
@@ -45,11 +45,11 @@ export class Component<
   TProperties extends Properties<TComponent>,
 // eslint-disable-next-line @typescript-eslint/ban-types
 > extends (Class.inherit({}) as new() => {}) {
-  _deprecatedOptions: Partial<TProperties> = {};
+  _deprecatedOptions!: Partial<TProperties>;
 
   _options!: Options;
 
-  _optionsByReference: Partial<TProperties> = {};
+  _optionsByReference!: Partial<TProperties>;
 
   NAME?: string;
 
diff --git a/packages/devextreme/js/__internal/core/widget/widget.ts b/packages/devextreme/js/__internal/core/widget/widget.ts
index 710536a2d216..7bc01ab41ff0 100644
--- a/packages/devextreme/js/__internal/core/widget/widget.ts
+++ b/packages/devextreme/js/__internal/core/widget/widget.ts
@@ -53,7 +53,7 @@ class Widget<
 
   private _contentReadyAction?: ((event?: Record<string, unknown>) => void) | null;
 
-  private readonly _activeStateUnit: string = '';
+  private readonly _activeStateUnit!: string;
 
   private _keyboardListenerId?: string | null;
 
@@ -543,7 +543,7 @@ class Widget<
   }
 
   _toggleIndependentState(): void {
-    const { ignoreParentReadOnly } = this.option('ignoreParentReadOnly');
+    const { ignoreParentReadOnly } = this.option();
 
     this.$element().toggleClass('dx-state-independent', ignoreParentReadOnly);
   }