TYPO: private property wasn't called properly

src/js/componentAttribute.js

@@ -41,7 +41,7 @@ class Dimensions {
      * @returns this Dimensions Modifier
      */
     width(pixels) {
-        this.x = pixels;
+        this.#x = pixels;
         return this;
     }
 
@@ -51,7 +51,7 @@ class Dimensions {
      * @returns this Dimensions Modifier
      */
     height(pixels) {
-        this.y = pixels;
+        this.#y = pixels;
         return this;
     }
 }