chore: [#1263] Moves isEqualNode() from IElement to INode

Author: capricorn86

packages/happy-dom/src/nodes/element/IElement.ts

@@ -292,14 +292,6 @@ export default interface IElement extends IChildNode, INonDocumentTypeChildNode,
 	 */
 	cloneNode(deep?: boolean): IElement;
 
-	/**
-	 * Compares two nodes.
-	 *
-	 * @param node Node to compare.
-	 * @returns "true" if nodes are equal.
-	 */
-	isEqualNode(node: INode): boolean;
-
 	/**
 	 * Inserts a node to the given position.
 	 *

packages/happy-dom/src/nodes/node/INode.ts

@@ -57,4 +57,12 @@ export default interface INode extends IEventTarget {
 	 * @returns True if the given node is equal to the current node, otherwise false.
 	 */
 	isSameNode(node: INode): boolean;
+
+	/**
+	 * Compares two nodes.
+	 *
+	 * @param node Node to compare.
+	 * @returns "true" if nodes are equal.
+	 */
+	isEqualNode(node: INode): boolean;
 }