capricorn86#776@patch: Add self equality check in node.contains method.

CSchulz · Feb 22, 2023 · c439cc1 · c439cc1
1 parent e1fb3ee
commit c439cc1
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/packages/happy-dom/src/nodes/node/Node.ts b/packages/happy-dom/src/nodes/node/Node.ts
@@ -233,6 +233,9 @@ export default class Node extends EventTarget implements INode {
 	 * @returns "true" if this node contains the other node.
 	 */
 	public contains(otherNode: INode): boolean {
+		if (this === otherNode) {
+			return true;
+		}
 		for (const childNode of this.childNodes) {
 			if (childNode === otherNode || childNode.contains(otherNode)) {
 				return true;