Empty implementation of MessagePort.start() and MessagePort.close() added.

rbri · rbri · commit c36d4926505b · 2025-10-03T15:54:02.000+02:00
diff --git a/src/changes/changes.xml b/src/changes/changes.xml
@@ -8,6 +8,9 @@
 
     <body>
         <release version="4.17.0" date="October xx, 2025" description="Chrome/Edge 140, Firefox 142, css :has(), :is(), :where(), BroadcastChannel, Bugfixes">
+            <action type="add" dev="rbri">
+                Empty implementation of MessagePort.start() and MessagePort.close() added.
+            </action>
             <action type="fix" dev="rbri">
                 Detection of the window.postMessage() transfer parameter improved.
             </action>
diff --git a/src/main/java/org/htmlunit/javascript/host/MessagePort.java b/src/main/java/org/htmlunit/javascript/host/MessagePort.java
@@ -125,4 +125,22 @@ public void execute() {
         }
     }
 
+    /**
+     * Starts the sending of messages queued on the port
+     * (only needed when using EventTarget.addEventListener; it is implied when using onmessage).
+     * @see <a href="https://developer.mozilla.org/en-US/docs/Web/API/MessagePort/start">MDN documentation</a>
+     */
+    @JsxFunction
+    public void start() {
+        // dummy for the moment
+    }
+
+    /**
+     * Disconnects the port, so it is no longer active.
+     * @see <a href="https://developer.mozilla.org/en-US/docs/Web/API/MessagePort/close">MDN documentation</a>
+     */
+    @JsxFunction
+    public void close() {
+        // dummy for the moment
+    }
 }
