diff --git a/src/UIShell/HeaderAction.svelte b/src/UIShell/HeaderAction.svelte
index da47c6da..03fdb613 100644
--- a/src/UIShell/HeaderAction.svelte
+++ b/src/UIShell/HeaderAction.svelte
@@ -1,4 +1,9 @@
 <script>
+  /**
+   * @event {null} open
+   * @event {null} close
+   */
+
   /** Set to `true` to open the panel */
   export let isOpen = false;