Prevent dangling debounced extractHeadings function

Our Tiptap heading extension registers a debounced extractHeadings
function for onUpdate. If the editor gets removed but a debounced
extractHeadings call is still pending, this leads to errors (which
sometimes break tests).

So let's check whether the editor is still alive and only call
debounced extractHeadings in this case.

Signed-off-by: Jonas <[email protected]>

Author: mejo-

src/nodes/Heading/index.js

@@ -61,8 +61,11 @@ const Heading = TipTapHeading.extend({
 		}
 	},
 
-	onUpdate: debounce(function onUpdate({ editor }) {
-		extractHeadings(editor)
+	onUpdate: debounce(({ editor }) => {
+		if (editor.view && editor.state && !editor.isDestroyed) {
+			// Only run if editor still exists (prevent dangling debounced extractHeadings function)
+			extractHeadings(editor)
+		}
 	}, 900),
 
 })