Cast node attrs to string

shared/editor/nodes/Attachment.tsx

@@ -63,7 +63,7 @@ export default class Attachment extends Node {
           download: node.attrs.title,
           "data-size": node.attrs.size,
         },
-        node.attrs.title,
+        String(node.attrs.title),
       ],
       toPlainText: (node) => node.attrs.title,
     };

shared/editor/nodes/Mention.ts

@@ -59,7 +59,7 @@ export default class Mention extends Extension {
           "data-actorId": node.attrs.actorId,
           "data-url": `mention://${node.attrs.id}/${node.attrs.type}/${node.attrs.modelId}`,
         },
-        node.attrs.label,
+        String(node.attrs.label),
       ],
       toPlainText: (node) => `@${node.attrs.label}`,
     };

shared/editor/nodes/Video.tsx

@@ -71,7 +71,7 @@ export default class Video extends Node {
             width: node.attrs.width,
             height: node.attrs.height,
           },
-          node.attrs.title,
+          String(node.attrs.title),
         ],
       ],
       toPlainText: (node) => node.attrs.title,