Validate Tiptap doc JSON before initializing editor

apps/desktop/src/components/main/body/sessions/note-input/enhanced/editor.tsx

@@ -2,7 +2,7 @@ import { forwardRef, useEffect, useMemo, useState } from "react";
 
 import { type JSONContent, TiptapEditor } from "@hypr/tiptap/editor";
 import NoteEditor from "@hypr/tiptap/editor";
-import { EMPTY_TIPTAP_DOC } from "@hypr/tiptap/shared";
+import { EMPTY_TIPTAP_DOC, isValidTiptapContent } from "@hypr/tiptap/shared";
 
 import * as main from "../../../../../../store/tinybase/main";
 
@@ -19,7 +19,12 @@ export const EnhancedEditor = forwardRef<
       const value = store.getCell("enhanced_notes", enhancedNoteId, "content");
       if (value && typeof value === "string" && value.trim()) {
         try {
-          setInitialContent(JSON.parse(value));
+          const parsed = JSON.parse(value);
+          if (isValidTiptapContent(parsed)) {
+            setInitialContent(parsed);
+          } else {
+            setInitialContent(EMPTY_TIPTAP_DOC);
+          }
         } catch {
           setInitialContent(EMPTY_TIPTAP_DOC);
         }

apps/desktop/src/components/main/body/sessions/note-input/raw.tsx

@@ -6,6 +6,7 @@ import NoteEditor, {
 } from "@hypr/tiptap/editor";
 import {
   EMPTY_TIPTAP_DOC,
+  isValidTiptapContent,
   type PlaceholderFunction,
 } from "@hypr/tiptap/shared";
 
@@ -25,7 +26,12 @@ export const RawEditor = forwardRef<
       const value = store.getCell("sessions", sessionId, "raw_md");
       if (value && typeof value === "string" && value.trim()) {
         try {
-          setInitialContent(JSON.parse(value));
+          const parsed = JSON.parse(value);
+          if (isValidTiptapContent(parsed)) {
+            setInitialContent(parsed);
+          } else {
+            setInitialContent(EMPTY_TIPTAP_DOC);
+          }
         } catch {
           setInitialContent(EMPTY_TIPTAP_DOC);
         }

packages/tiptap/src/editor/index.tsx

@@ -100,7 +100,9 @@ const Editor = forwardRef<{ editor: TiptapEditor | null }, EditorProps>(
       {
         extensions,
         editable,
-        content: initialContent || shared.EMPTY_TIPTAP_DOC,
+        content: shared.isValidTiptapContent(initialContent)
+          ? initialContent
+          : shared.EMPTY_TIPTAP_DOC,
         onCreate: ({ editor }) => {
           editor.view.dom.setAttribute("spellcheck", "false");
           editor.view.dom.setAttribute("autocomplete", "off");
@@ -129,15 +131,15 @@ const Editor = forwardRef<{ editor: TiptapEditor | null }, EditorProps>(
         previousContentRef.current = initialContent;
         if (setContentFromOutside) {
           const { from, to } = editor.state.selection;
-          if (initialContent) {
+          if (shared.isValidTiptapContent(initialContent)) {
             editor.commands.markNewContent();
           }
 
           if (from > 0 && to > 0 && from < editor.state.doc.content.size) {
             editor.commands.setTextSelection({ from, to });
           }
         } else if (!editor.isFocused) {
-          if (initialContent) {
+          if (shared.isValidTiptapContent(initialContent)) {
             editor.commands.setContent(initialContent, {
               parseOptions: { preserveWhitespace: "full" },
             });

packages/tiptap/src/shared/utils.ts

@@ -7,6 +7,15 @@ import { getExtensions } from "./extensions";
 
 export const EMPTY_TIPTAP_DOC: JSONContent = { type: "doc", content: [] };
 
+export function isValidTiptapContent(content: unknown): content is JSONContent {
+  if (!content || typeof content !== "object") {
+    return false;
+  }
+
+  const obj = content as Record<string, unknown>;
+  return obj.type === "doc" && Array.isArray(obj.content);
+}
+
 const turndown = new TurndownService({ headingStyle: "atx" });
 
 turndown.addRule("p", {