feat: anchor links (#1765)

* feat: add heading extension with unique ID support and scroll functionality
* Added unique id for heading
* remove baseUrl heading storage
* move heading to extensions package
* WIP
* support anchors in mentions
* enhance scrolling functionality
* nodeId function
* fix nanoid import
* Bring unique-id extension local
* fixes
* fix internal link scroll in public pages
* add unique id server side
* rename mention anchor to anchorId
* capture first anchorId on paste

---------

Co-authored-by: Romik <40670677+RomikMakavana@users.noreply.github.com>

apps/server/src/collaboration/collaboration.util.ts

@@ -10,6 +10,7 @@ import { TextStyle } from '@tiptap/extension-text-style';
 import { Color } from '@tiptap/extension-color';
 import { Youtube } from '@tiptap/extension-youtube';
 import {
+  Heading,
   Callout,
   Comment,
   CustomCodeBlock,
@@ -32,7 +33,9 @@ import {
   Embed,
   Mention,
   Subpages,
-  Highlight
+  Highlight,
+  UniqueID,
+  addUniqueIdsToDoc,
 } from '@docmost/editor-ext';
 import { generateText, getSchema, JSONContent } from '@tiptap/core';
 import { generateHTML, generateJSON } from '../common/helpers/prosemirror/html';
@@ -44,6 +47,11 @@ import { Node } from '@tiptap/pm/model';
 export const tiptapExtensions = [
   StarterKit.configure({
     codeBlock: false,
+    heading: false,
+  }),
+  Heading,
+  UniqueID.configure({
+    types: ['heading', 'paragraph'],
   }),
   Comment,
   TextAlign.configure({ types: ['heading', 'paragraph'] }),
@@ -87,7 +95,14 @@ export function jsonToHtml(tiptapJson: any) {
 }
 
 export function htmlToJson(html: string) {
-  return generateJSON(html, tiptapExtensions);
+  const pmJson = generateJSON(html, tiptapExtensions);
+
+  try {
+    return addUniqueIdsToDoc(pmJson, tiptapExtensions);
+  } catch (error) {
+    console.warn('failed to add unique ids to doc', error);
+    return pmJson;
+  }
 }
 
 export function jsonToText(tiptapJson: JSONContent) {