Add topic extension

src/lib/tiptap/index.ts

@@ -1,20 +1,4 @@
-import type {JSONContent} from '@tiptap/core'
-
+export * from '@lib/tiptap/util'
 export {createSuggestions} from '@lib/tiptap/Suggestions'
+export {TopicExtension} from '@lib/tiptap/TopicExtension'
 export {LinkExtension} from '@lib/tiptap/LinkExtension'
-
-export const findNodes = (json: JSONContent, type: string) => {
-  const results: JSONContent[] = []
-
-  for (const node of json.content || []) {
-    if (node.type === type) {
-      results.push(node)
-    }
-
-    for (const result of findNodes(node, type)) {
-      results.push(result)
-    }
-  }
-
-  return results
-}