refactor: recreate extension exports

packages/extension-heading/src/heading.ts

@@ -10,7 +10,7 @@ export interface HeadingOptions {
   },
 }
 
-const Heading = Node.create({
+export const Heading = Node.create({
   name: 'heading',
 
   defaultOptions: <HeadingOptions>{
@@ -91,8 +91,6 @@ const Heading = Node.create({
   },
 })
 
-export default Heading
-
 declare module '@tiptap/core' {
   interface AllExtensions {
     Heading: typeof Heading,

packages/extension-heading/src/index.ts

@@ -0,0 +1,5 @@
+import { Heading } from './heading'
+
+export * from './heading'
+
+export default Heading