Document extension
The Document extension is required, no matter what you build with Tiptap. It’s a so called “topNode”, a node that’s the home to all other nodes. Think of it like the <body> tag for your document.
The node is very tiny though. It defines a name of the node (doc), is configured to be a top node (topNode: true) and that it can contain multiple other nodes (block+). That’s all. But have a look yourself:
Breaking Change
Tiptap v1 tried to hide that node from you, but it has always been there. You have to explicitly import it from now on (or use StarterKit).
Install
npm install @tiptap/extension-document