init @tiptap/html package

packages/html/index.ts

@@ -0,0 +1,11 @@
+import getSchema from '@tiptap/core'
+import getHtmlFromFragment from './getHtmlFromFragment'
+import { Node } from 'prosemirror-model'
+import { Extensions } from '@tiptap/core'
+
+export default function generateHtml(doc: object, extensions: Extensions): string {
+  const schema = getSchema(extensions)
+  const contentNode = Node.fromJSON(schema, doc)
+
+  return getHtmlFromFragment(contentNode, schema)
+}