fix build for now

packages/html/src/getHTMLFromFragment.ts

@@ -0,0 +1,13 @@
+import { Node, DOMSerializer, Schema } from 'prosemirror-model'
+// @ts-ignore
+import { createHTMLDocument } from 'hostic-dom'
+
+export default function getHTMLFromFragment(doc: Node, schema: Schema): string {
+  return DOMSerializer
+    .fromSchema(schema)
+    .serializeFragment(doc.content, {
+      document: createHTMLDocument(),
+    })
+    // @ts-ignore
+    .render()
+}