revert toms refactor

package.json

@@ -43,11 +43,7 @@
   },
   "homepage": "https://github.com/yjs/y-prosemirror#readme",
   "dependencies": {
-    "@rollup/plugin-commonjs": "^15.1.0",
-    "@rollup/plugin-node-resolve": "^9.0.0",
-    "lib0": "^0.2.34",
-    "lodash.flatten": "^4.4.0",
-    "rollup": "^2.32.0"
+    "lib0": "^0.2.34"
   },
   "peerDependencies": {
     "yjs": "^13.3.2",
@@ -57,19 +53,22 @@
     "prosemirror-view": "^1.9.10"
   },
   "devDependencies": {
+    "@rollup/plugin-commonjs": "^15.1.0",
+    "@rollup/plugin-node-resolve": "^9.0.0",
     "@types/prosemirror-state": "^1.2.5",
     "concurrently": "^4.1.0",
     "http-server": "^0.12.3",
     "jsdom": "^15.1.1",
     "prosemirror-example-setup": "^1.1.2",
     "prosemirror-model": "^1.12.0",
-    "prosemirror-schema-basic": "^1.0.1",
+    "prosemirror-schema-basic": "^1.1.2",
     "prosemirror-state": "^1.3.3",
-    "prosemirror-view": "^1.16.0",
+    "prosemirror-view": "^1.16.1",
+    "rollup": "^2.33.1",
     "standard": "^12.0.1",
     "typescript": "^3.9.7",
     "y-protocols": "^1.0.1",
     "y-webrtc": "^10.1.6",
-    "yjs": "^13.4.1"
+    "yjs": "^13.4.3"
   }
 }

rollup.config.js

@@ -78,5 +78,5 @@ export default [{
       mainFields: ['module', 'main']
     })
   ],
-  external: id => /^(lib0|lodash|prosemirror|fs|path|jsdom|isomorphic)/.test(id)
+  external: id => /^(lib0|prosemirror|fs|path|jsdom|isomorphic)/.test(id)
 }]