Fix example build

Author: martinRenou

.gitignore

@@ -120,7 +120,11 @@ ui-tests/test-results/
 ui-tests/playwright-report/
 
 examples/*.ipynb
-# Hatchling 
+# Hatchling
 yjs_widgets/_version.py
 
-.yarn/
+.yarn/
+
+# Generated code and extension
+examples/simple-yjs-widget/simple_yjs_widget/_version.py
+examples/simple-yjs-widget/simple_yjs_widget/labextension/

examples/simple-yjs-widget/package.json

@@ -54,7 +54,7 @@
     "yjs-widgets": "^0.3.3"
   },
   "devDependencies": {
-    "@jupyterlab/builder": "~4.0.0",
+    "@jupyterlab/builder": "^4",
     "@types/node": "^16.11.10",
     "@typescript-eslint/eslint-plugin": "^4.8.1",
     "@typescript-eslint/parser": "^4.8.1",