fix build error

Author: afc163

package.json

@@ -27,6 +27,7 @@
     "deploy": "npm run build && cp CNAME build && gh-pages -d build"
   },
   "devDependencies": {
+    "@babel/plugin-proposal-private-property-in-object": "^7.21.11",
     "@types/jest": "^24.0.18",
     "@types/node": "^11.13.9",
     "@types/react": "^16.8.15",