add webpack to package

package.json

@@ -58,6 +58,7 @@
     "ts-jest": "^27.0.4",
     "tslib": "^2.2.0",
     "typescript": "^4.1.6",
+    "webpack": "^4.46.0",
     "webpack-bundle-analyzer": "^4.4.1"
   },
   "eslintConfig": {