remove circumflex in typescript

package.json

@@ -57,7 +57,7 @@
     "nodemon": "^1.18.5",
     "rxjs": "^6.3.3",
     "tslib": "^1.9.0",
-    "typescript": "^3.2.4",
+    "typescript": "3.2.4",
     "url-loader": "^1.1.2",
     "webpack": "^4.28.3"
   },