Upgrading front end dependencies.

ui/package.json

@@ -30,13 +30,13 @@
     "markdown-it": "^8.4.2",
     "markdown-it-container": "^2.0.0",
     "moment": "^2.24.0",
-    "rxjs": "^6.4.0"
+    "rxjs": "^6.4.0",
+    "terser": "^3.17.0"
   },
   "devDependencies": {
-    "fuse-box": "3.1.3",
+    "fuse-box": "^3.1.3",
     "ts-transform-classcat": "^0.0.2",
     "ts-transform-inferno": "^4.0.2",
-    "typescript": "^3.3.3333",
+    "typescript": "^3.3.3333"
-    "uglify-es": "^3.3.9"
   }
 }