Added frontend tests

package.json

@@ -8,11 +8,14 @@
     "debug-client": "tsc-watch --project ./public/js-source",
     "debug-server": "tsc-watch --project . --onSuccess \"node --enable-source-maps --use-openssl-ca --unhandled-rejections=strict ./out/index\"",
     "debug": "concurrently npm:debug-*",
+    "test": "nyc mocha -r ts-node/register ./public/js-source/test/**/*.ts",
     "build": "tsc",
     "production": "node --use-openssl-ca --unhandled-rejections=strict ./out/index",
     "install-debug": "npm install && npm run build",
-    "install-prod": "npm install --only=dev && npm install --only=prod && npm run build && rm -r node_modules && npm install --only=prod",
-    "install-prod-win": "npm install --only=dev && npm install --only=prod && npm run build && rmdir /Q/S node_modules && npm install --only=prod"
+    "install-prod": "npm install --only=dev && npm install --only=prod && npm run build && npm run del-node-module && npm install --only=prod",
+    "del-node-module:default": "rm -r node_modules",
+    "del-node-module:windows": "if exist node_modules rmdir /Q/S node_modules",
+    "del-node-module": "run-script-os"
   },
   "dependencies": {
     "compression": "^1.7.4",
@@ -25,18 +28,27 @@
     "role-acl": "^4.5.4"
   },
   "devDependencies": {
+    "@types/chai": "^4.2.14",
     "@types/compression": "^1.7.0",
     "@types/express": "^4.17.8",
     "@types/http-errors": "^1.8.0",
+    "@types/mocha": "^8.0.4",
     "@types/node": "^14.14.7",
     "@types/node-sass-middleware": "0.0.31",
     "@typescript-eslint/eslint-plugin": "^4.7.0",
     "@typescript-eslint/parser": "^4.7.0",
+    "chai": "^4.2.0",
     "concurrently": "^5.3.0",
     "eslint": "^7.13.0",
     "eslint-plugin-no-null": "^1.0.2",
     "eslint-plugin-promise": "^4.2.1",
+    "fetch-mock": "^9.10.7",
+    "jsdom": "^16.4.0",
+    "mocha": "^8.2.1",
     "node-watch": "^0.7.0",
+    "nyc": "^15.1.0",
+    "rewire": "^5.0.0",
+    "ts-node": "^9.0.0",
     "tsc-watch": "^4.2.9",
     "typescript": "^4.0.5"
   }