updating dependencies

package.json

@@ -16,7 +16,9 @@
     "url": "https://transfer.hft-stuttgart.de/gitlab/m4lab_tv1/user-account.git"
   },
   "scripts": {
-    "start": "nodemon app.js",
+    "start": "nodemon app.ts",
+    "build": "tsc -build",
+    "clean": "tsc -build --clean",
     "test": "jest"
   },
   "dependencies": {
@@ -26,17 +28,15 @@
     "body-parser": "^1.19.0",
     "compression": "^1.7.4",
     "cookie-parser": "1.4.3",
-    "crypto": "^1.0.1",
-    "errorhandler": "1.4.3",
+    "dotenv": "^9.0.2",
     "express": "^4.17.1",
     "express-fileupload": "^1.1.6",
     "express-flash-2": "^1.0.1",
     "express-session": "^1.17.0",
     "form-data": "^3.0.0",
     "fs": "0.0.1-security",
-    "helmet": "^3.23.3",
-    "i18n": "^0.8.5",
-    "jest": "^26.6.3",
+    "helmet": "^4.6.0",
+    "jest": "^26.5.0",
     "method-override": "^3.0.0",
     "morgan": "^1.9.1",
     "mysql": "^2.17.1",
@@ -48,7 +48,26 @@
     "pug": "^3.0.2"
   },
   "devDependencies": {
-    "nodemon": "^2.0.1"
+    "@types/async": "^3.2.6",
+    "@types/bcryptjs": "^2.4.2",
+    "@types/compression": "^1.7.0",
+    "@types/cookie-parser": "^1.4.2",
+    "@types/express": "^4.17.11",
+    "@types/express-fileupload": "^1.1.6",
+    "@types/express-flash-2": "^1.0.6",
+    "@types/express-session": "^1.17.0",
+    "@types/jest": "^26.0.23",
+    "@types/method-override": "^0.0.31",
+    "@types/morgan": "^1.9.2",
+    "@types/mysql": "^2.15.18",
+    "@types/node": "^15.0.2",
+    "@types/nodemailer": "^6.4.1",
+    "@types/passport": "^1.0.6",
+    "@types/passport-strategy": "^0.2.35",
+    "@types/xml2js": "^0.4.8",
+    "nodemon": "^2.0.1",
+    "ts-node": "^9.1.1",
+    "typescript": "^4.2.4"
   },
   "engines": {
     "node": ">= 4.0.0"