Typing lessons like duolingo & musicmouse cleanup

web/package.json

@@ -7,7 +7,7 @@
     "dev": "vite",
     "build": "tsc -b && vite build",
     "preview": "vite preview",
-    "check": "tsc -b --noEmit false --emitDeclarationOnly false && eslint . || tsc -b",
+    "check": "tsc -b && eslint .",
     "test": "vitest run"
   },
   "dependencies": {
@@ -15,10 +15,16 @@
     "react-dom": "^19.2.0"
   },
   "devDependencies": {
+    "@eslint/js": "^9.39.5",
     "@types/react": "^19.2.0",
     "@types/react-dom": "^19.2.0",
     "@vitejs/plugin-react": "^5.0.0",
+    "eslint": "^9.39.5",
+    "eslint-plugin-react-hooks": "^5.2.0",
+    "eslint-plugin-react-refresh": "^0.4.26",
+    "globals": "^15.15.0",
     "typescript": "^5.9.0",
+    "typescript-eslint": "^8.70.0",
     "vite": "^7.1.0",
     "vitest": "^3.2.0"
   },