Add path aliases

frontend/tsconfig.json

@@ -20,6 +20,14 @@
     "noUnusedParameters": true,
     "noFallthroughCasesInSwitch": true,
     "noImplicitAny": true,
+    "baseUrl": ".",
+    "types": ["node"],
+    "paths": {
+      "@/*": ["./src/*"],
+      "@components/*": ["./src/components/*"],
+      "@util/*": ["./src/util/*"],
+      "@backend/*": ["../backend/src/*"],
+    }
   },
   "include": ["src"],
   "references": [{ "path": "./tsconfig.node.json" }]