chore: improved vite environment variable import

Author: michaelwenk

web-frontend/src/vite-env.d.ts

@@ -18,6 +18,6 @@
     "jsx": "react-jsx",
     "typeRoots": ["./node_modules/@types"]
   },
-  "include": ["src"],
+  "include": ["src", "vite-env.d.ts"],
   "exclude": ["node_modules"]
 }

web-frontend/tsconfig.json

@@ -0,0 +1,12 @@
+/// <reference types="vite/client" />
+
+interface ImportMetaEnv {
+  readonly VITE_MB3_API_URL: string;
+  readonly VITE_MB3_FRONTEND_URL: string;
+  readonly VITE_MB3_BASE_URL: string;
+}
+
+// eslint-disable-next-line no-unused-vars
+interface ImportMeta {
+  readonly env: ImportMetaEnv;
+}