refactor: change backend to typescript and update types and variables accordingly

frontend/README.md

@@ -4,12 +4,15 @@ This template provides a minimal setup to get React working in Vite with HMR and
 
 Currently, two official plugins are available:
 
-- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Oxc](https://oxc.rs)
-- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/)
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react)
+  uses [Oxc](https://oxc.rs)
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc)
+  uses [SWC](https://swc.rs/)
 
 ## React Compiler
 
-The React Compiler is enabled on this template. See [this documentation](https://react.dev/learn/react-compiler) for more information.
+The React Compiler is enabled on this template. See [this documentation](https://react.dev/learn/react-compiler) for
+more information.
 
 Note: This will impact Vite dev & build performances.
 
@@ -45,31 +48,34 @@ export default defineConfig([
 ])
 ```
 
-You can also install [eslint-plugin-react-x](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-x) and [eslint-plugin-react-dom](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-dom) for React-specific lint rules:
+You can also
+install [eslint-plugin-react-x](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-x)
+and [eslint-plugin-react-dom](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-dom)
+for React-specific lint rules:
 
 ```js
-// eslint.config.js
+// eslint.config.mjs
 import reactX from 'eslint-plugin-react-x'
 import reactDom from 'eslint-plugin-react-dom'
 
 export default defineConfig([
-  globalIgnores(['dist']),
-  {
-    files: ['**/*.{ts,tsx}'],
-    extends: [
-      // Other configs...
-      // Enable lint rules for React
-      reactX.configs['recommended-typescript'],
-      // Enable lint rules for React DOM
-      reactDom.configs.recommended,
-    ],
-    languageOptions: {
-      parserOptions: {
-        project: ['./tsconfig.node.json', './tsconfig.app.json'],
-        tsconfigRootDir: import.meta.dirname,
-      },
-      // other options...
+    globalIgnores(['dist']),
+    {
+        files: ['**/*.{ts,tsx}'],
+        extends: [
+            // Other configs...
+            // Enable lint rules for React
+            reactX.configs['recommended-typescript'],
+            // Enable lint rules for React DOM
+            reactDom.configs.recommended,
+        ],
+        languageOptions: {
+            parserOptions: {
+                project: ['./tsconfig.node.json', './tsconfig.app.json'],
+                tsconfigRootDir: import.meta.dirname,
+            },
+            // other options...
+        },
     },
-  },
 ])
 ```