improve i18n and typecheck

.vscode/settings.json

@@ -1,3 +1,8 @@
 {
-  "typescript.tsdk": "node_modules/typescript/lib"
-}
+  "typescript.tsdk": "node_modules/typescript/lib",
+  "i18n-ally.localesPaths": [
+    "src/locales/languages"
+  ],
+  "i18n-ally.sourceLanguage": "en-US",
+  "i18n-ally.keystyle": "nested"
+}

eslint.config.mjs

@@ -8,39 +8,51 @@ import { FlatCompat } from "@eslint/eslintrc";
 const __filename = fileURLToPath(import.meta.url);
 const __dirname = path.dirname(__filename);
 const compat = new FlatCompat({
-    baseDirectory: __dirname,
-    recommendedConfig: js.configs.recommended,
-    allConfig: js.configs.all
+  baseDirectory: __dirname,
+  recommendedConfig: js.configs.recommended,
+  allConfig: js.configs.all,
 });
 
-export default [...compat.extends(
+export default [
+  ...compat.extends(
     "plugin:react/recommended",
     "plugin:@typescript-eslint/recommended",
     "plugin:prettier/recommended",
-), {
+  ),
+  {
     plugins: {
-        "@typescript-eslint": typescriptEslint,
+      "@typescript-eslint": typescriptEslint,
     },
 
     languageOptions: {
-        parser: tsParser,
-        ecmaVersion: 2020,
-        sourceType: "module",
+      parser: tsParser,
+      ecmaVersion: 2020,
+      sourceType: "module",
 
-        parserOptions: {
-            ecmaFeatures: {
-                jsx: true,
-            },
+      parserOptions: {
+        ecmaFeatures: {
+          jsx: true,
         },
+      },
     },
 
     settings: {
-        react: {
-            version: "detect",
-        },
+      react: {
+        version: "detect",
+      },
     },
 
     rules: {
-        "@typescript-eslint/no-var-requires": 0,
+      "@typescript-eslint/no-var-requires": 0,
+
+      "@typescript-eslint/no-unused-vars": [
+        "warn",
+        {
+          argsIgnorePattern: "^_",
+          varsIgnorePattern: "^_",
+          caughtErrorsIgnorePattern: "^_",
+        },
+      ],
     },
-}];
+  },
+];

i18next.d.ts

@@ -0,0 +1,17 @@
+// import the original type declarations
+import "i18next";
+// import all namespaces (for the default language, only)
+import common from "./src/locales/languages/en-US.json";
+
+declare module "i18next" {
+  // Extend CustomTypeOptions
+  interface CustomTypeOptions {
+    // custom namespace type, if you changed it
+    defaultNS: "common";
+    // custom resources type
+    resources: {
+      common: typeof common;
+    };
+    // other
+  }
+}

package.json

@@ -39,18 +39,18 @@
     "@types/file-saver": "^2.0.7",
     "@types/jest": "^29.5.14",
     "@types/node": "^22.10.2",
-    "@types/react": "^19.0.1",
+    "@types/react": "^19.0.2",
     "@types/react-dom": "^19.0.2",
-    "@typescript-eslint/eslint-plugin": "^8.18.0",
-    "@typescript-eslint/parser": "^8.18.0",
+    "@typescript-eslint/eslint-plugin": "^8.18.2",
+    "@typescript-eslint/parser": "^8.18.2",
     "browserslist": "^4.24.3",
     "copy-webpack-plugin": "^12.0.2",
     "css-loader": "^7.1.2",
     "css-minimizer-webpack-plugin": "^7.0.0",
     "eslint": "^9.17.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-prettier": "^5.2.1",
-    "eslint-plugin-react": "^7.37.2",
+    "eslint-plugin-react": "^7.37.3",
     "express": "^5.0.1",
     "file-loader": "^6.2.0",
     "html-webpack-plugin": "^5.6.3",
@@ -69,30 +69,30 @@
     "typescript-plugin-css-modules": "^5.1.0",
     "webpack": "^5.97.1",
     "webpack-bundle-analyzer": "^4.10.2",
-    "webpack-cli": "^5.1.4",
+    "webpack-cli": "^6.0.1",
     "webpack-dev-server": "^5.2.0",
     "webpack-image-resize-loader": "^5.0.0",
     "webpack-merge": "^6.0.1",
     "workbox-webpack-plugin": "^7.3.0"
   },
   "dependencies": {
-    "@tanstack/react-query": "^5.62.7",
+    "@tanstack/react-query": "^5.62.10",
     "@uidotdev/usehooks": "^2.4.1",
     "chart.js": "^4.4.7",
     "chartjs-adapter-date-fns": "^3.0.0",
     "chartjs-plugin-zoom": "^2.2.0",
     "date-fns": "^4.1.0",
     "file-saver": "^2.0.5",
     "i18n-iso-countries": "^7.13.0",
-    "i18next": "^24.1.0",
+    "i18next": "^24.2.0",
     "i18next-browser-languagedetector": "^8.0.2",
     "i18next-resources-to-backend": "^1.2.1",
     "mini-css-extract-plugin": "^2.9.2",
     "react": "^19.0.0",
     "react-chartjs-2": "^5.2.0",
     "react-dom": "^19.0.0",
     "react-i18next": "^15.2.0",
-    "react-router": "^7.0.2",
+    "react-router": "^7.1.1",
     "regenerator-runtime": "^0.14.1",
     "web-vitals": "^4.2.4"
   }