fix(eslint): fix eslint errors

* Fix no-unused-vars
* Add a rule for `*.config.mjs` files.
* Install `@types/node` for `process.*`

eslint.config.mjs

@@ -17,4 +17,10 @@ export default [
       'sort-keys': 'error',
     },
   },
+  {
+    files: ['*.config.mjs'],
+    rules: {
+      'import/no-default-export': 'off',
+    },
+  },
 ];

eslint/flat/next.js

@@ -9,7 +9,7 @@ const babelOptions = {
     try {
       require.resolve('next/babel');
       return ['next/babel'];
-    } catch (e) {
+    } catch {
       return [];
     }
   })(),

eslint/next.js

@@ -8,7 +8,7 @@ const babelOptions = {
     try {
       require.resolve('next/babel');
       return ['next/babel'];
-    } catch (e) {
+    } catch {
       return [];
     }
   })(),

eslint/utils/require-package.js

@@ -18,7 +18,7 @@ function readPackageManager() {
 module.exports = (configName, packageName) => {
   try {
     require.resolve(packageName);
-  } catch (e) {
+  } catch {
     const packageManager = readPackageManager();
     const command = packageManager === 'yarn' ? 'add' : 'install';
 

package.json

@@ -66,6 +66,7 @@
     "@commitlint/cli": "^19.0.3",
     "@commitlint/config-conventional": "^19.0.3",
     "@semantic-release/git": "^10.0.1",
+    "@types/node": "^22.9.0",
     "eslint": "^9.14.0",
     "husky": "^9.0.11",
     "lint-staged": "^15.2.2",