Improve code quality

Fix lint warnings

.eslintrc.js

@@ -25,5 +25,14 @@ module.exports = {
     'plugin:react/recommended',
     'plugin:react/jsx-runtime',
   ],
-  rules: {},
+  rules: {
+    '@typescript-eslint/no-unused-vars': [
+      'warn',
+      {
+        argsIgnorePattern: '^_',
+        varsIgnorePattern: '^_',
+        caughtErrorsIgnorePattern: '^_',
+      },
+    ],
+  },
 };