#69 ESLint v9 (#76)

* upgrade deps

* eslint 9

* upgrade deps

* docs; remove redundant deps

eslint.config.mjs

@@ -0,0 +1,46 @@
+import globals from 'globals';
+import tsParser from '@typescript-eslint/parser';
+
+import eslint from '@eslint/js';
+import tseslint from 'typescript-eslint';
+
+import pluginReactHooks from 'eslint-plugin-react-hooks';
+import pluginReactRefresh from 'eslint-plugin-react-refresh';
+
+/**
+ * The ESLint configuration in "flat config" format.
+ *
+ * Note: This configuration uses helper functions from `typescript-eslint`.
+ *
+ * @see {@link https://eslint.org/docs/latest/use/configure/ Configure ESLint}
+ * @see {@link https://typescript-eslint.io/packages/typescript-eslint typescript-eslint}
+ */
+export default tseslint.config(
+  {
+    files: ['**/*.ts', '**/*.tsx'],
+    extends: [eslint.configs.recommended, ...tseslint.configs.recommended],
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+      },
+
+      parser: tsParser,
+    },
+    linterOptions: {
+      reportUnusedDisableDirectives: 'warn',
+    },
+    plugins: {
+      'react-hooks': pluginReactHooks,
+      'react-refresh': pluginReactRefresh,
+    },
+    rules: {
+      'react-refresh/only-export-components': ['warn', { allowConstantExport: true }],
+      '@typescript-eslint/no-empty-object-type': ['error', { allowWithName: 'Props$' }],
+    },
+  },
+  {
+    // global ignores
+    // do not add any other keys to this object
+    ignores: ['coverage/', 'dist/'],
+  },
+);