add eslint / prettier

eslint.config.mjs

@@ -0,0 +1,51 @@
+import js from '@eslint/js';
+import reactHooks from 'eslint-plugin-react-hooks';
+import reactRefresh from 'eslint-plugin-react-refresh';
+import globals from 'globals';
+import tseslint from 'typescript-eslint';
+
+export default tseslint.config(
+  {
+    ignores: [
+      'dist',
+      'coverage',
+      'node_modules',
+      '*.config.cjs',
+      'vite.config.js',
+      'vite.config.d.ts',
+    ],
+  },
+  js.configs.recommended,
+  ...tseslint.configs.recommended,
+  {
+    files: ['**/*.{ts,tsx}'],
+    languageOptions: {
+      ecmaVersion: 'latest',
+      sourceType: 'module',
+      globals: {
+        ...globals.browser,
+        ...globals.node,
+      },
+    },
+    rules: {
+      'no-empty': ['error', { allowEmptyCatch: true }],
+    },
+  },
+  {
+    files: ['src/**/*.{ts,tsx}'],
+    plugins: {
+      'react-hooks': reactHooks,
+      'react-refresh': reactRefresh,
+    },
+    rules: {
+      ...reactHooks.configs.recommended.rules,
+      'react-refresh/only-export-components': ['warn', { allowConstantExport: true }],
+    },
+  },
+  {
+    files: ['src/contexts/**/*.{ts,tsx}'],
+    rules: {
+      'react-refresh/only-export-components': 'off',
+    },
+  },
+);