React 19 with dependency upgrades

eslint.config.js

@@ -0,0 +1,61 @@
+import js from '@eslint/js';
+import babelParser from '@babel/eslint-parser';
+import reactPlugin from 'eslint-plugin-react';
+import reactHooksPlugin from 'eslint-plugin-react-hooks';
+import jsxA11yPlugin from 'eslint-plugin-jsx-a11y';
+import prettierPlugin from 'eslint-plugin-prettier';
+import globals from 'globals';
+
+export default [
+  js.configs.recommended,
+  {
+    files: ['**/*.{js,jsx}'],
+    languageOptions: {
+      parser: babelParser,
+      ecmaVersion: 'latest',
+      sourceType: 'module',
+      globals: {
+        ...globals.browser,
+        ...globals.node,
+      },
+      parserOptions: {
+        ecmaFeatures: { jsx: true },
+        requireConfigFile: false,
+      },
+    },
+    plugins: {
+      react: reactPlugin,
+      'react-hooks': reactHooksPlugin,
+      'jsx-a11y': jsxA11yPlugin,
+      prettier: prettierPlugin,
+    },
+    rules: {
+      'prettier/prettier': [
+        'error',
+        {
+          endOfLine: 'auto',
+        },
+      ],
+      'react/jsx-uses-react': 'error',
+      'react/jsx-uses-vars': 'error',
+      'react-hooks/rules-of-hooks': 'error',
+      'react-hooks/exhaustive-deps': 'warn',
+      'react/jsx-filename-extension': [1, { extensions: ['.js', '.jsx'] }],
+    },
+    settings: {
+      react: {
+        version: 'detect',
+      },
+    },
+  },
+  // Jest override (still needed for test globals)
+  {
+    files: ['**/*.test.js', '**/__tests__/**/*.js'],
+    languageOptions: {
+      globals: {
+        ...globals.jest,
+        ...globals.node, // for require/global in tests
+      },
+    },
+  },
+];

jest.config.js

@@ -1,4 +1,6 @@
-module.exports = {
-  setupFiles: ['raf/polyfill', './jest.setup.js', './setup/enzymeAdapter.js'],
+export default {
+  setupFilesAfterEnv: ['./jest.setup.js'],
   testEnvironment: 'jsdom',
+  collectCoverage: true,
+  collectCoverageFrom: ['src/**/*.{js,jsx}'],
 };

jest.setup.js

@@ -1 +1,2 @@
+import '@testing-library/jest-dom';
 import 'regenerator-runtime/runtime';