Update to latest eslint 9 with neostandard and eslint-plugin-react-hooks

eslint.config.mjs

@@ -0,0 +1,46 @@
+import neostandard from 'neostandard';
+import reactPlugin from 'eslint-plugin-react';
+import reactHooks from 'eslint-plugin-react-hooks';
+
+export default [
+  // Global ignores
+  {
+    ignores: ['src/components/__tests__/**']
+  },
+
+  // neostandard base config, no style rules, browser globals
+  ...neostandard({ noStyle: true, env: ['browser'] }),
+
+  // React recommended rules
+  reactPlugin.configs.flat.recommended,
+  reactPlugin.configs.flat['jsx-runtime'],
+
+  // React hooks recommended rules
+  reactHooks.configs.flat.recommended,
+
+  // Project config
+  {
+    files: ['src/**/*.js'],
+    languageOptions: {
+      parserOptions: {
+        ecmaFeatures: { jsx: true }
+      },
+      globals: {
+        AFRAME: 'readonly',
+        THREE: 'readonly'
+      }
+    },
+    plugins: {
+      react: reactPlugin
+    },
+    settings: {
+      react: { version: 'detect' }
+    },
+    rules: {
+      'no-useless-return': 'off',
+      'no-var': 'off',
+      'object-shorthand': 'off',
+      'prefer-const': 'off'
+    }
+  }
+];