chore(SDK-118): upgrade ESLint to v9 with flat config

Migrate from legacy .eslintrc.js to eslint.config.js using
@react-native/eslint-config/flat, preserving existing rule overrides.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: jferrao-itrbl

.eslintignore

@@ -0,0 +1,70 @@
+const reactNativeConfig = require('@react-native/eslint-config/flat');
+const tsEslintPlugin = require('@typescript-eslint/eslint-plugin');
+const reactPlugin = require('eslint-plugin-react');
+const reactNativePlugin = require('eslint-plugin-react-native');
+const tsdoc = require('eslint-plugin-tsdoc');
+
+const typescriptFiles = ['**/*.ts', '**/*.tsx'];
+const [, tsEslintRecommended, tsRecommended] =
+  tsEslintPlugin.configs['flat/recommended'];
+
+module.exports = [
+  {
+    ignores: ['coverage/**/*', 'lib/**/*', 'docs/**/*'],
+  },
+  ...reactNativeConfig,
+  reactPlugin.configs.flat.recommended,
+  {
+    plugins: {
+      'react-native': reactNativePlugin,
+    },
+    rules: reactNativePlugin.configs.all.rules,
+  },
+  {
+    rules: {
+      'react/react-in-jsx-scope': 'off',
+    },
+  },
+  {
+    ...tsEslintRecommended,
+    files: typescriptFiles,
+  },
+  {
+    ...tsRecommended,
+    files: typescriptFiles,
+  },
+  {
+    files: typescriptFiles,
+    plugins: {
+      tsdoc,
+    },
+    languageOptions: {
+      parserOptions: {
+        project: true,
+        tsconfigRootDir: __dirname,
+      },
+    },
+    rules: {
+      '@typescript-eslint/no-var-requires': [
+        'error',
+        { allow: ['/package\\.json$'] },
+      ],
+      '@typescript-eslint/no-require-imports': [
+        'error',
+        { allow: ['/package\\.json$'] },
+      ],
+      'tsdoc/syntax': 'warn',
+    },
+  },
+  {
+    files: [
+      '**/*.test.{js,ts,tsx}',
+      '**/__mocks__/*',
+      '**/__tests__/*',
+    ],
+    rules: {
+      '@typescript-eslint/no-var-requires': 'off',
+      '@typescript-eslint/no-require-imports': 'off',
+    },
+  },
+];

.eslintrc.js

@@ -87,11 +87,11 @@
     "baseline-browser-mapping": "^2.10.29",
     "commitlint": "^19.6.1",
     "del-cli": "^5.1.0",
-    "eslint": "^8.51.0",
+    "eslint": "^9.39.5",
     "eslint-config-prettier": "^10.1.8",
-    "eslint-plugin-jest": "^28.9.0",
+    "eslint-plugin-jest": "^29.0.1",
     "eslint-plugin-prettier": "^5.0.1",
-    "eslint-plugin-tsdoc": "^0.3.0",
+    "eslint-plugin-tsdoc": "^0.5.2",
     "jest": "^29.7.0",
     "prettier": "^3.0.3",
     "prettier-eslint": "^16.4.2",
@@ -111,7 +111,8 @@
     "typescript": "^5.8.3"
   },
   "resolutions": {
-    "@types/react": "^19.2.0"
+    "@types/react": "^19.2.0",
+    "eslint-plugin-ft-flow": "^3.0.11"
   },
   "peerDependencies": {
     "@react-navigation/native": "*",