Fix an issue where types/react was a different version from our main … (#231)

Co-authored-by: Brandon Keiji <brandonkeiji@google.com>

packages/cli/package.json

@@ -45,12 +45,14 @@
     "yargs": "^17.7.2"
   },
   "devDependencies": {
+    "@testing-library/react": "^14.0.0",
     "@types/diff": "^7.0.2",
     "@types/dotenv": "^6.1.1",
     "@types/node": "^20.11.24",
-    "@types/react": "^19.1.0",
+    "@types/react": "^18.3.1",
     "@types/shell-quote": "^1.7.5",
     "@types/yargs": "^17.0.32",
+    "jsdom": "^26.1.0",
     "typescript": "^5.3.3",
     "vitest": "^3.1.1"
   },

packages/cli/vitest.config.ts

@@ -0,0 +1,15 @@
+/**
+ * @license
+ * Copyright 2025 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/// <reference types="vitest" />
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    environment: 'jsdom',
+    globals: true, // Optional: enables global APIs like describe, it, expect
+  },
+});