Including a test harness for it, and making sure the cursor is always at the end.

packages/cli/vitest.config.ts

@@ -0,0 +1,22 @@
+import { defineConfig } from 'vitest/config';
+import react from '@vitejs/plugin-react'; // For JSX support
+import path from 'path'; // Import path
+
+export default defineConfig({
+  root: path.resolve(__dirname), // Explicitly set root to the current directory (packages/cli)
+  plugins: [react()], // Add React plugin for JSX/TSX
+  test: {
+    globals: true, // Use global APIs (describe, test, expect, vi)
+    environment: 'jsdom', // Changed environment to jsdom
+    // More specific include pattern to find the test file
+    include: ['src/**/*.test.{ts,tsx}'],
+    // Add setup files if needed (e.g., for global mocks, testing-library config)
+    // setupFiles: './src/test/setup.ts',
+    mockReset: true, // Reset mocks between tests
+    clearMocks: true, // Clear mock history between tests
+    alias: {
+      // Add path aliases if you use them in your src code
+      // Example: '@/*': path.resolve(__dirname, './src/*'),
+    },
+  },
+});