add react demo

script/index.ts

@@ -0,0 +1,15 @@
+import fs from 'fs';
+import path from 'path';
+import { program, Command } from './program';
+
+export const root = process.cwd();
+
+export const clearWorkspace = () => {
+  const files = ['submodules', 'packages', 'pnpm-workspace.yaml', 'turbo.json'];
+  for (const file of files) {
+    fs.rmSync(path.join(root, file), { recursive: true, force: true });
+  }
+};
+program.addCommand(new Command('clear').action(clearWorkspace));
+
+program.parse(process.argv);