fix: Fix ios example error.

scripts/bootstrap.js

@@ -0,0 +1,29 @@
+const os = require('os');
+const path = require('path');
+const child_process = require('child_process');
+
+const root = path.resolve(__dirname, '..');
+const args = process.argv.slice(2);
+const options = {
+  cwd: process.cwd(),
+  env: process.env,
+  stdio: 'inherit',
+  encoding: 'utf-8',
+};
+
+if (os.type() === 'Windows_NT') {
+  options.shell = true;
+}
+
+let result;
+
+if (process.cwd() !== root || args.length) {
+  // We're not in the root of the project, or additional arguments were passed
+  // In this case, forward the command to `yarn`
+  result = child_process.spawnSync('yarn', args, options);
+} else {
+  // If `yarn` is run without arguments, perform bootstrap
+  result = child_process.spawnSync('yarn', ['bootstrap'], options);
+}
+
+process.exitCode = result.status;