版本细节：
react-native : 0.21.0
npm: '3.3.6',
node: '5.0.0'
watchman : 4.4.0
当我试图在iOS模拟器中运行我的应用程序时，转换正在挂起..
[2:53:33 PM] <START> transform
transforming [========================================] 100% 508/509
我在模拟器中看到红色错误屏幕，消息为Could not connect to development server..
修改：
[5:15:30 PM] transforming [=======] 100% 507/509transforming: /projects/mobile-examples/index.ios.js
transforming [========================================] 100% 508/509
transforming [========================================] 100% 509/509
[5:35:42 PM] <END> transform (1402427ms)
it took 20 min to transform
看起来像变换问题，任何想法为什么花了这么多时间？
EDIT2：
将我的节点和npm降级到4.0.0和2.x，变压器现在更快了:)