ERROR in ./src/client/pages/index.tsx Module not found: Error: Can't resolve '../components/Hello' in '/Users/liujianchuan/Github/frame/src/client/pages' @ ./src/client/pages/index.tsx 5:16-46
原因webpack.config.js配置错误，resolve需要指点文件类型，如下：
resolve: {
extensions: [ '.ts', '.tsx', '.js', '.json']
},