使用CssModules，

import CssModules from 'react-css-modules'
export default CssModules(demo, require('./demo.styl'))

运行时报如下错误：

Failed to compile.

./src/demo/demo.tsx
Module not found: Can't resolve 'react-css-modules' in '/Users/maolijun298/Documents/demo/h5/mm_h5test/src/demo'

解决办法：

npm install react-css-modules