webpack's watch and hot replace is invalid when use brfs

[Pines-Cheng]

I use brfs like this:

var examples = {
  basic: require('fs').readFileSync(__dirname + '/01-basic.js', 'utf-8'),
};

and when I modify the file of 01-basic.js, the watch and auto compile and hot-replace is invalid.
In addition ,I use the webpack-dev-server.
The only way to resolve this problem is Ctrl + Cto stop ,and run npm start again.
This is too inconvenient to work effectively,Does someone has the solution?