Here are some tips about using webpack and Browsersync to improve working speed.

Browsersync

Browsersync makes your browser testing workflow faster by synchronising URLs, interactions and code changes across multiple devices.
npm install browser-sync@2.7.1 -g

Proxy

browser-sync start --proxy localhost:8888 --port 4000 --files index.html --files src/*

Used to proxy ajax request to back-end server.

Webpack

With webpack, don't need require.js and require-react-plugin loading in index.html. Very useful to me.
npm install webpack -g

Work together

npm install -g browser-sync-webpack-plugin And config webpack.config.js:

var BrowserSyncPlugin = require('browser-sync-webpack-plugin');
module.exports = {
entry: './src/js/index.js',
output: {
    publicPath: './dist/',
    path: './dist/',
    filename: 'bundle.js',
    pathinfo: true
},
resolve: {
    root: '.'
},
module: {
    loaders: [
    {test: /\.js/, loader: 'jsx-loader?harmony'}
    ]
},
plugins: [
    new BrowserSyncPlugin({
    host: 'localhost',
    port: 4000,
    proxy: 'localhost:8888',
    files: 'src/*',
    files: 'index.html'
})  
]
};