development.js

const webpackMerge = require('webpack-merge');
const  webpack = require('webpack')

const commonConfig = require('./base.js');
const  path = require('path')

const  publicPath = '/'
process.env.NODE_ENV = 'development';

module.exports = function (env) {
  console.log('dev')
  console.log(env)
  return webpackMerge(commonConfig(), {
    devtool: 'cheap-module-source-map',
    plugins: [
      new webpack.DefinePlugin({
        'process.env': {
          'NODE_ENV': JSON.stringify('development'),
          'BABEL_ENV': JSON.stringify('development')
        }
      })
    ],
    devServer: {
      port: 3000,
      host: 'localhost',
      historyApiFallback: true,
      noInfo: false,
      stats: 'minimal',
      publicPath: publicPath
    }
  })
}