webpack.config.dev.js

const merge = require('webpack-merge');
const webpackConfig = require('./webpack.config');

module.exports = merge(webpackConfig, {

    devtool: 'eval',

    output: {
        pathinfo: true,
        publicPath: '/',
        filename: '[name].js'
    },

    devServer: {
        port: 9000,
        compress: true, // enable gzip compression
        historyApiFallback: true, // true for index.html upon 404, object for multiple paths
        https: false, // true for self-signed, object for cert authority
        noInfo: true, // only errors & warns on hot reload
        host: '0.0.0.0'
    }

});