basic config for webpack

webpack.base.js

const path = require('path');
/*
 * Webpack Plugins
 */
// const webpack = require('webpack');
// const CopyWebpackPlugin = require('copy-webpack-plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const ExtractTextPlugin = require('extract-text-webpack-plugin');

module.exports = {
  /*
   * Cache generated modules and chunks to improve performance for multiple incremental builds.
   * This is enabled by default in watch mode.
   * You can pass false to disable it.
   *
   * See: http://webpack.github.io/docs/configuration.html#cache
   * cache: false,
   *
   * The entry point for the bundle
   * Our Angular.js app
   *
   * See: http://webpack.github.io/docs/configuration.html#entry
   */
  entry: [
    // 'webpack-hot-middleware/client?path=http://localhost:8888/__webpack_hmr',
    'webpack-dev-server/client?http://localhost:8888/',
    './src/js/index.js'
  ],
  /*
   * Options affecting the resolving of modules.
   *
   * See: http://webpack.github.io/docs/configuration.html#resolve
   */
  resolve: {
    /*
     * An array of extensions that should be used to resolve modules.
     *
     * See: http://webpack.github.io/docs/configuration.html#resolve-extensions
     */
    extensions: ['', '.js'],
    // Make sure root is src
    // root: helpers.root('src'),
    // remove other default values
    modulesDirectories: ['node_modules']
  },
  /*
   * Options affecting the normal modules.
   *
   * See: http://webpack.github.io/docs/configuration.html#module
   */
  module: {
    /*
     * An array of applied pre and post loaders.
     *
     * See: http://webpack.github.io/docs/configuration.html#module-preloaders-module-postloaders
     */
    // preLoaders: [{
    //   test: /\.js$/,
    //   loader: 'eslint',
    //   exclude: /node_modules/
    // }],
    /*
     * An array of automatically applied loaders.
     *
     * IMPORTANT: The loaders here are resolved relative to the resource which they are applied to.
     * This means they are not resolved relative to the configuration file.
     *
     * See: http://webpack.github.io/docs/configuration.html#module-loaders
     */
    loaders: [

      {
        test: /\.js$/,
        loader: 'babel-loader',
        query: {
          presets: ['es2015']
        },
        exclude: /node_modules/
      },
      /*
       * Json loader support for *.json files.
       *
       * See: https://github.com/webpack/json-loader
       */
      {
        test: /\.json$/,
        loader: 'json-loader'
      },
      /*
       * Raw loader support for *.css files
       * Returns file content as string
       *
       * See: https://github.com/webpack/raw-loader
       */
      // {
      //   test: /\.css$/,
      //   loader: 'raw!style!css'
      // },
      // Extract css files
      {
        test: /\.css$/,
        loader: ExtractTextPlugin.extract(['style', 'css']),
        include: path.join(__dirname, '../src/styles/index.css')
      }, {
        test: /\.sass$/,
        loader: ExtractTextPlugin.extract('style-loader', 'css-loader', 'sass-loader')
      }, {
        test: /\.less$/,
        loader: ExtractTextPlugin.extract('style-loader', 'css-loader!less-loader')
      }, {
        test: /.(png|woff(2)?|eot|ttf|svg)(\?[a-z0-9=\.]+)?$/,
        loader: 'url-loader?limit=100000'
      }
    ]
  },
  plugins: [
    /*
     * Plugin: HtmlWebpackPlugin
     * Description: Simplifies creation of HTML files to serve your webpack bundles.
     * This is especially useful for webpack bundles that include a hash in the filename
     * which changes every compilation.
     *
     * See: https://github.com/ampedandwired/html-webpack-plugin
     */
    new HtmlWebpackPlugin({
      template: 'src/index.html'
    }),
    new ExtractTextPlugin('style.css')

  ],
  /*
   * Include polyfills or mocks for various node stuff
   * Description: Node configuration
   *
   * See: https://webpack.github.io/docs/configuration.html#node
   */
  node: {
    global: 'window',
    crypto: 'empty',
    module: false,
    clearImmediate: false,
    setImmediate: false
  }
};

webpack.dev.js

const path = require('path');

const webpack = require('webpack'); // used to merge webpack configs
const webpackMerge = require('webpack-merge'); // used to merge webpack configs
const baseConfig = require('./webpack.base');

const METADATA = {
  host: 'localhost',
  port: 8888,
  outputPath: path.resolve(__dirname, '../src')
};

/**
 * Webpack configuration
 *
 * See: http://webpack.github.io/docs/configuration.html#cli
 */
module.exports = webpackMerge(baseConfig, {
  /**
   * Switch loaders to debug mode.
   *
   * See: http://webpack.github.io/docs/configuration.html#debug
   */
  debug: true,

  /**
   * Developer tool to enhance debugging
   *
   * See: http://webpack.github.io/docs/configuration.html#devtool
   * See: https://github.com/webpack/docs/wiki/build-performance#sourcemaps
   */
  // devtool: 'cheap-module-eval-source-map',
  devtool: 'source-map',
  /**
   * Options affecting the output of the compilation.
   *
   * See: http://webpack.github.io/docs/configuration.html#output
   */
  output: {

    /**
     * The output directory as absolute path (required).
     *
     * See: http://webpack.github.io/docs/configuration.html#output-path
     */
    path: METADATA.outputPath,

    /**
     * Specifies the name of each output file on disk.
     * IMPORTANT: You must not specify an absolute path here!
     *
     * See: http://webpack.github.io/docs/configuration.html#output-filename
     */
    filename: 'index.build.js',

    /**
     * The filename of the SourceMaps for the JavaScript files.
     * They are inside the output.path directory.
     *
     * See: http://webpack.github.io/docs/configuration.html#output-sourcemapfilename
     */
    sourceMapFilename: '[name].map',

    /** The filename of non-entry chunks as relative path
     * inside the output.path directory.
     *
     * See: http://webpack.github.io/docs/configuration.html#output-chunkfilename
     */
    chunkFilename: '[id].chunk.js'

  },

  plugins: [
    new webpack.optimize.OccurenceOrderPlugin(true),
    new webpack.NoErrorsPlugin()
  ],

  /**
   * Webpack Development Server configuration
   * Description: The webpack-dev-server is a little node.js Express server.
   * The server emits information about the compilation state to the client,
   * which reacts to those events.
   *
   * See: https://webpack.github.io/docs/webpack-dev-server.html
   */
  devServer: {
    port: METADATA.port,
    host: METADATA.host,

    hot: true,

    inline: true,
    historyApiFallback: true,

    colors: true,
    stats: 'normal',
    progress: true,

    open: true,

    watchOptions: {
      aggregateTimeout: 300,
      poll: 1000
    },

    outputPath: METADATA.outputPath,
    contentBase: 'src/'
  }
}, baseConfig);

webpack.prod.js

// Empty