webpack.config.dev.js

import webpack from 'webpack';
import HardSourceWebpackPlugin from 'hard-source-webpack-plugin';
import HtmlWebpackPlugin from 'html-webpack-plugin';
import ExtractTextPlugin from 'extract-text-webpack-plugin';
import path from 'path';
import autoprefixer from 'autoprefixer';

const inProject = path.resolve.bind(path, __dirname);


export default {
  resolve: {
    modules: [
      inProject('src'),
      'node_modules',
    ],
    extensions: ['*', '.js', '.jsx', '.json'],
  },
  devtool: 'cheap-module-eval-source-map',
  entry: [
    './tools/webpack-public-path',
    'react-hot-loader/patch',
    'webpack-hot-middleware/client?reload=true',
    path.resolve(__dirname, 'src/index.js'),
  ],
  target: 'web',
  mode: 'development',
  output: {
    path: path.resolve(__dirname, 'dist'),
    publicPath: '/',
    filename: 'bundle.js',
  },
  plugins: [
    new HardSourceWebpackPlugin(),
    new webpack.HotModuleReplacementPlugin(),
    new webpack.NoEmitOnErrorsPlugin(),
    new HtmlWebpackPlugin({
      template: 'src/index.ejs',
      minify: {
        removeComments: true,
        collapseWhitespace: true,
      },
      inject: true,
    }),
    new ExtractTextPlugin({
      filename: 'styles/[name].css',
    }),
  ],
  module: {
    rules: [
      {
        test: /\.jsx?$/,
        exclude: /node_modules/,
        use: ['babel-loader'],
      },
      {
        test: /\.(jpe?g|png|gif|ico)$/i,
        use: [
          {
            loader: 'file-loader',
            options: {
              name: '[name].[ext]',
            },
          },
        ],
      },
      {
        test: /(\.css|\.scss|\.sass)$/,
        use: [
          'style-loader',
          {
            loader: 'css-loader',
            options: {
              sourceMap: true,
            },
          },
          {
            loader: 'postcss-loader',
            options: {
              plugin: () => [
                autoprefixer,
              ],
              sourceMap: true,
            },
          },
          {
            loader: 'sass-loader',
            options: {
              includePaths: [
                path.resolve('src'),
                path.resolve('src', 'styles'),
              ],
              sourceMap: true,
            },
          },
        ],
      },
    ],
  },
};