webpack.config.dev.js

const HtmlWebpackPlugin = require('html-webpack-plugin');
const CleanWebpackPlugin = require('clean-webpack-plugin');
const webpack = require('webpack');

let path = require('path');

module.exports = {
  entry: {
    main: './src/index.js'
  },
  output: {
    path: path.resolve(__dirname, '/dist'),
    filename: 'index.js'
  },
  devServer: {
    port: 9000,
    headers: {
      'Access-Control-Allow-Origin': '*',
      // 'Access-Control-Allow-Origin': 'http://rinkeby.infura.io'
    },
    publicPath: '/dist/',
    hot: true,
  },
  devtool: 'inline-source-map',
  plugins: [
    // new CleanWebpackPlugin(['dist']),
    // new HtmlWebpackPlugin({
    //   title: 'Meme Lordz',
    //   meta: {
    //     name: 'viewport',
    //     content: 'width=device-width,initial-scale=1.0'
    //   }
    // })
    new webpack.HotModuleReplacementPlugin()
  ],
  module: {
    rules: [
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader']
      },
      {
        test: /\.js$/,
        // include: path.resolve(__dirname, 'src'),
        exclude: /(node_modules|bower_components|build)/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['env'],
            plugins: [
              require('babel-plugin-transform-runtime'),
              require('babel-plugin-transform-es2015-arrow-functions'),
              require('babel-plugin-transform-object-rest-spread'),
              require('babel-plugin-transform-class-properties'),
              require('babel-plugin-transform-react-jsx'),
              require('react-hot-loader/babel')
            ]
          }
        }
      }
    ]
  }
};