webpack.dev.config.js

const webpack = require('webpack');
const path = require('path');
const pkg = require('./package.json');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const htmlWebpackPlugin = new HtmlWebpackPlugin({
  template: path.join(__dirname, 'examples/src/index.html'),
  filename: './index.html'
});
module.exports = {
  entry: path.join(__dirname, 'examples/src/index.js'),
  module: {
    rules: [
      {
        test: /\.(js|jsx)$/,
        use: "babel-loader",
        exclude: /node_modules/
      },
      {
        test: /\.css$/,
        use: ["style-loader", "css-loader"]
      }
    ]
  },
  plugins: [htmlWebpackPlugin, new webpack.DefinePlugin({VERSION: JSON.stringify(pkg.version)})],
  resolve: {
    extensions: ['.js', '.jsx']
  },
  devServer: {
    port: 3333
  }
};