webpack.common.js

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

module.exports = {
  entry: './src/index.js',
  output: {
    filename: 'main.js',
    path: path.resolve(__dirname, 'dist')
  },
  plugins: [
    new CleanWebpackPlugin(['dist']),
    new HtmlWebpackPlugin({
      title: 'Matrix',
      meta: {
        viewport: 'width=device-width, initial-scale=1, shrink-to-fit=no'
      }
    })
  ],
  module: {
    rules: [
      {
        test: /\.m?jsx?$/,
        exclude: /(node_modules)/,
        use: {
          loader: 'babel-loader'
        }
      }
    ]
  }
}