webpack.config.js

const BrowserSyncPlugin = require("browser-sync-webpack-plugin");
const HtmlWebpackPlugin = require("html-webpack-plugin");

module.exports = {
  mode: "development",
  entry: "./src/canvas.js",
  output: {
    path: __dirname + "/dist/",
    filename: "./js/canvas.bundle.js"
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: "babel-loader",
          options: {
            presets: ["env"]
          }
        }
      }
    ]
  },
  plugins: [
    new BrowserSyncPlugin({
      host: "localhost",
      port: 3000,
      server: { baseDir: ["dist"] },
      files: ["./dist/*"]
    }),
    new HtmlWebpackPlugin({
      filename: "index.html",
      template: "src/index.html"
    })
  ],
  watch: true,
  devtool: "source-map"
};