webpack.config.js

var webpack = require("webpack");
var path = require('path');

var debug = process.env.NODE_ENV !== "production";

module.exports = {
  context: __dirname,
  devtool: debug ? "inline-sourcemap" : null,
  entry: "./app/static/js/app.js",
  output: {
    path: path.resolve(__dirname, './app/static/js/'),
    filename: "bundle.min.js"
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /(node_modules|bower_components)/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['env']
          }
        }
      }
    ]
  },
  plugins: [
    new webpack.ProvidePlugin({
      $: 'jquery',
      jQuery: 'jquery',
      'window.jQuery': 'jquery',
      Popper: ['popper.js', 'default'],
      // In case you imported plugins individually, you must also require them here:
      Util: "exports-loader?Util!bootstrap/js/dist/util",
      Dropdown: "exports-loader?Dropdown!bootstrap/js/dist/dropdown",
    }),
  ],
};