webpack.config.js

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

module.exports = {
  entry:  {
    pathfinding: './src/js/pathfinding.js'
  },
  output: {
    filename: '[name].bundle.js',
    path: path.resolve(__dirname, 'dist')
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env']
          }
        }
      },
      {
        test: /\.css$/,
        use: [{ loader: 'style-loader' }, { loader: 'css-loader' }],
      },
      {
        test: /\.(png|jpg|gif)$/,
        use: [
          {
            loader: 'file-loader'
          },
        ],
      },
    ]
  },

  devServer: {
    contentBase: './dist',
    open: true
  },
  plugins: [
    new HtmlWebpackPlugin({
      title: "Webpack Output",
    }),
    new CleanWebpackPlugin(),
    new webpack.ProvidePlugin({
      "$":"jquery",
      "jQuery":"jquery",
      "window.jQuery":"jquery",
      }),
  ],
};