webpack.dev.js

const HtmlWebpackPlugin = require("html-webpack-plugin");
const { CleanWebpackPlugin } = require("clean-webpack-plugin");
const path = require("path");

module.exports = {
  mode: "development",
  devtool: "source-map",
  entry: "./src/examples/leaflet-draw-example.js",
  output: {
    filename: "bundle[name].js",
    path: path.resolve(__dirname, "dist"),
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        use: ["style-loader", "css-loader"],
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        use: ["file-loader"],
      },
    ],
  },
  resolve: {
    alias: {
      buffer: path.resolve(__dirname, "src/index.js"),
    },
  },
  plugins: [
    new CleanWebpackPlugin(),
    new HtmlWebpackPlugin({
      template: path.resolve(__dirname, "src/examples/index.html"),
      path: path.resolve(__dirname, "dist"),
    }),
  ],
  optimization: {
    usedExports: true,
    runtimeChunk: true,
  },
  devServer: {
    contentBase: path.join(__dirname, "dist"),
    hot: true,
  },
};