rollup.config.js

import { nodeResolve } from "@rollup/plugin-node-resolve";
import commonjs from "@rollup/plugin-commonjs";
import css from "rollup-plugin-import-css";

export default {
  input: "src/web.js",
  output: {
    format: "iife",
    file: "public/bundle.js",
    sourcemap: true,
  },
  plugins: [
    nodeResolve({ browser: true, preferBuiltins: false }),
    commonjs(),
    css(),
  ],
};