rollup.config.js

import resolve from "@rollup/plugin-node-resolve";
import commonjs from "@rollup/plugin-commonjs";
import babel from "@rollup/plugin-babel";
import { terser } from "rollup-plugin-terser";
import pkg from "./package.json";

export default {
  input: "index.js",
  output: [
    {
      file: pkg.main,
      format: "cjs",
      sourcemap: true,
    },
    {
      file: pkg.module,
      format: "esm",
      sourcemap: true,
    },
  ],
  plugins: [
    resolve({
      customResolveOptions: {
        moduleDirectories: ["node_modules", "common"],
      },
    }),
    commonjs(),
    babel({
      babelHelpers: "bundled",
      exclude: "node_modules/**",
      presets: ["@babel/preset-env"],
    }),
    terser(),
  ],
};