rollup.config.js

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

const extensions = [".js", ".jsx", ".ts", ".tsx"];

const name = "RoomFinder";

export default {
  input: "./src/index.ts",

  // Specify here external modules which you don't want to include in your bundle (for instance: 'lodash', 'moment' etc.)
  // https://rollupjs.org/guide/en#external-e-external
  external: [],

  plugins: [
    // Allows node_modules resolution
    resolve({ extensions }),

    // Allow bundling cjs modules. Rollup doesn't understand cjs
    commonjs(),

    // Compile TypeScript/JavaScript files
    babel({ extensions, include: ["src/**/*"] }),

    // Minify
    terser(),
  ],

  output: [
    {
      file: pkg.main,
      format: "umd",
      name,
    },
    {
      file: pkg.module,
      format: "es",
    },
  ],
};