Rollup config

rollup.config.js

import babel from "rollup-plugin-babel";
import multiInput from "rollup-plugin-multi-input";

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

export default {
  input: ["./src/components/**/*.tsx"],

  external: ["react"],

  plugins: [
    multiInput(),

    // Compile TypeScript/JavaScript files
    babel({ extensions })
  ],

  output: {
    format: "cjs",
    dir: "lib"
  }
};