rollup.config.js

import typescript from "rollup-plugin-typescript2";
import commonjs from "@rollup/plugin-commonjs";
import postcss from "rollup-plugin-postcss";
import external from "rollup-plugin-peer-deps-external";
import resolve from "@rollup/plugin-node-resolve";
import { terser } from "rollup-plugin-terser";

import pkg from "./package.json";

export default {
  input: "src/index.tsx",
  output: [
    {
      file: pkg.main,
      format: "cjs",
      exports: "named",
      sourcemap: true
    },
    {
      file: pkg.module,
      format: "es",
      exports: "named",
      sourcemap: true
    }
  ],
  plugins: [
    external(),
    postcss({
      extract: false,
      use: ['sass'],
    }),
    resolve(),
    typescript({
      rollupCommonJSResolveHack: true,
      exclude: "**/__tests__/**",
      clean: true
    }),
    commonjs(),
    terser()
  ]
};