rollup.config.js

import resolve from 'rollup-plugin-node-resolve';
import babel from 'rollup-plugin-babel';
import commonjs from 'rollup-plugin-commonjs';
import license from 'rollup-plugin-license';
import uglify from 'rollup-plugin-uglify';
import path from 'path';
import pkg from './package.json';

process.env.NODE_ENV = 'production';

const createConfig = ({ umd = false, output } = {}) => ({
  input: 'src/index.js',
  output,
  external: [
    ...Object.keys(umd ? {} : pkg.dependencies || {}),
    ...Object.keys(pkg.peerDependencies || {}),
  ],
  /**
   * suppress false warnings https://github.com/rollup/rollup-plugin-babel/issues/84
   */
  onwarn: () => null,
  plugins: [
    babel(),
    resolve(),
    commonjs({ extensions: ['.js', '.jsx'] }),
    umd && uglify(),
    license({
      banner: {
        file: path.join(__dirname, 'LICENSE'),
      },
    }),
  ].filter(Boolean),
});

export default [
  createConfig({
    output: [
      { file: pkg.main, format: 'cjs' },
      { file: pkg.module, format: 'es' },
    ],
  }),
  createConfig({
    umd: true,
    output: {
      file: pkg.unpkg,
      format: 'umd',
      name: 'ReactTextareaAutocomplete',
    },
  }),
];