rollup.config.js

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

export default [
  {
    input: 'js/index.js',
    output: {
      name: 'SRE',
      file: pkg.browser,
      format: 'umd'
    },
    plugins: [
      resolve(),
      commonjs(),
      terser()
    ]
  }
];