rollup.config.js

import svelte from 'rollup-plugin-svelte';
import bundleSize from 'rollup-plugin-bundle-size'
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: 'src/TimePicker.svelte',
    output: [
      { file: pkg.module, 'format': 'es' },
      { file: pkg.main, 'format': 'umd', name: 'TimePicker' }
    ],
    plugins: [
      svelte(),
      commonjs(),
      resolve(),
      terser(),
      bundleSize()
    ]
  }
];