demo.config.js

import { nodeResolve } from '@rollup/plugin-node-resolve';
import commonjs from '@rollup/plugin-commonjs';
import typescript from '@rollup/plugin-typescript';
import livereload from 'rollup-plugin-livereload';
import serve from 'rollup-plugin-serve';
import pkg from './package.json';

const liveReloadOpt = {
  watch: ['src', 'demo', 'dist'],
  delay: 300,
};

const serveOptions = {
  // Launch in browser (default: false)
  open: true,
  openPage: '/demo/index.html',
  port: 8080,
}

export default [
  // browser-friendly UMD build
  {
    input: 'src/index.ts',
    output: {
      name: 'cytoscape.js-hyse',
      file: pkg.browser,
      format: 'umd',
      exports: 'auto'
    },
    plugins: [
      nodeResolve(),   // so Rollup can find `ms`
      commonjs(),  // so Rollup can convert `ms` to an ES module
      typescript(),
      serve(serveOptions),
      livereload(liveReloadOpt)
    ]
  },
];