rollup.config.js

import merge from 'deepmerge';
// use createSpaConfig for bundling a Single Page App
import { createSpaConfig } from '@open-wc/building-rollup';
import { nodeResolve } from '@rollup/plugin-node-resolve';
// import copy from 'rollup-plugin-copy';

// use createBasicConfig to do regular JS to JS bundling
// import { createBasicConfig } from '@open-wc/building-rollup';

const baseConfig = createSpaConfig({
  // use the outputdir option to modify where files are output
  // outputDir: 'dist',

  // if you need to support older browsers, such as IE11, set the legacyBuild
  // option to generate an additional build just for this browser
  // legacyBuild: true,

  // development mode creates a non-minified build for debugging or development
  developmentMode: process.env.ROLLUP_WATCH === 'true',

  // set to true to inject the service worker registration into your index.html
  injectServiceWorker: true,
});

export default merge(baseConfig, {
  // if you use createSpaConfig, you can use your index.html as entrypoint,
  // any <script type="module"> inside will be bundled by rollup
  input: './index.html',

  plugins: [nodeResolve()],
  // plugins: [
  //   copy({
  //     targets: [
  //       {
  //         src: 'packages/application/assets/images/**/*.svg',
  //         dest: 'dist/images',
  //       },
  //     ],
  //     // set flatten to false to preserve folder structure
  //     flatten: false,
  //   }),
  // ],
});