Function createParcel

packages/dev/storybook-builder-parcel/preset.mjs:108–142

(options, isDev = false)

//   - a synthetic `stories.js` virtual module emitted for each `story:` glob
//     dependency (lives in Parcel's module graph, not on disk)
async function createParcel(options, isDev = false) {
  fs.mkdirSync(generatedEntries, {recursive: true});
  fs.writeFileSync(
    path.join(generatedEntries, 'iframe.html'),
    await generateIframeModern(options, generatedEntries)
  );
  fs.writeFileSync(path.join(generatedEntries, 'setup-addons.js'), generateSetupAddons());
  fs.writeFileSync(
    path.join(generatedEntries, 'preview-main.js'),
    await generatePreviewModern(options, generatedEntries)
  );

  return new Parcel({
    entries: path.join(generatedEntries, 'iframe.html'),
    config: path.resolve(options.configDir, '.parcelrc'),
    mode: isDev ? 'development' : 'production',
    serveOptions: isDev ? {port: 3000} : null,
    hmrOptions: isDev ? {port: 3001} : null,
    additionalReporters: [{packageName: '@parcel/reporter-cli', resolveFrom: __filename}],
    targets: {
      storybook: {
        distDir: options.outputDir,
        publicUrl: './',
        engines: {
          browsers: [
            'last 2 Chrome version',
            'last 2 Safari versions',
            'last 2 Edge version',
            'last 2 Firefox versions'
          ]
        }
      }
    }
  });
}