storybook/scripts/utils/list-examples.js

import { statSync } from 'fs';
import { join } from 'path';

const p = (l) => join(__dirname, '..', '..', 'code', ...l);

export const getDeployables = (files, extraFilter) => {
  return files.filter((f) => {
    const packageJsonLocation = p(['examples', f, 'package.json']);
    let stats = null;
    try {
      stats = statSync(packageJsonLocation);
    } catch (e) {
      // the folder had no package.json, we'll ignore
    }

    return stats && stats.isFile() && extraFilter(packageJsonLocation);
  });
};