storybook/docs/_snippets/main-config-stories-with-logic.md

async function findStories() {
  // your custom logic returns a list of files
}

export default {
  // Replace your-framework with the framework you are using (e.g., react-webpack5, vue3-vite)
  framework: '@storybook/your-framework',
  stories: async (list) => [
    ...list,
    // 👇 Add your found stories to the existing list of story files
    ...(await findStories()),
  ],
};

// Replace your-framework with the framework you are using (e.g., react-webpack5, vue3-vite)
import type { StorybookConfig } from '@storybook/your-framework';
import type { StoriesEntry } from '@storybook/types';

async function findStories(): Promise<StoriesEntry[]> {
  // your custom logic returns a list of files
}

const config: StorybookConfig = {
  framework: '@storybook/your-framework',
  stories: async (list: StoriesEntry[]) => [
    ...list,
    // 👇 Add your found stories to the existing list of story files
    ...(await findStories()),
  ],
};

export default config;