#FAQ

#Deploy Storybook to a subdirectory or subpath

The default Vite and webpack builders emit relative asset paths, but Rsbuild recommends absolute paths for deployment (see the asset prefix tips). To deploy Storybook at https://example.com/sb-path, set output.assetPrefix.

const config: StorybookConfig = {
  // --snip--
  rsbuildFinal: (config) => {
+   config.output ??= {}
+   config.output.assetPrefix = '/sb-path/'
    return config
  },
  // --snip--
}

#Build errors from unexpected files

Older Rspack versions bundled every matching file because webpackInclude was not yet available. Use rspack.IgnorePlugin to exclude files that shouldn't be part of your stories (for example, Markdown).

// .storybook/main.js
import path from 'path'
import { mergeRsbuildConfig } from '@rsbuild/core'

export default {
  framework: 'storybook-react-rsbuild',
  async rsbuildFinal(config) {
    return mergeRsbuildConfig(config, {
      tools: {
        rspack: (config, { addRules, appendPlugins, rspack, mergeConfig }) => {
          return mergeConfig(config, {
            plugins: [
              new rspack.IgnorePlugin({
                checkResource: (resource, context) => {
                  const absPathHasExt = path.extname(resource)
                  if (absPathHasExt === '.md') {
                    return true
                  }

                  return false
                },
              }),
            ],
          })
        },
      },
    })
  },
}

#Why do sandboxes use getAbsolutePath to resolve the framework?

See Storybook's FAQ for the explanation.

#How can I inspect the Rsbuild or Rspack config used by Storybook?

Rsbuild offers a CLI debug mode. Enable it when running Storybook to dump the generated configuration paths.

In development:

DEBUG=rsbuild storybook dev

In production:

DEBUG=rsbuild storybook build

Check the CLI output to see where the Rsbuild and Rspack configs are written.

#Can I use this builder with Rspack directly?

Yes. Rsbuild is built on Rspack, so you can feed your Rspack configuration into the Rsbuild builder. Follow the Rspack integration guide to learn how.