Storybook

Storybook is an open-source frontend tool for building and documenting UI components. It’s a form of a living style guide, that helps to keep designers' and developers' work in sync.

Storybook stands out from other component documentation tools that we’ve used at Kiwee ( like kss-node) because it uses the actual component implementation to display the component documentation—read more about the differences in our blog post. Not only does it make documenting components much easier for the developers but also allows you to interact with the component directly in the Storybook dashboard, where you can play with the properties, exploring all component states.

We recently had the chance to use Storybook in a Nuxt project with a large number of custom components and well-defined design guidelines. Working in isolation within Storybook allowed developers to build and iterate on components faster than when working directly in the application. It also enabled a useful workflow where a component could be developed, tested, and reviewed in Storybook before the rest of the application was ready to use it—for example, when the data source or an external integration it depended on was still in progress.

Another significant benefit of using Storybook in this project was implementing component-based visual regression tests using BackstopJS. Compared to full-page regression tests, component-level testing proved to be more stable, less flaky, and easier to maintain—while still providing strong protection against visual regression.

Apart from the obvious benefit of providing comprehensive component documentation, Storybook offers many more features that developers can use out of the box—or with minimal configuration—including:

• Snapshot testing.
• Accessibility testing.
• Interaction testing.
• Reusing stories configuration for component tests.

What makes Storybook very flexible is the addons system. Addons are a way to extend Storybook functionality, customize the UI, or integrate Storybook with other tools. The library of existing addons is quite extensive. If you have some specific requirements that are not covered yet, you can also develop you own extension easily.

Because of the additional effort required to maintain Storybook, the decision to add it to the stack should still be conscious and well-thought-out. It works best in projects with a large number of components and clearly defined design guidelines.