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Storybook

UI component development and documentation workshop

⬱ NIVÅ 3Tekniskt
Medel
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2 mÄnader
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KarriÀrer
I korthet

Storybook is the industry-standard tool for component-driven UI development, enabling teams to build, test, and document components in isolation. Career path: Junior Frontend Developer ($100-125k, basic stories with controls/args, 2-3 months) → Senior Component Engineer ($140-180k, Chromatic CI, play functions, custom addons, 3-5 months) → Design System Lead ($170k+, enterprise architecture, visual regression suites, 5-7 months). Salary premium: +$10-25k above base frontend roles. Tools: Storybook 8+, Chromatic, addon-a11y, addon-controls, addon-docs, MSW for API mocking, Vite/Webpack, Story Composition, Test Runner. Essential for design systems; supplementary for feature development.

Vad Àr Storybook

Storybook is the industry-standard Component Story Format (CSF) development and documentation tool for building, testing, and showcasing UI components in isolation. It's a browser-based environment where you develop a component outside its application context, with controls to interactively modify props, observe state changes, and verify accessibility. Every story is a use case: a Button story might show default state, loading, disabled, and error states. Storybook serves five audiences simultaneously: developers (building components), designers (reviewing designs before code), QA (testing component variations), PMs (understanding feature completeness), and documentation generators (auto-generating component API docs). In 2026, Storybook has matured from "nice-to-have documentation" to business-critical infrastructure for design systems and component-driven teams. Version 8+ adds React Server Components support, improving framework coverage. Complementary tools, Chromatic (visual regression testing), interaction tests (play functions), accessibility audits (addon-a11y), transform Storybook from static docs into living, tested specifications. Teams using Storybook systematically report 15-25% faster component development, higher consistency across products, and stronger design-engineering collaboration.

🔧 VERKTYG & EKOSYSTEM
Storybook 8Chromaticaddon-a11yaddon-controlsaddon-docsMSW for API mockingViteWebpackStory CompositionTest Runneraddon-coverageaddon-interactions

💰 Lön per region

OmrÄdeNybörjareMidErfaren
USA$105k$145k$190k
UKÂŁ65kÂŁ90kÂŁ120k
EU€70k€95k€130k
CANADAC$115kC$155kC$205k

❓ Vanliga frĂ„gor

When should I use Storybook vs just testing components in my app?
Storybook isolates components from your application context, letting you develop and test them independently. This catches bugs faster, improves reusability, and creates living documentation. Use Storybook for: design system documentation, complex component libraries, visual regression testing. Skip for: simple one-off components in a monolithic app. Best practice: write stories as you build components, not after.
How do design systems benefit from Storybook?
Storybook becomes your single source of truth for component APIs, variations, and usage. Teams reference Storybook instead of hunting through code. Addons like addon-docs auto-generate prop tables; Chromatic tracks visual changes across versions. Design systems at scale (Shopify, BBC, Airbnb) all use Storybook for governance and consistency.
What is Chromatic and why should I use it?
Chromatic is Storybook's visual regression testing service. It captures screenshots of every story, detects visual changes on every commit, and prevents regressions from reaching production. Integrates with CI/CD (GitHub, GitLab, etc.). Cost: ~$5-10/month per project. Alternative: self-host visual tests with Percy or BackstopJS, but Chromatic is optimized for Storybook.
How do I mock APIs in Storybook with MSW?
Mock Service Worker (MSW) intercepts fetch/axios calls in your stories without modifying component code. Set up MSW handlers in a .storybook/mocks.ts file, then use in play functions to simulate API responses. Enables realistic story testing without a real backend. Example: play: async ({ canvasElement }) => { msw.use(http.get('/api/users', () => ...)); }
What is the difference between args, controls, and play functions?
Args: component props passed to stories (e.g. { label: 'Click me' }). Controls: UI inputs in Storybook to modify args interactively (e.g. text field, toggle, color picker). Play functions: automated interactions (clicking, typing, assertions) that run after story renders. Use together: args define defaults, controls let users explore, play functions test behavior.
Should I write visual tests or interaction tests first?
Visual tests (Chromatic screenshots) catch layout/style regressions; interaction tests (play functions + assertions) verify behavior. Start with play functions during development (faster feedback), add Chromatic for design system governance (slower CI, but catches visual drift). For enterprise: both (play tests in CI + Chromatic on main branch).
How does Storybook handle React Server Components?
Storybook 8+ supports React Server Components in preview. Client Components work naturally; for Server Components, use mock decorators or isolate client wrappers. Not all RSC features (streaming, Suspense) work in Storybook, test data fetching in Next.js app directly. Storybook excels at Client Components; use app integration tests for Server Component behavior.

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