RSC Storybook Bridge
Bridge layer for React Server Components inside Storybook — MSW-backed data flows, accessibility reporting, and deterministic test conditions.
Overview
A TypeScript monorepo that solves a real tooling gap: React Server Components are useful in product code, but Storybook's client-first environment can't render them natively. This project builds a reusable bridge layer so RSC-heavy components can be previewed, mocked, tested, and debugged in isolation.
The Problem
Teams using React Server Components lose the speed of component-driven development — Storybook doesn't model server-rendered data, server/client boundaries, or deterministic test conditions. I wanted to answer: how can RSC-heavy UI be developed in isolation without losing the safety nets that mature frontend tooling provides?
What I Built
- 1A TypeScript monorepo (PNPM workspaces) with a reusable core package and a demo Storybook application.
- 2Server, client, and hybrid rendering modes with server-data injection and boundary adapters — so you can write stories for RSCs the same way you write them for client components.
- 3MSW-backed API mocking for deterministic data flows — stories run the same every time, no flaky network dependencies.
- 4Accessibility reporting with fix guidance built into the Storybook panel — a11y issues surface during development, not in review.
- 5Network policy controls to simulate different data-fetching conditions (slow network, error states, empty states) directly from the story.
- 6Deterministic rendering checks — assertions that verify a component renders the same output given the same props, catching non-determinism in server data.
- 7Static export and Vercel-ready deployment so the demo Storybook is always live and shareable.
Key Technical Decisions
Boundary adapters
The bridge wraps RSCs with a thin adapter that intercepts server data injection at the story level. The component under test never knows it's running in Storybook — boundary behavior is identical to production.
MSW-backed mocking
Every story defines its own MSW handler config. Stories are self-contained reproducible scenarios — no shared state, no test order dependencies.
Integrated accessibility reporting
Accessibility checks run in the Storybook panel with specific WCAG failure descriptions and fix guidance — not just pass/fail, but actionable.
Outcome
A working monorepo demonstrating advanced Storybook tooling, RSC architecture knowledge, and developer experience engineering. Shows ability to identify a real tooling problem and build infrastructure around it.
What I Learned
The hardest part was the server/client boundary — Storybook's bundler doesn't understand Next.js's server component model, so the adapter layer had to carefully intercept the right seams without changing component behavior.