We typically build component libraries in React with TypeScript, styled with Tailwind CSS, using Radix UI primitives for accessible foundations. Design work happens in Figma with shared token libraries that stay in sync with the codebase.
For component development and documentation, we use Storybook. For visual regression testing, we use Chromatic. For accessibility validation, we use axe-core. For interaction and end-to-end testing, we use Playwright.
The specific tooling can be adapted to fit your existing stack and team preferences. What matters most is the architecture and governance, not the specific tools.