How Component Metadata Can Serve as a Single Source of Truth in Design Systems

Design systems often drift into inconsistency when the same component facts are maintained across multiple registries, documentation pages, and tooling configs. Vellira addresses this by using machine-readable component metadata as a single canonical contract describing each component's platforms, capabilities, status, and engineering requirements. Generators, documentation tools, completeness checkers, and quality validators all consume this shared contract instead of independently tracking the same information. The metadata schema captures structured facts — such as whether a component supports React Native, requires keyboard handling, or needs focus management — without containing prose or implementation details. This approach keeps automation reliable and reduces the risk of components drifting out of sync as a design system scales.