On cross-road what should be used as source of truth for UI Design Tokens: css, ts, or JSON?
Design tokens require type-checking to ensure valid values across themes. While JSON and Figma lack this, TypeScript, Java, and modern CSS offer structured solutions like APIs, nested classes, and utilities for checks like ADA compliance. Balancing accessibility, structure, and DX is key to effective #DesignToken usage.
https://blog.firsov.net/2025/04/ux-design-token-source-of-truth.html