Baseline only
A feature is fair game the moment it reaches Baseline newly available — shipped in all four core browsers — rather than 30 months later at widely available. With no polyfills and no fallbacks it runs only on current browsers — it did not drop the old ones, it never ran on them.
Always on the latest React
React 19 and Server Components are assumed, and each new idiom is adopted as it lands. No compatibility path is kept around, so there is only ever one way to write it.
TypeScript safe
Types are not there to check what you wrote after the fact — they are there to make the mistake unwritable. Docs and generated artifacts are derived from the types, so they cannot drift from the implementation.
Readable by agents
Every package ships its own documentation inside its npm package, so an agent reads the exact version you installed — nothing to copy, nothing to re-sync, no version drift.