@source-repo/query

The pull half of a control network: a TanStack Query cache over $data, whose freshness comes from the publisher rather than from a clock. Its own version line, built against the library's public APIs only.

npm install @source-repo/query

• Confirmed current, not "probably still good" — a page drawn at the revision the component channel currently holds has had nothing published over it, which is a fact from the source rather than a policy computed from a timer.
• Three states, never two — current, possibly-changed, and unknown for where nothing is watching. A current that is sometimes a guess would be worth nothing.
• A period that costs nothing while the plant is quiet — a tick over a current page asks for nothing at all, and the same period behaves exactly as before against a moving one.
• semantics decides whether a retry is safe — a cache retries three times by default, which is right only because a query is a query; undeclared means undeclared, and nothing is retried.
• A deadline is a budget across attempts — every attempt gets what remains of what the caller declared, and one that arrives with none left is refused rather than sent.
• Not a browser thing — @tanstack/query-core is framework-agnostic, so two Node services pulling from a third get the same dedup, arithmetic and freshness.

Full documentation: the package README. On npm: @source-repo/query.