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The product north-star — four tenets (open & agnostic, composable primitives, production-grade, predictable & type-safe) distilled from TanStack's ethos/tenets. Use when making a design, API, or architecture decision, evaluating a trade-off, justifying a feature, or writing/reviewing a docs/plans entry.
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| name | product-tenets |
| description | The product north-star — four tenets (open & agnostic, composable primitives, production-grade, predictable & type-safe) distilled from TanStack's ethos/tenets. Use when making a design, API, or architecture decision, evaluating a trade-off, justifying a feature, or writing/reviewing a docs/plans entry. |
Distilled from TanStack's ethos and product tenets — a great inspiration whose work we respect and learn from. These four tenets are the design north-star for @stainless-code/persist; reach for them whenever a decision needs justifying. Adopted and adapted to a single-package, zero-dep-core, seam-layered persistence middleware.
A store-agnostic core; integrations layered on top as optional adapters — never the foundation. Swapping a store library, storage backend, or serializer is a subpath swap, not a rewrite; framework-specific hydration lives in ./frameworks/*.
src/core/ (the zero-dep gate); "all-in on zustand/TanStack Store" assumptions; lock-in that forces a rewrite when the app changes stores.PersistableSource.Focused, composable building blocks that embrace the web platform rather than hiding it. Adoptable one piece at a time — no rewrites, no hard coupling. Escape hatches by design: always possible to drop down a level (persistSource + hand-rolled StateStorage / StorageCodec).
localStorage / IndexedDB / WebCrypto without escape routes.StateStorage), codec (StorageCodec), source (PersistableSource); createStorage(backend, codec) composition; wrappers (encrypted, compressed) stack; PersistRegistry is opt-in clear-all, not required.Designed around real-world workloads, edge cases, and long-lived apps — not happy-path demos. Features are not done until we'd run them in our own revenue-critical apps. Performance and reliability are requirements, not nice-to-haves.
HydrationSignal; versioned migrate; crossTab + onCrossTabRemove; retryWrite with write-generation guard; throttleMs / maxAge / buster; onError with phase.Minimal magic, maximum clarity. State, side effects, and data flow understandable from code, not hidden behavior. Type safety guides correct use without drowning users in generics. Evolve carefully with clear migration paths.
registry, crossTab, …) fixed at create time; SSR policy documented (hydrated = true on server); pre-1.0 — prefer the cleanest correct design, document breaks in minors.When a proposal conflicts with a tenet, explicitly address why and how the conflict is justified (a docs/plans/ entry for new surface, inline for a line-level change). Maintainers use these as a PR checklist; partners may not bias core toward a store or framework.
Peers for comparison / migration are store persist middlewares (zustand-persist, redux-persist, pinia-persist). Query-cache persisters are a different problem space — do not treat them as Persist competitors.
architecture-priming — STOP signals for structurally significant changes.improve-codebase-architecture · docs/architecture.mddocs-voice — public docs tone.Gate Alpine.js UI on Persist hydration (Alpine.plugin + useHydrated / $hydrated). Use when wiring HydrationSignal into Alpine data components.
Gate Angular UI on Persist hydration with useHydrated (readonly Signal). Call inside an injection context; use when avoiding flash of default state on async backends.
Gate Lit element UI on Persist hydration with HydrationController. Use when wiring HydrationSignal into a ReactiveControllerHost; not a hook.
Persist with React Native AsyncStorage via @stainless-code/persist/backends/async-storage. Use for RN string-wire JSON state; always gate with useHydrated.
Compress a string-wire StateStorage with @stainless-code/persist/backends/compressed (gzip/deflate). Backend wrapper — compose with createStorage; stack compress-then-encrypt.
Cross-tab sync for backends without storage events via @stainless-code/persist/transport/crosstab (createBroadcastCrossTab). Wrap storage + pass crossTabEventTarget; call close() on teardown.