@stainless-code/persist
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Hydration-aware persistence middleware for reactive stores (storage × codec seams, TanStack Store adapters, React hydration hook)
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text/typescript
import { c as PersistStorage, t as CreateStorageOptions, u as StateStorage } from "./persist-core-DUCh-1pn.mjs";
import { UseStore } from "idb-keyval";
//#region src/persist-idb.d.ts
interface IdbStorageOptions extends CreateStorageOptions {
/**
* Custom `idb-keyval` store (`createStore(dbName, storeName)`) — e.g. to
* namespace persisted state away from other idb-keyval users.
* @default idb-keyval's shared default store (`keyval-store` / `keyval`)
*/
store?: UseStore;
}
/**
* `StateStorage` over idb-keyval — fully async; maps idb-keyval's
* `undefined`-for-missing to the `null` this seam expects. Generic over the
* wire type: `string` for codec-encoded use, `StorageValue<S>` for the
* structured-clone mode (see `createIdbStorage`). IndexedDB
* unavailability (private-mode edge cases, forced closes) surfaces as a
* rejection on first use — reported via `onError` phase `"hydrate"` — not at
* construction (`createStorage`'s sync try-guard can't see it).
*/
declare function idbStateStorage<TRaw = string>(store?: UseStore): StateStorage<TRaw>;
/**
* Build an IndexedDB-backed `PersistStorage` (via idb-keyval) —
* **structured-clone mode**: IndexedDB stores the `StorageValue` envelope
* NATIVELY, so `Set` / `Map` / `Date` round-trip via the structured-clone
* algorithm with zero (de)serialization — no seroval, no JSON, and better
* DevTools inspection (objects, not encoded strings). The payoff of the
* generic wire-type seam (`StateStorage<TRaw>`).
*
* Codec use cases (encryption at rest, compression, legacy string payloads)
* are a one-line composition over the core primitives instead of a second
* factory:
*
* ```ts
* createStorage(() => idbStateStorage(store), myEncryptedCodec, options);
* ```
*
* Semantics vs `localStorage` backends:
* hydration can't settle before first paint, so `useHydrated` gating is
* mandatory rather than optional; IndexedDB fires no `storage` events, so
* `crossTab` needs a `BroadcastChannel` bridge via `crossTabEventTarget`;
* and `clearCorruptOnFailure` is inert here — the identity decode never
* throws (structured clone can't truncate-corrupt the way strings can).
*
* @example
* ```ts
* import { createIdbStorage } from "./persist-idb";
*
* const storage = createIdbStorage<Prefs>(); // Set/Map/Date just work
* ```
*/
declare function createIdbStorage<S>(options?: IdbStorageOptions): PersistStorage<S> | undefined;
//#endregion
export { IdbStorageOptions, createIdbStorage, idbStateStorage };