/**
 * Active history strategy — `withHistory()` returns the real
 * implementation that wires per-record snapshots, the hash-chained
 * audit ledger, JSON-patch deltas, and time-machine reads into the
 * core write/read paths.
 *
 * Consumers opt in by:
 *
 * ```ts
 * import { createNoydb } from '@noy-db/hub'
 * import { withHistory } from '@noy-db/hub/history'
 *
 * const db = await createNoydb({
 *   store: ...,
 *   user: ...,
 *   historyStrategy: withHistory(),
 * })
 * ```
 *
 * The factory is a thin wrapper that delegates to the existing
 * `history.ts`, `diff.ts`, `ledger/store.ts`, `ledger/patch.ts`, and
 * `time-machine.ts` modules. Splitting the import chain through this
 * file is what lets `tsup` tree-shake the heavy modules out of the
 * default `@noy-db/hub` bundle when no `withHistory()` import is
 * present in the consumer.
 *
 * @public
 */
import type { HistoryStrategy } from './strategy.js';
/**
 * Build the active history strategy. Today the factory takes no
 * options; per-collection retention tuning still flows through
 * `HistoryConfig` on `Vault.collection()` / `vault.openVault()`.
 *
 * Future option slots (kept off the LTS surface for now):
 *   - global maxVersions cap
 *   - global beforeDate prune cadence
 *   - ledger encryption toggle (today inferred from vault.encrypted)
 */
export declare function withHistory(): HistoryStrategy;