/**
 * Active periods strategy factory. Only reachable through the
 * `@noy-db/hub/periods` subpath.
 */
import type { PeriodsStrategy } from './strategy.js';
/**
 * Build the default periods strategy. Pass into
 * `createNoydb({ periodsStrategy: withPeriods() })` to enable
 * `vault.closePeriod()` / `vault.openPeriod()` / write-guards.
 */
export declare function withPeriods(): PeriodsStrategy;