/**
 * Active transactions strategy. Only reachable via `@noy-db/hub/tx`.
 */
import type { TxStrategy } from './strategy.js';
import type { TransactionInvariant } from './invariants.js';
/**
 * Options for {@link withTransactions}. Currently only commit-time
 * changeset `invariants` (see {@link TransactionInvariant}).
 */
export interface TransactionStrategyOptions {
    /**
     * Commit-time set-level invariants run over the changeset on every
     * commit (ordinary AND amendment). See {@link TransactionInvariant}.
     */
    invariants?: ReadonlyArray<TransactionInvariant>;
}
/**
 * Build the default transactions strategy. Pass into
 * `createNoydb({ txStrategy: withTransactions() })` to enable
 * `db.transaction(fn)` (and `db.transaction({ dryRun: true }, fn)`).
 *
 * Supply `{ invariants }` to register commit-time changeset invariants —
 * set-level constraints that fire after the writes commit and revert the
 * transaction on a throw. Unlike `amendment.invariant`, these run for
 * ordinary `db.transaction(fn)` calls (and amendments) with no role gate.
 */
export declare function withTransactions(opts?: TransactionStrategyOptions): TxStrategy;