import { type Knex } from 'knex';
/**
 * Execute the given handler within the current transaction or a newly created one
 * if the current knex state isn't a transaction yet.
 *
 * Can be used to ensure the handler is run within a transaction,
 * while preventing nested transactions.
 */
export declare const transaction: <T = unknown>(knex: Knex, handler: (knex: Knex.Transaction) => Promise<T>) => Promise<T>;