import { AppError, Disposable } from '@dandi/common';
import { Logger, Resolver } from '@dandi/core';
import { DbClient, TransactionFn } from '@dandi/data';
import { ModelBuilder, ModelBuilderOptions } from '@dandi/model-builder';
import { PgDbPool } from './pg.db.pool';
import { PgDbQueryableBase } from './pg.db.queryable';
export declare class TransactionAlreadyInProgressError extends AppError {
    constructor();
}
export declare class PgDbClient extends PgDbQueryableBase<PgDbPool> implements DbClient, Disposable {
    private resolver;
    private logger;
    private activeTransactions;
    constructor(pool: PgDbPool, modelValidator: ModelBuilder, resolver: Resolver, logger: Logger, modelBuilderOptions?: ModelBuilderOptions);
    transaction<T>(transactionFn: TransactionFn<T>): Promise<T>;
    dispose(reason: string): Promise<void>;
}