import '../augmentations';
import type { GraphileConfig } from 'graphile-config';
/**
 * ConnectionFilterForwardRelationsPlugin
 *
 * Adds forward relation filter fields to table filter types.
 * A "forward" relation is one where the current table has a FK referencing another table.
 *
 * For example, if `orders` has `client_id` referencing `clients`,
 * then `OrderFilter` gets a `clientByClientId` field of type `ClientFilter`,
 * allowing queries like:
 *
 * ```graphql
 * allOrders(where: {
 *   clientByClientId: { name: { startsWith: "Acme" } }
 * }) { ... }
 * ```
 *
 * The SQL generated is an EXISTS subquery:
 * ```sql
 * WHERE EXISTS (
 *   SELECT 1 FROM clients
 *   WHERE clients.id = orders.client_id
 *   AND <nested filter conditions>
 * )
 * ```
 */
export declare const ConnectionFilterForwardRelationsPlugin: GraphileConfig.Plugin;