import type { GraphileCacheEntry } from './graphile-cache';
interface GraphileInstanceOptions {
    preset: any;
    cacheKey: string;
    /**
     * When true, a RealtimeManager is created and started alongside the
     * PostGraphile instance.  The pool is extracted from the preset's
     * pgServices (managed by pg-cache) rather than passed separately.
     */
    enableRealtime?: boolean;
}
/**
 * Create a PostGraphile v5 instance backed by grafserv/express.
 *
 * This is the shared factory used by both graphql/server and graphql/explorer
 * to spin up a fully-initialised PostGraphile handler that fits into the
 * graphile-cache LRU cache.
 *
 * Callers are responsible for building the `GraphileConfig.Preset` (including
 * pgServices, grafserv options, grafast context, etc.) before passing it here.
 *
 * When `enableRealtime` is true, a RealtimeManager is created that bridges
 * cursor-tracked events from `drain_changes()` into the PostGraphile
 * instance's PgSubscriber EventEmitter.  Both `pgSubscriber` and the pg
 * pool are extracted from the resolved preset's pgServices — no separate
 * pool parameter is needed.
 */
export declare const createGraphileInstance: (opts: GraphileInstanceOptions) => Promise<GraphileCacheEntry>;
export {};