import type { PoolClient } from "@neondatabase/serverless";
export declare const SINGLE_CONNECTION_NEON_URL = "postgres://user:password@ep-test-pooler.us-east-1.aws.neon.tech/neondb";
/**
 * A Neon pool of exactly one connection, the size `databasePoolMax()` gives
 * every serverless host, backed by PGlite so real SQL runs. `connect()` queues
 * behind the holder the way pg-pool does: a caller that needs a second
 * connection while the first is checked out waits until something releases it.
 *
 * Seed it with `sharedDbPool("neon", url, () => pool)` before anything opens a
 * database handle, so `getDbExec()`, `createGetDb()` and Better Auth all share
 * it as they do in production.
 */
export declare function createSingleConnectionNeonPool(): Promise<{
    pool: {
        connect(): Promise<PoolClient>;
        end(): Promise<void>;
        once(eventName: string | symbol, listener: (...args: any[]) => void): /*elided*/ any;
        removeListener(eventName: string | symbol, listener: (...args: any[]) => void): /*elided*/ any;
        off(eventName: string | symbol, listener: (...args: any[]) => void): /*elided*/ any;
        removeAllListeners(event?: string | symbol): /*elided*/ any;
        setMaxListeners(n: number): /*elided*/ any;
        getMaxListeners(): number;
        listeners(eventName: string | symbol): Function[];
        rawListeners(eventName: string | symbol): Function[];
        emit(eventName: string | symbol, ...args: any[]): boolean;
        listenerCount(eventName: string | symbol): number;
        prependListener(eventName: string | symbol, listener: (...args: any[]) => void): /*elided*/ any;
        prependOnceListener(eventName: string | symbol, listener: (...args: any[]) => void): /*elided*/ any;
        eventNames(): Array<string | symbol>;
        Promise: typeof Promise;
        Client: typeof import("@neondatabase/serverless").Client;
        hasFetchUnsupportedListeners: boolean;
        on(event: 'error' | 'connect' | 'acquire' | 'release' | 'remove', listener: any): /*elided*/ any;
        addListener: (event: "error" | "connect" | "acquire" | "release" | "remove", listener: any) => /*elided*/ any;
        query<T extends import("@neondatabase/serverless").Submittable>(queryStream: T): T;
        query<R extends any[] = any[], I = any[]>(queryConfig: import("@neondatabase/serverless").QueryArrayConfig<I>, values?: import("@neondatabase/serverless").QueryConfigValues<I> | undefined): Promise<import("@neondatabase/serverless").QueryArrayResult<R>>;
        query<R extends import("@neondatabase/serverless").QueryResultRow = any, I = any[]>(queryConfig: import("@neondatabase/serverless").QueryConfig<I>): Promise<import("@neondatabase/serverless").QueryResult<R>>;
        query<R extends import("@neondatabase/serverless").QueryResultRow = any, I = any[]>(queryTextOrConfig: string | import("@neondatabase/serverless").QueryConfig<I>, values?: import("@neondatabase/serverless").QueryConfigValues<I> | undefined): Promise<import("@neondatabase/serverless").QueryResult<R>>;
        query<R extends any[] = any[], I = any[]>(queryConfig: import("@neondatabase/serverless").QueryArrayConfig<I>, callback: (err: Error, result: import("@neondatabase/serverless").QueryArrayResult<R>) => void): void;
        query<R extends import("@neondatabase/serverless").QueryResultRow = any, I = any[]>(queryTextOrConfig: string | import("@neondatabase/serverless").QueryConfig<I>, callback: (err: Error, result: import("@neondatabase/serverless").QueryResult<R>) => void): void;
        query<R extends import("@neondatabase/serverless").QueryResultRow = any, I = any[]>(queryText: string, values: import("@neondatabase/serverless").QueryConfigValues<I>, callback: (err: Error, result: import("@neondatabase/serverless").QueryResult<R>) => void): void;
        options: import("@neondatabase/serverless").PoolOptions;
        readonly totalCount: number;
        readonly idleCount: number;
        readonly waitingCount: number;
        readonly expiredCount: number;
        readonly ending: boolean;
        readonly ended: boolean;
    };
    pglite: import("@electric-sql/pglite").PGlite & Record<string, never>;
    stats: {
        checkouts: number;
        maxWaiting: number;
    };
}>;