import type { Token } from '@furystack/inject';
import type { MongoClientOptions } from 'mongodb';
import { MongoClient } from 'mongodb';
/**
 * Pools {@link MongoClient} instances by URL so every store that targets the
 * same MongoDB deployment shares a single connection.
 *
 * Application code rarely calls this directly — {@link defineMongoDbStore}
 * resolves the factory token internally. Exported for tests and advanced
 * integrations that need raw client access (e.g. dropping a test database).
 */
export interface MongoClientFactory {
    getClientFor(url: string, options?: MongoClientOptions): MongoClient;
}
/**
 * Singleton token for the {@link MongoClientFactory}. Closes every pooled
 * client when the owning injector is disposed.
 */
export declare const MongoClientFactory: Token<MongoClientFactory, 'singleton'>;
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