import { MongoClient, Db } from 'mongodb';
/**
 * Connect to MongoDB using the provided URI
 */
export declare function connectToMongoDB(uri: string): Promise<void>;
/**
 * Get the database instance
 */
export declare function getDb(): Db;
/**
 * Get the MongoDB client instance
 */
export declare function getClient(): MongoClient;
/**
 * Close the MongoDB connection
 */
export declare function closeMongoDB(): Promise<void>;
/**
 * Check if MongoDB connection is healthy
 */
export declare function checkMongoDBHealth(): Promise<boolean>;
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