/**
 * Connection Manager Service
 * SOLID Principles: Single Responsibility - Handle database connection only
 */
import { Pool } from 'pg';
import { Logger } from '../../../utils/logger';
import { DatabaseConfig } from '../base';
import { IConnectionManager } from '../interfaces';
export declare class ConnectionManager implements IConnectionManager {
    private pool;
    private logger;
    constructor(logger: Logger);
    initialize(config: DatabaseConfig): Promise<Pool>;
    close(): Promise<void>;
    /**
     * Run database schema migrations - should only be called during setup phase
     */
    migrate(): Promise<void>;
    isHealthy(): Promise<boolean>;
    getPool(): Pool;
}
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