import type { SshConnection } from '../types/connections.js';
export declare class SSHExecutor {
    private connections;
    execute(server: SshConnection, command: string): Promise<string>;
    executeWithOutput(server: SshConnection, command: string): Promise<{
        stdout: string;
        stderr: string;
        exitCode: number;
    }>;
    executeWithInput(server: SshConnection, command: string, stdin: string): Promise<{
        stdout: string;
        stderr: string;
        exitCode: number;
    }>;
    private getClient;
    private getConnectionKey;
    private dropClient;
    private isStaleConnectionError;
    closeAll(): Promise<void>;
    getConnectionCount(): number;
}