import { SSHServerConfig, CommandResult } from "./types.js";
/**
 * Manages persistent SSH connections to multiple servers
 */
export declare class SSHConnectionManager {
    private serverConfigs;
    private connections;
    private configs;
    private connectionPromises;
    constructor(serverConfigs: SSHServerConfig[]);
    /**
     * Get the default server slug (first configured server)
     */
    getDefaultSlug(): string;
    /**
     * Get all configured server slugs
     */
    getAllSlugs(): string[];
    /**
     * Get or create a connection to the specified server
     */
    private getConnection;
    /**
     * Check if a connection is still alive
     */
    private isConnectionAlive;
    /**
     * Create a new SSH connection
     */
    private createConnection;
    /**
     * Execute a command on the specified server
     */
    executeCommand(command: string, slug?: string): Promise<CommandResult>;
    /**
     * Close all connections
     */
    closeAll(): Promise<void>;
    /**
     * Close connection to a specific server
     */
    closeConnection(slug: string): Promise<void>;
}