import { LspClient } from './client.js';
/**
 * LSP Manager — manages LSP client instances per workspace and language.
 *
 * Features:
 * - Client pooling: one client per workspace::language combination
 * - Idle reaper: kills clients idle for more than 5 minutes
 * - Graceful shutdown: closes all clients on shutdown
 */
export declare class LspManager {
    private clients;
    /**
     * Get or create an LSP client for the given workspace and server.
     */
    getClient(workspaceRoot: string, serverId: string): Promise<LspClient>;
    /**
     * Release a client (does not close it, just removes from pool).
     */
    releaseClient(key: string): void;
    /**
     * Kill clients that have been idle for more than 5 minutes.
     */
    reapIdleClients(): void;
    /**
     * Get the number of active clients.
     */
    getActiveClients(): number;
    /**
     * Shut down all clients gracefully.
     */
    shutdownAll(): Promise<void>;
    /**
     * Generate a unique key for a workspace::server combination.
     */
    static getClientKey(workspaceRoot: string, serverId: string): string;
}
/**
 * Get LSP client for a file path (convenience wrapper).
 */
export declare function getLspClientForFile(filePath: string, workspaceRoot: string, manager: LspManager): Promise<{
    client: LspClient;
    language: string;
} | null>;
export declare const lspClientManager: LspManager;