/**
 * LSP Client Manager Service
 *
 * Multi-language client pool (singleton). Manages LSP client lifecycle,
 * spawning servers on demand and shutting them down after idle timeout.
 */
import { LSPClient } from './lsp-client.js';
/**
 * LSP Client Manager — manages a pool of language server clients
 */
export declare class LSPClientManagerService {
    private readonly clients;
    private readonly projectRoot;
    constructor(projectRoot: string);
    /**
     * Get a client for a file, spawning the server if needed.
     * Returns null if no server is configured for this file type.
     */
    getClientForFile(filePath: string): Promise<LSPClient | null>;
    /**
     * Shut down all managed clients
     */
    shutdownAll(): Promise<void>;
    /**
     * Get the number of active clients
     */
    getActiveClientCount(): number;
    /**
     * Get status of all managed clients
     */
    getStatus(): Array<{
        command: string;
        lastUsed: number;
        state: string;
    }>;
    /**
     * Update last-used timestamp and reset idle timer
     */
    private touchClient;
    /**
     * Reset the idle timeout for a client
     */
    private resetIdleTimer;
}
export declare function getLSPClientManager(projectRoot?: string): LSPClientManagerService;
export declare function resetLSPClientManager(): void;
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