/**
 * LSP client pool — manages one LspClient per language per workspace.
 *
 * Handles crash recovery (restart up to MAX_RESTARTS within RESTART_WINDOW_MS),
 * lazy startup (first request triggers spawn), and graceful teardown.
 */
import { LspClient } from './client';
export declare class LspPool {
    private readonly rootUri;
    private readonly logger;
    private pool;
    private registry;
    constructor(rootUri: string, logger: {
        log: (...args: unknown[]) => void;
    }, userOverrides?: Record<string, string>);
    /**
     * Get a live client for the given language, starting one if needed.
     * Returns null if no server entry exists for the language.
     */
    get(language: string): Promise<LspClient | null>;
    /** Check whether a server is known for a language (without spawning). */
    has(language: string): boolean;
    /** Get a list of languages with running servers. */
    activeLanguages(): string[];
    /** Shut down all running servers. */
    closeAll(): Promise<void>;
    private startClient;
}
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