/**
 * LSP Client — Language Server Protocol client over stdio.
 *
 * Manages a single language server connection:
 * - Spawn process with Content-Length framed JSON-RPC
 * - Initialize handshake (capabilities, rootUri)
 * - Track open files with version numbers
 * - Receive and cache diagnostics per file
 * - touchFile() → open/change → await diagnostics
 *
 * Swarm-aware: A single LSPClient instance is shared across all agents.
 * Concurrent touchFile() calls are safe — file versions are tracked atomically.
 *
 * Zero-dependency: uses only node:child_process and node:path.
 */
import type { LSPServerConfig, LSPClientState, LSPClientInfo, LSPDiagnostic, LSPLocation, LSPDocumentSymbol, LSPHover, LSPCompletionItem } from "./types.js";
export declare class LSPClient {
    private readonly config;
    private readonly rootDir;
    private process;
    private state;
    private serverInfo?;
    private nextId;
    private pending;
    private buffer;
    private fileVersions;
    private diagnosticsCache;
    private diagnosticsWaiters;
    private _startPromise;
    private _onStdoutData;
    constructor(config: LSPServerConfig, rootDir: string);
    /**
     * Start the language server and complete the initialize handshake.
     */
    start(): Promise<void>;
    private _doStart;
    /**
     * Stop the language server.
     */
    stop(): void;
    /**
     * Notify the server about a file change and optionally wait for diagnostics.
     *
     * If the file hasn't been opened yet, sends didOpen. Otherwise sends didChange.
     * Reads the file content from disk.
     */
    touchFile(filePath: string, waitForDiagnostics?: boolean): Promise<void>;
    /**
     * Get cached diagnostics for a file.
     */
    getDiagnostics(filePath: string): LSPDiagnostic[];
    /**
     * Get all cached diagnostics keyed by file path.
     */
    getAllDiagnostics(): Map<string, LSPDiagnostic[]>;
    /**
     * Get definition locations for a symbol at the given position.
     */
    getDefinition(filePath: string, line: number, character: number): Promise<LSPLocation[]>;
    /**
     * Get reference locations for a symbol at the given position.
     */
    getReferences(filePath: string, line: number, character: number): Promise<LSPLocation[]>;
    /**
     * Get document symbols for the given file.
     */
    getDocumentSymbols(filePath: string): Promise<LSPDocumentSymbol[]>;
    /**
     * Get hover information for a symbol at the given position.
     */
    getHover(filePath: string, line: number, character: number): Promise<LSPHover | null>;
    /**
     * Get completion items at the given position.
     */
    getCompletions(filePath: string, line: number, character: number): Promise<LSPCompletionItem[]>;
    getState(): LSPClientState;
    getInfo(): LSPClientInfo;
    getServerId(): string;
    private waitForDiagnostics;
    private notifyDiagnosticsWaiters;
    private removeWaiter;
    private clearAllWaiters;
    private sendRequest;
    private sendNotification;
    private writeMessage;
    private static readonly MAX_BUFFER_SIZE;
    private processBuffer;
    private handleMessage;
    private handleNotification;
    /**
     * Ensure a file is open on the server. If not already tracked,
     * call touchFile to send didOpen.
     */
    private ensureFileOpen;
    private uriToPath;
    private handleProcessExit;
    private rejectAllPending;
}
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