/**
 * [WHO]: Provides createLSPClient(), LSPClient type
 * [FROM]: Depends on node:child_process, vscode-jsonrpc/node.js
 * [TO]: Consumed by ./lsp-server-instance.ts
 * [HERE]: extensions/builtin/lsp/lsp-client.ts - stdio JSON-RPC client for LSP servers
 */
import type { InitializeParams, InitializeResult, ServerCapabilities } from "vscode-languageserver-protocol";
export interface LSPClient {
    readonly capabilities: ServerCapabilities | undefined;
    readonly isInitialized: boolean;
    start(command: string, args: string[], options?: {
        env?: Record<string, string>;
        cwd?: string;
    }): Promise<void>;
    initialize(params: InitializeParams): Promise<InitializeResult>;
    sendRequest<TResult>(method: string, params: unknown): Promise<TResult>;
    sendNotification(method: string, params: unknown): Promise<void>;
    onNotification(method: string, handler: (params: unknown) => void): void;
    onRequest<TParams, TResult>(method: string, handler: (params: TParams) => TResult | Promise<TResult>): void;
    stop(): Promise<void>;
}
export declare function createLSPClient(serverName: string, onCrash?: (error: Error) => void): LSPClient;