import { type AnalysisServerRuntime } from '../runtime-env.ts';
type EventListener = (...args: any[]) => void;
declare class EventEmitter {
    #private;
    on(eventName: string | symbol, listener: EventListener): this;
    once(eventName: string | symbol, listener: EventListener): this;
    off(eventName: string | symbol, listener: EventListener): this;
    removeListener(eventName: string | symbol, listener: EventListener): this;
    removeAllListeners(eventName?: string | symbol): this;
    emit(eventName: string | symbol, ...args: any[]): boolean;
    listenerCount(eventName: string | symbol): number;
}
export declare class WebSocketClient extends EventEmitter {
    #private;
    constructor(serverId: string, runtime?: AnalysisServerRuntime);
    /** Optional: await until connected (good for startup sequencing). */
    ready(timeoutMs?: number): Promise<void>;
    callMethod<Params extends Record<string, unknown>, Value>(method: string, params: Params, timeoutMs?: number): Promise<Value>;
    callStream<Params extends Record<string, unknown>, Value>(method: string, params: Params): {
        [Symbol.asyncIterator](): /*elided*/ any;
        next(): Promise<IteratorResult<Value>>;
        return(): Promise<{
            value: undefined;
            done: boolean;
        }>;
    };
    close(): void;
}
export {};