import type { IotasLogger } from '../logger.js';
import type { Feature, IotasClientOptions, Rooms } from '../types.js';
/**
 * High-level IOTAS API client.
 *
 * Provides unit resolution, room/device discovery, and feature operations.
 * Delegates authentication to IotasSession and HTTP to IotasTransport.
 */
export declare class IotasClient {
    private readonly log;
    private readonly unitName?;
    private readonly transport;
    private readonly reliableUpdateAttempts;
    private readonly reliableUpdateBaseDelayMs;
    private readonly delay;
    private unitRequest;
    private featureIndex;
    private deviceIndex;
    private unit;
    constructor(options: IotasClientOptions);
    static withCredentials(log: IotasLogger, email: string, password: string, unitName?: string, options?: Pick<IotasClientOptions, 'fetch' | 'delay'>): IotasClient;
    initialize(): Promise<void>;
    getRooms(): Promise<Rooms>;
    getFeature(featureId: string): Promise<Feature | null>;
    private buildFeatureIndex;
    updateFeature(featureId: string, value: number): void;
    private updateFeatureReliable;
}