import EventEmitter from 'events';
import { DashboardMessage, DashboardRequest } from './protocols/DashboardMessageProtocol';
export type WebSocketConnectorEventMap = {
    new: [];
    connecting: [];
    connected: [];
    closed: [];
    stateChange: [state: WebSocketConnectorState];
    message: [message: DashboardMessage];
    'socket-closed': [code: number, reason: string];
};
export type WebSocketConnectorState = 'new' | 'connecting' | 'connected' | 'closed';
export declare interface WebSocketConnector {
    on<U extends keyof WebSocketConnectorEventMap>(event: U, listener: (...args: WebSocketConnectorEventMap[U]) => void): this;
    off<U extends keyof WebSocketConnectorEventMap>(event: U, listener: (...args: WebSocketConnectorEventMap[U]) => void): this;
    once<U extends keyof WebSocketConnectorEventMap>(event: U, listener: (...args: WebSocketConnectorEventMap[U]) => void): this;
    emit<U extends keyof WebSocketConnectorEventMap>(event: U, ...args: WebSocketConnectorEventMap[U]): boolean;
}
export type WebSocketConnectorConfig = {
    id?: string;
    url: string;
    getAccessToken?: () => Promise<string | undefined>;
};
export declare class WebSocketConnector extends EventEmitter {
    readonly config: WebSocketConnectorConfig;
    private readonly _codec;
    private readonly _pendingRequests;
    private _state;
    private _socket?;
    private _connectingTimer?;
    private _connectionTimeoutInSec;
    private _reconnectingTimer?;
    private _accessToken?;
    constructor(config: WebSocketConnectorConfig);
    get id(): string | undefined;
    get accessToken(): string | undefined;
    get state(): WebSocketConnectorState;
    private set state(value);
    close(code?: number, reason?: string): void;
    connect(accessToken?: string): Promise<void>;
    request<T>({ request, requestTimeoutInMs, }: {
        request: DashboardRequest;
        requestTimeoutInMs?: number;
    }): Promise<T>;
    notify({ message, }: {
        message: DashboardMessage;
        queueOnConnectionLoss?: boolean;
    }): void;
    private _connecting;
    private _reconnect;
    private _rejectAndClearMessages;
    private _sendRequest;
    private _onOpen;
    private _onMessage;
    private _onError;
    private _onClose;
}
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