export interface Settings {
    /**
     * Server's port to connect to
     */
    port: number;
    /**
     * Server host
     */
    host?: string;
    /**
     * Use a secure connection
     */
    ssl?: boolean;
}
export declare enum Errors {
    /**
     * The connection is already alive
     */
    alreadyAlive = 0,
    /**
     * The connection is already starting
     */
    alreadyStarting = 1,
    /**
     * The client failed to connect for an unknown reason
     */
    failedToConnect = 2
}
export default class TCPClient {
    /**
     * The event emitter
     */
    private emitter;
    /**
     * The WebSocket client
     */
    private webSocket?;
    /**
     * Client settings
     */
    private _settings;
    /**
     * If the connection is alive
     */
    private _alive;
    /**
     * If the connection is starting
     */
    private _starting;
    /**
     * Error message caught from WebSocket
     */
    private _exitError?;
    /**
     * This class is used to connect to TCP server
     * @param settings TCP host client settings
     */
    constructor(settings: Settings);
    /**
     * Start the connection process to the server
     * @returns Promise for when the connection was successful
     */
    start(): Promise<void>;
    /**
     * If the connection is alive
     */
    get alive(): boolean;
    /**
     * If the connection is starting
     */
    get starting(): boolean;
    /**
     * Client connection settings
     */
    get settings(): Settings;
    /**
     * Send a message to the server
     * @param channel The channel to send the message in
     * @param message The actual message
     */
    send<MessageType>(channel: string, message?: MessageType): void;
    /**
     * The error details from WebSocket connection exit
     */
    get exitError(): CloseEvent | null;
    /**
     * Listen for server ready events
     * @param event Event name
     * @param listener Event callback
     */
    on(event: "ready", listener: () => void): string;
    /**
     * Listen for message events from the server
     * @param event Event name
     * @param listener Event callback
     */
    on<MessageType>(event: "message", listener: (message: MessageType, channel: string) => void): string;
    /**
     * Listen for server ready events
     * @param event Event name
     * @param listener Event callback
     */
    once(event: "ready", listener: () => void): string;
    /**
     * Listen for message events from the server
     * @param event Event name
     * @param listener Event callback
     */
    once<MessageType>(event: "message", listener: (message: MessageType, channel: string) => void): string;
}