export interface SendableConnection {
    send(data: string): void;
}
export interface ReadWriteConnection extends SendableConnection {
    /**
     * Message received from the connection.
     */
    onMessage(cb: (data: string) => void): void;
    /**
     * Indicates permanent closure, meaning we should dispose.
     */
    onClose(cb: () => void): void;
    /**
     * Connection is temporarily down.
     */
    onDown(cb: () => void): void;
    /**
     * Connection is back up.
     */
    onUp(cb: () => void): void;
}
export declare type LoggerArgument = (() => Array<{
    [key: string]: any;
}>) | {
    [key: string]: any;
};
export interface Logger {
    trace(message: string, ...args: LoggerArgument[]): void;
    error(message: string, ...args: LoggerArgument[]): void;
}
export declare class DefaultLogger implements Logger {
    private readonly name;
    constructor(name: string);
    trace(message: string, ...args: LoggerArgument[]): void;
    error(message: string, ...args: LoggerArgument[]): void;
    private log;
}
export declare enum ConnectionStatus {
    Disconnected = 0,
    Connected = 1,
    Closed = 2
}