/**
 * Represents a generic logger that could be a simple console, bunyan etc.
 */
export interface Logger {
    trace(message?: any, ...optionalParams: any[]): void;
    debug(message?: any, ...optionalParams: any[]): void;
    info(message?: any, ...optionalParams: any[]): void;
    warn(message?: any, ...optionalParams: any[]): void;
    error(message?: any, ...optionalParams: any[]): void;
    [x: string]: any;
}
/**
 * Dummy logger that does not do anything.
 *
 * Useful as a default for some library that the user might want to get logs out of.
 */
export declare const dummyLogger: Logger;