import { InjectionToken } from '@angular/core';
export declare const LOGGER_SERVICE_TOKEN: InjectionToken<LoggerService>;
export interface LoggerService {
    isErrorEnabled(): boolean;
    error(message?: any, optionalParams?: any[]): any;
    isWarnEnabled(): boolean;
    warn(message?: any, optionalParams?: any[]): any;
    isInfoEnabled(): boolean;
    info(message?: any, optionalParams?: any[]): any;
    isDebugEnabled(): boolean;
    debug(message?: any, optionalParams?: any[]): any;
    isLogEnabled(): boolean;
    log(message?: any, optionalParams?: any[]): any;
}
