import { InjectionToken, ModuleWithProviders } from '@angular/core';
import { LogConsoleService } from './log-console/log-console.service';
import { LogNoopService } from './log-noop/log-noop.service';
import { ConsoleMethods, LOGGER_LEVEL, LoggerConfig } from './logger-types';
import { PrefixService } from './prefix/prefix.service';
export declare const LOGGER_OPTIONS: InjectionToken<LoggerConfig>;
export declare function LogServiceFactory(levels: LOGGER_LEVEL, console: ConsoleMethods<void>, prefixService: PrefixService, loggerConfig: LoggerConfig): LogConsoleService | LogNoopService;
export declare class LoggerModule {
    /**
     * Call this method to import the logger module into the app module.
     */
    static forRoot(loggerConfig?: LoggerConfig): ModuleWithProviders<LoggerModule>;
}