import { LumberjackLogLevel } from '../logs/lumberjack-log-level';
import { LumberjackLogPayload } from '../logs/lumberjack-log-payload';
import { LumberjackTimeService } from '../time/lumberjack-time.service';
import { LumberjackLoggerBuilder } from './lumberjack-logger.builder';
import { LumberjackService } from './lumberjack.service';
import * as i0 from "@angular/core";
/**
 * A logger holds methods that log a predefined log.
 *
 * Implement application- and library-specific loggers by extending this base
 * class. Optionally supports a log payload.
 *
 * Each protected method on this base class returns a logger builder.
 */
export declare abstract class LumberjackLogger<TPayload extends LumberjackLogPayload | void = void> {
    protected readonly lumberjack: LumberjackService<TPayload>;
    protected readonly time: LumberjackTimeService;
    /**
     * Create a logger builder for a critical log with the specified message.
     */
    protected createCriticalLogger(message: string): LumberjackLoggerBuilder<TPayload>;
    /**
     * Create a logger builder for a debug log with the specified message.
     */
    protected createDebugLogger(message: string): LumberjackLoggerBuilder<TPayload>;
    /**
     * Create a logger builder for an error log with the specified message.
     */
    protected createErrorLogger(message: string): LumberjackLoggerBuilder<TPayload>;
    /**
     * Create a logger builder for an info log with the specified message.
     */
    protected createInfoLogger(message: string): LumberjackLoggerBuilder<TPayload>;
    /**
     * Create a logger builder for a trace log with the specified message.
     */
    protected createTraceLogger(message: string): LumberjackLoggerBuilder<TPayload>;
    /**
     * Create a logger builder for a warning log with the specified message.
     */
    protected createWarningLogger(message: string): LumberjackLoggerBuilder<TPayload>;
    /**
     * Create a logger builder for a log with the specified log level and message.
     */
    protected createLoggerBuilder(level: LumberjackLogLevel, message: string): LumberjackLoggerBuilder<TPayload>;
    static ɵfac: i0.ɵɵFactoryDeclaration<LumberjackLogger<any>, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<LumberjackLogger<any>>;
}