import { HttpData } from '../types/HttpLog.types';
import { LogLevel, LogPayload } from '../types/Log.types';
import { ILogger, RootLoggingConfig } from '../types/Logger.types';
import { MetricData } from '../types/MetricLog.types';
import { circular_buffer } from 'circular_buffer_js';
import { LogAppender } from '../types/Transport.types';
export declare class CoreLogger implements ILogger {
    readonly name: string;
    readonly logLevel: LogLevel;
    readonly flushOnError: boolean;
    readonly silent: boolean;
    readonly delimitter: string;
    ringBuffer: circular_buffer<LogPayload>;
    logAppenders: LogAppender[];
    constructor(options: RootLoggingConfig);
    metric(metricData: MetricData, loggerName?: string): void;
    http(request: HttpData, response: HttpData, durationMs: number, loggerName?: string): void;
    info(message: string, payload?: Object, loggerName?: string): void;
    error(message: string, payload?: Object, loggerName?: string): void;
    warn(message: string, payload?: Object, loggerName?: string): void;
    verbose(message: string, payload?: Object, loggerName?: string): void;
    silly(message: string, payload?: Object, loggerName?: string): void;
    debug(message: string, payload?: Object, loggerName?: string): void;
    alert(message: string, payload?: Object, loggerName?: string): void;
    clear(): void;
    flush(): void;
    private log;
    private flushPayload;
}