import type { Formatter, LogEntry } from './types';
export declare class DevFormatter implements Formatter {
    private enableColors;
    constructor(enableColors?: boolean);
    format(entry: LogEntry): string;
    private formatTimestamp;
    private formatTraceInfo;
    private formatDuration;
    private formatContext;
    private formatMetadata;
    private formatError;
    private formatObject;
    private formatValue;
    private colorize;
}
export declare class ProductionFormatter implements Formatter {
    format(entry: LogEntry): string;
}
export declare class CustomFormatter implements Formatter {
    private template;
    private dateFormat;
    constructor(template?: string, dateFormat?: (date: Date) => string);
    format(entry: LogEntry): string;
}