/**
 * Output formatters for JSON and pretty logging
 */
import type { LogEntry } from './types.js';
/**
 * Format log level as uppercase string
 */
export declare function formatLevel(label: string, _number: number): {
    level: string;
};
/**
 * Custom timestamp formatter
 */
export declare function formatTimestamp(time: number): {
    time: string;
};
/**
 * Format timestamp for development (human readable)
 */
export declare function formatTimestampDev(time: number): {
    time: string;
};
/**
 * Sanitize error objects for JSON serialization
 */
export declare function serializeError(err: Error): Record<string, any>;
/**
 * Format log entry for production JSON output
 */
export declare function formatProductionLog(log: LogEntry): LogEntry;
/**
 * Format log entry for development pretty output
 */
export declare function formatDevelopmentLog(log: LogEntry): LogEntry;
/**
 * Create Pino formatters configuration
 */
export declare function createFormatters(isProduction?: boolean): {
    level: typeof formatLevel;
    log: typeof formatProductionLog;
    time: typeof formatTimestampDev;
};
/**
 * Message formatter for custom log messages
 */
export declare function formatMessage(template: string, bindings: Record<string, any>, level: string): string;
/**
 * Color mapping for different log levels (development only)
 */
export declare const levelColors: Record<string, string>;
/**
 * Get color for log level
 */
export declare function getLevelColor(level: string): string;
/**
 * Create pretty print formatter for development
 */
export declare function createPrettyFormatter(): {
    translateTime: string;
    ignore: string;
    messageFormat: string;
    customPrettifiers: {
        time: (timestamp: number) => string;
        level: (label: string) => string;
        hostname: () => string;
    };
    colorize: boolean;
    levelFirst: boolean;
};
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