export declare enum LogLevel {
    TRACE = 0,
    DEBUG = 1,
    INFO = 2,
    WARN = 3,
    ERROR = 4,
    FATAL = 5
}
export interface LogEntry {
    level: LogLevel;
    message: string;
    timestamp: Date;
    traceId?: string;
    parentId?: string;
    spanId?: string;
    context?: Record<string, any>;
    metadata?: Record<string, any>;
    duration?: number;
    error?: Error;
    tags?: string[];
}
export interface TraceContext {
    traceId: string;
    parentId?: string;
    spanId: string;
    operationType: string;
    operationName: string;
    startTime: number;
    metadata: Record<string, any>;
    tags: string[];
}
export interface TracingOptions {
    operationType: 'http' | 'websocket' | 'cron' | 'queue' | 'database' | 'custom';
    operationName: string;
    metadata?: Record<string, any>;
    tags?: string[];
    autoTiming?: boolean;
}
export interface LoggerConfig {
    level: LogLevel;
    environment: 'development' | 'production' | 'test';
    enableTracing: boolean;
    enableTiming: boolean;
    enableContext: boolean;
    enableColors: boolean;
    maxContextDepth: number;
    timestampFormat: 'iso' | 'epoch' | 'relative';
}
export interface Formatter {
    format(entry: LogEntry): string;
}
export interface Timer {
    readonly id: string;
    stop(): number;
    lap(label?: string): number;
    getElapsed(): number;
}
export interface ContextData {
    [key: string]: any;
    userId?: string;
    requestId?: string;
    sessionId?: string;
    ip?: string;
    userAgent?: string;
}
export type LogMethod = (message: string, metadata?: Record<string, any>) => void;
export type TraceMethod = <T>(options: TracingOptions, fn: () => T | Promise<T>) => Promise<T>;