/**
 * JSON audit logging system
 */
import type { Logger, AuditLogEntry, LogLevel, RuntimeContext } from '../types/index.js';
export interface LoggerConfig {
    logDir: string;
    maxFileSize?: number;
    maxFiles?: number;
    level?: LogLevel;
    console?: boolean;
}
export declare class JsonLogger implements Logger {
    private readonly config;
    private readonly logFilePath;
    private writeStream?;
    private context?;
    private pendingWrites;
    private closed;
    constructor(config: LoggerConfig);
    /**
     * Set runtime context for log entries
     */
    setContext(context: RuntimeContext): void;
    /**
     * Log debug message
     */
    debug(message: string, meta?: any): void;
    /**
     * Log info message
     */
    info(message: string, meta?: any): void;
    /**
     * Log warning message
     */
    warn(message: string, meta?: any): void;
    /**
     * Log error message
     */
    error(message: string, meta?: any): void;
    /**
     * Log a step in the build process
     */
    step(step: string, message: string, meta?: any): void;
    /**
     * Log build start
     */
    buildStart(revision: string, branch: string): void;
    /**
     * Log build completion
     */
    buildComplete(success: boolean, duration: number, meta?: any): void;
    /**
     * Log build error
     */
    buildError(step: string, error: string | Error, meta?: any): void;
    /**
     * Write log entry
     */
    private writeLog;
    private doWriteLog;
    /**
     * Log to console with appropriate formatting
     */
    private logToConsole;
    /**
     * Check if we should log at this level
     */
    private shouldLog;
    /**
     * Rotate logs if file size exceeds limit
     */
    private rotateLogsIfNeeded;
    /**
     * Rotate log files
     */
    private rotateLogs;
    /**
     * Get recent log entries
     */
    getRecentLogs(count?: number): Promise<AuditLogEntry[]>;
    /**
     * Get logs by revision
     */
    getLogsByRevision(revision: string): Promise<AuditLogEntry[]>;
    /**
     * Get logs by time range
     */
    getLogsByTimeRange(startTime: number, endTime: number): Promise<AuditLogEntry[]>;
    /**
     * Clean up old log files
     */
    cleanup(daysToKeep?: number): Promise<void>;
    /**
     * Close the logger and cleanup resources
     */
    close(): Promise<void>;
}
/**
 * Create a logger instance
 */
export declare function createLogger(config: LoggerConfig): Logger;
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