/**
 * Structured Logging Infrastructure
 *
 * Re-exports from @revealui/utils to maintain backward compatibility.
 * The actual implementation has been moved to @revealui/utils to break circular dependencies.
 */
export type { LogContext, LogEntry, LoggerConfig, LogLevel, } from '@revealui/utils/logger';
export { createLogger, Logger, logAudit, logError, logger, logQuery, } from '@revealui/utils/logger';
/**
 * Request logger middleware
 */
export declare function createRequestLogger<TRequest = unknown, TResponse = unknown>(options?: {
    includeBody?: boolean;
    includeHeaders?: boolean;
}): (request: TRequest & {
    method: string;
    url: string;
    headers?: {
        get?: (key: string) => string | null;
        entries?: () => Iterable<[string, string]>;
    };
}, next: () => Promise<TResponse>) => Promise<TResponse>;
/**
 * Performance logger
 */
export declare function logPerformance(operation: string, duration: number, context?: Record<string, unknown>): void;
/**
 * API call logger
 */
export declare function logAPICall(method: string, url: string, status: number, duration: number, context?: Record<string, unknown>): void;
/**
 * Cache operation logger
 */
export declare function logCache(operation: 'hit' | 'miss' | 'set' | 'delete', key: string, context?: Record<string, unknown>): void;
/**
 * User action logger
 */
export declare function logUserAction(action: string, userId?: string, context?: Record<string, unknown>): void;
/**
 * System event logger
 */
export declare function logSystemEvent(event: string, context?: Record<string, unknown>): void;
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