/**
 * Health Score Engine
 *
 * Aggregates engine results into a composite health score.
 * Provides actionable health status and recommendations.
 *
 * WHAT THIS DOES:
 * ✅ Combines multiple engine results
 * ✅ Calculates weighted health score
 * ✅ Provides actionable status levels
 * ✅ Generates recommendations
 *
 * WHAT THIS DOES NOT DO:
 * ❌ Predict future health
 * ❌ Identify root causes
 * ❌ Guarantee accuracy of individual engines
 *
 * @module engines/runtime/health-score
 * @author Haiec
 * @license MIT
 */
import { EngineResult, HealthReport } from '../../types/runtime';
/**
 * Aggregates engine results into a health report.
 *
 * @param results - Array of engine results to aggregate
 * @param weights - Optional custom weights for each metric
 * @returns Comprehensive health report
 *
 * @example
 * const results = [latencyResult, tokenRateResult, fingerprintResult];
 * const report = HealthScoreEngine(results);
 *
 * if (report.health === 'unstable') {
 *   alert('LLM health critical!');
 * }
 */
export declare function HealthScoreEngine(results: EngineResult[], weights?: Record<string, number>): HealthReport;
/**
 * Quick health check - returns true if healthy.
 */
export declare function isHealthy(report: HealthReport): boolean;
/**
 * Gets severity level for alerting.
 */
export declare function getAlertLevel(report: HealthReport): 'none' | 'info' | 'warning' | 'critical';