/**
 * Helper functions for PackageLayer
 */
import type { PackageLayer, QualityMetrics } from '../types/layer-types';
/**
 * Convert PackageLayer quality metrics to complete QualityMetrics object
 * Fills in defaults for missing metrics
 */
export declare function toQualityMetrics(packageLayer: PackageLayer): QualityMetrics | null;
/**
 * Check if a package has any quality metrics
 */
export declare function hasQualityMetrics(packageLayer: PackageLayer): boolean;
/**
 * Get list of available quality lenses for a package
 */
export declare function getAvailableLenses(packageLayer: PackageLayer): string[];
/**
 * Get list of missing standard lenses for a package
 */
export declare function getMissingLenses(packageLayer: PackageLayer): string[];
/**
 * Calculate overall quality score (0-100) based on available metrics
 */
export declare function getOverallQualityScore(packageLayer: PackageLayer): number;
/**
 * Generate recommendations for adding missing lens commands
 */
export declare function generateLensRecommendations(packageLayer: PackageLayer): string[];
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