/**
 * SMI-632: Benchmark Report Comparison
 * SMI-1189: Extracted from BenchmarkRunner.ts
 *
 * Functions for comparing benchmark reports to detect
 * performance regressions and improvements.
 */
import type { BenchmarkReport, ComparisonResult, MetricComparison } from './types.js';
/**
 * Compare two benchmark reports to detect regressions/improvements
 *
 * @param baseline - Baseline report to compare against
 * @param current - Current report to compare
 * @returns Comparison result with regression/improvement details
 */
export declare function compareReports(baseline: BenchmarkReport, current: BenchmarkReport): ComparisonResult;
/**
 * Check if a comparison has any regressions
 *
 * @param comparison - Comparison result to check
 * @returns True if any regressions were detected
 */
export declare function hasRegressions(comparison: ComparisonResult): boolean;
/**
 * Get only the regressed benchmarks from a comparison
 *
 * @param comparison - Comparison result to filter
 * @returns Array of [name, comparison] pairs for regressed benchmarks
 */
export declare function getRegressedBenchmarks(comparison: ComparisonResult): Array<[string, MetricComparison]>;
/**
 * Get only the improved benchmarks from a comparison
 *
 * @param comparison - Comparison result to filter
 * @returns Array of [name, comparison] pairs for improved benchmarks
 */
export declare function getImprovedBenchmarks(comparison: ComparisonResult): Array<[string, MetricComparison]>;
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