import type { SuiteResult } from './types';
export interface Baseline {
    saved_at: string;
    suite: string;
    tests: BaselineEntry[];
}
export interface BaselineEntry {
    name: string;
    passed: boolean;
    steps: number;
    duration_ms: number;
    cost_usd: number;
    assertions_passed: number;
    assertions_total: number;
}
export interface Regression {
    test: string;
    type: 'steps' | 'cost' | 'duration' | 'pass_fail';
    message: string;
    baseline: any;
    current: any;
}
/**
 * Save current results as a baseline.
 */
export declare function saveBaseline(result: SuiteResult, dir?: string): string;
/**
 * Load a baseline for a suite.
 */
export declare function loadBaseline(suiteName: string, dir?: string): Baseline | null;
/**
 * Compare current results against a baseline, detecting regressions.
 */
export declare function detectRegressions(result: SuiteResult, baseline: Baseline): Regression[];
/**
 * Format regressions for display.
 */
export declare function formatRegressions(regressions: Regression[]): string;
//# sourceMappingURL=regression.d.ts.map