/**
 * Model Migration Testing — Run tests across model configs and compare results
 * @module
 */
import type { TestCase, SuiteResult } from './types';
export interface ModelEndpoint {
    adapter: string;
    model: string;
    endpoint?: string;
    apiKey?: string;
}
export interface MigrationConfig {
    from: ModelEndpoint;
    to: ModelEndpoint;
    tests: TestCase[];
}
export interface MigrationTestResult {
    testName: string;
    fromPassed: boolean;
    toPassed: boolean;
    behaviorChanged: boolean;
    fromDurationMs: number;
    toDurationMs: number;
    fromCostUsd: number;
    toCostUsd: number;
    fromSteps: number;
    toSteps: number;
}
export interface MigrationReport {
    from: ModelEndpoint;
    to: ModelEndpoint;
    totalTests: number;
    behaviorChanges: number;
    newFailures: number;
    newPasses: number;
    costDiff: number;
    latencyDiff: number;
    qualityScore: number;
    results: MigrationTestResult[];
    summary: string;
}
/**
 * Compare two suite results as a migration report.
 */
export declare function compareMigrationResults(from: ModelEndpoint, to: ModelEndpoint, fromResults: SuiteResult, toResults: SuiteResult): MigrationReport;
/**
 * Format a migration report as Markdown (for PR comments).
 */
export declare function formatMigrationReport(report: MigrationReport): string;
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