import { TestConfig, PerformanceMetrics } from './types.js';
export declare const outputDir: string;
export declare class AuditRunner {
    options: TestConfig;
    deviceConfigs: Record<string, {
        viewport: {
            width: number;
            height: number;
        };
    }>;
    constructor(options?: {});
    runAudit(url: string): Promise<PerformanceMetrics>;
    private runSingleTest;
    private combineResults;
    private saveResults;
}