import { LighthouseReport, LighthouseAudit } from "./lighthouse/types";
export interface MetricComparison {
    name: string;
    key: string;
    value: number;
    diff: number;
}
export declare type FailedMetricComparison = MetricComparison & {
    minScore: number;
};
export declare type ReportComparison = {
    metricsComparison: MetricComparison[];
    failedAudits: LighthouseAudit[];
};
export declare function compareReports(base: LighthouseReport | undefined, head: LighthouseReport): ReportComparison;