import type { Expertise, ExpertiseContext, Outcome } from "./types.js";
/**
 * Checks network log timing to ensure render-blocking content
 * is returned within the threshold (500ms).
 */
export declare class PerformanceExpertise implements Expertise {
    name: string;
    evaluate(context: ExpertiseContext): Outcome[];
    private checkRenderBlockingCount;
    private checkDomSize;
    private checkHtmlPayloadSize;
    private checkDuplicateStaticDownloads;
    private checkNavigationTiming;
    private checkTransferBudget;
    private checkSlowResourceTiming;
    private checkLargestResources;
    private checkBrowserDuplicateResources;
    private checkBrowserRenderBlockingResources;
}
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