import type { LightPlugin, LightClient } from '../types';
declare class PerformancePlugin implements LightPlugin {
    name: string;
    version: string;
    private client;
    private config;
    private observers;
    private onLoad?;
    private navLoadTimer;
    private totalBlockingTime;
    private fcpTime;
    private lastLongTaskEndTime;
    private ttiReported;
    private ttiTimer;
    setup(client: LightClient): void;
    private loadConfig;
    private shouldSample;
    private observeWebVitals;
    private observeFP;
    private observeLCP;
    private observeFID;
    private observeCLS;
    private observeFCP;
    private observeTTFB;
    private observeLongTasks;
    private scheduleTTI;
    private observeNavigation;
    private observeResources;
    private getRating;
    private reportMetric;
    destroy(): void;
}
export default PerformancePlugin;