import { IPerformanceCapture } from '../../domain/interfaces/IPerformanceCapture';
import { LogEntry } from '../../domain/types';
export declare class PerformanceCapture implements IPerformanceCapture {
    private callback;
    private isActive;
    private observers;
    start(callback: (entry: LogEntry) => void): void;
    stop(): void;
    private observeWebVitals;
    private observeLongTasks;
    private observeResources;
    private handleResourceError;
    private getVitalRating;
}
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