import type { RelativeTime } from '@datadog/browser-core';
import type { RumConfiguration } from '../../configuration';
import type { FirstHidden } from './trackFirstHidden';
export declare const FCP_MAXIMUM_DELAY: number;
export declare function trackFirstContentfulPaint(configuration: RumConfiguration, firstHidden: FirstHidden, callback: (fcpTiming: RelativeTime) => void): {
    stop: () => void;
};