Version: 0.1.00.2.00.2.10.2.20.2.30.2.41.0.01.0.11.1.01.1.11.1.22.0.0-beta.02.0.0-beta.12.0.0-beta.22.0.02.0.12.1.02.1.12.1.22.1.32.1.43.0.0-beta.03.0.0-beta.13.0.0-beta.23.0.0-rc.03.0.03.0.13.0.23.0.33.0.43.1.03.1.1-soft-navs3.1.1-soft-navs-13.1.1-soft-navs-23.1.1-soft-navs-33.1.1-soft-navs-43.1.1-soft-navs-53.1.13.3.0-soft-navs-63.3.03.3.1-soft-navs-73.3.1-types3.3.1-types-23.3.13.3.2-soft-navs-83.3.23.4.0-soft-navs-93.4.03.5.0-soft-navs-103.5.0-soft-navs-113.5.0-soft-navs-123.5.0-soft-navs-133.5.0-soft-navs-143.5.03.5.1-soft-navs-153.5.13.5.2-soft-navs-163.5.24.0.0-beta.04.0.0-beta.14.0.0-beta.24.0.0-beta.34.0.0-rc.04.0.04.0.14.1.04.1.14.2.0-debug.04.2.04.2.14.2.2-soft-navs4.2.2-soft-navs-24.2.24.2.3-soft-navs4.2.34.2.45.0.0-rc.0
import { FCPMetric, MetricRatingThresholds, ReportOpts } from './types.js';
/** Thresholds for FCP. See https://web.dev/articles/fcp#what_is_a_good_fcp_score */
export declare const FCPThresholds: MetricRatingThresholds;
/**
* Calculates the [FCP](https://web.dev/articles/fcp) value for the current page and
* calls the `callback` function once the value is ready, along with the
* relevant `paint` performance entry used to determine the value. The reported
* value is a `DOMHighResTimeStamp`.
*/
export declare const onFCP: (onReport: (metric: FCPMetric) => void, opts?: ReportOpts) => void;