/**
 * Entry type name of fcp.
 */
export declare const ENTRY_NAME_FCP = "first-contentful-paint";
/**
 * Minimum quiet window duration(At least 5 seconds).
 */
export declare const QUIET_WINDOW_DURATION = 5000;
/**
 * TTI scores.
 */
export declare const RATING: {
    mobile: {
        scoring: {
            p10: number;
            median: number;
        };
    };
    desktop: {
        scoring: {
            p10: number;
            median: number;
        };
    };
};