import type { FC, HTMLAttributes, Ref } from 'react';
import type { TestableProps } from '../../utils/testId';
type FormatDateTimeFormat = 'relative' | 'date' | 'datetime';
interface FormatDateTimeBaseProps {
    /** ISO string, Date object, or Unix timestamp (ms) */
    value: string | Date | number | null | undefined;
    /** Display format. Default: 'relative' */
    format?: FormatDateTimeFormat;
    /** Show seconds in tooltip absolute time. Default: true */
    showSeconds?: boolean;
    ref?: Ref<HTMLTimeElement>;
}
type FormatDateTimeNativeProps = Omit<HTMLAttributes<HTMLTimeElement>, 'className'>;
export type FormatDateTimeProps = FormatDateTimeNativeProps & FormatDateTimeBaseProps & TestableProps;
export declare const FormatDateTime: FC<FormatDateTimeProps>;
export {};