import { default as React } from 'react';
import { IDuration } from '../../core/IDuration';
import { RuntimeSpan } from '../../core/RuntimeSpan';
export interface ClockDisplayProps {
    duration: IDuration | undefined;
    className?: string;
}
export declare const ClockDisplay: React.FC<ClockDisplayProps>;
export interface ClockAnchorProps {
    clock: RuntimeSpan | undefined;
    className?: string;
    /** When true, shows remaining time instead of elapsed time (for countdown) */
    /** Optional label text to display with the time */
    label?: string;
    /** When true, shows effort/exercise information alongside the timer */
    showEffort?: boolean;
    /** Optional custom render function */
    render?: (duration: IDuration | undefined, label?: string, effort?: string) => React.ReactNode;
}
export declare const ClockAnchor: React.FC<ClockAnchorProps>;