import React from 'react';
type FpsCounterProps = {
    /**
     * Show detailed per-phase timing breakdown.
     * @default false
     */
    detailed?: boolean;
    /**
     * Rolling window for FPS calculation in milliseconds.
     * @default 1000
     */
    sampleWindowMs?: number;
};
/**
 * Displays real-time frame rate and render timing.
 *
 * Subscribes to Ink's frame events via `useFps` and shows:
 * - Current FPS (color-coded: green ≥50, yellow ≥30, red <30)
 * - Last frame duration
 * - Optionally: per-phase breakdown (renderer, diff, optimize, write, yoga)
 *
 * Usage:
 * ```tsx
 * <FpsCounter />
 * <FpsCounter detailed />
 * ```
 */
export declare function FpsCounter({ detailed, sampleWindowMs, }: FpsCounterProps): React.ReactNode;
export {};
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