import type { PerformancePanelJank } from '../types';
export declare class PanelJankPerformance {
    private panel;
    private content;
    private isExpanded;
    private isDragging;
    private dragOffset;
    private metrics;
    constructor();
    private createPanel;
    private enableDrag;
    updateMetrics(data: PerformancePanelJank): void;
    private render;
    private drawFrameTimeChart;
}