/**
 * Stats overlay for viewport performance
 */
export declare class StatsOverlay {
    private container;
    private stats;
    constructor(container: HTMLElement);
    private createStats;
    /**
     * Update stats display
     */
    updateStats(data: Partial<typeof this.stats>): void;
    private updateDisplay;
    /**
     * Dispose stats
     */
    dispose(): void;
}
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