Method onPerformanceUpdate

src/ChartGPU.ts:116–116

* Registers a callback to be notified of performance metric updates. * Callback is invoked every frame with the latest metrics. * * @param callback - Function to call with updated metrics * @returns Unsubscribe function to remove the callback

(callback: (metrics: Readonly<PerformanceMetrics>) => void)

   * @returns Unsubscribe function to remove the callback
   */
  onPerformanceUpdate(callback: (metrics: Readonly<PerformanceMetrics>) => void): () => void;
}

// Type-only alias so callsites can write `ChartGPU[]` for chart instances (while `ChartGPU` the value