VirtualScrollerInitialParams.estimatedWidgetSize property

Estimated size of scroll element.

Signature:

estimatedWidgetSize?: number;

Remarks

Actual size is always reported by ResizeObserver, but this property together with VirtualScrollerRuntimeParams.estimatedItemSize and VirtualScrollerRuntimeParams.overscanCount can be used in server-side rendering.

Quantity of SSR-rendered elements can be calculated this way:

Math.min( itemCount, Math.ceil( estimatedWidgetSize / estimatedItemSize ) + overscanCount )