Function injectVirtualizer

packages/angular-virtual/src/index.ts:84–112

(
  options: () => PartialKeys<
    Omit<VirtualizerOptions<TScrollElement, TItemElement>, 'getScrollElement'>,
    'observeElementRect' | 'observeElementOffset' | 'scrollToFn'
  > & {
    scrollElement: ElementRef<TScrollElement> | TScrollElement | undefined
  },
)

}

export function injectVirtualizer<
  TScrollElement extends Element,
  TItemElement extends Element,
>(
  options: () => PartialKeys<
    Omit<VirtualizerOptions<TScrollElement, TItemElement>, 'getScrollElement'>,
    'observeElementRect' | 'observeElementOffset' | 'scrollToFn'
  > & {
    scrollElement: ElementRef<TScrollElement> | TScrollElement | undefined
  },
): AngularVirtualizer<TScrollElement, TItemElement> {
  const resolvedOptions = computed(() => {
    return {
      observeElementRect: observeElementRect,
      observeElementOffset: observeElementOffset,
      scrollToFn: elementScroll,
      getScrollElement: () => {
        const elementOrRef = options().scrollElement
        return (
          (isElementRef(elementOrRef)
            ? elementOrRef.nativeElement
            : elementOrRef) ?? null
        )
      },
      ...options(),
    }
  })
  return createVirtualizerBase<TScrollElement, TItemElement>(resolvedOptions)
}

function isElementRef<T extends Element>(
  elementOrRef: ElementRef<T> | T | undefined,