Method insertBefore

front_end/ui/legacy/Widget.ts:289–296

(child: T, referenceChild: Node)

  }

  override insertBefore<T extends Node>(child: T, referenceChild: Node): T {
    const widget = child instanceof HTMLElement ? Widget.get(child) : null;
    if (widget) {
      widget.show(this, referenceChild, /* suppressOrphanWidgetError= */ true);
      return child;
    }
    return super.insertBefore(child, referenceChild);
  }

  override removeChild<T extends Node>(child: T): T {
    const childWidget = Widget.get(child);