SolidJS: warning "Missing attribute name 'data-index={index}' on measured element."

从链接的 CodeSandbox 复现开始，检查 SolidJS 对 virtualizer.measureElement 的使用，尤其是 issue 中显示的 data-index 和 ref 属性。跟踪测量回调如何读取元素，并将其与先分配 el.dataset.index 的变通方案进行比较。当复现不再发出缺少属性的警告，同时测量仍能正常工作时，即表示完成。

Describe the bug

Looks like virtualizer.measureElement is not working with SolidJS

<For each={virtualizer.getVirtualItems()}>{(item) =>
	<div
		class={item.index % 2 ? 'ListItemOdd' : 'ListItemEven'}
		data-index={item.index}
		ref={virtualizer.measureElement}
		style={{
			border: "1px solid red",
			"box-sizing": "border-box",
			"height": "150px"
		}}
	>
		Row {item.index} 
	</div>
}</For>

Dirty workaround:

<For each={virtualizer.getVirtualItems()}>{(item) =>
	<div
		class={item.index % 2 ? 'ListItemOdd' : 'ListItemEven'}
		data-index={item.index}
		ref={(el) => {
			el.dataset.index = item.index.toString(); // <--- see this!
			virtualizer.measureElement(el);
		}}
		style={{
			border: "1px solid red",
			"box-sizing": "border-box",
			"height": "150px"
		}}
	>
		Row {item.index} {Date.now()}
	</div>
}</For>

Your minimal, reproducible example

https://codesandbox.io/p/devbox/9rkhxf

Steps to reproduce

Just add

data-index={item.index}
ref={virtualizer.measureElement}

Expected behavior

No warning

How often does this bug happen?

None

Screenshots or Videos

No response

Platform

Chromium 133.0.6943.98

tanstack-virtual version

3.13.0

TypeScript version

No response

Additional context

No response

Terms & Code of Conduct

• I agree to follow this project's Code of Conduct
• I understand that if my bug cannot be reliable reproduced in a debuggable environment, it will probably not be fixed and this issue may even be closed.