fix(examples): use layoutEffect ref for scrollMargin in window example

[isaackaara]

The window example reads listRef.current?.offsetTop directly during render, which triggers the react-hooks/refs lint rule in eslint-plugin-react-hooks v7 (Compilation Skipped: Cannot access refs during render).

The fix follows the same pattern already used in the dynamic example: capture the offset in a plain ref via useLayoutEffect and use that ref's value as scrollMargin.

const listOffsetRef = React.useRef(0)

React.useLayoutEffect(() => {
  listOffsetRef.current = listRef.current?.offsetTop ?? 0
}, [])

const virtualizer = useWindowVirtualizer({
  // ...
  scrollMargin: listOffsetRef.current,
})

Fixes #1116

[changeset-bot]

⚠️ No Changeset found

Latest commit: 754240a

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 754240a

Command	Status	Duration	Result
nx affected --targets=test:sherif,test:knip,tes...	✅ Succeeded	8s	View ↗
nx run-many --target=build --exclude=examples/**	✅ Succeeded	16s	View ↗

---

☁️ Nx Cloud last updated this comment at 2026-03-12 18:54:24 UTC

[pkg-pr-new]

More templates

• @tanstack/virtual-example-angular-dynamic
• @tanstack/virtual-example-angular-fixed
• @tanstack/virtual-example-angular-infinite-scroll
• @tanstack/virtual-example-angular-padding
• @tanstack/virtual-example-angular-smooth-scroll
• @tanstack/virtual-example-angular-sticky
• @tanstack/virtual-example-angular-table
• @tanstack/virtual-example-angular-variable
• @tanstack/virtual-example-angular-window
• tanstack-lit-virtual-example-dynamic
• tanstack-lit-virtual-example-fixed
• tanstack-react-virtual-example-dynamic
• tanstack-react-virtual-example-fixed
• tanstack-react-virtual-example-infinite-scroll
• tanstack-react-virtual-example-padding
• tanstack-react-virtual-example-scroll-padding
• tanstack-react-virtual-example-smooth-scroll
• tanstack-react-virtual-example-sticky
• tanstack-react-virtual-example-table
• tanstack-react-virtual-example-variable
• tanstack-react-virtual-example-window
• tanstack-svelte-virtual-example-dynamic
• tanstack-svelte-virtual-example-fixed
• tanstack-svelte-virtual-example-infinite-scroll
• tanstack-svelte-virtual-example-smooth-scroll
• tanstack-svelte-virtual-example-sticky
• tanstack-svelte-virtual-example-table
• tanstack-vue-virtual-example-dynamic
• tanstack-vue-virtual-example-fixed
• tanstack-vue-virtual-example-infinite-scroll
• tanstack-vue-virtual-example-padding
• tanstack-vue-virtual-example-scroll-padding
• tanstack-vue-virtual-example-smooth-scroll
• tanstack-vue-virtual-example-sticky
• tanstack-vue-virtual-example-table
• tanstack-vue-virtual-example-variable

@tanstack/angular-virtual

npm i https://pkg.pr.new/@tanstack/angular-virtual@1142

@tanstack/lit-virtual

npm i https://pkg.pr.new/@tanstack/lit-virtual@1142

@tanstack/react-virtual

npm i https://pkg.pr.new/@tanstack/react-virtual@1142

@tanstack/solid-virtual

npm i https://pkg.pr.new/@tanstack/solid-virtual@1142

@tanstack/svelte-virtual

npm i https://pkg.pr.new/@tanstack/svelte-virtual@1142

@tanstack/virtual-core

npm i https://pkg.pr.new/@tanstack/virtual-core@1142

@tanstack/vue-virtual

npm i https://pkg.pr.new/@tanstack/vue-virtual@1142

commit: 4d76010