docs(start): fix ISR guide using non-existent prerender.routes option

[rumitvn]

Closes #7580

Problem

The ISR guide configures prerendering with a prerender.routes array:

tanstackStart({
  prerender: {
    routes: ['/blog', '/blog/posts/*'],
    crawlLinks: true,
  },
})

routes is not a field on the prerender schema (start-plugin-core/src/schema.ts — top-level prerender only has enabled, concurrency, filter, failOnError, autoStaticPathsDiscovery, maxRedirects plus the shared pagePrerenderOptionsSchema fields). Following the guide produces an invalid config.

Fix

Replace prerender.routes with the supported pages array (entry paths) plus prerender.crawlLinks, which discovers and prerenders the linked dynamic routes — matching the Static Prerendering guide and the schema:

tanstackStart({
  prerender: {
    enabled: true,
    crawlLinks: true,
  },
  pages: [{ path: '/blog' }],
})

Applied to all four occurrences (Vite + Rsbuild tabs, in both the time-based and "combine with static prerendering" sections). Docs-only change.

Summary by CodeRabbit

• Documentation
  • Updated ISR configuration examples for TanStack Start with new prerender setup options, including enabled: true, crawlLinks: true, and explicit page configuration, replacing the previous route-based approach.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 48c754e3-8a34-4f5a-9e5d-e067cf013811

📥 Commits

Reviewing files that changed from the base of the PR and between a2b9d51 and c8f6d5e.

📒 Files selected for processing (1)

• docs/start/framework/react/guide/isr.md

---

📝 Walkthrough

Walkthrough

The ISR documentation guide is updated to correct outdated configuration examples. Four parallel code samples—Vite and Rsbuild variants appearing in two separate sections—now use the valid prerender schema with enabled: true, crawlLinks: true, and pages: [{ path: '/blog' }] in place of the non-existent routes field.

Changes

ISR Guide Documentation Update

Layer / File(s)	Summary
ISR prerender configuration examples docs/start/framework/react/guide/isr.md	All four code sample blocks are corrected to use the valid prerender schema: enabled: true, crawlLinks: true, and an explicit pages array, replacing the outdated routes property across Vite and Rsbuild examples in two document sections.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Suggested labels

documentation

Poem

📖 A rabbit hops through docs so fine,
Where prerender routes once did align,
Now crawlLinks and pages shine,
The ISR guide's now all divine! 🐰✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: fixing the ISR guide that incorrectly documented the non-existent prerender.routes option.
Linked Issues check	✅ Passed	The PR directly addresses issue #7580 by replacing invalid prerender.routes configuration with the correct approach using enabled: true, crawlLinks: true, and the pages array.
Out of Scope Changes check	✅ Passed	All changes are directly related to fixing the ISR documentation as specified in issue #7580; no out-of-scope modifications are present.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands and usage tips.}