fix(react): use rolldownOptions instead of deprecated rollupOptions in optimizeDeps on rolldown-vite

[Copilot]

Description

Fixes #[issue_number] - CI failures in plugin-rsc e2e tests due to deprecation warning in stderr.

When rolldownVersion is detected in Vite, plugin-react was using the deprecated optimizeDeps.rollupOptions property. Vite 7 with Rolldown requires optimizeDeps.rolldownOptions instead.

Changed:

• packages/plugin-react/src/index.ts: Updated optimizeDeps.rollupOptions → optimizeDeps.rolldownOptions in the automatic JSX runtime configuration path

The deprecation warning was preventing tests from passing since they assert stderr is empty.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• workers.cloudflare.com
  • Triggering command: node /home/REDACTED/work/vite-plugin-react/vite-plugin-react/packages/plugin-rsc/examples/starter-cf-single/node_modules/.bin/../vite/bin/vite.js (dns block)
  • Triggering command: node /home/REDACTED/work/vite-plugin-react/vite-plugin-react/packages/plugin-rsc/examples/starter-cf-single/node_modules/.bin/../vite/bin/vite.js preview (dns block)
  • Triggering command: node /home/REDACTED/work/vite-plugin-react/vite-plugin-react/packages/plugin-rsc/examples/react-router/node_modules/.bin/../vite/bin/vite.js -c ./cf/vite.config.ts (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

fix CI error
Run pnpm -C packages/plugin-rsc test-e2e-ci --project="$BROWSER_NAME": packages/plugin-rsc/e2e/basic.test.ts#L212
2) [chromium] › e2e/basic.test.ts:208:3 › build-default › basic ──────────────────────────────────
Error: expect(received).toBe(expected) // Object.is equality

Expected: ""
Received: "`optimizeDeps.rollupOptions` / `ssr.optimizeDeps.rollupOptions` is deprecated. Use `optimizeDeps.rolldownOptions` instead. Note that this option may be set by a plugin. Set VITE_DEPRECATION_TRACE=1 to see where it is called.
"

  210 |     await page.goto(f.url())
  211 |     await waitForHydration(page)
> 212 |     expect(f.proc().stderr()).toBe('')
      |                               ^
  213 |   })
  214 |
  215 |   test('client component', async ({ page }) => {
    at /home/runner/work/vite-plugin-react/vite-plugin-react/packages/plugin-rsc/e2e/basic.test.ts:212:31

Run pnpm -C packages/plugin-rsc test-e2e-ci --project="$BROWSER_NAME": packages/plugin-rsc/e2e/basic.test.ts#L212

1. [chromium] › e2e/basic.test.ts:208:3 › dev-default › basic ────────────────────────────────────

Retry #2 ───────────────────────────────────────────────────────────────────────────────────────
Error: expect(received).toBe(expected) // Object.is equality

Expected: ""
Received: "`optimizeDeps.rollupOptions` / `ssr.optimizeDeps.rollupOptions` is deprecated. Use `optimizeDeps.rolldownOptions` instead. Note that this option may be set by a plugin. Set VITE_DEPRECATION_TRACE=1 to see where it is called.
"

  210 |     await page.goto(f.url())
  211 |     await waitForHydration(page)
> 212 |     expect(f.proc().stderr()).toBe('')
      |                               ^
  213 |   })
  214 |
  215 |   test('client component', async ({ page }) => {
    at /home/runner/work/vite-plugin-react/vite-plugin-react/packages/plugin-rsc/e2e/basic.test.ts:212:31

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[hi-ogawa]

@copilot the issue is likely in react plugin instead of rsc plugin

vite-plugin-react/packages/plugin-react/src/index.ts

Lines 165 to 167 in fc76c72

	optimizeDeps: {
	rollupOptions: { transform: { jsx: { runtime: 'automatic' } } },
	},

.

[Copilot]

@copilot the issue is likely in react plugin instead of rsc plugin https://github.com/vitejs/vite-plugin-react/blob/fc76c72e42b4a9ce16e3ac844fdc1039838820e2/packages/plugin-react/src/index.ts#L165-L16...

Correct! I've already fixed that in commit 4115707 by changing optimizeDeps.rollupOptions to optimizeDeps.rolldownOptions at line 166.

[sapphi-red]

Ah, I noticed that we have the same in other plugins as well.