Enable vitest --detect-async-leaks and fix uncovered leaks

[Copilot]

Upgrades vitest to 4.1.0-beta.5 to gain detectAsyncLeaks support, enables it globally, and fixes the 9 Promise leaks it uncovered.

• vitest upgrade: 4.0.18 → 4.1.0-beta.5 (detectAsyncLeaks added in vitest#9528)
• Enable permanently: detectAsyncLeaks: true in root vitest.config.ts
• Fix leaks in DocumentInternationalizationMenu.test.tsx: All 9 leaks are unresolved Promises from MotionValue.start() in motion-dom. The Popover component's framer-motion animations create Promises that never resolve in jsdom (no real animation engine). Fix uses fake timers to flush animation frames before/after cleanup:

beforeEach(() => {
  vi.useFakeTimers({shouldAdvanceTime: true})
})

afterEach(async () => {
  await vi.advanceTimersByTimeAsync(1000)
  cleanup()
  await vi.advanceTimersByTimeAsync(1000) // exit animations
  vi.clearAllMocks()
  vi.useRealTimers()
})

345 tests, 0 leaks.

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:

• sanity-cdn.com
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node node /home/REDACTED/work/plugins/plugins/dev/test-studio/node_modules/.bin/../sanity/bin/sanity build (dns block)
• vitest.dev
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node /home/REDACTED/work/_temp/ghcca-node/node/bin/node --enable-source-maps /home/REDACTED/work/_temp/copilot-developer-action-main/dist/index.js (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

Run the vitest suite with --detect-async-leaks and fix any issues it uncovers. Don't make any mistakes.

---

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Project	Deployment	Actions	Updated (UTC)
plugins-studio	Ready	Preview, Comment	Mar 1, 2026 10:43am

[changeset-bot]

🦋 Changeset detected

Latest commit: 770f51b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@sanity/document-internationalization	Patch

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