[vitest-pool-workers] Support @voidzero-dev/vite-plus-test as vitest alternative

[penalosa]

Fixes #13001.

When users run tests via Vite+ (@voidzero-dev/vite-plus-test) with the recommended pnpm overrides, two things break:

1. Version check rejects 0.1.14 — assertCompatibleVitestVersion compares the distribution's own version (0.1.14) against our peerDependencies.vitest constraint (^4.1.0). Fix: read the bundledVersions.vitest field from the distribution's package.json to get the real upstream version (e.g. 4.1.1).

2. Disallowed operation called within global scope — vite-plus-test eagerly initialises @sinonjs/fake-timers during module loading, which calls setTimeout. Our monkeypatchedSetTimeout guard blocks this because the call originates from @voidzero-dev/vite-plus-test rather than vitest. Fix: add @voidzero-dev/vite-plus-test to the fromVitest allowlist regex.

Setup required by users

Per vite-plus's bundling docs, users must configure pnpm overrides to alias vitest to @voidzero-dev/vite-plus-test:

{
  "pnpm": {
    "overrides": {
      "vitest": "npm:@voidzero-dev/vite-plus-test@0.1.14",
      "@vitest/runner": "npm:@voidzero-dev/vite-plus-test@0.1.14",
      "@vitest/snapshot": "npm:@voidzero-dev/vite-plus-test@0.1.14"
    }
  }
}

Verified end-to-end in an isolated reproduction project outside the monorepo.

---

• Tests
  • Tests included/updated
  • Automated tests not possible - manual testing has been completed as follows:
  • Additional testing not necessary because: verified in an isolated reproduction project outside the monorepo with vite-plus@0.1.14 + pnpm overrides. Cannot add a CI fixture because vite-plus requires the recommended pnpm overrides setup, which would mess up the rest of workers-sdk
• Public documentation
  • Cloudflare docs PR(s):
  • Documentation not necessary because: follows vite-plus's existing setup guide

---

[changeset-bot]

🦋 Changeset detected

Latest commit: 2ec74bd

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[github-actions]

✅ All changesets look good

[ask-bonk]

I'm Bonk, and I've done a quick review of your PR.

Adds support for @voidzero-dev/vite-plus-test as an alternative vitest distribution by extracting the upstream vitest version from @vitest/* deps and allowlisting the package in the setTimeout monkeypatch.

One minor robustness concern:

1. getUpstreamVitestVersion returns the raw dependency version string from peerDependencies/devDependencies. Today vite-plus-test@0.1.14 pins these to exact versions (e.g. "@vitest/ui": "4.1.1"), but if a future release uses a range like ^4.1.1, semverSatisfies would receive an invalid version string, silently return false, and emit a spurious compatibility warning. A defensive semver.coerce() call (or a comment documenting the assumption) would make this more resilient.

[ask-bonk]

Review posted successfully on PR #13075. I flagged one minor robustness concern: getUpstreamVitestVersion returns raw dependency version strings that could contain range prefixes (e.g., ^4.1.1) in future releases, which would cause semverSatisfies to silently return false and emit a spurious compatibility warning. I included a concrete suggestion to strip range prefixes defensively.

github run

[pkg-pr-new]

create-cloudflare

npm i https://pkg.pr.new/create-cloudflare@13075

@cloudflare/kv-asset-handler

npm i https://pkg.pr.new/@cloudflare/kv-asset-handler@13075

miniflare

npm i https://pkg.pr.new/miniflare@13075

@cloudflare/pages-shared

npm i https://pkg.pr.new/@cloudflare/pages-shared@13075

@cloudflare/unenv-preset

npm i https://pkg.pr.new/@cloudflare/unenv-preset@13075

@cloudflare/vite-plugin

npm i https://pkg.pr.new/@cloudflare/vite-plugin@13075

@cloudflare/vitest-pool-workers

npm i https://pkg.pr.new/@cloudflare/vitest-pool-workers@13075

@cloudflare/workers-editor-shared

npm i https://pkg.pr.new/@cloudflare/workers-editor-shared@13075

wrangler

npm i https://pkg.pr.new/wrangler@13075

commit: 2ec74bd

[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

View in Devin Review to see 2 additional findings.

[workers-devprod]

Codeowners approval required for this PR:

• ✅ @cloudflare/wrangler

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