ST-2026-212 · SDKs, clients & toolchains
Cloudflare renames Workers Vitest integration to @cloudflare/vitest-plugin
Cloudflare published version 1 of its Workers Vitest integration as @cloudflare/vitest-plugin on 19 August 2026, replacing the former @cloudflare/vitest-pool-workers package name while keeping the Vitest configuration API unchanged.
Previous state
Workers Vitest projects depended on and imported @cloudflare/vitest-pool-workers, including its TypeScript types and subpath imports.
Current state
Version 1 is published as @cloudflare/vitest-plugin. Existing projects must update the dependency name, imports and TypeScript types entries; the Vitest configuration API itself is unchanged.
Affected users
Who needs to care
Cloudflare Workers projects using the official Vitest integration.
Required response
What to do
Rename the dependency and imports to @cloudflare/vitest-plugin, update TypeScript types entries, and validate tests; Cloudflare provides a codemod for the migration.
Evidence boundary
What the source does not prove
The source proves the package rename and migration steps. It does not state a removal deadline for every published @cloudflare/vitest-pool-workers version, and the Vitest configuration API is explicitly unchanged.
Lifecycle history
Dated event sequence
- @cloudflare/vitest-plugin version 1 published
Cloudflare renamed the Workers Vitest integration and documented dependency/import/types migration.
Evidence ledger
First-party sources
- 01Cloudflare — @cloudflare/vitest-pool-workers is now @cloudflare/vitest-plugin
Official Cloudflare changelog · 2026-08-19
Open official source ↗