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[Workers] Add changelog for @cloudflare/vitest-pool-workers Vitest 4 support - #29085

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[Workers] Add changelog for @cloudflare/vitest-pool-workers Vitest 4 support#29085
MattieTK wants to merge 2 commits into
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@MattieTK MattieTK commented Mar 18, 2026

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Adds the changelog entry for @cloudflare/vitest-pool-workers v0.13.0 (Vitest 4 support), spun out from #28908 which landed the docs changes separately.

Changes from the version reviewed in #28908:

  • Leads with the bug fix story rather than the breaking changes — library import resolution, Node.js specifier resolution, nodejs_compat auto-enabling, removal of the 8 KB provide data limit, Vitest UI fix
  • Adds a note that the codemod only covers vitest.config.ts, not test files (addresses irvinebroque and Cherry's comments)
  • Restores the isolatedStorage/singleWorker bullet under breaking changes with the --max-workers=1 --no-isolate workaround
  • Adds a copyable coding agent prompt covering all migration steps, including a link to the Vitest 4 upstream migration guide for test file changes

@MattieTK
MattieTK requested a review from a team as a code owner March 18, 2026 15:58
@MattieTK
MattieTK requested a review from a team March 18, 2026 15:58
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This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

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/src/content/changelog/ @cloudflare/pm-changelogs, @cloudflare/pcx-technical-writing

@MattieTK

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We're closing this and will roll it into the vitest-pool-workers graduation changelog which should happen soon™️ .

@MattieTK MattieTK closed this Mar 23, 2026
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github-actions Bot deleted the mattietk/vitest-pool-workers-vitest4-changelog branch May 18, 2026 05:23
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