●Change8

v4.0.0-beta.19

Breaking Changes
📦 vitestView on GitHub →
⚠ 1 breaking🐛 7 fixes🔧 6 symbols

Summary

Vitest v4.0.0-beta.19 removes the tinypool dependency and includes several bug fixes across browser, coverage, and module‑runner areas.

⚠️ Breaking Changes

  • Pools have been rewritten to no longer depend on `tinypool`. Code that imported or configured `tinypool` will break; remove `tinypool` usage or update pool configuration to the new API.

Migration Steps

  1. Remove any direct imports or configuration of `tinypool`.
  2. Update pool usage to the new built‑in pool implementation provided by Vitest.
  3. Run the test suite and address any errors related to missing `tinypool`.

🐛 Bug Fixes

  • Disabled trackUnhandledErrors when inspector is enabled.
  • Browser: Allowed service workers to mock the network in Chromium without breaking vi.mock.
  • Browser: Added support for sync `not.toBeInTheDocument()`.
  • Coverage: V8 now ignores Vite's generated CJS import helpers.
  • Coverage: `coverage.exclude` now keeps only string entries.
  • Module-runner: Fixed resolution of `resolvedSources`.
  • Module-runner: Added support for `getBuiltins`.

🔧 Affected Symbols

tinypoolpoolmodule-runnercoverage.excluderesolvedSourcesgetBuiltins