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vitest@4: Non-deterministic module mocking behavior

needs reproduction

pending triage

Status: Open.

Bug

#8815 In vitest-dev/vitest;

· evan-sift opened on Oct 25, 2025

vitest-browser-react(v4): Element reference error when testing Radix DropdownMenu with <code>modal={true}</code>

pending triage

Status: Open.

Bug

#8810 In vitest-dev/vitest;

· onyedikachi23 opened on Oct 25, 2025

Performance regression when upgrading from Vitest v3 to v4 with single worker thread

pending triage

Status: Open.

Bug

#8808 In vitest-dev/vitest;

· bpetetot opened on Oct 25, 2025

Mocked type requires to mock private properties

pending triage

Status: Open.

Bug

#8805 In vitest-dev/vitest;

· cexbrayat opened on Oct 25, 2025

Vitest 4 mock types don't allow class implementation

pending triage

Status: Open.

Bug

#8803 In vitest-dev/vitest;

· notaphplover opened on Oct 24, 2025

Vitest no longer correctly resolves NodeJS Builtin Modules

pending triage

Status: Open.

Bug

#8802 In vitest-dev/vitest;

· leeyi45 opened on Oct 24, 2025

Vitest resolves to wrong vue dependency in pnpm mono-repo

pending triage

Status: Open.

Bug

#8799 In vitest-dev/vitest;

· JarvisH opened on Oct 24, 2025

Unable to update individual vitest 4 dependencies

pending triage

Status: Open.

Bug

#8797 In vitest-dev/vitest;

· doberkofler opened on Oct 24, 2025

Forks pool <code>stdout</code> not piped to main process

feat: reportersIssues and PRs related to Vitest reportersIssues and PRs related to Vitest reporters

p3-minor-bugAn edge case that only affects very specific usage (priority)An edge case that only affects very specific usage (priority)

Status: Open.

Bug

#8784 In vitest-dev/vitest;

· AriPerkkio opened on Oct 23, 2025

Node v25 breaks tests with Web Storage API

pending triage

Status: Open.

Bug

#8757 In vitest-dev/vitest;

· simonmysun opened on Oct 22, 2025

Rolldown CI Failures

pending triage

Status: Open.

Bug

#8754 In vitest-dev/vitest;

· sheremet-va opened on Oct 21, 2025

Run all tests, but report partial coverage, for CI purposes

feat: coverageIssues and PRs related to the coverage featureIssues and PRs related to the coverage feature

p2-nice-to-haveNot breaking anything but nice to have (priority)Not breaking anything but nice to have (priority)

Status: Open.

Feature

#8747 In vitest-dev/vitest;

· kneczaj opened on Oct 20, 2025