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Addon-Vitest: Support Vitest 4#32819

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ndelangen merged 39 commits into
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valentin/vitest-v4-support-2
Oct 24, 2025
Merged

Addon-Vitest: Support Vitest 4#32819
ndelangen merged 39 commits into
nextfrom
valentin/vitest-v4-support-2

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@yannbf yannbf commented Oct 24, 2025

Closes #

What I did

Checklist for Contributors

Testing

The changes in this PR are covered in the following automated tests:

  • stories
  • unit tests
  • integration tests
  • end-to-end tests

Manual testing

This section is mandatory for all contributions. If you believe no manual test is necessary, please state so explicitly. Thanks!

Documentation

  • Add or update documentation reflecting your changes
  • If you are deprecating/removing a feature, make sure to update
    MIGRATION.MD

Checklist for Maintainers

  • When this PR is ready for testing, make sure to add ci:normal, ci:merged or ci:daily GH label to it to run a specific set of sandboxes. The particular set of sandboxes can be found in code/lib/cli-storybook/src/sandbox-templates.ts

  • Make sure this PR contains one of the labels below:

    Available labels
    • bug: Internal changes that fixes incorrect behavior.
    • maintenance: User-facing maintenance tasks.
    • dependencies: Upgrading (sometimes downgrading) dependencies.
    • build: Internal-facing build tooling & test updates. Will not show up in release changelog.
    • cleanup: Minor cleanup style change. Will not show up in release changelog.
    • documentation: Documentation only changes. Will not show up in release changelog.
    • feature request: Introducing a new feature.
    • BREAKING CHANGE: Changes that break compatibility in some way with current major version.
    • other: Changes that don't fit in the above categories.

🦋 Canary release

This PR does not have a canary release associated. You can request a canary release of this pull request by mentioning the @storybookjs/core team here.

core team members can create a canary release here or locally with gh workflow run --repo storybookjs/storybook publish.yml --field pr=<PR_NUMBER>

Summary by CodeRabbit

  • New Features

    • Vitest v4 + Playwright browser testing support and updated browser test defaults.
    • New Next.js 15 templates (Webpack & Vite).
    • Added a portable React + Vitest Storybook test project with example stories and components.
  • Tests

    • Large expansion of end-to-end and Playwright suites plus new Storybook/Vitest story tests.
  • Chores

    • CI workflows reorganized with new test jobs and increased parallelism; dev-dependency updates for Vitest ecosystem.

valentinpalkovic and others added 30 commits October 1, 2025 14:25
This reverts commit 3a0d302.
@ndelangen ndelangen deleted the valentin/vitest-v4-support-2 branch October 24, 2025 10:17
@ndelangen ndelangen added the patch:yes Bugfix & documentation PR that need to be picked to main branch label Oct 24, 2025
@github-actions github-actions Bot mentioned this pull request Oct 24, 2025
6 tasks
ndelangen added a commit that referenced this pull request Oct 24, 2025
Addon-Vitest: Support Vitest 4
(cherry picked from commit 48a5a18)
@github-actions github-actions Bot added the patch:done Patch/release PRs already cherry-picked to main/release branch label Oct 24, 2025
@github-actions github-actions Bot mentioned this pull request Oct 24, 2025
12 tasks
const projects = this.vitest!.getModuleProjects(filepath);
projects.forEach(({ server, browser }) => {
// @ts-expect-error `server` only exists in Vitest 3
this.vitest!.projects.forEach(({ browser, vite, server }) => {
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vite already exists in Vitest 3

@@ -165,11 +164,15 @@ export class VitestManager {
}

private updateLastChanged(filepath: string) {
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this whole function can be replaced with invalidateFile which is available from Vitest 3 and was added specifically for Storybook

'vitest.shims.d.ts',
'/// <reference types="@vitest/browser/providers/playwright" />'
isVitest4OrNewer
? '/// <reference types="@vitest/browser-playwright" />'
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There is no need for shims in Vitest 4

@ndelangen ndelangen removed the patch:yes Bugfix & documentation PR that need to be picked to main branch label Oct 28, 2025
This was referenced Dec 1, 2025
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addon: vitest bug ci:daily Run the CI jobs that normally run in the daily job. patch:done Patch/release PRs already cherry-picked to main/release branch

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4 participants