chore(vitest): migrate to vitest browser mode - #2394
harry-whorlow wants to merge 13 commits into
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Included review availability: Your plan provides up to 8 included reviews per hour; 7 remain after this review. 📝 WalkthroughWalkthroughThe test configurations across the form packages now use Playwright-driven headless Chromium instead of jsdom. Dependency optimization and browser-specific setup were added. Angular uses standard browser testing, and React strict-mode configuration reads from Vite environment variables. ChangesBrowser test migration
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Other Suggested reviewers: Merge Risk: ⚪ Minimal · up to The test migration has no established failure or merge-blocking risk and is ready for normal CI validation. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
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| Command | Status | Duration | Result |
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nx affected --targets=test:sherif,test:knip,tes... |
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nx run-many --target=build --exclude=examples/** |
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☁️ Nx Cloud last updated this comment at 2026-09-18 15:10:42 UTC
🚀 Changeset Version Preview7 package(s) bumped directly, 6 bumped as dependents. 🟨 Minor bumps
🟩 Patch bumps
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Actionable comments posted: 1
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In `@packages/svelte-form/vite.config.ts`:
- Line 33: Remove the resolve.conditions override from the Vite configuration so
Vite preserves its default client resolver conditions, including module and
development|production; do not add a custom browser-only condition list.
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package.jsonpackages/angular-form/tests/test-setup.tspackages/angular-form/vite.config.tspackages/form-core/vitest.config.tspackages/lit-form/vite.config.tspackages/preact-form/vitest.config.tspackages/react-form-devtools/vite.config.tspackages/react-form-nextjs/vite.config.tspackages/react-form-start/vite.config.tspackages/react-form/tests/test-setup.tspackages/react-form/vitest.config.tspackages/solid-form-devtools/vitest.config.tspackages/solid-form/vitest.config.tspackages/svelte-form/vite.config.tspackages/vue-form/tests/test-setup.tspackages/vue-form/vitest.config.ts
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## alpha #2394 +/- ##
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Coverage ? 95.20%
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Files ? 113
Lines ? 4383
Branches ? 990
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Hits ? 4173
Misses ? 200
Partials ? 10 ☔ View full report in Codecov by Harness. 🚀 New features to boost your workflow:
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LeCarbonator
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Looks alright, just some minor things that need a bit of attention.
| if (typeof globalThis.process === 'undefined') { | ||
| ;(globalThis as any).process = { env: {} } | ||
| } | ||
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What's this about? Seems like a leftover from migrating process.env stuff to import.meta?
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This was a shim for the process variable which @testing-library/vue assumes exists and fails without. Speaking to Vladimir he recommends we use the vite-browser librarys instead of testing-library and it's adapters.
| optimizeDeps: { | ||
| include: [ | ||
| '@testing-library/jest-dom/vitest', | ||
| '@testing-library/vue', | ||
| 'vue', | ||
| 'vue/server-renderer', | ||
| '@tanstack/vue-store', | ||
| ], | ||
| }, |
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All the new vitest config files specifically include optimizeDeps. Any important reason why? Some mention the form-core package, others don't, most mention jest-dom etc.
A second look would be good.
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I've migrate to vitest-browser for everything except preact since it doesn’t yet have the renderHook test. I'm going to try get it merged upstream. |

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