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Merged
merged 1 commit into from
Apr 11, 2025

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AriPerkkio
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Description

  • Expose code coverage debug timers via DEBUG=vitest:coverage environment variable
  • Adds documentation for code coverage performance profiling

I've seen and heard reports about slow code coverage report generation in past. Always user's projects have been picking some minified JS due to agressive coverage.all (to be fixed in #6956), and processing those makes Vite transform and other processing really slow.

With DEBUG=vitest:coverage users should be able to detect such files when Vitest seems to be "stuck".

Please don't delete this checklist! Before submitting the PR, please make sure you do the following:

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  • Run the tests with pnpm test:ci.

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Changesets

  • Changes in changelog are generated from PR name. Please, make sure that it explains your changes in an understandable manner. Please, prefix changeset messages with feat:, fix:, perf:, docs:, or chore:.

@AriPerkkio AriPerkkio changed the title fix: expose coverage generation debug timers fix(coverage): expose debug timers Apr 10, 2025
@AriPerkkio AriPerkkio changed the title fix(coverage): expose debug timers fix(coverage): expose profiling timers Apr 10, 2025
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@AriPerkkio AriPerkkio force-pushed the chore/coverage-debug-timers branch from d49b498 to e74c9f2 Compare April 10, 2025 14:19
@AriPerkkio AriPerkkio merged commit 5652bf9 into vitest-dev:main Apr 11, 2025
18 of 22 checks passed
@AriPerkkio AriPerkkio deleted the chore/coverage-debug-timers branch April 11, 2025 05:24
schogges pushed a commit to kumahq/kuma-gui that referenced this pull request Apr 23, 2025
v3.1.2
   🐞 Bug Fixes
Add global chai variable in vitest/globals (fix: #7474)  -  by @​Jay-Karia in vitest-dev/vitest#7771 and vitest-dev/vitest#7474 (d9297)
Prevent modifying test.exclude when same object passed in coverage.exclude  -  by @​AriPerkkio in vitest-dev/vitest#7774 (c3751)
Fix already hoisted mock  -  by @​hi-ogawa in vitest-dev/vitest#7815 (773b1)
Fix test.scoped inheritance  -  by @​hi-ogawa in vitest-dev/vitest#7814 (db6c3)
Remove pointer-events-none after resizing the left panel  -  by @​alexprudhomme in vitest-dev/vitest#7811 (a7e77)
Default to run mode when stdin is not a TTY  -  by @​kentonv, @​hi-ogawa and @​sheremet-va in vitest-dev/vitest#7673 (6358f)
Use happy-dom/jsdom types for envionmentOptions  -  by @​hi-ogawa in vitest-dev/vitest#7795 (67430)
browser:
Fix transform error before browser server initialization  -  by @​hi-ogawa in vitest-dev/vitest#7783 (5f762)
Fix mocking from outside of root  -  by @​hi-ogawa in vitest-dev/vitest#7789 (03f55)
Scale iframe for non ui case  -  by @​hi-ogawa in vitest-dev/vitest#6512 (c3374)
coverage:
await profiler calls  -  by @​AriPerkkio in vitest-dev/vitest#7763 (795a6)
Expose profiling timers  -  by @​AriPerkkio in vitest-dev/vitest#7820 (5652b)
deps:
Update all non-major dependencies  -  in vitest-dev/vitest#7765 (7c3df)
Update all non-major dependencies  -  in vitest-dev/vitest#7831 (15701)
runner:
Correctly call test hooks and teardown functions  -  by @​sheremet-va in vitest-dev/vitest#7775 (3c00c)
Show stacktrace on test timeout error  -  by @​hi-ogawa in vitest-dev/vitest#7799 (df33b)
ui:
Load panel sizes from storage on initial load  -  by @​userquin in vitest-dev/vitest#7265 (6555d)
vite-node:
Named export should overwrite export all  -  by @​hi-ogawa in vitest-dev/vitest#7846 (5ba0d)
Add ERR_MODULE_NOT_FOUND code error if module cannot be loaded  -  by @​sheremet-va in vitest-dev/vitest#7776 (f9eac)
   🏎 Performance
browser: Improve browser parallelisation  -  by @​sheremet-va in vitest-dev/vitest#7665 (816a5)
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