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test: generate snapshots per stats test case#20785

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alexander-akait merged 1 commit intomainfrom
stat-per-snap-shot
Apr 7, 2026
Merged

test: generate snapshots per stats test case#20785
alexander-akait merged 1 commit intomainfrom
stat-per-snap-shot

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@hai-x
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@hai-x hai-x commented Apr 7, 2026

Summary

What kind of change does this PR introduce?

Follow up of #20675.

Did you add tests for your changes?

Existing

Does this PR introduce a breaking change?

No

If relevant, what needs to be documented once your changes are merged or what have you already documented?

No

Use of AI

No

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changeset-bot Bot commented Apr 7, 2026

⚠️ No Changeset found

Latest commit: 1cd8804

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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github-actions Bot commented Apr 7, 2026

This PR is packaged and the instant preview is available (955a68c).

Install it locally:

  • npm
npm i -D webpack@https://pkg.pr.new/webpack@955a68c
  • yarn
yarn add -D webpack@https://pkg.pr.new/webpack@955a68c
  • pnpm
pnpm add -D webpack@https://pkg.pr.new/webpack@955a68c

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github-actions Bot commented Apr 7, 2026

Types Coverage

Coverage after merging stat-per-snap-shot into main will be
98.95%
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@codecov
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codecov Bot commented Apr 7, 2026

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.41%. Comparing base (91aa5da) to head (1cd8804).
⚠️ Report is 3 commits behind head on main.

❌ Your changes status has failed because you have indirect coverage changes. Learn more about Unexpected Coverage Changes and reasons for indirect coverage changes.

Additional details and impacted files
@@            Coverage Diff             @@
##             main   #20785      +/-   ##
==========================================
- Coverage   91.42%   91.41%   -0.01%     
==========================================
  Files         559      559              
  Lines       55134    55150      +16     
  Branches    14547    14556       +9     
==========================================
+ Hits        50408    50418      +10     
- Misses       4726     4732       +6     
Flag Coverage Δ
integration 90.41% <ø> (-0.01%) ⬇️
test262 41.95% <ø> (+0.01%) ⬆️
unit 36.17% <ø> (-0.02%) ⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

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@hai-x
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hai-x commented Apr 7, 2026

Here's a more readable diff for the change in test/StatsTestCases.basictest.js:

image

@codspeed-hq
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codspeed-hq Bot commented Apr 7, 2026

Merging this PR will degrade performance by 32.33%

⚡ 4 improved benchmarks
❌ 1 regressed benchmark
✅ 139 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
Memory benchmark "many-modules-esm", scenario '{"name":"mode-production","mode":"production"}' 9.4 MB 7.6 MB +23.15%
Memory benchmark "lodash", scenario '{"name":"mode-development","mode":"development"}' 5.3 MB 4.1 MB +29.95%
Memory benchmark "many-modules-commonjs", scenario '{"name":"mode-production","mode":"production"}' 7.2 MB 10.7 MB -32.33%
Memory benchmark "many-chunks-commonjs", scenario '{"name":"mode-production","mode":"production"}' 8.8 MB 6.8 MB +30.31%
Memory benchmark "react", scenario '{"name":"mode-development-rebuild","mode":"development","watch":true}' 863.5 KB 645.1 KB +33.86%

Comparing stat-per-snap-shot (1cd8804) with main (47bb540)

Open in CodSpeed

@hai-x hai-x marked this pull request as ready for review April 7, 2026 17:29
@alexander-akait alexander-akait merged commit 955a68c into main Apr 7, 2026
96 of 99 checks passed
@alexander-akait alexander-akait deleted the stat-per-snap-shot branch April 7, 2026 19:00
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