example PR introducing performance regression

[mdjastrzebski]

Summary

This PR intentionally introduces performance regression to showcase how Reassure detects and present such case.

Test plan

[github-actions]

Performance Comparison Report

• Current: f335d53 - 2025-06-05 15:47:52Z
• Baseline: main (65f2227) - 2025-06-05 15:47:31Z

Significant Changes To Duration

Show entries

Name	Type	Duration	Count
Web Vite - AsyncComponent (50 runs)	render	60.9 ms → 66.3 ms (+5.4 ms, +8.8%) 🔴	4 → 5 (+1, +25.0%) 🔴
Web Vite - TestList (100 items)	render	14.8 ms → 19.5 ms (+4.7 ms, +31.8%) 🔴	1 → 2 (+1, +100.0%) 🔴

Show details

Name	Type	Duration	Count
Web Vite - AsyncComponent (50 runs)	render	Baseline Mean: 60.9 ms Stdev: 2.5 ms (4.1%) Runs: 60.5 60.8 60.3 61.8 61.3 61.3 58.6 52.0 61.1 61.2 61.7 61.0 61.4 61.2 61.1 62.0 61.2 61.5 52.5 61.5 61.4 61.0 61.4 66.1 63.9 62.8 60.9 61.4 60.8 61.1 60.6 64.1 63.3 62.1 58.6 60.6 Warmup runs: 61.4 Removed outliers: 37.5 41.5 33.3 45.6 34.0 37.8 45.8 33.5 37.5 39.5 35.9 37.3 39.1 33.2 Current Mean: 66.3 ms Stdev: 10.0 ms (15.1%) Runs: 71.6 71.4 42.5 72.1 72.1 71.8 58.5 72.1 72.1 73.8 58.8 58.0 72.2 78.3 69.1 52.5 71.8 72.2 72.4 43.1 72.0 71.8 72.1 58.2 72.2 73.2 72.7 61.8 41.0 63.9 72.2 72.8 65.9 51.6 72.4 73.9 72.1 43.4 71.8 72.2 72.5 58.6 Warmup runs: 72.5 Removed outliers: 38.5 38.7 38.5 38.4 38.4 38.5 38.8 38.7	Baseline Mean: 4 Stdev: 0 (0.0%) Runs: 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Render issues: Current Mean: 5 Stdev: 0 (0.0%) Runs: 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 Render issues: - Initial updates: 1
Web Vite - TestList (100 items)	render	Baseline Mean: 14.8 ms Stdev: 0.6 ms (4.3%) Runs: 14.8 16.5 14.6 14.8 14.5 14.7 14.6 14.3 14.3 14.5 Warmup runs: 14.7 Removed outliers: (none) Current Mean: 19.5 ms Stdev: 0.2 ms (1.0%) Runs: 19.7 19.9 19.4 19.4 19.5 19.5 19.4 19.3 19.4 19.1 Warmup runs: 20.0 Removed outliers: (none)	Baseline Mean: 1 Stdev: 0 (0.0%) Runs: 1 1 1 1 1 1 1 1 1 1 Render issues: Current Mean: 2 Stdev: 0 (0.0%) Runs: 2 2 2 2 2 2 2 2 2 2 Render issues: - Initial updates: 1

Meaningless Changes To Duration

Show entries

Name	Type	Duration	Count
Web Vite - AsyncComponent (10 runs)	render	52.1 ms → 58.9 ms (+6.8 ms, +13.0%)	4 → 5 (+1, +25.0%) 🔴

Show details

Name	Type	Duration	Count
Web Vite - AsyncComponent (10 runs)	render	Baseline Mean: 52.1 ms Stdev: 10.0 ms (19.3%) Runs: 55.5 56.7 58.7 37.6 45.4 60.7 60.4 61.2 51.4 33.4 Warmup runs: 66.3 Removed outliers: (none) Current Mean: 58.9 ms Stdev: 12.2 ms (20.7%) Runs: 65.4 69.2 56.0 38.9 63.0 70.9 71.1 63.5 39.0 51.8 Warmup runs: 75.0 Removed outliers: (none)	Baseline Mean: 4 Stdev: 0 (0.0%) Runs: 4 4 4 4 4 4 4 4 4 4 Render issues: Current Mean: 5 Stdev: 0 (0.0%) Runs: 5 5 5 5 5 5 5 5 5 5 Render issues: - Initial updates: 1

Render Count Changes

Show entries

Name	Type	Duration	Count
Web Vite - AsyncComponent (10 runs)	render	52.1 ms → 58.9 ms (+6.8 ms, +13.0%)	4 → 5 (+1, +25.0%) 🔴
Web Vite - AsyncComponent (50 runs)	render	60.9 ms → 66.3 ms (+5.4 ms, +8.8%) 🔴	4 → 5 (+1, +25.0%) 🔴
Web Vite - TestList (100 items)	render	14.8 ms → 19.5 ms (+4.7 ms, +31.8%) 🔴	1 → 2 (+1, +100.0%) 🔴

Show details

Name	Type	Duration	Count
Web Vite - AsyncComponent (10 runs)	render	Baseline Mean: 52.1 ms Stdev: 10.0 ms (19.3%) Runs: 55.5 56.7 58.7 37.6 45.4 60.7 60.4 61.2 51.4 33.4 Warmup runs: 66.3 Removed outliers: (none) Current Mean: 58.9 ms Stdev: 12.2 ms (20.7%) Runs: 65.4 69.2 56.0 38.9 63.0 70.9 71.1 63.5 39.0 51.8 Warmup runs: 75.0 Removed outliers: (none)	Baseline Mean: 4 Stdev: 0 (0.0%) Runs: 4 4 4 4 4 4 4 4 4 4 Render issues: Current Mean: 5 Stdev: 0 (0.0%) Runs: 5 5 5 5 5 5 5 5 5 5 Render issues: - Initial updates: 1
Web Vite - AsyncComponent (50 runs)	render	Baseline Mean: 60.9 ms Stdev: 2.5 ms (4.1%) Runs: 60.5 60.8 60.3 61.8 61.3 61.3 58.6 52.0 61.1 61.2 61.7 61.0 61.4 61.2 61.1 62.0 61.2 61.5 52.5 61.5 61.4 61.0 61.4 66.1 63.9 62.8 60.9 61.4 60.8 61.1 60.6 64.1 63.3 62.1 58.6 60.6 Warmup runs: 61.4 Removed outliers: 37.5 41.5 33.3 45.6 34.0 37.8 45.8 33.5 37.5 39.5 35.9 37.3 39.1 33.2 Current Mean: 66.3 ms Stdev: 10.0 ms (15.1%) Runs: 71.6 71.4 42.5 72.1 72.1 71.8 58.5 72.1 72.1 73.8 58.8 58.0 72.2 78.3 69.1 52.5 71.8 72.2 72.4 43.1 72.0 71.8 72.1 58.2 72.2 73.2 72.7 61.8 41.0 63.9 72.2 72.8 65.9 51.6 72.4 73.9 72.1 43.4 71.8 72.2 72.5 58.6 Warmup runs: 72.5 Removed outliers: 38.5 38.7 38.5 38.4 38.4 38.5 38.8 38.7	Baseline Mean: 4 Stdev: 0 (0.0%) Runs: 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Render issues: Current Mean: 5 Stdev: 0 (0.0%) Runs: 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 Render issues: - Initial updates: 1
Web Vite - TestList (100 items)	render	Baseline Mean: 14.8 ms Stdev: 0.6 ms (4.3%) Runs: 14.8 16.5 14.6 14.8 14.5 14.7 14.6 14.3 14.3 14.5 Warmup runs: 14.7 Removed outliers: (none) Current Mean: 19.5 ms Stdev: 0.2 ms (1.0%) Runs: 19.7 19.9 19.4 19.4 19.5 19.5 19.4 19.3 19.4 19.1 Warmup runs: 20.0 Removed outliers: (none)	Baseline Mean: 1 Stdev: 0 (0.0%) Runs: 1 1 1 1 1 1 1 1 1 1 Render issues: Current Mean: 2 Stdev: 0 (0.0%) Runs: 2 2 2 2 2 2 2 2 2 2 Render issues: - Initial updates: 1

Render Issues

Name	Initial Updates	Redundant Updates
Web Vite - AsyncComponent (10 runs)	1 🔴	-
Web Vite - AsyncComponent (50 runs)	1 🔴	-
Web Vite - TestList (100 items)	1 🔴	-

Added Entries

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Removed Entries

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Generated by 🚫 dangerJS against 416970d

[Victorvikson1996]

How can Use this

[mdjastrzebski]

@Victorvikson1996 you can learn more about Reassure here: docs, GitHub.

[Victorvikson1996]

Thank you so much @mdjastrzebski