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: 395cfe7 - 2025-01-31 13:12:48Z
• Baseline: main (2ae59bd) - 2025-01-31 13:12:28Z

Significant Changes To Duration

Show entries

Name	Type	Duration	Count
Web Vite - AsyncComponent (10 runs)	render	41.4 ms → 49.1 ms (+7.7 ms, +18.5%) 🔴	4 → 5 (+1, +25.0%) 🔴
Web Vite - AsyncComponent (50 runs)	render	41.6 ms → 49.1 ms (+7.5 ms, +18.0%) 🔴	4 → 5 (+1, +25.0%) 🔴
Web Vite - TestList (100 items)	render	10.7 ms → 14.5 ms (+3.8 ms, +35.6%) 🔴🔴	1 → 2 (+1, +100.0%) 🔴

Show details

Name	Type	Duration	Count
Web Vite - AsyncComponent (10 runs)	render	Baseline Mean: 41.4 ms Stdev: 0.3 ms (0.7%) Runs: 41.3 41.6 41.1 41.3 41.4 42.0 41.4 41.7 41.0 41.4 Warmup runs: 51.1 Current Mean: 49.1 ms Stdev: 1.2 ms (2.5%) Runs: 48.7 52.5 48.9 48.5 48.5 48.8 49.2 48.2 48.6 49.0 Warmup runs: 65.1	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: 41.6 ms Stdev: 1.3 ms (3.2%) Runs: 41.4 41.3 41.4 41.4 41.2 41.5 40.8 41.5 41.4 41.2 41.5 40.7 42.8 41.4 41.4 41.2 41.0 41.1 42.4 42.6 47.9 41.4 41.4 41.2 41.1 41.1 41.4 47.6 41.3 40.9 41.5 41.6 41.4 41.3 41.9 41.4 41.5 41.2 41.3 40.7 41.2 41.2 41.3 41.0 41.1 41.2 40.9 41.3 41.1 41.5 Warmup runs: 41.3 Current Mean: 49.1 ms Stdev: 1.2 ms (2.5%) Runs: 48.7 48.7 48.5 49.0 48.8 48.9 49.3 48.4 48.7 48.3 48.8 48.8 48.6 48.4 48.8 49.2 49.1 48.8 50.6 48.9 48.6 51.1 48.8 48.7 48.4 48.6 49.6 48.6 49.5 48.2 49.0 48.6 49.0 48.7 48.7 48.6 49.1 48.9 50.3 48.9 48.4 48.3 48.4 48.7 48.7 48.7 49.1 50.8 56.4 49.1 Warmup runs: 48.9	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: 10.7 ms Stdev: 0.1 ms (1.1%) Runs: 10.7 11.0 10.7 10.6 10.6 10.7 10.6 10.7 10.9 10.7 Warmup runs: 10.9 Current Mean: 14.5 ms Stdev: 0.7 ms (5.1%) Runs: 14.6 16.2 15.6 14.2 14.2 14.2 14.0 14.1 14.1 14.3 Warmup runs: 15.0	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

There are no entries

Render Count Changes

Show entries

Name	Type	Duration	Count
Web Vite - AsyncComponent (10 runs)	render	41.4 ms → 49.1 ms (+7.7 ms, +18.5%) 🔴	4 → 5 (+1, +25.0%) 🔴
Web Vite - AsyncComponent (50 runs)	render	41.6 ms → 49.1 ms (+7.5 ms, +18.0%) 🔴	4 → 5 (+1, +25.0%) 🔴
Web Vite - TestList (100 items)	render	10.7 ms → 14.5 ms (+3.8 ms, +35.6%) 🔴🔴	1 → 2 (+1, +100.0%) 🔴

Show details

Name	Type	Duration	Count
Web Vite - AsyncComponent (10 runs)	render	Baseline Mean: 41.4 ms Stdev: 0.3 ms (0.7%) Runs: 41.3 41.6 41.1 41.3 41.4 42.0 41.4 41.7 41.0 41.4 Warmup runs: 51.1 Current Mean: 49.1 ms Stdev: 1.2 ms (2.5%) Runs: 48.7 52.5 48.9 48.5 48.5 48.8 49.2 48.2 48.6 49.0 Warmup runs: 65.1	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: 41.6 ms Stdev: 1.3 ms (3.2%) Runs: 41.4 41.3 41.4 41.4 41.2 41.5 40.8 41.5 41.4 41.2 41.5 40.7 42.8 41.4 41.4 41.2 41.0 41.1 42.4 42.6 47.9 41.4 41.4 41.2 41.1 41.1 41.4 47.6 41.3 40.9 41.5 41.6 41.4 41.3 41.9 41.4 41.5 41.2 41.3 40.7 41.2 41.2 41.3 41.0 41.1 41.2 40.9 41.3 41.1 41.5 Warmup runs: 41.3 Current Mean: 49.1 ms Stdev: 1.2 ms (2.5%) Runs: 48.7 48.7 48.5 49.0 48.8 48.9 49.3 48.4 48.7 48.3 48.8 48.8 48.6 48.4 48.8 49.2 49.1 48.8 50.6 48.9 48.6 51.1 48.8 48.7 48.4 48.6 49.6 48.6 49.5 48.2 49.0 48.6 49.0 48.7 48.7 48.6 49.1 48.9 50.3 48.9 48.4 48.3 48.4 48.7 48.7 48.7 49.1 50.8 56.4 49.1 Warmup runs: 48.9	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: 10.7 ms Stdev: 0.1 ms (1.1%) Runs: 10.7 11.0 10.7 10.6 10.6 10.7 10.6 10.7 10.9 10.7 Warmup runs: 10.9 Current Mean: 14.5 ms Stdev: 0.7 ms (5.1%) Runs: 14.6 16.2 15.6 14.2 14.2 14.2 14.0 14.1 14.1 14.3 Warmup runs: 15.0	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 fc93e6a

[Victorvikson1996]

How can Use this

[mdjastrzebski]

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

[Victorvikson1996]

Thank you so much @mdjastrzebski