feat(plugin-eslint): log initializer and runner steps

[matejchalk]

Part of #888

Adds info and debug logs to the ESLint plugin:

• rules detection
• group creation
• config format detection
• artifact loading
• lint results stats

Also added a utility that prefixes logs from functions executed in code-pushup.config.ts with the plugin title, so users can tell which plugin is producing the log.

Examples (local)

Multiple Nx targets

screen-capture.-.2025-12-10T165552.648.webm

Single target, artifacts

[nx-cloud]

View your CI Pipeline Execution ↗ for commit 89c0468

Command	Status	Duration	Result
nx affected -t int-test --parallel=3	✅ Succeeded	1m 27s	View ↗

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☁️ Nx Cloud last updated this comment at 2025-12-10 17:40:15 UTC

[pkg-pr-new]

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commit: 89c0468

[github-actions]

Code PushUp

🤨 Code PushUp report has both improvements and regressions – compared current commit da08c3a with previous commit 38ad415.

🕵️ See full comparison in Code PushUp portal 🔍

🏷️ Categories

🏷️ Category	⭐ Previous score	⭐ Current score	🔄 Score change
Performance	🟡 73	🔴 39
Documentation	🔴 35	🔴 35
Code coverage	🟡 89	🟡 89
Bug prevention	🟡 67	🟡 67	–
Code style	🟢 100	🟢 100	–
Security	🔴 43	🔴 43	–
Updates	🟡 71	🟡 71	–
Type Safety	🟡 56	🟡 56	–
Miscellaneous	🟡 67	🟡 67	–
Accessibility	🟢 92	🟢 92	–
Best Practices	🟢 100	🟢 100	–
SEO	🟢 92	🟢 92	–

👍 1 group improved, 👎 2 groups regressed, 👍 4 audits improved, 👎 11 audits regressed, 9 audits changed without impacting score

🗃️ Groups

🔌 Plugin	🗃️ Group	⭐ Previous score	⭐ Current score	🔄 Score change
Lighthouse	Performance	🟡 73	🔴 39
JSDoc coverage	Documentation coverage	🔴 35	🔴 35
Code coverage	Code coverage metrics	🟡 89	🟡 89

31 other groups are unchanged.

🛡️ Audits

🔌 Plugin	🛡️ Audit	📏 Previous value	📏 Current value	🔄 Value change
Lighthouse	Initial server response time was short	🟥 Root document took 780 ms	🟩 Root document took 540 ms
Lighthouse	Total Blocking Time	🟨 280 ms	🟥 1,350 ms
Lighthouse	Largest Contentful Paint	🟨 3.7 s	🟥 11.3 s
Lighthouse	Max Potential First Input Delay	🟨 220 ms	🟥 1,100 ms
Lighthouse	Reduce unused JavaScript	🟨 Potential savings of 187 KiB	🟥 Potential savings of 187 KiB
Lighthouse	Remove duplicate modules in JavaScript bundles	🟨 Potential savings of 106 KiB	🟥 Potential savings of 106 KiB
Lighthouse	Speed Index	🟨 5.6 s	🟥 6.1 s
Lighthouse	Time to Interactive	🟥 11.5 s	🟥 12.5 s
Lighthouse	First Contentful Paint	🟥 3.1 s	🟥 3.1 s
Code coverage	Line coverage	🟨 84.7 %	🟨 84.8 %
Code coverage	Branch coverage	🟨 87.2 %	🟨 87.1 %
JSDoc coverage	Functions coverage	🟥 556 undocumented functions	🟥 559 undocumented functions
JSDoc coverage	Types coverage	🟥 243 undocumented types	🟥 244 undocumented types
Code coverage	Function coverage	🟩 90.4 %	🟩 90.5 %
JSDoc coverage	Variables coverage	🟥 251 undocumented variables	🟥 253 undocumented variables
Lighthouse	Avoids enormous network payloads	🟩 Total size was 2,039 KiB	🟩 Total size was 2,048 KiB
Lighthouse	Minimizes main-thread work	🟥 3.8 s	🟥 9.4 s
Lighthouse	JavaScript execution time	🟥 1.3 s	🟥 3.7 s
Lighthouse	Metrics	🟩 100%	🟩 100%
Lighthouse	Server Backend Latencies	🟩 400 ms	🟩 1,390 ms
Lighthouse	Uses efficient cache policy on static assets	🟨 30 resources found	🟨 30 resources found
Lighthouse	Reduce unused CSS	🟥 Potential savings of 94 KiB	🟥 Potential savings of 94 KiB
Lighthouse	Network Round Trip Times	🟩 100 ms	🟩 20 ms
TypeScript	Semantic errors	🟥 2626 errors	🟥 2636 errors

654 other audits are unchanged.

[github-actions]

Code PushUp

🤨 Code PushUp report has both improvements and regressions – compared current commit da08c3a with previous commit 38ad415.

💼 Project plugin-eslint

🤨 Code PushUp report has both improvements and regressions.

🕵️ See full comparison in Code PushUp portal 🔍

🏷️ Category	⭐ Previous score	⭐ Current score	🔄 Score change
Documentation	🟡 66	🟡 66
Code coverage	🟢 94	🟢 94

4 other categories are unchanged.

👍 1 group improved, 👎 1 group regressed, 👍 2 audits improved, 👎 3 audits regressed, 1 audit changed without impacting score

🗃️ Groups

🔌 Plugin	🗃️ Group	⭐ Previous score	⭐ Current score	🔄 Score change
JSDoc coverage	Documentation coverage	🟡 66	🟡 66
Code coverage	Code coverage metrics	🟢 94	🟢 94

13 other groups are unchanged.

🛡️ Audits

🔌 Plugin	🛡️ Audit	📏 Previous value	📏 Current value	🔄 Value change
JSDoc coverage	Variables coverage	🟥 13 undocumented variables	🟥 15 undocumented variables
Code coverage	Line coverage	🟩 91.8 %	🟩 92.5 %
JSDoc coverage	Functions coverage	🟥 46 undocumented functions	🟥 48 undocumented functions
Code coverage	Branch coverage	🟨 85 %	🟨 84.7 %
Code coverage	Function coverage	🟩 98.2 %	🟩 98.2 %
JSDoc coverage	Types coverage	🟥 14 undocumented types	🟥 15 undocumented types

437 other audits are unchanged.

💼 Project utils

🤨 Code PushUp report has both improvements and regressions.

🕵️ See full comparison in Code PushUp portal 🔍

🏷️ Category	⭐ Previous score	⭐ Current score	🔄 Score change
Code coverage	🟢 95	🟢 95
Documentation	🔴 38	🔴 38

4 other categories are unchanged.

👍 1 group improved, 👎 1 group regressed, 👍 3 audits improved, 👎 1 audit regressed

🗃️ Groups

🔌 Plugin	🗃️ Group	⭐ Previous score	⭐ Current score	🔄 Score change
Code coverage	Code coverage metrics	🟢 95	🟢 95
JSDoc coverage	Documentation coverage	🔴 38	🔴 38

13 other groups are unchanged.

🛡️ Audits

🔌 Plugin	🛡️ Audit	📏 Previous value	📏 Current value	🔄 Value change
JSDoc coverage	Functions coverage	🟥 232 undocumented functions	🟥 233 undocumented functions
Code coverage	Branch coverage	🟩 91.9 %	🟩 92 %
Code coverage	Function coverage	🟩 95.5 %	🟩 95.5 %
Code coverage	Line coverage	🟩 96.9 %	🟩 96.9 %

439 other audits are unchanged.

---

12 other projects are unchanged.

[BioPhoton]

Nice logger cleanup once again! I added a suggestion to fix type checks

[BioPhoton]

We could move code out of index.ts files to be able to exclude all index files from coverage. This applies to all index.ts files changed in this PR.

This is out of scope but up to you to include it here already.

[BioPhoton]

Looks good!