feat: Capture Page Resource Assets

[metal-messiah]

Add detection for page resource assets which captures data as a BrowserPerformance event. This feature is being shipped in an experimental state and is off by default. To opt in to using this feature, it can be turned on by setting the config value init.performance.resources.enabled = true in Copy/Paste or NPM installations.

Overview

See this CDD for the base behavior of this feature.

Related Issue(s)

https://new-relic.atlassian.net/browse/NR-330514

Testing

New unit and e2e tests have been added to validate the behavior.

[github-actions]

Asset Size Report

Merging this pull request will result in the following asset size changes:

Agent	Asset	Previous Size	New Size	Diff
lite	loader	29.31 kB / 10.64 kB (gzip)	29.39 kB / 10.68 kB (gzip)	0.27% / 0.38% (gzip)
lite	async-chunk	54.3 kB / 17.59 kB (gzip)	53.39 kB / 17.35 kB (gzip)	-1.68% / -1.36% (gzip)
pro	loader	50.42 kB / 17.43 kB (gzip)	50.83 kB / 17.54 kB (gzip)	0.82% / 0.61% (gzip)
pro	async-chunk	100.5 kB / 30.62 kB (gzip)	101.43 kB / 30.9 kB (gzip)	0.92% / 0.88% (gzip)
spa	loader	57.99 kB / 19.74 kB (gzip)	58.41 kB / 19.86 kB (gzip)	0.71% / 0.58% (gzip)
spa	async-chunk	115.22 kB / 34.91 kB (gzip)	116.15 kB / 35.18 kB (gzip)	0.81% / 0.77% (gzip)

[codecov]

Codecov Report

Attention: Patch coverage is 76.36364% with 13 lines in your changes missing coverage. Please review.

Project coverage is 89.03%. Comparing base (e00a469) to head (f211fd5).
Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
src/features/generic_events/aggregate/index.js	75.67%	5 Missing and 4 partials ⚠️
src/features/generic_events/instrument/index.js	83.33%	2 Missing ⚠️
src/features/jserrors/aggregate/index.js	50.00%	1 Missing ⚠️
src/features/jserrors/instrument/index.js	50.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1257      +/-   ##
==========================================
- Coverage   89.25%   89.03%   -0.23%     
==========================================
  Files         170      170              
  Lines        7326     7396      +70     
  Branches     1476     1493      +17     
==========================================
+ Hits         6539     6585      +46     
- Misses        667      690      +23     
- Partials      120      121       +1     

Flag	Coverage Δ
integration-tests	91.60% <100.00%> (-0.33%)	⬇️
unit-tests	79.60% <45.45%> (-0.25%)	⬇️

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[github-actions]

Last ran on December 09, 2024 12:46:57 CST
Checking merge of (f211fd5) into main (e00a469)