feat: Add SR to pro and spa builds (only runs for LP customers)

[metal-messiah]

Add the SR feature to Pro and Pro+Spa builds of the agent. The session replay library shipping with this version of the browser agent is in limited preview and is not turned on by default. To use the feature, users will need to be part of the limited preview customer group and configure their browser application settings in the UI.

Overview

This PR exposes the SR feature to the pro and spa builds of the agent.

Related Issue(s)

https://issues.newrelic.com/browse/NR-156695

Testing

Tests should be unaffected

[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	28.25 kB / 9.8 kB (gzip)	28.25 kB / 9.8 kB (gzip)	0% / 0% (gzip)
lite	async-chunk	45.4 kB / 15.03 kB (gzip)	45.4 kB / 15.03 kB (gzip)	0% / 0% (gzip)
pro	loader	45.35 kB / 15.2 kB (gzip)	45.53 kB / 15.23 kB (gzip)	0.4% / 0.14% (gzip)
pro	async-chunk	64.45 kB / 20.82 kB (gzip)	64.45 kB / 20.82 kB (gzip)	0% / 0% (gzip)
spa	loader	51.76 kB / 17.16 kB (gzip)	51.94 kB / 17.18 kB (gzip)	0.35% / 0.13% (gzip)
spa	async-chunk	78.67 kB / 25.04 kB (gzip)	78.67 kB / 25.04 kB (gzip)	0% / 0% (gzip)
lite-polyfills	loader	98.71 kB / 31.43 kB (gzip)	98.71 kB / 31.43 kB (gzip)	0% / 0% (gzip)
lite-polyfills	async-chunk	57.86 kB / 17.24 kB (gzip)	57.86 kB / 17.24 kB (gzip)	0% / 0% (gzip)
pro-polyfills	loader	118.3 kB / 37.37 kB (gzip)	118.69 kB / 37.41 kB (gzip)	0.33% / 0.12% (gzip)
pro-polyfills	async-chunk	98.82 kB / 26.62 kB (gzip)	98.82 kB / 26.62 kB (gzip)	0% / 0% (gzip)
spa-polyfills	loader	126.27 kB / 39.5 kB (gzip)	126.67 kB / 39.55 kB (gzip)	0.31% / 0.11% (gzip)
spa-polyfills	async-chunk	113.7 kB / 31.03 kB (gzip)	113.7 kB / 31.03 kB (gzip)	0% / 0% (gzip)
worker	loader	40.36 kB / 13.66 kB (gzip)	40.36 kB / 13.66 kB (gzip)	0% / 0% (gzip)
worker	async-chunk	45.36 kB / 15.37 kB (gzip)	45.36 kB / 15.37 kB (gzip)	0% / 0% (gzip)

[codecov]

Codecov Report

Merging #677 (680ddcb) into main (71d47d6) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #677   +/-   ##
=======================================
  Coverage   86.15%   86.15%           
=======================================
  Files         138      138           
  Lines        5237     5237           
  Branches      719      719           
=======================================
  Hits         4512     4512           
  Misses        660      660           
  Partials       65       65           

Flag	Coverage Δ
unit-tests	79.20% <ø> (ø)

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Files Changed	Coverage Δ
src/cdn/pro.js	100.00% <ø> (ø)
src/cdn/spa.js	100.00% <ø> (ø)

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[patrickhousley]

Just a couple of QQ. Should we add the two additional bundles created for SR to the PR size check output? Should we add additional details to our library size doc page regarding the two additional bundles required for SR?

[metal-messiah]

Just a couple of QQ. Should we add the two additional bundles created for SR to the PR size check output? Should we add additional details to our library size doc page regarding the two additional bundles required for SR?

yes, and yes. And also a disclaimer on the doc page that those SR async bundles are only ever loaded after all the mechanisms for sampling and entitlements are ran