👷 Update react monorepo to v19 (major)

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
@types/react (source)	18.3.18 -> 19.0.3
@types/react-dom (source)	18.3.5 -> 19.0.2
react (source)	18 -> 18 || 19
react (source)	18.3.1 -> 19.0.0
react-dom (source)	18.3.1 -> 19.0.0

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Release Notes

facebook/react (react)

v19.0.0

Compare Source

facebook/react (react-dom)

v19.0.0

Compare Source

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Configuration

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[cit-pr-commenter]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	161.72 KiB	161.72 KiB	0 B	0.00%	✅
Logs	56.17 KiB	56.17 KiB	0 B	0.00%	✅
Rum Slim	111.77 KiB	111.77 KiB	0 B	0.00%	✅
Worker	24.54 KiB	24.54 KiB	0 B	0.00%	✅

🚀 CPU Performance

Action Name	Base Average Cpu Time (ms)	Local Average Cpu Time (ms)	𝚫
addglobalcontext	0.002	0.002	-0.001
addaction	0.043	0.038	-0.005
addtiming	0.001	0.001	-0.000
adderror	0.052	0.040	-0.012
startstopsessionreplayrecording	1.602	1.256	-0.346
startview	0.493	0.375	-0.118
logmessage	0.038	0.023	-0.016

🧠 Memory Performance

Action Name	Base Consumption Memory (bytes)	Local Consumption Memory (bytes)	𝚫 (bytes)
addglobalcontext	10.89 KiB	8.09 KiB	-2862 B
addaction	42.11 KiB	39.11 KiB	-3071 B
addtiming	7.02 KiB	7.19 KiB	173 B
adderror	45.65 KiB	45.00 KiB	-661 B
startstopsessionreplayrecording	5.89 KiB	5.36 KiB	-543 B
startview	421.68 KiB	423.99 KiB	2.31 KiB
logmessage	41.51 KiB	41.07 KiB	-447 B

🔗 RealWorld

[renovate]

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[amortemousque]

❓ question: ‏Can you explain why 18 || 19? My guess is not break customer integrations using v18? Does it means we have to do it for every new major version of React?

[BenoitZugmeyer]

(discussed IRL, but for the record:)

• Renovate did this change automatically
• It indicates that the react plugin supports both react 18 and 19. It probably support anterior versions but I didn't test it.
• We'll need to add a new version for every major version of react, which should not be a big deal.
• It will also allow us to drop support for old react versions when it proves to be unmaintainable.
• Ideally we should run the unit tests for each version of react, or at least the oldest we support, to make sure we don't inadvertently break old versions support... but it would be a challenge to implement with our current unit test setup, so let's keep it in mind when we drop karma.