👷 run latest firefox and webkit in CI, default local e2e to chromium

[thomas-lebeau]

Motivation

We only ran the latest Chromium in CI e2e, alongside pinned variants of Chromium 120, Firefox 119 and WebKit 17.4 (added in #4612). This left a gap: regressions on the latest Firefox/WebKit versions weren't caught until they shipped. Locally, running all browsers also made the e2e feedback loop slow.

Changes

• .gitlab-ci.yml: add firefox and webkit to the e2e job's BROWSER matrix (in addition to the existing chromium/*-pinned projects). Bump CURRENT_CI_IMAGE to 108.
• Dockerfile: install Playwright's firefox and webkit browsers (with deps) in the CI image so the new matrix entries have what they need.

Test instructions

• CI: confirm the e2e job runs the new firefox and webkit matrix entries successfully on the freshly built image 108.
• Local: yarn test:e2e should now run chromium only. yarn test:e2e --project=firefox still works for opting in to other browsers.

Checklist

• Tested locally
• Tested on staging
• Added unit tests for this change.
• Added e2e/integration tests for this change.
• Updated documentation and/or relevant AGENTS.md file

[chatgpt-codex-connector]

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[cit-pr-commenter-54b7da]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	169.51 KiB	169.51 KiB	0 B	0.00%	✅
Rum Profiler	5.97 KiB	5.97 KiB	0 B	0.00%	✅
Rum Recorder	21.23 KiB	21.23 KiB	0 B	0.00%	✅
Logs	54.70 KiB	54.70 KiB	0 B	0.00%	✅
Rum Slim	127.85 KiB	127.85 KiB	0 B	0.00%	✅
Worker	22.99 KiB	22.99 KiB	0 B	0.00%	✅

🚀 CPU Performance

Action Name	Base CPU Time (ms)	Local CPU Time (ms)	𝚫%
RUM - add global context	0.0017	0.0027	+58.82%
RUM - add action	0.0097	0.0149	+53.61%
RUM - add error	0.0098	0.0133	+35.71%
RUM - add timing	0.0005	0.0007	+40.00%
RUM - start view	0.0093	0.0117	+25.81%
RUM - start/stop session replay recording	0.0008	0.0012	+50.00%
Logs - log message	0.0181	0.0184	+1.66%

🧠 Memory Performance

Action Name	Base Memory Consumption	Local Memory Consumption	𝚫
RUM - add global context	52.78 KiB	38.42 KiB	-14.36 KiB
RUM - add action	69.61 KiB	67.15 KiB	-2.45 KiB
RUM - add timing	43.02 KiB	38.76 KiB	-4.26 KiB
RUM - add error	71.47 KiB	71.49 KiB	+21 B
RUM - start/stop session replay recording	51.15 KiB	45.87 KiB	-5.28 KiB
RUM - start view	492.44 KiB	487.17 KiB	-5.27 KiB
Logs - log message	58.34 KiB	70.08 KiB	+11.74 KiB

🔗 RealWorld

[datadog-prod-us1-6]

✨ Fix all issues with BitsAI or with Cursor

⚠️ Warnings

🧪 8 Tests failed

Session Stores › Cookies › trackSessionAcrossSubdomains: false › stores the cookie on the full host name › async from sessionStore.scenario.ts     (Fix with Cursor)

sessionStore.scenario.ts:50:17 async

[webkit] › sessionStore.scenario.ts:50:17 › Session Stores › Cookies › trackSessionAcrossSubdomains: false › stores the cookie on the full host name › async 

    Error: expect(received).toEqual(expected) // deep equality

    Expected: ObjectContaining {"domain": "foo.bar.localhost"}
    Received: undefined

      54 |           const cookies = await browserContext.cookies()
...

Session Stores › Cookies › trackSessionAcrossSubdomains: false › stores the cookie on the full host name › bundle from sessionStore.scenario.ts     (Fix with Cursor)

sessionStore.scenario.ts:50:17 bundle

[webkit] › sessionStore.scenario.ts:50:17 › Session Stores › Cookies › trackSessionAcrossSubdomains: false › stores the cookie on the full host name › bundle 

    Error: expect(received).toEqual(expected) // deep equality

    Expected: ObjectContaining {"domain": "foo.bar.localhost"}
    Received: undefined

      54 |           const cookies = await browserContext.cookies()
...

Session Stores › Cookies › trackSessionAcrossSubdomains: false › stores the cookie on the full host name › npm from sessionStore.scenario.ts     (Fix with Cursor)

sessionStore.scenario.ts:50:17 npm

[webkit] › sessionStore.scenario.ts:50:17 › Session Stores › Cookies › trackSessionAcrossSubdomains: false › stores the cookie on the full host name › npm 

    Error: expect(received).toEqual(expected) // deep equality

    Expected: ObjectContaining {"domain": "foo.bar.localhost"}
    Received: undefined

      54 |           const cookies = await browserContext.cookies()
...

View all

ℹ️ Info

No other issues found (see more)

❄️ No new flaky tests detected

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 76.96% (+0.00%)

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