♻️ refactor build-test-apps script with CLI arg support

[thomas-lebeau]

Motivation

The build-test-apps script was building all test apps unconditionally, making it slow when only a subset is needed (e.g., during development or targeted E2E testing). This refactor adds CLI argument support so specific apps can be built on demand.

Changes

• Added --app / -a CLI flag (repeatable) to select which apps to build; defaults to all apps if omitted
• Added --help / -h flag listing all available app names
• Consolidated app configuration into a single APPS array, replacing separate hardcoded build calls
• Refactored buildExtensions() into a per-extension buildExtension() builder function aligned with the new config-driven approach
• buildApp() now derives the path from the app name internally

Test instructions

# Build all apps (existing behavior)
yarn build:apps

# Build only a specific app
yarn build:apps --app vanilla

# Build multiple specific apps
yarn build:apps --app vanilla --app nextjs

# Show help
yarn build:apps --help

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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[chatgpt-codex-connector]

Build base extension before generating derived extensions

When --app is used to build only cdn-extension or appendChild-extension, this function now just copies test/apps/base-extension without ensuring that base-extension was built in the same run. Because generated extension apps are not checked in and the dist/*.js artifacts come from the base build, targeted runs can produce extensions with missing or stale bundles, breaking browser-extension E2E scenarios. Add an explicit dependency build (or enforce selecting base-extension together) before the copy step.

Useful? React with 👍 / 👎.

[datadog-datadog-prod-us1-2]

✅ Tests

🎉 All green!

❄️ No new flaky tests detected
🧪 All tests passed

🎯 Code Coverage (details)
• Patch Coverage: 100.00%
• Overall Coverage: 77.30% (+0.00%)

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: 068c614 | Docs | Datadog PR Page | Was this helpful? React with 👍/👎 or give us feedback!}

[cit-pr-commenter-54b7da]

Bundles Sizes Evolution

📦 Bundle Name	Base Size	Local Size	𝚫	𝚫%	Status
Rum	175.02 KiB	175.02 KiB	0 B	0.00%	✅
Rum Profiler	6.16 KiB	6.16 KiB	0 B	0.00%	✅
Rum Recorder	27.46 KiB	27.46 KiB	0 B	0.00%	✅
Logs	56.80 KiB	56.80 KiB	0 B	0.00%	✅
Rum Slim	130.66 KiB	130.66 KiB	0 B	0.00%	✅
Worker	23.63 KiB	23.63 KiB	0 B	0.00%	✅

🚀 CPU Performance

Action Name	Base CPU Time (ms)	Local CPU Time (ms)	𝚫%
RUM - add global context	0.006	0.005	-16.67%
RUM - add action	0.0186	0.013	-30.11%
RUM - add error	0.0195	0.0139	-28.72%
RUM - add timing	0.0036	0.0032	-11.11%
RUM - start view	0.029	0.0141	-51.38%
RUM - start/stop session replay recording	0.0018	0.0008	-55.56%
Logs - log message	0.0199	0.0193	-3.02%

🧠 Memory Performance

Action Name	Base Memory Consumption	Local Memory Consumption	𝚫
RUM - add global context	26.56 KiB	25.69 KiB	-889 B
RUM - add action	51.61 KiB	50.99 KiB	-631 B
RUM - add timing	27.91 KiB	26.93 KiB	-1007 B
RUM - add error	55.17 KiB	55.67 KiB	+516 B
RUM - start/stop session replay recording	26.15 KiB	25.35 KiB	-820 B
RUM - start view	466.22 KiB	465.78 KiB	-453 B
Logs - log message	45.51 KiB	43.80 KiB	-1.71 KiB

🔗 RealWorld