breakage reporting messaging for extensions

[jdorweiler]

Asana Task/Github Issue:

Description

• Add shared messaging transport singleton so features can receive subscription messages from the extension background
• Route messageType messages to the transport in extension-mv3.js entry-point
• Enable breakageReporting and webInterferenceDetection features for Firefox
• Fix getFeatureSetting usage

Testing Steps

Checklist

Please tick all that apply:

• I have tested this change locally
• I have tested this change locally in all supported browsers
• This change will be visible to users
• I have added automated tests that cover this change
• I have ensured the change is gated by config
• This change was covered by a ship review
• This change was covered by a tech design
• Any dependent config has been merged

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Note

Add shared messaging transport and route extension subscription responses; enable webInterferenceDetection/breakageReporting on Firefox; fix detector settings lookup in breakage reporting.

• Messaging:
  • Introduce a shared singleton SendMessageMessagingTransport with getSharedMessagingTransport() and use it in extensionConstructMessagingConfig().
• Entry point (injected/entry-points/extension-mv3.js):
  • Route messages with messageType to the shared transport via onResponse so subscriptions receive background responses.
• Features enablement (injected/src/features.js):
  • Enable webInterferenceDetection and breakageReporting for firefox.
• Breakage reporting (injected/src/features/breakage-reporting.js):
  • Fetch detector settings via getFeatureSetting('interferenceTypes', 'webInterferenceDetection') and run detectors when present.

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[github-actions]

Temporary Branch Update

The temporary branch has been updated with the latest changes. Below are the details:

• Branch Name: pr-releases/pr-2072
• Commit Hash: a0b7b432d02b3ada8b7ebe5ac818e05c6726d7f5
• Last Updated: December 5, 2025 at 4:22:56 PM UTC
• Install Command: npm i github:duckduckgo/content-scope-scripts#a0b7b432d02b3ada8b7ebe5ac818e05c6726d7f5

Please use the above install command to update to the latest version.

[github-actions]

[Beta] Generated file diff

Time updated: Fri, 05 Dec 2025 16:23:16 GMT

Android

    - android/adsjsContentScope.js

• android/autofillImport.js
• android/brokerProtection.js
• android/contentScope.js

File has changed

Apple

    - apple/contentScope.js

• apple/contentScopeIsolated.js

File has changed

Chrome-mv3

    - chrome-mv3/inject.js

File has changed

Firefox

    - firefox/inject.js

File has changed

Integration

    - integration/contentScope.js

File has changed

Windows

    - windows/contentScope.js

File has changed