1978875 - DevTools Release Tasks - Cycle 143

Status: RESOLVED FIXED

(DevTools :: General, task, P2)

Description

[Alexandra Borovova [:Sasha]]

Soft Freeze / Merge Date: 2025-08-14 / 2025-08-18 (from the Release train page)
More details about any of those tasks can be found at: https://firefox-source-docs.mozilla.org/devtools/release.html

Anytime during the release:

• [x] outdated backward compatibility code removed (doc, searchfox)
  • Bug 1981194
• [x] outdated telemetry probes removed (bz query)
  • no probes
• [x] in devtools-qa bugs, needinfo the triage owner (or the assignee if they are a team member) to test the bug in beta channel (bz query)
  • no bugs

Close to the end of the release (eg 1 week before code freeze)

• [x] Update MDN data for the Compatibility panel follow devtools/shared/compatibility/README.md
  • Bug 1981807
• [x] Check the browser information in the Compatibility Panel is up to date (example: version number for Firefox Nightly should be 143):
  • Steps: Open the Inspector, then select the Compatibility side panel, and click on Settings to see the list of all browsers
• [x] smoke test for remote debugging against version 142 (doc)
• [x] smoke test for remote debugging against the same version (version 143) (same doc)
• [x] check xpcshell debugging (doc)

Marionette and BiDi:

• [x] close to the end of release (~1 week), based on the list of bugs fixed during the release, update Marionette release notes on MDN for 142: https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/142#webdriver_conformance_marionette.~~
• [x] right after the release of Firefox 142, send a mail to the dev-webdriver mailing list.

For reference: full list of Marionette and BiDi bugs fixed during the release.

Template suggestion for the Marionette email (adjust wording if relevant):

Firefox 142 has just been released, containing updates for our WebDriver (BiDi, Marionette) support.

You can find all the details in the change log for web developers:

https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Releases/142#webdriver_conformance_webdriver_bidi_marionette

See https://docs.google.com/document/d/1t8pR_lcTkjZjX1ddOf6tyvPY8dtE519Vlu8wXX58x_E for detailed explanations about Marionette tasks, or contact :whimboo / :jdescottes for help

Nice to have:

• [ ] Generate webidl-pure-allowlist.js and webidl-deprecated-list.js (doc)