This repository contains the source locale messages for Firefox. They are extracted from the active branches (Nightly, Beta, Release, ESRs) by a scheduled GitHub action, which produces pull requests that are reviewed by the L10n team before merging.
From here, messages are exposed to translators in Pontoon.
Note that unless otherwise specified, files in this repository have been processed from their Source Code Form, and therefore following our license (MPL-2.0) do not necessarily carry a Source Code Form License Notice. The Source Code Form for each such file is available from mozilla/gecko-dev.