`boxArrays` had some optional chaining that was either not needed,
and/or was used in an inappropriate context, for example within the
iterable argument to a `for` statement, which would have caused an "not
iterable" error if it ever actually resolved to `undefined`.
This should have no material impact on the code, but helps to clarify
code readability.
Test-bot: skip
Keyman makes it possible for you to type in any language
on Windows, macOS, Linux, iPhone, iPad, Android tablets and phones, and even
instantly in your web browser. Create keyboard layouts with Keyman Developer and
share them with the community in the keyboards
repository. The Keyman
Community have so far contributed
well over 1,000 keyboard layouts for over 2,500 languages!
License
Copyright (c) SIL Global.
Keyman is an open source project distributed under the MIT license.
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