Does next-translate provide a tool to find missing keys?

[l-you]

Is there a tool that validates that key for each language is present ?
For example, runtime warning logs may not be produced because translation is used in modal dialog.
And missing translation cannot be without some kind of unit testing.
Command-line tool would prevent such kind of bugs.

I have seen how missing keys extractor implemented in lingui , it would be amazing to have something similar in next-translate.

[l-you]

#1058