[feat] extract locale phrases AOT

[Zetanova]

[feat] extract locale phrases AOT

[titanism]

This is out of scope for this project and is related to #445. See our comment there with reference.

If you want to extract phrases, then have a build script or test that will compile and test all emails (providing fake/virtual locals to pass to the templates). Doing this will cause the i18n locale files to be updated/created/synced. Afterwards, you can run mandarin.translate() as in our example (see #445 comment).

[Zetanova]

I already did it before writing the feature request.

The problem is simply the test count can get very high,
child-nodejs workers would be needed to execute only a view complex templates
in reasonable time.

The best workaround to the problem that I come up with
is to simply specify dummy variables with all possible phrases in the template itself.

One other option that I found is to extract the phrases by regex matching,
it is how it mostly done with all other i18n libs and set this phrases as static phrases into the i18n config instance.
But I didn't investigate further

[titanism]

Specifying dummy variables is the way to go - it will not only test your template, but also let you get the i18n locales synced. I do not think regex matching is the best approach.