This is a plugin for Babel designed to make it easier to perform

localization in a Django-backed JavaScript codebase.
When working with localization, Django provides a handful of

gettext-compatible functions and a version of the current message

dictionary for the locale, which JavaScript can use to perform

on-the-fly translation of strings. While fantastic to have, it suffers

from a lot of noise, caused by long strings that can't easily be

word-wrapped and wordy interpolate() calls for format strings.
This plugin fixes all this by introducing the following:


Automatic whitespace condensing/trimming (by default -- callers can

  also opt to preserve all whitespace by calling _raw() versions of

  the functions).


Automatic interpolation for template literals that reference variables

  or expressions, avoiding all the interpolate() calls.


Support for either calling gettext functions or using them as a

  tagged template literal.


A _ alias that maps to gettext when used as a tagged template

  literal (but not a function call, to avoid breaking usage of

  underscore.js).


A N_ aliases that maps to ngettext.


These calls/template literals will be transpiled cleanly to code

compatible with the xgettext message scanner, resulting in cleaner

codebases, more readable strings, and fewer errors.

Unit tests passed.
Tested this with Djblets and Review Board, and verified the resulting

output.