How to pass options to envify

[Naman Goel]

There was a problem/bug/design decision in Envify that was causing lots of problems.

The problem was that Envify wouldn't make undefined env variables as undefined, which would then cause errors.

The authors of Envify chose to not change the default bahaviour, but they did add an extra option called purge.

It's explained here: https://github.com/hughsk/envify#purging-processenv

Is there a way I use that option while using envify-loader??