Fail if env is not correct

[zRelux]

I think it would be a neat feature to the have the babel fail the .env does not match a js object. the idea would be to replicate this package https://www.npmjs.com/package/envalid.

Any suggestions?

[goatandsheep]

I like this idea a lot, but does it need to be built into react-native-dotenv? Like are you able to create a test script that validates your .env files and run a command in your app that validates? If so, I can add it as a suggestion of best practices, but probably better to keep it out of this library. Otherwise, if you have some time, feel free to open a ticket + PR!

[goatandsheep]

Also, have you looked into alternatives? Personally I found dotenv-extended easier to wrap my head around because it uses .schema files

[goatandsheep]

I think we can add a fail to the verbose option