Enable usage of envalid in react-native apps

[barbogast]

PR for #30

With this change I can use envalid in a react-native app if I set dotEnvPath: null and use a custom reporter.

[SimenB]

I think this should be merged. The workaround for fs and dotenv is ugly, but nothing more than that. And if merging this lets @Koblaid avoid forking, I think that's a good thing 😄
We use a custom reporter now anyways (need it to be json to be readable at all in production), so this will in theory boost our startup time as well 😀

[SimenB]

Update the readme with RN instructions?

[barbogast]

Right, that was missing.

[af]

This looks good to me too– I think I had misinterpreted the latest comments on the issue's discussion. The require workarounds are ugly of course but with the comments it's clear what's going on. Thanks for the PR @Koblaid !

[barbogast]

Great, thanks!

[SimenB]

Should be published, right?

[barbogast]

I'm not sure. I just tried to publish my app and when building it with the release configuration I got again errors. Seems like the package loading differs from development builds to release builds. And right now it looks like the preventing the packager from seeing the packages by obfuscating the require calls doesn't work for release builds. :-(

[SimenB]

Your changes in this PR has not been published

[barbogast]

To verify I just installed envalid from github. When I try to build the app I get the Unable to resolve module fs from ... error.

[barbogast]

Right now I cannot think of a way to get it to work. Looks like it'd be the best if we would revert the commit.

I could then fork envalid and replace the dependencies to get it to work.

[af]

@Koblaid I just published v3.1, which does includes your RN changes. Could you give that a try?

[barbogast]

@af I just checked v3.1, the error remains the same.

[SimenB]

What's the error?

[barbogast]

This seems to work:

const x = require
const fs = x('f' + 's')
const dotenv = x('doten' + 'v')

Great, I didn't think that there was a solution. If it's alright with you I would verify that it's really working and prepare a PR.