arojunior / awesome-feed

const fs = require('fs');

const path = require('path');

const paths = require('./paths');

// Make sure that including paths.js after env.js will read .env variables.

delete require.cache[require.resolve('./paths')];

const NODE_ENV = process.env.NODE_ENV;

if (!NODE_ENV) {

  throw new Error(

    'The NODE_ENV environment variable is required but was not specified.'

  );

}

// https://github.com/bkeepers/dotenv#what-other-env-files-can-i-use

var dotenvFiles = [

  `${paths.dotenv}.${NODE_ENV}.local`,

  `${paths.dotenv}.${NODE_ENV}`,

  // Don't include `.env.local` for `test` environment

  // since normally you expect tests to produce the same

  // results for everyone

  NODE_ENV !== 'test' && `${paths.dotenv}.local`,

  paths.dotenv,

].filter(Boolean);

// Load environment variables from .env* files. Suppress warnings using silent

// if this file is missing. dotenv will never modify any environment variables

// that have already been set.

// https://github.com/motdotla/dotenv

dotenvFiles.forEach(dotenvFile => {

  if (fs.existsSync(dotenvFile)) {

    require('dotenv').config({

      path: dotenvFile,

    });

  }

});

// We support resolving modules according to `NODE_PATH`.

// This lets you use absolute paths in imports inside large monorepos:

// https://github.com/facebookincubator/create-react-app/issues/253.

// It works similar to `NODE_PATH` in Node itself:

// https://nodejs.org/api/modules.html#modules_loading_from_the_global_folders

// Note that unlike in Node, only *relative* paths from `NODE_PATH` are honored.

// Otherwise, we risk importing Node.js core modules into an app instead of Webpack shims.

// https://github.com/facebookincubator/create-react-app/issues/1023#issuecomment-265344421

// We also resolve them to make sure all tools using them work consistently.

const appDirectory = fs.realpathSync(process.cwd());

process.env.NODE_PATH = (process.env.NODE_PATH || '')

  .split(path.delimiter)

  .filter(folder => folder && !path.isAbsolute(folder))

  .map(folder => path.resolve(appDirectory, folder))

  .join(path.delimiter);

// Grab NODE_ENV and REACT_APP_* environment variables and prepare them to be

// injected into the application via DefinePlugin in Webpack configuration.

const REACT_APP = /^REACT_APP_/i;

module.exports = getClientEnvironment;