@rapido/scripts/config/env.js

A library of scripts useed to develop Rapido apps.

// @remove-on-eject-begin
/**
 * Copyright (c) 2019-present Verum Technologies
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
// @remove-on-eject-end
'use strict';

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
const 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.  Variable expansion is supported in .env files.
// https://github.com/motdotla/dotenv
// https://github.com/motdotla/dotenv-expand
dotenvFiles.forEach(dotenvFile => {
  if (fs.existsSync(dotenvFile)) {
    require('dotenv-expand')(
      require('dotenv').config({
        path: dotenvFile,
      })
    );
  }
});

// We support resolving modules according to `NODE_PATH`.
// This lets you use absolute paths in imports inside large monorepos
// 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.
// 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 RAPIDO_* environment variables and prepare them to be
// injected into the application via DefinePlugin in Webpack configuration.
const RAPIDO = /^RAPIDO_/i;

const raw = Object.keys(process.env)
  .filter(key => RAPIDO.test(key))
  .reduce(
    (env, key) => {
      env[key] = process.env[key];
      return env;
    },
    {
      // Useful for determining whether we’re running in production mode.
      // Most importantly, it switches React into the correct mode.
      NODE_ENV: process.env.NODE_ENV || 'development',
    }
  );

// Initialize @rapido/env if enabled
const rapidoEnvPath = path.resolve(paths.appNodeModules, '@rapido/env');
if (fs.existsSync(rapidoEnvPath)) {
  const initEnv = require(`${rapidoEnvPath}/init`);
  initEnv(raw);
}