envv

Simple util for config files that checks and returns an env var.

Installation

$ npm install envv

Usage

// config.js
const envv = require('envv');

module.exports = {
  listenAddr: envv('ADDR', '127.0.0.1'),  // (1)
  listenPort: envv('PORT')                // (2)
};

1. listenAddr will be process.env.ADDR or 127.0.0.1
2. if process.env.PORT is not given, Error: env var 'PORT' is missing will be thrown