nodejs config module optimist or nconf?

I use a config.js file like this:

var config = {}
config.web = {};
config.debug = {};

config.server_name =  'MyServerName';
config.web.port = process.env.WEB_PORT || 32768;

config.debug.verbositylevel = 3;

module.exports = config;

then i can just call config variables like this:

var port = config.web.port;

I find it much easier to maintain like this. Hope that helps you.

I use dotenv. It's as easy as:

var dotenv = require('dotenv');
dotenv.load();

Then you just create a .env file with your configuration settings.

S3_BUCKET=YOURS3BUCKET
SECRET_KEY=YOURSECRETKEYGOESHERE

Disclaimer: I'm the creator, and didn't find the config.json file approach useful in production environments. I prefer getting configuration from my environment variables.