usage.js

var fs    = require('fs'),
    path  = require('path'),
    nconf = require('./lib/nconf');

//
// Configure the provider with a single store and
// support for command-line arguments and environment
// variables.
//
var single = new nconf.Provider({
  env: true,
  argv: true,
  store: {
    type: 'file',
    file: path.join(__dirname, 'config.json')
  }
});

//
// Configure the provider with multiple hierarchical stores
// representing `user` and `global` configuration values.
//
var multiple = new nconf.Provider({
  stores: [
    { name: 'user', type: 'file', file: path.join(__dirname, 'user-config.json') },
    { name: 'global', type: 'global', file: path.join(__dirname, 'global-config.json') }
  ]
});

//
// Setup nconf to use the 'file' store and set a couple of values;
//
nconf.use('file', { file: path.join(__dirname, 'config.json') });
nconf.set('database:host', '127.0.0.1');
nconf.set('database:port', 5984);

//
// Get the entire database object from nconf
//
var database = nconf.get('database');
console.dir(database);

//
// Save the configuration object to disk
//
nconf.save(function (err) {
  fs.readFile(path.join(__dirname, 'config.json'), function (err, data) {
    console.dir(JSON.parse(data.toString()))
  });
});