ConfigLoader

Load YAML configs based on current node environment.

Usage

Let's say you have this kind of config setup:

config/
  config.yml              // Shared configuration
  config.dev.yml          // Extended dev configuration
  config.production.yml   // Extended production configuration

Then ConfigLoader can help you load these based on current environment. Let's say you are running node in a development environment by setting NODE_ENV:

$ NODE_ENV=dev node yourapp.js

ConfigLoader would then load up config.yml and extend it with config.dev.yml.

Your config.yml might look like this:

site:
  title: My Awesome Site
 
http:
  port: 80
 
database:
  user:
  pass:

And your config.dev.yml might look like this:

http:
  port: 1337
 
database:
  user: root
  pass: IAMMEGAHAxx00r

The loaded configuration would then be:

{ site: { title: "My Awesome Site" },
  http: { port: 1337 },
  database: { user: 'root', pass: 'IAMMEGAHAxx00r' }
}

API

ConfigLoader is one single function that behaves a bit differently depending on what arguments you give it.

Loading configurations synchronously

If you do not give ConfigLoader a callback function it will do the loading synchronously.

var configloader = require('configloader');
var config = configloader('path/to/configs');

If path/to/configs does not contain any files matching the requirements an error will be thrown if loading is done synchronously.

Loading configurations asynchronously

If you do give ConfigLoader a callback function it will return the loaded configuration to that function.

var configloader = require('condigloader');
configloader('path/to/configs', function (err, config) {
  if (err) {
    console.log('had an error :(');
    return;
  }
 
  console.log(config);
});

If any of the configuration files contains YAML errors the err argument will be the error from js-yaml.

If no configurations files were found in path/to/configs I think you will get undefined as the second argument. :P

Forcing environment

If you want to force a certain environent to be used you can pass

{ env: 'other-env' }

as a second argument to configloader().

Conventions

By convention ConfigLoader requires you to name your configuration files using this pattern: config(\.environment)?\.yml

If you'd like to change this pull requests making more use of the options argument are very much welcome!

If ConfigLoader can't find any configured environment it will fall back on dev.

Installation

Install with npm: $ npm install configloader

Testing

Tests are written using mocha.

License

ISC