Package to load, merge and access environment-specific configuration files.

Example how to load the configuration for an environment defined in an environment variable:

const path = require('path')
const Conf = require('@livingdocs/conf')

const appConf = Conf.loadEnvironment(path.resolve('./conf'), process.env.ENVIRONMENT)

This modules assumes a specific folder structure. Following is an example:

yourConfigFolder/
  environments/
    all.js
    local.js
    staging.js
    production.js
  secrets/
    local.js

To load a e.g the 'local' environment use loadEnvironment(path.resolve('./yourConfigFolder'), 'local').

This will go through the following steps:

1. load environments/all.js
2. merge environments/local.js
3. merge secrets/local.js
4. merge environment variables

The environment names local, staging, production are not defined. You can use whatever you want there.

#### Environment variables

Example all.js:

db: {
  database: 'foo'
}

You can override the database property as follows:

exports db__database=bar

Double underscores (__) denote a child property.

The loadEnvironment method is the main entry point to init a configuration.

const appConf = Conf.loadEnvironment(file, environment)

Get a config value. Note: this will throw an error if the config is not present.

appConf.get('db:database')

To safely query for a config value provide a default value as the second param.

appConf.get('db:database', null)

You can also set config values programmatically:

appConf.set('db:database', 'bar')

You can manually merge whole objects to set configs in bulk:

appConf.merge(obj)

Outputs the whole configuration as json string:

appConf.toString(obj)

Copyright (c) 2015 Livingdocs AG, all rights reserved

It is not permitted to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of this Software, except when explicitly stated otherwise by Livingdocs AG.