JConf - Simple node.js config engine

Overview

It is really simple configuration module. Das't require any options for run.
Just put some config files to your project root and you are ready!

Examples

This examples shows how to use jconf in 10 seconds.

For example, you have a default config like:

{
  "server": {
    "host": "localhost",
    "port": 3000
  },
  "database": {
    "host": "rds.server.com",
    "port": 3306,
    "user": "someUser",
    "password": "somePassword"
  }
}

This is config you use in one or more servers, but you want keep it in your repository for simple deploy.
But, what about your local machine or other developers?

Create file "config.js" or "config.json" in your project dir and just use:

const config = require('jconf');

console.log(config); 
/*
{
  "server": {
    "host": "localhost",
    "port": 3000
  },
  "database": {
    "host": "rds.server.com",
    "port": 3306,
    "user": "someUser",
    "password": "somePassword"
  }
}
*/

Now, just create new file, called "config.local.js" or "config.local.json" with content:

{
  "server": {
    "port": 8000
  },
  "database": {
    "host": "localhost",
    "user": "root",
    "password": ""
  }
}

Run previous example and you get merged config like:

{
  "server": {
      "host": "localhost",
      "port": 8000
    },
    "database": {
      "host": "localhost",
      "port": 3306,
      "user": "root",
      "password": ""
    }
}

Now add "config.local.json" to your .gitignore file and that allows you always keep actual config in repo and use different options in local machine.

Pretty simple? :)

What a minute! What about different environments?

Just create additional config files like:

• config.production.json
• config.development.json
• config.etc.json

And run your script with NODE_ENV param:

NODE_ENV=produnction node app.js
# jconf load config.js and after that
# merge with config.production.json

NODE_ENV=development node app.js
# jconf load config.js and after that
# merge with config.development.json

Still is simple? ;)

Advanced

jconf load and merge configs in next order:

• config.js or config.json
• config.local.js or config.local.json
• config.NODE_ENV.js or config.NODE_ENV.json

Each next file, overrides previous config via merge way

Options

You can pass additional options to jconf via global object:

• baseName - Change default config file name prefix for files. Default: config
• configPath - Change default config search path. Default: script start dir
• excludeConfigName - After loading, jconf place to config object property _configName with loaded config name. if you don't need it, just set true. Default: false
• debug - If true, jconf will be print debug output to via console.log. Default: false

Example

'use strict';

global.jconf = {
  configPath: __dirname + '/config',
  excludeConfigName: true
}
const config = require('jconf');

Why global ???!!!
jconf try to load your configs on first require and cache result config to nodejs modules cache. It helps reduce file operations on application load or in dynamic require.

At this moment I don't have any idea, how change it and keep caching, pull requests are welcome!