Jsoncfg NPM | npm.io

Node.js - jsoncfg

Easily read JSON files from a directory. Great for configuration.

Why?

I store configuration data in JSON files. It's handy to load them up and parse them with one method. Also, it includes undefined field support from field.

Installation

npm install jsoncfg

Usage

Example

Let's assume that you have the following files structure:

./config
├── database.json
├── malformed.json
├── shopping.json
├── weird\ name2.json
├── weird-name.json
└── weird_name3.json

let's assume that database.json looks like:

{
    "development": {
        "name": "myapp_development",
        "host": "127.0.0.1",
        "port": 27017
    },
    "test": {
        "name": "myapp_test",
        "host": "127.0.0.1",
        "port": 27017
    },
    "production": {
        "name": "myapp_production",
        "host": "myserver.com",
        "port": 27017
    }
}

var jsoncfg = require('jsoncfg');

jsoncfg.loadFiles('./config', function(err, files, errInfo) {
  if (err) { //this is an error object, see errInfo for all errors for each file
    console.log(errInfo['malformed']) //could not parse 'malformed.json'
  }

  console.log(files.database.production.host) //"myserver.com"

  var dbCfg = files.database

  //can also use string notation to avoid the following:
  var host = (dbCfg && dbCfg.production && dbCfg.production.host)
  host = dbCfg.get('production.host')

  //use ':' if you prefer
  host = dbCfg.get('production:host')

  //or treat everything as a field, including the configuration file
  host = files.get('database:production.host')

  //you can also create fields
  dbCfg.set('production.location.country', 'US') //returns old value if overwriting or value, or `undefined` if new
  console.log(dbCfg.production.location.country) //'US'
})