I use the following code to use config file and I want to read the values and I try with the following and I got error TypeError: undefined is not a function

This is the json file which I created in folder configuration/config

    {
      "ENV": {
        "dev": {
          "PORT": 3050
        },
        "prod": {
          "PORT": 3060
        }
      }
}


config = require('./configuration/config');

I try like the following to get the ENV and I got error

var env = config.get('ENV');

I use this module

In debug I saw that the config is object with the defined values...

I use the following code to use config file and I want to read the values and I try with the following and I got error TypeError: undefined is not a function

This is the json file which I created in folder configuration/config

    {
      "ENV": {
        "dev": {
          "PORT": 3050
        },
        "prod": {
          "PORT": 3060
        }
      }
}


config = require('./configuration/config');

I try like the following to get the ENV and I got error

var env = config.get('ENV');

I use this module https://www.npmjs./package/config

In debug I saw that the config is object with the defined values...

• javascript
• json
• node.js

• 1 Should there by ma at "PORT": 3060, ? – aleksandar Commented Jul 1, 2015 at 15:28
• @wazaaaap- not this is not the problem the json is valid I just remove unnecessary properties for the post... – John Jerrby Commented Jul 1, 2015 at 15:29
• Package you are using uses main folder name in require() then filename.object for the get() function. – ODelibalta Commented Jul 1, 2015 at 15:31
• @Archer - sorry buy which URL? – John Jerrby Commented Jul 1, 2015 at 15:31
• It's okay - I deleted that ment as you added more info that made it irrelevant. – Reinstate Monica Cellio Commented Jul 1, 2015 at 15:31

3 Answers 3

According to the module link you provided the config JSON (default.json) needs to be in a folder off root called "config". You can then require the module config using

var config = require('config');

and that appears to automatically load the JSON in and parse it.

You can then use the get method like you did in your question:

var env = config.get('ENV');

You are using it wrong.

You need to have a "config/default.json", based on your root folder.

Then, just:

var config = require( 'config' );

var env = config.get( 'ENV' );

console.log( env );

config/default.json file:

{
  "ENV": {
    "dev": {
      "PORT": 3050
    },
    "prod": {
      "PORT": 3060
    }
  }
}

Just tested with you data, it works correctly.

EDIT:

I'm not sure if you need to use this module, but if you don't, you can just use something like this:

var config = require( './configuration/config.js' );

console.log( config.ENV );

And, your config file would be ./configuration/config.js (mind the .js not .json):

module.exports = {
  "ENV": {
    "dev": {
      "PORT": 3050
    },
    "prod": {
      "PORT": 3060
    }
  }
}

That's a simple, but efficient, config file.

You are using the module in the wrong way, you need to do this:

Put a folder called config in your app folder, then you should create a file called default.json inside that folder. So, it should look like this:

yourApp
--config
----default.json

the content of default.json based in your example should be only this:

{
  "ENV": {
    "dev": {
      "PORT": 3050
    },
    "prod": {
      "PORT": 3060
    }
  }
}

and then, when you want to use your configuration anywhere you should require the module like this:

var config = require('config');

and then use your values like this:

var devPort = config.get("ENV.dev.port");

And sure, you can also do something like this:

var config = require('config');
var env = config.get('ENV.dev');
var port = env.port;

Remember that is a JSON, you can play with the same way you can play with objects.