
## Table of Contents

1. [Introduction](#introduction)
2. [Install nconf](#install-nconf)
3. [Use nconf](#use-nconf)
4. [Load the Config Value](#load-the-config-value)
5. [Conclusion](#conclusion)

## Introduction

This blog shows how to use nconf for Node.js environment configuration.
Environment config is needed in any coding language. For instance, the
database endpoint for each of the environments — your development and
production — should be different.

## Install nconf

Using nconf is very easy. First, add it to your solution's dependency packages.

```
npm install nconf --save
```

## Use nconf

You can write a helper class like the following to use nconf. First, you import
the package into your file, load the JSON file, then return the nconf instance.

```
const nconf = require('nconf');
nconf.file('env.json');
exports.config = nconf;
```

This JSON file will be your app's environment configuration. You can put all
your configuration dependencies in this JSON file. Later, each of your
environments just updates this JSON file to match that environment's config.

```
{
  "AWS": {
    "region": "us-west-1"
  },
  "Port": 3000
}
```

## Load the Config Value

You can simply load the config value with the following code.

```
// load port
config.get("Port")
// load nested object
config.get('AWS:region')
```

## Conclusion

You can use other Node.js config packages, such as dotenv, but in my opinion,
nconf is much easier to use. The config file is much easier to define — it's just a
JSON format.


This blog shows how to use nconf for Node.js environment configuration.

nconf

How to Use nconf for Environment Configuration at Node.js