feat(config): ✨ added \node-config\

.env

@@ -1 +1 @@
-HELLO=HELLO
+HELLO=WORLD

config/custom-environment-variables.json

@@ -0,0 +1,3 @@
+{
+    "hello": "HELLO"
+}

config/default.json

@@ -0,0 +1,4 @@
+{
+    "hello": "hello from config",
+    "hi": "hi from config"
+}

package.json

@@ -10,7 +10,9 @@
     "node": ">=8.3.0",
     "npm": ">=5.2.0"
   },
-  "dependencies": {},
+  "dependencies": {
+    "config": "^2.0.1"
+  },
   "keywords": [
     "modern",
     "node",
@@ -30,7 +32,7 @@
     "?start:prod": "Startup the module with a `production` environment.",
     "start:prod": "NODE_ENV=production node -r dotenv/config ./lib/index.js",
     "?start:dev": "Startup the module with a `development` environment.",
-    "start:dev": "node node -r dotenv/config ./src/index.js",
+    "start:dev": "NODE_ENV=development node -r dotenv/config ./src/index.js",
     "?debug": "Start a debugger for the `main` entry point.",
     "debug": "node --inspect --debug-brk -r dotenv/config ./src/index.js",
     "?debug:tests": "Start a debugger for the tests",

src/index.js

@@ -1,5 +1,20 @@
 'use strict';
 
-exports.hello = function hello() {
-  return process.env.HELLO;
+const config = require('config');
+
+
+exports.fromEnv = {
+  HELLO() {
+    return process.env.HELLO;
+  }
+};
+
+exports.fromConfig = {
+  hi() {
+    return config.get('hi');
+  },
+
+  hello() {
+    return config.get('hello');
+  }
 };

test/index.test.js

@@ -1,14 +1,19 @@
 'use strict';
 
 const { expect } = require('chai');
-const { hello } = require('../src');
+const { fromConfig, fromEnv } = require('../src');
 
-describe('Importing The index module', function () {
-  it('should be a function', function () {
-    expect(hello).to.be.a('function');
+
+describe('Checking Environment Variable `HELLO`', function () {
+  it('should return value from environment variable', function () {
+    expect(fromEnv.HELLO()).to.be.equal('WORLD');
+  });
+
+  it('should return value from config file', function () {
+    expect(fromConfig.hi()).to.be.equal('hi from config');
   });
 
-  it('should return `HELLO` string from env', function () {
-    expect(hello()).to.be.equal('HELLO');
+  it('should return value from custom environment variable', function () {
+    expect(fromConfig.hello()).to.be.equal('WORLD');
   });
 });