global-node 🌍

This module helps in solving the problem of managing global variable in nodejs application. Set the global variable using global-node class and get it anywhere in application using the same class. It helps in writing clean and maintainable code.

Install instruction

Below npm v5.0.0

 $ npm install global-node --save

Above v5.0.0

 $ npm install global-node 

Usage

Require the module

const globalNode = require('global-node');

Basic add and get properties

/* 
  in app.js 
  make a instance of global-node by just requiring the module
  and set some properties
*/

const globalNode = require('global-node');
globalNode.setProperty('key', 'value');
const val = globalNode.getValue('key');
console.log(val) // -> value;

/*
  now in some other file just get the variable by requiring the module and calling getValue('key'); function
*/

const val = globalNode.getValue('key');
console.log(val) // -> value;

globalNode.getValue(key)

Get the value of the property.

const val = globalNode.getValue(key);
console.log(val)

globalNode.deleteProperty(key)

Delete the property.

// if property doesn't exist it will throw an error
globalNode.deleteProperty(key);

globalNode.listProperty()

List all the properties.

globalNode.setProperty('key', 'value');
globalNode.setProperty('key2', 'value2');
const lst = globalNode.listProperty() //  returns and array
console.log(lst) // [ key, key2 ];

globalNode.isPropertyExist(key)

Check if property exist.

globalNode.setProperty('key', 'value');
const isExist = globalNode.isPropertyExist('key');
console.log(isExist) // true;
isExist = globalNode.isPropertyExist('nokey');
console.log(isExist) // false;

globalNode.emptyAll()

Clear all the global properties

globalNode.setProperty('key', 'value');globalNode.emptyAll()
const lst = globalNode.listProperty() //  returns and array
console.log(lst) // [ ]; // removed all the property from the global object

Fetch properties from .json file

You can get the default global variables from the file by setting the environment variable GLOBAL_CONFIG_FILE='/pathtofile' this must be the absolute path to the file and the file must be a valid JSON otherwise it will throw and error.

Test

 $ npm install
 $ npm run test
 $ npm run test:coverage // for coverage

• Test 1: File exist
• Test 2: File not exists
• Test 3: Check Property Exists
• Test 4: Get Property
• Test 5: Get Property After Set
• Test 6: Delete Property After Set
• Test 7: Property Don't Exist
• Test 8: Property Do Exist
• Test 9: List Property

Tests After Clearing all Properties

• Test 10: Get Property After Set
• Test 11: Get After Delete Property
• Test 12: Delete Non existing Property
• Test 13: Property Don't Exist
• Test 14: Property Do Exist
• Test 15: List Property

Contributing

Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change. Please make sure to update tests as appropriate.

License

MIT