Nodevar

Creates objects with steroids.

Installation

$ npm install nodevar --save-dev

Features

• Creating dynamic objects.
• History of changes in variables.
• Automatic handling of native methods.
• Observe changes.

Usage

History changes

var Nodevar = require('nodevar');
 
var pet = new Nodevar();
 
pet.data = "Pecas";
pet.data = "Misingo";
 
console.log(pet.getTrace())
/**
[
  { val: 'Pecas', date: 2017-03-23T04:21:51.529Z },
  { val: 'Misingo', date: 2017-03-23T04:21:51.529Z }
]
*/

Use pet.clear() to clear the history.

Using native methods

Full control of the native methods of an object with Nodevar. The onChage function is called when there is a state change in the variable, ie it is activated when the = operator is used. The onGet function is called before displaying the variable data.

// Declare options
var options = {
  data: 'Picasso',
  onChange: function ($old, $new) {
    console.log(`Change ${$old} to ${$new}`)
  },
  onGet: function (value) {
    return `My pet is ${value}`;
  }
}
 
var pet = new Nodevar(options);
 
pet.data = "Pecas";   //=> Change Picasso to Pecas
pet.data = "Misingo"; //=> Change Pecas to Misingo
pet.data = "Caesar";  //=> Change Misingo to Caesar
 
console.log(pet.data) //=> My pet is Caesar
 
console.log(pet.getTrace())
/*=>
[ { val: 'Picasso', date: 2017-03-23T04:32:00.748Z },
  { val: 'Pecas', date: 2017-03-23T04:32:00.757Z },
  { val: 'Misingo', date: 2017-03-23T04:32:00.758Z },
  { val: 'Caesar', date: 2017-03-23T04:32:00.758Z }]
*/

Observe changes

Create observable variable.

var myvar = new Nodevar();
 
myvar.watch('unicorn', function (oldval, val) {
    console.log(`The unicorn is ${val} color`)
});
 
myvar.unicorn = "white";  //=> The unicorn is white color
myvar.unicorn = "pink";   //=> The unicorn is pink color

Use the method unwatch for remove watch. ie:

myvar.unwatch('unicorn');

For more information see examples

License

MIT

By @juliandavidmr

Public Domain.