private-name v0.1.0

name

A very simple ES.next shim. It works fairly well without any monkey-patching (though it does need to create one non-enumerable property on Object.prototype but it's much less intrusive than replacing functions. The variable name is random and uses unicode characters so the chances of conflicts are slim to none)

Installation

Install with component(1):

$ component install ilsken/name

Usage (with component or node.js)

var Name = require('name')
var myObject = {}
// you can also use new Name('something') to create a friendlier name for debugging tools which can see hidden properties

var hiddenProperty = new Name()

myObject[hiddenProperty] = 'foo'

console.log(myObject) // {}
console.log(myObject[hiddenProperty]) // "foo"
console.log(myObject.hasOwnProperty(hiddenProperty)) // false
console.log(Object.keys(myObject)) // []

## Usage (plain script tags)
```html
<script src="dist/name.js"></script>
<script>
  var hiddenProperty = new Name()
  // etc

Gotchas

While this shim for the most part works without any monkey-patching there are currently a couple ways to leak the private properties names. If you want to fix those leaks you can use the patches below

Object.propertyNames(object)

var props = Object.getOwnPropertyNames
function getOwnPropertyNames(obj){
	return props(obj).filter(Name.isPublic)
}
Object.getOwnPropertyNames = getOwnPropertyNames

Object.hasOwnProperty(Object.prototype, hiddenProperty)

If you define hidden properties on Object.prototype the method we use to hide doesn't work. I don't know why you would define hidden properties on the prototype but just in case here's how you'd patch this leak

var has = Object.hasOwnProperty
function hasOwnProperty(obj, prop){
	return Name.isPublic(prop) && has(obj, prop)
}

License

MIT