object-extend

object-extend
=============

A well-tested function to deep extend (or merge) JavaScript objects without further dependencies.

Unit-tested with over 94 single assertion tests.

Usage
-----
``javascript
var a = {
app: 'My App',
environment: 'development',
connections: {
default: 'mysql',
mysql: {
driver: 'mysql',
host: 'localhost',
database: 'myapp.dev'
}
}
};

var b = {
environment: 'production',
connections: {
mysql: {
database: 'myapp.prod'
}
}
};

extend(a, b);

// Result:
{
app: 'My App',
environment: 'production',
connections: {
default: 'mysql',
mysql: {
driver: 'mysql',
host: 'localhost',
database: 'myapp.prod'
}
}
}
`


Limitations
-----------

Array:
Only actual objects are extended. Arrays will not be merged but overwritten.
`javascript
var a { foo: [1, 2, 3] };
var b { foo: [4, 5, 6] };

extend(a, b); // { foo: [4, 5, 6] }
``

Notes
-----

This function extends only enumerable properties without going up the prototype chain.

License
-------
MIT.