utils-extend

Extend nodejs util api, and it is light weight and simple.
``
var util = require('utils-extend');
`

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`
npm install utils-extend --save
`

API

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Extend api in nodejs util module,

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Deep clone soure object to target
`js
var target = {};
var source = {
k: 'v',
k2: []
};
var source2 = {
k3: { }
};

util.extend(target, source, source2);
`

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Check target is object, array and function return false.

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Chck target is array
`
uitl.isArray = Array.isArray

`


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Empty function

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Make array unique.
`
var arr = [4, 5, 5, 6];
var result = uitl.unique(arr);
`

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Return a copy of the object with list keys
`js
util.pick({ key: 'value' }, 'key');
util.pick({ key: 'value' }, function(value, key, object) { });
`

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Escapes a string for insertion into HTML, replacing &, <, >, ", , and ' characters.
``js
var html = '

'
var result = util.escape('

')
`

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The opposite of escape

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Return true is path isabsolute, otherwise return false.
`
util.path.isAbsolute('C:\\file\\path'); // windows
util.path.isAbsolute('/file/path'); // unix
``

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Normalize \ paths to / paths.