Edit File: whet.extend.coffee
### * whet.extend v0.9.7 * Standalone port of jQuery.extend that actually works on node.js * https://github.com/Meettya/whet.extend * * Copyright 2012, Dmitrii Karpich * Released under the MIT License ### module.exports = extend = (deep, target, args...) -> unless _isClass deep, 'Boolean' args.unshift target [ target, deep ] = [ deep or {}, false ] #Handle case when target is a string or something (possible in deep copy) target = {} if _isPrimitiveType target for options in args when options? for name, copy of options target[name] = _findValue deep, copy, target[name] target ### Internal methods from now ### _isClass = (obj, str) -> "[object #{str}]" is Object::toString.call obj _isOwnProp = (obj, prop) -> Object::hasOwnProperty.call obj, prop _isTypeOf = (obj, str) -> str is typeof obj _isPlainObj = (obj) -> return false unless obj return false if obj.nodeType or obj.setInterval or not _isClass obj, 'Object' # Not own constructor property must be Object return false if obj.constructor and not _isOwnProp(obj, 'constructor') and not _isOwnProp(obj.constructor::, 'isPrototypeOf') # Own properties are enumerated firstly, so to speed up, # if last one is own, then all properties are own. key for key of obj key is undefined or _isOwnProp obj, key _isPrimitiveType = (obj) -> not ( _isTypeOf(obj, 'object') or _isTypeOf(obj, 'function') ) _prepareClone = (copy, src) -> if _isClass copy, 'Array' if _isClass src, 'Array' then src else [] else if _isPlainObj src then src else {} _findValue = (deep, copy, src) -> # if we're merging plain objects or arrays if deep and ( _isClass(copy, 'Array') or _isPlainObj copy ) clone = _prepareClone copy, src extend deep, clone, copy else copy
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