var common;

module.exports = common = {

  /*
  	Checks to see if o is an object, and it isn't an instance
  	of some class.
   */
  isBareObject: function(o) {
    if ((o != null) && o.constructor === Object) {
      return true;
    }
    return false;
  },

  /*
  	Returns type of an object, including:
  	undefined, null, string, number, array,
  	arguments, element, textnode, whitespace, and object
   */
  typeOf: function(item) {
    var _ref;
    if (item === null) {
      return 'null';
    }
    if (typeof item !== 'object') {
      return typeof item;
    }
    if (Array.isArray(item)) {
      return 'array';
    }
    if (item.nodeName) {
      if (item.nodeType === 1) {
        return 'element';
      }
      if (item.nodeType === 3) {
        return (_ref = /\S/.test(item.nodeValue)) != null ? _ref : {
          'textnode': 'whitespace'
        };
      }
    } else if (typeof item.length === 'number') {
      if (item.callee) {
        return 'arguments';
      }
    }
    return typeof item;
  },
  clone: function(item, includePrototype) {
    if (includePrototype == null) {
      includePrototype = false;
    }
    switch (common.typeOf(item)) {
      case 'array':
        return common._cloneArray(item, includePrototype);
      case 'object':
        return common._cloneObject(item, includePrototype);
      default:
        return item;
    }
  },

  /*
  	Deep clone of an object.
  	From MooTools
   */
  _cloneObject: function(o, includePrototype) {
    var clone, key;
    if (includePrototype == null) {
      includePrototype = false;
    }
    if (common.isBareObject(o)) {
      clone = {};
      for (key in o) {
        clone[key] = common.clone(o[key], includePrototype);
      }
      return clone;
    } else {
      if (!includePrototype) {
        return o;
      }
      if (o instanceof Function) {
        return o;
      }
      clone = Object.create(o.constructor.prototype);
      for (key in o) {
        if (o.hasOwnProperty(key)) {
          clone[key] = common.clone(o[key], includePrototype);
        }
      }
      return clone;
    }
  },

  /*
  	Deep clone of an array.
  	From MooTools
   */
  _cloneArray: function(a, includePrototype) {
    var clone, i;
    if (includePrototype == null) {
      includePrototype = false;
    }
    i = a.length;
    clone = new Array(i);
    while (i--) {
      clone[i] = common.clone(a[i], includePrototype);
    }
    return clone;
  }
};

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