define([
  	"./core",
  	"./core/init",
  	"./manipulation", // clone
  	"./traversing" // parent, contents
  ], function( jQuery ) {
  
  jQuery.fn.extend({
  	wrapAll: function( html ) {
  		if ( jQuery.isFunction( html ) ) {
  			return this.each(function(i) {
  				jQuery(this).wrapAll( html.call(this, i) );
  			});
  		}
  
  		if ( this[0] ) {
  			// The elements to wrap the target around
  			var wrap = jQuery( html, this[0].ownerDocument ).eq(0).clone(true);
  
  			if ( this[0].parentNode ) {
  				wrap.insertBefore( this[0] );
  			}
  
  			wrap.map(function() {
  				var elem = this;
  
  				while ( elem.firstChild && elem.firstChild.nodeType === 1 ) {
  					elem = elem.firstChild;
  				}
  
  				return elem;
  			}).append( this );
  		}
  
  		return this;
  	},
  
  	wrapInner: function( html ) {
  		if ( jQuery.isFunction( html ) ) {
  			return this.each(function(i) {
  				jQuery(this).wrapInner( html.call(this, i) );
  			});
  		}
  
  		return this.each(function() {
  			var self = jQuery( this ),
  				contents = self.contents();
  
  			if ( contents.length ) {
  				contents.wrapAll( html );
  
  			} else {
  				self.append( html );
  			}
  		});
  	},
  
  	wrap: function( html ) {
  		var isFunction = jQuery.isFunction( html );
  
  		return this.each(function(i) {
  			jQuery( this ).wrapAll( isFunction ? html.call(this, i) : html );
  		});
  	},
  
  	unwrap: function() {
  		return this.parent().each(function() {
  			if ( !jQuery.nodeName( this, "body" ) ) {
  				jQuery( this ).replaceWith( this.childNodes );
  			}
  		}).end();
  	}
  });
  
  return jQuery;
  });