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var oldOffset = jQuery.fn.offset;
jQuery.fn.offset = function() {
var docElem,
elem = this[ 0 ],
origin = { top: 0, left: 0 };
if ( !elem || !elem.nodeType ) {
migrateWarn( "jQuery.fn.offset() requires a valid DOM element" );
return origin;
}
docElem = ( elem.ownerDocument || document ).documentElement;
if ( !jQuery.contains( docElem, elem ) ) {
migrateWarn( "jQuery.fn.offset() requires an element connected to a document" );
return origin;
}
return oldOffset.apply( this, arguments );
};
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