scratch – Rev 125

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define(function() {
        return function( elem ) {
                // Support: IE<=11+, Firefox<=30+ (#15098, #14150)
                // IE throws on elements created in popups
                // FF meanwhile throws on frame elements through "defaultView.getComputedStyle"
                if ( elem.ownerDocument.defaultView.opener ) {
                        return elem.ownerDocument.defaultView.getComputedStyle( elem, null );
                }

                return window.getComputedStyle( elem, null );
        };
});