Error in not tablesaw tables

[mfd]

I import tablesaw as global But on other pages in my portal not related with tablesaw all tables break on this func

    shoestring.fn.find = function( selector ){
        var ret = [],
            finds;
        this.each(function(){
                finds = this.querySelectorAll( selector );

            for( var i = 0, il = finds.length; i < il; i++ ){
                ret = ret.concat( finds[i] );
            }
        });
        return shoestring( ret );
    };