How to send pdf as a response to express request? about fluentreports HOT 3 CLOSED

var _createPdf = function (theStatement, cb) {
     // pass the string "buffer"; so it knows I want the report buffered in callback
        var r = new report("buffer").data({});
        r.margins(20).pageheader(function(x){x.print('simple page header');});

       // cb is called as (error, pdfBuffer)
        r.render(cb);      
  };

var resultReport = new Report("buffer")
        .fontsize(9)
        .margins(40)
        .header(header)
        .detail(detail)
        .data(testData)
        .render(function (error, pdfBuffer) {
               console.log(pdfBuffer);
               res.end(pdfBuffer, 'binary');
        })