PDF_GENERATION_WITH_PHANTOM_CONTROLLER

pdf.js

  pdf(req, res) {
    const {id} = req.params
    var fs = require('fs');
    phantom.create().then(function(ph) {
      ph.createPage().then(function(page) {
          page.open(`${config.HTTP_HOST}/api/v1/html-report-endpoint/${id}`).then(function(status) {
              var fileName  = `./public/uploads/pdf/${id}.pdf`
              page.render(fileName).then(function() {
                  // HERE RETURNS AS PDF  
                  var file = fs.createReadStream(fileName);
                  var stat = fs.statSync(fileName);
                  res.setHeader('Content-Length', stat.size);
                  res.setHeader('Content-Type', 'application/pdf');
                  file.pipe(res);
                  ph.exit();
              });
          });
      });
  });
  }