Cannot read property 'createObjectURL' of undefined at BlobStream.toBlobURL

Unable to generate pdf. Getting this issue. `F:\nodejs\projects\media-template\node_modules\blob-stream\index.js:48 return URL.createObjectURL(this.toBlob(type)); ^

TypeError: Cannot read property ‘createObjectURL’ of undefined at BlobStream.toBlobURL (F:\nodejs\projects\media-template\node_modules\blob-stream\index.js:48:13) at BlobStream.<anonymous> (F:\nodejs\projects\media-template\routes\campaign.js:115:25) at emitNone (events.js:72:20) at BlobStream.emit (events.js:166:7) at finishMaybe (_stream_writable.js:468:14) at endWritable (_stream_writable.js:478:3) at BlobStream.Writable.end (_stream_writable.js:443:5) at PDFDocument.onend (_stream_readable.js:490:10) at PDFDocument.g (events.js:260:16) at emitNone (events.js:67:13) at PDFDocument.emit (events.js:166:7) at endReadableNT (_stream_readable.js:905:12) at doNTCallback2 (node.js:441:9) at process._tickCallback (node.js:355:17)`

I am using the following configuration.

`{ “name”: “media-template”, “version”: “0.0.0”, “private”: true, “scripts”: { “start”: “node ./bin/www” }, “dependencies”: { “body-parser”: “^1.13.3”, “cookie-parser”: “~1.3.5”, “debug”: “~2.2.0”, “config”:“", “ejs”: "”, “express”: “~4.13.1”, “express-session”: “^1.10.1”, “express-validator”: “2.18.0”, “fs”: “0.0.2”, “pdfkit”:““, “blob-stream”:””, “pdfkit”:“", “mongoose”: "”, “morgan”: “~1.6.1”, “multer”: “^1.1.0”, “passport”: “^0.2.1”, “passport-local”: “^1.0.0”, “passport-local-mongoose”: “^1.0.0”, “serve-favicon”: “~2.3.0” } }

`

[ahena001]

Adding to the server side functionality and working around blob-stream, as @devongovett says, pipe instead.

In my case I needed to serve the PDF to the client ( server -> client browser ).

For me, what worked was piping the doc directly to the response back to client. Since the PDF is to be rendered on the browser, the res.contentType is set to “application/pdf” and doc is piped as previously mentioned by @devongovett -

i.e. ,

router.get('routeURL', function(req,res,next){
  var doc = new PDFDocument();

  doc.image(someData.logo, 15, 15, {
      height: 100
  });

  doc.end();

  res.contentType("application/pdf");
  doc.pipe(res);  

}

[devongovett]

blob-stream can only be used in the browser, not node.js. You need to pipe to a file instead, e.g. doc.pipe(fs.createWriteStream('out.pdf')).