How to get PDF file from nodejs server?

Question

JavaScript

There is a pdf file on the server.
I receive it and send it in the server response with content-type = 'application/pdf' how can I get this file from js and download/open it?
let file=fs.readFileSync('./file.pdf')
... res.write(file);

Answer 1

Better through streaming.
Something like this:

(res, req) => {
      let writeStream = fs.createWriteStream(path, {defaultEncoding: 'binary'}),
      req.pipe(writeStream)
}