Download csv in Node.js

readme.md

Using express.js you can force a file download by setting the appropriate http headers and content type.

This example forces a .csv file download.

index.js

app.get('/csv', (req, res) => {
  let data = "name,age,status\nderek,30,online\nsarah,28,offline\nDan,36,online"
  let filename = 'cool.csv'
  res.setHeader('Content-disposition', `attachment; filename=${filename}`)
  res.set('Content-Type', 'text/csv')
  res.send(data)
})