express-request-csv

CSV's should be easy to send to users that request them. Here's how we do it

const expressRequestCSV = require('express-request-csv')
const app = express()
app.use(expressRequestCSV())
app.use('/some-data', (req, res, next) => {
  res.json([{a: 1}, {a: 2}])
})

client side

const json = await fetch('/some-data')

const csv = await fetch('/some-data', {
  headers: {
    Accept: 'text/csv'
  }
})

Configuration Options

• Parser - Don't like json2csv? Don't use it! Swap it out with your own parser.
• config - The configuration to pass to the new parser for the middleware instance. Uses empty object by default.
• header - Change the header that you react to and send in Content-Type response header. Uses text/csv by default.
• shouldUse - An optional function to check the request and determine whether the csv parser should be used. Defaults to checking the request header for text/csv
• query - A key to check for field subsetting passed from the client in the query string. Defaults to fields.