CSV stringifier implementing the Node.js `stream.Transform` API

Usage no npm install needed!

<script type="module">
  import postedinCsvStringify from 'https://cdn.skypack.dev/@postedin/csv-stringify';


Part of the CSV module, this project is a stringifier converting arrays or objects input into a CSV text. It implements the Node.js stream.Transform API. It also provides a simple callback-based API for convenience. It is both extremely easy to use and powerful. It was first released in 2010 and is used against big data sets by a large community.

Documentation for the "csv-stringify" package is available here.


  • Follow the Node.js streaming API
  • Simplicity with the optional callback API
  • Support for custom formatters, delimiters, quotes, escape characters and header
  • Support big datasets
  • Complete test coverage and samples for inspiration
  • no external dependencies
  • to be used conjointly with csv-generate, csv-parse and stream-transform
  • BSD License


Refer to the project webpage for an exhaustive list of options and some usage examples.

The module is built on the Node.js Stream API. For the sake of simplicity, a simple callback API is also provided. To give you a quick look, here's an example of the callback API:

var stringify = require('csv-stringify');

input = [ [ '1', '2', '3', '4' ], [ 'a', 'b', 'c', 'd' ] ];
stringify(input, function(err, output){


Tests are executed with mocha. To install it, run npm install followed by npm test. It will install mocha and its dependencies in your project "node_modules" directory and run the test suite. The tests run against the CoffeeScript source files.

To generate the JavaScript files, run npm run coffee.

The test suite is run online with Travis against the versions 0.10, 0.11 and 0.12 of Node.js.