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csv-stringify

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csv-stringify

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


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What is csv-stringify?

The csv-stringify npm package is a module that provides the ability to convert arrays or objects into a CSV (Comma-Separated Values) string. It can be used to generate CSV files or strings from JavaScript data structures, supporting both the Node.js stream API and a simple callback-based API.

What are csv-stringify's main functionalities?

Stringifying an array of records

This feature allows you to convert an array of arrays (representing records) into a CSV string. Each sub-array is a row in the CSV output.

const stringify = require('csv-stringify');
const records = [['1', '2', '3'], ['a', 'b', 'c']];
stringify(records, (err, output) => {
  if (err) throw err;
  console.log(output);
});

Stringifying from a stream

This feature demonstrates how to use csv-stringify with Node.js streams. Data can be piped into the stringify function, which then outputs a CSV formatted stream.

const stringify = require('csv-stringify');
const { Readable } = require('stream');
const records = new Readable({
  objectMode: true,
  read() {}
});
records.push(['1', '2', '3']);
records.push(['a', 'b', 'c']);
records.push(null);
records.pipe(stringify()).pipe(process.stdout);

Stringifying objects with column headers

This feature allows you to convert an array of objects into a CSV string, including column headers as the first row in the output.

const stringify = require('csv-stringify');
const records = [{ id: '1', name: 'John Doe' }, { id: '2', name: 'Jane Doe' }];
stringify(records, { header: true }, (err, output) => {
  if (err) throw err;
  console.log(output);
});

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Package last updated on 27 Jul 2024

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