node-csv

The csv project provides several specialized packages for handling CSV data:

• csv-generate: A flexible generator of CSV strings and JavaScript objects.
• csv-parse: A parser that converts CSV text into arrays or objects.
• csv-stringify: A stringifier that converts records into CSV text.
• stream-transform: A transformation framework for processing data streams.

The stream-transform project is a simple object transformation framework that supports:

• Node.js Stream API: Extends the native stream.Transform API for scalability.
• Multiple API Flavors: Provides callback-based, synchronous, and stream-based APIs.
• Flexible Input/Output: Accepts objects, arrays, or JSON.
• Execution Modes: Supports both synchronous and asynchronous user functions, as well as sequential and parallel/concurrent execution.
• Record Manipulation: Ability to skip records, multiply records, alter records, or clone input records.

The csv-parse package is a flexible CSV parser for Node.js and the web with the following capabilities:

• Multiple Distributions: Supports Node.js, Web, ECMAScript modules (ESM), and CommonJS (CJS).
• API Flavors: Provides a Node.js streaming API for scalability, as well as simple callback and synchronous APIs for convenience.
• Parsing Support: Handles delimiters, quotes, escape characters, comments, and automatic line break discovery.
• No Dependencies: The package has no external dependencies.
• Ecosystem Integration: Works seamlessly with csv-generate, stream-transform, and csv-stringify.

The csv-stringify package provides three main ways to convert records into CSV text:

1. Node.js Stream API: Implements stream.Transform for high scalability and handling big datasets.
2. Callback API: A simpler asynchronous approach for convenience.
3. Synchronous API: The easiest way to convert data to a string synchronously (available via csv-stringify/sync).

Key features include support for custom formatters, delimiters, quotes, escape characters, and headers.

To use the CSV tools for Node.js and the web, install the main package via npm.

npm install csv

To verify the samples in the CommonJS demo, you can execute the test suite which runs each sample located in the ./lib folder. Use the command corresponding to your Node.js version:

• For Node.js 12 and above: yarn test
• For Node.js 8 to 11: ./test/node8.sh

To build and run the webpack bundler with TypeScript demonstration, use the following commands:

1. Build the project: npm run build
2. Start the demonstration: npm run start

To install only the CSV stringifier, run:

npm install csv-stringify

If you need the full CSV module (including parser and generator), run:

npm install csv