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duplexer

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duplexer

Creates a duplex stream

0.1.1
Source
npm

Version published: 11 years ago

Maintainers: 2

Created: 12 years ago

Package description

What is duplexer?

The `duplexer` npm package is a utility for creating a duplex (readable and writable) stream from two separate streams: a writable stream for writing to and a readable stream for reading from. This is particularly useful in scenarios where you need to treat two separate streams as a single duplex stream for piping data through a series of transformations or operations.

What are duplexer's main functionalities?

Creating a duplex stream from a writable and readable stream

This code demonstrates how to create a duplex stream using `duplexer` by combining a writable stream, which logs data it receives, and a readable stream, which emits a single piece of data. The resulting duplex stream can be used to read data emitted by the readable stream and write data to the writable stream.

const {Writable, Readable} = require('stream');
const duplexer = require('duplexer');

const writable = new Writable({
  write(chunk, encoding, callback) {
    console.log(`Writing: ${chunk.toString()}`);
    callback();
  }
});

const readable = new Readable({
  read(size) {
    this.push('Read data');
    this.push(null); // No more data
  }
});

const duplex = duplexer(writable, readable);
duplex.on('data', (data) => console.log(`Read from duplex: ${data.toString()}`));
duplex.write('Data to write');

Other packages similar to duplexer

Readme

Source

duplexer

Creates a duplex stream

Taken from event-stream

duplex (writeStream, readStream)

Takes a writable stream and a readable stream and makes them appear as a readable writable stream.

It is assumed that the two streams are connected to each other in some way.

Example

var grep = cp.exec('grep Stream')

duplex(grep.stdin, grep.stdout)

Installation

npm install duplexer

Tests

npm test

Contributors

Dominictarr
Raynos
samccone

MIT Licenced

FAQs

What is duplexer?

Is duplexer well maintained?

Package last updated on 26 Apr 2013

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