stream-array

What is stream-array?

The stream-array npm package allows you to create a readable stream from an array of data. This can be useful for processing data in a stream-based manner, which is often more efficient and scalable than processing data in a batch.

What are stream-array's main functionalities?

Create a readable stream from an array

This feature allows you to convert an array into a readable stream. The code sample demonstrates how to create a readable stream from an array of numbers and log each chunk of data as it is read from the stream.

const streamArray = require('stream-array');
const array = [1, 2, 3, 4, 5];
const readableStream = streamArray(array);
readableStream.on('data', (chunk) => {
  console.log(chunk);
});

Pipe the stream to another writable stream

This feature allows you to pipe the readable stream created from an array to another writable stream. The code sample demonstrates how to create a readable stream from an array of strings and pipe it to a writable stream that logs each chunk of data.

const streamArray = require('stream-array');
const { Writable } = require('stream');
const array = ['a', 'b', 'c'];
const readableStream = streamArray(array);
const writableStream = new Writable({
  write(chunk, encoding, callback) {
    console.log(chunk.toString());
    callback();
  }
});
readableStream.pipe(writableStream);

Other packages similar to stream-array

from2

The from2 package provides a way to create a readable stream from a variety of sources, including arrays, buffers, and iterators. It offers more flexibility compared to stream-array, which is specifically designed for arrays.

readable-stream

The readable-stream package is a core Node.js module that provides a standard interface for working with streams. It is more comprehensive and versatile than stream-array, supporting a wide range of stream operations beyond just converting arrays to streams.

through2

The through2 package allows you to create transform streams, which can modify or transform the data as it passes through. While stream-array focuses on creating readable streams from arrays, through2 provides more advanced stream manipulation capabilities.

README

stream-array

Pipe an Array through Node.js Streams. This is rather useful for testing other streams.

Usage

var streamify = require('stream-array'),
    os = require('os');

streamify(['1', '2', '3', os.EOL]).pipe(process.stdout);

API

streamify(Array)

The result of require is a 'function()' that when invoked, will return a Readable Stream.

var streamify = require('stream-array');

The source array can contain any type as it is assumed that the receiving stream can handle it. Each element in the array will be pushed into the piped stream, without modifying the source array.

var readable = streamify(['Hello', new Buffer('World')]);

This Stream will push each element of the source array into the piped array.

readable(['1', '2', '3', os.EOL]).pipe(process.stdout);

123\n

Install

npm install stream-array

License

MIT License