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thread-stream
Advanced tools
The thread-stream npm package is designed to facilitate the creation of writable streams that operate within worker threads in Node.js. This allows for offloading CPU-intensive tasks or I/O-bound tasks to separate threads, improving the performance and responsiveness of Node.js applications.
Creating a basic thread stream
This code demonstrates how to create a basic thread stream using the thread-stream package. It involves specifying a worker file and optional worker data. The stream created can be used like any other writable stream in Node.js.
const ThreadStream = require('thread-stream');
const stream = new ThreadStream({
filename: path.join(__dirname, 'worker.js'),
workerData: { exampleData: 'data' },
sync: false
});
stream.write('Hello, world!');
stream.end();
Handling stream events
This example shows how to handle data and end events from a thread stream. It allows processing of data received from the worker thread and handling the end of the stream.
stream.on('data', (data) => {
console.log('Data from stream:', data);
});
stream.on('end', () => {
console.log('Stream ended.');
});
Workerpool is a package that manages a pool of workers and handles the execution of tasks in these workers. It is similar to thread-stream in that it helps offload tasks to separate threads but differs in its approach by managing multiple workers and tasks rather than focusing on stream-based communication.
Bthreads provides a wrapper around Node.js worker threads, simplifying thread management and communication. While it shares the goal of enhancing performance through threads like thread-stream, bthreads does not specifically focus on stream-based interfaces, offering a broader range of thread management features.
A streaming way to send data to a Node.js Worker Thread.
npm i thread-stream
'use strict'
const ThreadStream = require('thread-stream')
const { join } = require('path')
const stream = new ThreadStream({
filename: join(__dirname, 'worker.js'),
workerData: { dest }
})
stream.write('hello')
stream.flush(function () {
stream.write(' ')
stream.write('world')
stream.flushSync()
stream.end()
})
In worker.js
:
'use strict'
const fs = require('fs')
const { once } = require('events')
async function run (opts) {
const stream = fs.createWriteStream(opts.dest)
await once(stream, 'open')
return stream
}
module.exports = run
MIT
FAQs
A streaming way to send data to a Node.js Worker Thread
The npm package thread-stream receives a total of 5,134,378 weekly downloads. As such, thread-stream popularity was classified as popular.
We found that thread-stream demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 3 open source maintainers collaborating on the project.
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