readable-stream provides a framework for creating custom readable streams, including those that read data from files, network sockets, or other sources. It allows for fine-grained control over how data is read and emitted, supporting both synchronous and asynchronous operations.

blob-util does not create streams directly, but it provides utilities for manipulating Blobs and Files, such as converting them to Data URLs or Array Buffers. This can be useful for preparing data before streaming or uploading.

streamifier converts non-streaming data (like Buffers, Blobs, or Files) into readable streams. This is particularly useful when you need to integrate data from different sources into a streaming workflow.

blob-stream creates a readable stream from a Blob or File object, allowing you to read the data in chunks as it is being uploaded or processed. This is useful for handling large files without loading them entirely into memory.

readable-stream handles data in a streaming fashion, allowing you to process chunks of data as they are read. This is efficient for working with large datasets or real-time data streams, as it minimizes memory usage by processing data incrementally.

blob-util provides various functions for manipulating binary data, including converting Blobs to Array Buffers, Data URLs, or text. It handles data in both binary and text formats, making it versatile for different use cases.

streamifier streams data from non-streaming sources, allowing you to handle it in chunks. This is useful for processing binary data, such as images or files, in a memory-efficient manner.

blob-stream handles binary data by streaming it in chunks from a Blob or File object. This allows for efficient processing of large files without consuming excessive memory, as only a small portion of the file is read at a time.

readable-stream is designed to be compatible with the Node.js Stream API and other streaming libraries, making it easy to integrate with existing codebases and frameworks that use streams.

blob-util can be used alongside other APIs that work with Blobs and Files, such as the File API, Canvas API, and XMLHttpRequest. Its utility functions complement these APIs by providing additional functionality for data manipulation.

streamifier works well with any API that accepts readable streams, allowing you to convert non-streaming data sources into streams that can be processed by other parts of your application.

blob-stream integrates seamlessly with other streaming APIs, allowing you to pipe the readable stream it creates into writable streams, such as those used for uploading files or processing data in real-time.

Creating a Custom Readable Stream with readable-stream

const { Readable } = require('readable-stream');
const myStream = new Readable({
  read(size) {
    this.push('Hello, world!');
    this.push(null); // Signal the end of the stream
  },
});

myStream.on('data', (chunk) => {
  console.log(chunk.toString()); // Output: Hello, world!
});

Using blob-util to Convert a Blob to a Data URL

const blobUtil = require('blob-util');
const myBlob = new Blob(['Hello, world!'], { type: 'text/plain' });

// Convert the Blob to a Data URL
blobUtil.getBlobAsDataURL(myBlob).then((dataUrl) => {
  console.log(dataUrl); // Output: data:text/plain;base64,SGVsbG8sIHdvcmxkIQ==
});

Converting a Buffer into a Readable Stream using streamifier

const streamifier = require('streamifier');
const myBuffer = Buffer.from('Hello, world!');
const stream = streamifier.createReadStream(myBuffer);

stream.on('data', (chunk) => {
  console.log(chunk.toString()); // Output: Hello, world!
});

Creating a Readable Stream from a Blob using blob-stream

const blobStream = require('blob-stream');
const myBlob = new Blob(['Hello, world!'], { type: 'text/plain' });
const stream = blobStream();

// Write the Blob data to the stream
stream.end(myBlob);

// Read the data from the stream
stream.on('data', (chunk) => {
  console.log(chunk.toString()); // Output: Hello, world!
});