Package Exports

stream-blockify
stream-blockify/dist/index.js

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Readme

stream-blockify

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A powerful and flexible Node.js library for processing streams in fixed-size blocks. This library extends Node's Transform stream to provide block-based data processing with customizable options for handling partial blocks, applying padding, and transforming block content.

Features

Process streaming data in configurable fixed-size blocks
Control handling of partial blocks at stream end (emit as-is or pad to full size)
Apply custom padding for incomplete blocks (single byte value or buffer pattern)
Execute callbacks for each completed block
Implement custom block transformations
Manage memory usage with block buffering limits
Safe or fast buffer allocation options

Use Cases

Processing fixed-record format files
Block-based encryption/decryption
Audio/video frame processing
Network protocol implementations
Disk I/O optimization
Performance-critical data processing pipelines

Installation

npm install stream-blockify

Simple Example

import { StreamBlockify } from 'stream-blockify';
import { createReadStream, createWriteStream } from 'node:fs';

// Create a transform stream that processes data in 1024-byte blocks
const blockify = new StreamBlockify({
  blockSize: 1024,
  emitPartial: true
});

// Pipe a file through the transform stream
createReadStream('input.dat')
  .pipe(blockify)
  .pipe(createWriteStream('output.dat'));

Documentation

For complete documentation, see the Documentation.