npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

rpxlib

v0.6.2

Published

A general purpose RPL/RPX library.

Downloads

49

Readme

RPXLib

A general purpose RPL/RPX library.

GitHub version downloads GitHub code size in bytes

npm release node-current license

  • Single dependency
  • Reading and writing support
  • Balanced between speed and data integrity

Usage

import * as rpxlib from 'rpxlib';
import fs from 'fs';

const rpxFileData = fs.readFileSync('./path/to/file.rpx');
const rpx = new rpxlib.RPL(rpxFileData);

// Modify rpx as desired

// Do not include the extension!
rpx.save('./path/to/save/file', true);
// Modified RPX will be at ./path/to/save/file.rpx

Notes

  • The library automatically handles and calculates section offsets, sizes, indexes, among other values and as such doesn't allow manually setting those.
  • In contrast, section virtual addresses are NOT handled or checked, the user must ensure those are valid manually.
    • However RPL.addressRanges is provided to assist with finding the right values to use.
  • Relocation sections are not parsed by default as they can be very large and slow to parse, it is recommended to read relocations manually from the raw data as you need them.
    • If you really want relocations parsed, you can pass an options object with parseRelocs: true to the RPL constructor.
      • You will be blocked from writing to the raw data of relocation sections if the relocations are parsed.
  • Most special section types do not allow writing directly to their raw data to prevent desync from the parsed data and the raw data.
    • The parsed data of special sections will be serialized and overwrite the raw data upon each request to read the raw data.
      • For this reason it's highly recommended to not repeatedly call Section.data without need as you will be repeatedly regenerating the data for special sections.
      • It's also highly recommended to use Section.size over Section.data.byteLength, as the former does not require the generation of the entire raw section data for special sections.
  • Program headers (segments) are parsed as read-only without data references and cannot be saved back.