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 🙏

© 2026 – Pkg Stats / Ryan Hefner

structured-js

v1.0.0

Published

Common data structures implemented in Javascript

Downloads

9

Readme

structured-js

Common data structures implemented in Javascript.

This is a personal project to help myself retain knowledge of data structures - and learn more about their implementations in the process. I also plan to use this to decrease inertia on days when I wish to learn or practice languages that I have less practice with (i.e. pick up the language and begin reimplementing some of these in it, to get familiar with writing in the language's syntax).

Meaning: I advise against using this library for anything production, particularly in it's current (hardly benchmarked, not fully tested) state.


Currently available structures:

  • Bloom Filter
  • Binary Heap (+ Min variation)
  • Priority Queue (based on underlying Binary Heap)
  • AVL Tree
  • (Naive) Binary Search Tree (use AVL instead... This was created more for fun)
  • Linked List

Build (How To, Commands):

Install dependencies: npm install Test: npm test Coverage: npm run-script cover Compile to ES5: npm run makeES5

TODO:

Tests

Remaining test coverage required:

  • Linked List: Require writing specs entirely
  • Trees: Private method testing

Benchmarks

Benchmarks can be helpful for various reasons. They help to demonstrate why and when a data structure is worth considering. They can also help compare and contrast similar (or differently implemented) structures.

Additional commenting

The initial implementations of data structures are commented very lightly; given that this library is primarily forcused on learning, some sets of steps could benefit from explanation.

MORE DATA STRUCTURES! Some examples to implement soon:

  • Tries!
  • (More) Binary Search Trees. (Various, balancing)
  • Suffix Tree, Radix Tree
  • Suffix Array
  • Graphs! (Adjacency list, Adjacency matrix)

Other:

Consider a src/utilities.js file for common code (helpers to alias prototype functions, etc.)