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

@benportner/js_family_tree

v1.0.2

Published

An interactive family tree visualization using d3-dag

Readme

js_family_tree

A simplistic app for displaying family trees in your browser.

Features:

  • visualize family tree data in your browser
  • expand and collapse the tree by clicking on nodes
  • hover over nodes to display additional information in tooltips
  • move around the tree by zooming and panning
  • uses d3-dag for layout calculation and d3 for rendering

Live example here.

JSFiddle here.

| :exclamation: Note for developers | |----------------------------------------------| | v1.0.0 introduced significant changes to the codebase. Read more here. |

Quickstart

  • Edit data/data.js to represent your family tree
  • Open index.html
  • Done!

Custom data format

The file data/data.js defines a single JavaScript object named data that represents your family tree. The structure is as follows:

  • start: The ID of the person who should be the starting point of the family tree. Only this person will be visible, initially. Further family members become visible when clicking on it.
  • persons: An object where each key is a unique person ID, and each value is an object with metadata about that person. It is recommended to at least add name, birthyear, birthplace, deathyear and deathplace, as these information are shown in the tooltip by default.
  • unions: An object where each key is a unique union ID, and each value is an object with metadata about the union. The object may be empty.
  • links: An array of pairs, each representing a connection (edge) between a person and a union. This list will be used to construct the tree.
data = {
    "start":"p2",
    "persons": {
        "p1": { "name": "Adam", "birthyear": 1900, "deathyear": 1980, "birthplace": "Alberta", "deathplace":"Austin", "other": "enter anything here" },
        "p2": { "name": "Berta", "birthyear": 1901, "deathyear": 1985, "birthplace": "Berlin", "deathplace": "Bern" },
        "p3": { "name": "Charlene", "birthyear": 1930, "deathyear": 2010, "birthplace": "Château", "deathplace": "Cuxhaven" },
        //...
    },
    "unions": {
        "u1": { },
        "u2": { "foo": "bar" },
        //...
    },
    "links": [
        ["p1", "u1"],
        ["p2", "u1"],
        ["u1", "p3"],
        //...
    ]
}

License

GPL-3.0