npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details


  • User packages



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.


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 🙏

© 2022 – Pkg Stats / Ryan Hefner




visx mock data





The @visx/mock-data package is here to help you test out your graphs.


npm install --save @visx/mock-data


Generators can create simple generic data for you like this:

import Mock from '@visx/mock-data';
const points = Mock.genRandomNormalPoints();


Returns a series of random normal x,y points.


Generates n date values an hour apart from each other starting with the current time.


Mock are essentially a bunch of data dumps that you can use like this:

import Mock from '@visx/mock-data';
// or import { cityTemperature } from '@visx/mock-data';
const data = Mock.cityTemperature;


interface AppleStock {
  date: string;
  close: number;

const appleStock: AppleStock[] = [
  { date: '2007-04-24T07:00:00.000Z', close: 93.24 },


interface BitcoinPrices {
  currency: string;
  prices: BitcoinPrice[];

const bitcoinPrice: BitcoinPrices = {
  currency: 'USD',
  prices: [
    { price: '2486.69', time: '2017-07-03T00:00:00Z' },


const browserUsage: BrowserUsage[] = [
    date: '2015 Jun 15',
    'Google Chrome': '48.09',
    'Internet Explorer': '24.14',
    Firefox: '18.82',
    Safari: '7.46',
    'Microsoft Edge': '0.03',
    Opera: '1.32',
    Mozilla: '0.12',
    'Other/Unknown': '0.01',


interface CityTemperature {
  date: string;
  'New York': string;
  'San Francisco': string;
  Austin: string;

const cityTemperature: CityTemperature[] = [
    date: '20111001',
    'New York': '63.4',
    'San Francisco': '62.7',
    Austin: '72.2',


interface Exoplanets {
  name: string;
  radius: number;
  distance: number | null;

const exoplanets: Exoplanets[] = [
    name: 'Jupiter',
    radius: 10.97,
    distance: 0,


interface GroupDateValue {
  key: string;
  value: string;
  date: string;

const groupDateValue: GroupDateValue[] = [
  { key: 'Group1', value: '37', date: '04/23/12' },


interface LesMiserablesNode {
  id: string;
  group: number;

interface LesMiserablesLink {
  source: string;
  target: string;
  value: number;

interface LesMiserables {
  nodes: LesMiserablesNode[];
  links: LesMiserablesLink[];

const lesMiserables: LesMiserables = {
  nodes: [
    { id: 'Myriel', group: 1 },
  links: [
    { source: 'Napoleon', target: 'Myriel', value: 1 },


interface LetterFrequency {
  letter: string;
  frequency: number;

const letterFrequency: LetterFrequency[] = [
  { letter: 'A', frequency: 0.08167 },


interface Shakespeare {
  id: string;
  parent: string | null;
  size: number | null;

const shakespeare: Shakespeare[] = [
    id: 'Shakespeare',
    parent: null,
    size: 0,

Source For Components