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

count-slowly

v1.0.0

Published

Make numbers go up or down, one at a time

Readme

count-slowly

Usage

const countSlowly = require('count-slowly');

const cs = countSlowly({ stepDuration: 100 });

// Set the initial value
cs.set(1);
// Handle values between your final value
cs.onUpdate((tempValue) => {
  // Handle the temp value
});

// Update value when needed
cs.update(100);

// Skip directly to the new value. Calls onUpdate callback with final value then stops.
cs.hurry();

// Stops the onUpdate callbacks without skipping to new value.
cs.stop();

factory function

Rely on the .update() method to determine the values.

const cs = countSlowly();

Set the starting value straight-away.

const cs = countSlowly({}, 50);

Set a default duration to stay on each step

const cs = countSlowly({ stepDuration: 100 });

Set the default length of time to arrive at the new count

const cs = countSlowly({ totalDuration: 2000 });

.set()

Set an initial integer value. This will call the .onUpdate() callback once if it has been set.

cs.set(1);

.onUpdate()

Set the callback from each integer between the old value and the new value.

cs.onUpdate((tempValue) => {
  console.log(`Called with ${tempValue}`);
});

.update()

Set a new value. This will call the .onUpdate() callback for each integer between the old integer and the new integer according to either the factory function's stepDuration or totalDuration value.

cs.update(100);

Set a new value, calling the .onUpdate() callback every 50ms regardless of the factory function's stepDuration or totalDuration value.

cs.update(100, {
  overrideStepDuration: 50,
});

Set a new value, calling the .onUpdate() callback as often as needed in order to invoke the callback with 100 after 1200ms regardless of the factory function's stepDuration or totalDuration value.

cs.update(100, {
  overrideTotalDuration: 1200,
});

.hurry()

Skip directly to the new value. Calls the .onUpdate() callback with final value then stops.

cs.hurry();

.stop()

Stop the .onUpdate() callbacks without skipping to the new value.

cs.stop();

Examples