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

@bigcommerce/memoize

v1.0.1

Published

A JavaScript library for memoizing the result of a pure function

Downloads

6,627

Readme

@bigcommerce/memoize

CircleCI

This library can be used to memoize the result of a pure function.

Unlike the default memoize function provided by Lodash, it can be applied to functions that accept multiple non-primitive arguments. It can also be configured to expire its cache after certain number of unique calls. By default, it compares object-based arguments shallowly; but it can be configured to compare arguments strictly or deeply depending on your usage requirement.

Install

You can install this library using npm.

npm install --save @bigcommerce/memoize

Usage

To memoize a function:

function fn(a, b) {
    return { a, b };
}

const memoizedFn = memoize(fn);
const result = memoizedFn({ message: 'hello' }, { message: 'world' });
const result2 = memoizedFn({ message: 'hello' }, { message: 'world' });

expect(result).toBe(result2);

To set a limit on the cache size:

function fn(a, b) {
    return { a, b };
}

const memoizedFn = memoize(fn, { maxSize: 1 });
const result = memoizedFn({ message: 'hello' }, { message: 'world' });

// This call will expire the cache of the previous call because it is called with a different set of arguments
const result2 = memoizedFn({ message: 'hello' }, { message: 'foobar' });
const result3 = memoizedFn({ message: 'hello' }, { message: 'world' });

expect(result3).not.toBe(result);

There is a convenience method for setting the cache size to one:

const memoizedFn = memoizeOne(fn);

To use a different argument comparison function:

const memoizedFn = memoize(fn, { 
    isEqual: (a, b) => a === b,
});

Contribution

To release:

npm run release

To see other available commands:

npm run

License

MIT