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

mutability-helper

v1.0.0

Published

mutate a copy of data with a convenient commands

Downloads

646

Readme

mutability-helper

NPM version Build status Test coverage Downloads

Mutate a piece of data in place leveraging a convenient set of commands. Based on immutability-helper.

import update from 'mutability-helper';

const state1 = ['x'];
update(state1, {$push: ['y']});
// state1 === ['x', 'y']

Overview

Originally, the immutability-helper's selling point was the fact that it didn't mutated the piece of data at all, returning a mutated copy of it to be used instead.

But, sometimes you may want to update a piece of data in place, leveraging those nice and convenient commands from that come from immutability-helper (and they were originally inspired by MongoDB's query language).

That is why this project exists and it uses the same commands API from the original immutability-helper.

update()

update() provides simple syntactic sugar around this pattern to make writing this code easier. This code becomes:

import update from 'immutability-helper';

update(myData, {
  x: {y: {z: {$set: 7}}},
  a: {b: {$push: [9]}}
});

// myData is changed here

An Introduction to Commands

An nice introduction to commands API is available in original immutability-helpers repo, which also covers how to create additional commands.