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

@solid-primitives/map

v0.4.13

Published

The Map & WeakMap data structures as a reactive signals.

Downloads

49,845

Readme

@solid-primitives/map

turborepo size version stage

The reactive versions of Map & WeakMap built-in data structures.

Installation

npm install @solid-primitives/map
# or
yarn add @solid-primitives/map
# or
pnpm add @solid-primitives/map

ReactiveMap and ReactiveWeakMap

A reactive version of Map/WeakMap data structure. All the reads (e.g. get or has) are signals, and all the writes (e.g. delete or set) will cause updates to appropriate signals.

How to use it

Import

import { ReactiveMap } from "@solid-primitives/map";
// or
import { ReactiveWeakMap } from "@solid-primitives/map";

Basic usage

The usage is almost the same as the original Javascript structures.

const userPoints = new ReactiveMap<User, number>();
// reads can be listened to reactively
createEffect(() => {
  userPoints.get(user1); // => T: number | undefined (reactive)
  userPoints.has(user1); // => T: boolean (reactive)
  // ReactiveWeakMap won't have .size or any methods that loop over the values
  userPoints.size; // => T: number (reactive)
});
// apply changes
userPoints.set(user1, 100);
userPoints.delete(user2);
userPoints.set(user1, { foo: "bar" });

Constructor arguments

ReactiveMap's and ReactiveWeakMap's constructor one optional argument that is the initial entries of the map.

const map = new ReactiveMap([
  ["foo", [1, 2, 3]],
  ["bar", [3, 4, 5]],
]);

Values are shallowly wrapped

Treat the values of ReactiveMap and ReactiveMap as individual signals, to cause updates, they have to be set through the .set() method, no mutations.

const map = new ReactiveMap<string, { age: number }>();
map.set("John", { age: 34 });

// this won't cause any updates:
map.get("John").age = 35;

// this will:
map.set("John", { age: 35 });

Changelog

See CHANGELOG.md