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

@watchable/store

v1.0.2

Published

Store with compile-time-immutable state.

Downloads

8

Readme

Minimal watchable state for your app

Install

npm install @watchable/store

# for optional features
npm install @watchable/store-react # React binding
npm install @watchable/store-follow # Business-logic binding
npm install @watchable/store-edit # Immer drafts

Summary

A @watchable/store Store maintains a immutably-typed reference to an (array or object) state with intuitive utilities for wiring up ui components and business logic.

See the Medium article

Import OR Require

import { createStore } from "@watchable/store"; // esm
const { createStore } = require("@watchable/store"); //commonjs

Create a Store (Javascript)

const store = createStore({ counter: 0 });

See below for runtime Immutable state in Typescript!

Track State

In React...

import { useSelected } from "@watchable/store-react";
const counter = useSelected(store, (state) => state.counter);

// get and set keyed property, like React useState
const [counter, setCounter] = useStateProperty(store, "counter");

In pure business logic...

// watching the store
store.watch((state) => console.log(`Counter is ${state.counter}`));

// follow a selector (called back any time the selected value changes)
import { followSelector } from "@watchable/store-follow";
followSelector(
  store,
  (state) => state.counter,
  (counter) => {
    console.log(`Counter is ${counter}`);
  }
);

Read and Write State

Using a draft...

// create the next immutable state by editing a draft
import { edit } from "@watchable/store-edit";
edit(store, (draft) => (draft.counter += 1));

Using pure immutable patterns...

// read state
const state = store.read();

// write state using immutable patterns
store.write({
  ...state,
  counter: state.counter + 1,
});

Create an Immutable Store (Typescript)

import { createStore, type Immutable } from "@watchable/store";

// `Immutable` is recommended to block inadvertent edits of state
type CounterState = Immutable<{
  counter: number;
}>;

const INITIAL_STATE: CounterState = {
  counter: 0,
} as const;

const store = createStore(INITIAL_STATE);

Description

472 gzipped bytes of powerful state-management!

When a new state is passed to store.write(), user interfaces and business logic are notified of changes to state matching their Selectors.

@watchable/store is incredibly simple, lightweight and framework-independent, and therefore suited to manage state within almost any server-side or client-side Typescript or Javascript project.

Read the API Reference, examine the example code below, or browse the source on Github.

Demonstration Apps

The Example Counter Apps offer minimal demonstrations of @watchable/store