unstated-props

A higher-order component that enables access to your unstated containers from component props. No need to set up a Provider or Subscribe wrappers.

👋 Hi there!

unstated-props is an abstraction layer on top of unstated by @jamiebuilds: https://github.com/jamiebuilds/unstated

This is a higher-order component that enables access to your unstated containers from component props. No need to set up a Provider or clunky Subscribe wrappers. This one is a humble attempt to make a masterpiece like unstated even better. ✨

🐣 < 990 bytes when used directly in the browser ⚛️ React / preact compatible (thanks to preact-compat)

Installation

To install the stable version:

npm install --save unstated-props

This assumes you are using npm as your package manager.

Usage

Since unstated-props is an extension on top of unstated, we create Containers as we would normally do. It's recommended to put all of your containers into a single folder. Your application structure would look similar to the following:

src/
  app.jsx
  components/
    Button.jsx
    Menu.jsx
    ...
  containers/
    PlaylistContainer.js
    SettingsContainer.js
    ...
    index.js

Step 1. Put unstated containers into "containers" folder

Your containers are the original unstated containers:

// containers/PlaylistContainer.js
// A good old unstated Container, simple and easy to read.

import { Container } from 'unstated';

class PlaylistContainer extends Container {
  state = { shuffleMode: false };

  shuffle = async () => {
    await this.setState({ shuffleMode: true });
    console.log(this.state.shuffleMode); // true
  };
}

export default PlaylistContainer;

Step 2. Create index.js in the "containers" folder

Then you need to create the index.js file in your containers/ folder. This is a place where you import unstated-props. You can organize it in a way similar to this:

// containers/index.js
// The major trick happens here.

import { connect } from 'unstated-props';
import PlaylistContainer from './PlaylistContainer';
import SettingsContainer from './SettingsContainer';

// "playlist" and "settings" will become available
// through "this.props.containers" in your components
export default connect({
  playlist: PlaylistContainer,
  settings: SettingsContainer
});

Step 3. Set up the root component

Let's say that our demo app has the core component named App. This is the root of the whole thing.

We wrap it with a root flag:

// Root component "src/app.jsx".
// TLDR: don't forget about the root flag! 😉

import React from 'react';
import withContainers from './containers';

const App = () => (
  <div>
    Many different things will be added here.
  </div>
)

export default withContainers(App, { root: true })

Step 4. Use containers where needed

Now we can access containers from our components. It's really easy and the end result looks great:

// components/Menu.jsx

import React from 'react';
import withContainers from '../containers';

const Menu = ({ containers: { playlist }}) => (
  <button onClick={()=> { playlist.shuffle() }}>
    Shuffle mode: {playlist.state.shuffleMode}
  </button>
)

export default withContainers(Menu);

That's it. Enjoy! ❤️

Feel free to star this repo and follow me on Twitter:

Related

• unstated - State so simple, it goes without saying
• unstated-debug - Debug your Unstated containers with ease

MIT License, 2019. Max Makarochkin