Native Global state for React

A native global state implementation with react. At least React version 18.2.0 is required.

Lightweight and most efficient implementation for react global state,just using in built react hooks. Compatible with React Native too.

Component renders only if the slice taken(in example s.name) changes.

No external dependencies used.

Very lightweight (605 bytes in size)

Simple usage( no reducers, no actions and no boilerplate code required )

Perfect replacement for Redux and Mobx

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Install

npm i native-state-react

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Usage

1. First, import and Add <Root initial={{/* Initial state */}}/> as a component in the top level.

2. Then, import and use useSelector to get the desired global state slice.

   const [name,setState] = useSelector(s=>s.name);

3. Note:

   • If name not found in global state, it will return undefined.
   • Eventhough name coming from global state, Note that, setState can still update the global state values, not just the name.

4. Update the name like this..

   setState({name:"Will"});

5. Add/update another state property by

   setState({school:{class:"VII"}});

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See example folder for react project example implementation.

Full implementation

Add <Root> in your top component tree (index.js),

import React from 'react';
import ReactDOM from 'react-dom';
//Add import 
import { Root } from 'native-state-react'; 

let store={ 
    name:"Mary",
    school:{class:"V"}
};
ReactDOM.render(
 <React.StrictMode>
  <Root initial={store} /> // 'initial' prop is optional(default will be empty object).
  <App/>
 </React.StrictMode>,
document.getElementById('root'),
)

In your component

import { useSelector } from 'native-state-react';
function App() {
    const [name,setState] = useSelector(s=>s.name);
    return <div>{name}</div>
}

Update name in the state like this

setState({name:"George"});

it just replaces the given name in the existing state, other state values will stay unchanged. The school object in global state will stay unchanged.

Example with state update.

import { useSelector } from 'native-state-react';
function Class() {
    const [name,setState] = useSelector(s=>s.name);
    useEffect(()=>{
        setTimeout(() => {
            setState({name:"George"});
        }, 3000);
     },[]);

    return <div>{name}</div>
}

With Above code, you can see the name gets updated in UI after 3 seconds.