DEV Community: Odukwe Precious Chiemeka

Introduction to Stencil.js

Odukwe Precious Chiemeka — Fri, 24 Mar 2023 15:41:08 +0000

Stencil.js is a web component compiler built by the Ionic framework team. It allows developers to create reusable web components. Stencil.js takes the best features of modern front-end frameworks and compiles them into standalone, framework-independent components.

These components can be used in JavaScript frameworks such as React and Angular or without frameworks. This article provides information on how to get started with using Stencil.js.

Why Use Stencil.js

There are several benefits to utilizing stencil.js. One of the main advantages of Stencil.js is that it is simple and easy to learn since it has a simple and intuitive syntax that makes it easy for developers to get started.

Stencil.js allows developers to create reusable components that can be used across multiple projects, saving time and effort in the development process. Stencil.js components can be used in various javascript frameworks like React.

Stencil.js also provides advanced features, such as asynchronous rendering, lazy loading, and optimized bundling out-of-the-box. This makes it an excellent choice for building high-performance web applications.

How Does Stencil.js Work?

Stencil.js uses a component-based architecture, meaning that developers define UI components as separate, reusable pieces of code. These components can be used together to build a complete web application.

Stencil.js uses TypeScript, a statically typed language, to provide strong typing and improved code readability. Stencil also uses JSX and CSS to create high-quality components.

Stencil.js supports modern JavaScript features, such as async/await, and can be easily integrated with other libraries and frameworks.

Getting Started With Stencil.js

To start using Stencil.js, you must install the Stencil CLI and create a new project. The CLI provides a simple command-line interface for building Stencil.js projects.

To install the CLI, run the following command in your project’s directory on the terminal:

npm init stencil

While running the command, a prompt will display on your screen with options displaying the types of projects:

? Select a starter project.

Starters marked as [community] are developed by the Stencil Community,
rather than Ionic. For more information on the Stencil Community, please see
https://github.com/stencil-community » - Use arrow-keys. Return to submit.
>   component                Collection of web components that can be used anywhere
    app [community]          Minimal starter for building a Stencil app or website
    ionic-pwa [community]    Ionic PWA starter with tabs layout and routes

Based on the option you select, you can create reusable web components or a complete stencil.js application/website.

After selecting the type of project you wish to build, you give the project a name:

√ Project name ...stencil-project
? Confirm? » (Y/n)

After you confirm your choice, the CLI will create a stencil.js project with the project name you specified in the project’s directory. Then, change your directory to your project’s directory and install your required dependencies.

To install the dependencies, run the following command:

npm install

Once you have created a new project, you can start writing components.

Creating Your First Component

To create a stencil.js component, you create a new component folder within the src/components directory. Within that folder, generate your .tsx file. You create a .tsx file because stencil uses typescript and JSX to develop components.

You will create your stencil.js component in the .tsx file:

import { Component, h } from "@stencil/core";

@Component({
    tag: 'my-component',
})

export class MyComponent{
  render() {
    return (
      <div>This is my first component</div>
    )
  }
}

In the code blocks above, you import the Component and h symbols from the @stencil/core module. The Component is a decorator used to define stencil components, and h is a utility function that creates virtual DOM elements.

The component definition uses h to return a virtual div element with the text content "This is my first component.” The component is defined using the @Component decorator.

The @Component decorator allows you to specify the component's tag name and any other component configuration options. The class, MyComponent exports the component definition.

The render function returns JSX, which will render the component in the browser. After creating your component, you render it in your HTML file.

Like so:

<!DOCTYPE html>
<html dir="ltr" lang="en">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=5.0" />
    <title>Stencil Project</title>
  </head>
  <body>
    <my-component></my-component>
  </body>
</html>

Conclusion

Stencil.js is a powerful and flexible tool for building reusable UI components for the web. It provides a simple, easy-to-learn API and advanced features such as asynchronous rendering and lazy loading. Whether you are a seasoned front-end developer or just starting, Stencil.js is an excellent choice for building high-performance web applications.

How To Handle Data Fetching in Next.js Using SWR

Odukwe Precious Chiemeka — Tue, 14 Feb 2023 10:38:28 +0000

Handling data fetching in Next.js can be tricky, but using the SWR aka (stale-while-revalidate) library makes it much more manageable. SWR is a lightweight library that allows you to handle data fetching and caching in your Next.js application efficiently.

SWR offers many critical features, such as its ability to revalidate data automatically, caching, etc. This article provides information on how to set up and integrate the SWR library in your Next.js project.

Installing SWR

To use the SWR library in your Next.js application, you will first need to install the library by running the following command in your terminal:

npm install swr

If you are using yarn, run this command:

yarn add swr

Next, you import the useSWR hook to easily fetch data from your API. The useSWR hook is a hook for handling data fetching and caching. The useSWR hook takes a key (URL or identifier) as an input and returns an object that contains the data fetched, error, and loading state.

To use the useSWR hook, you must create a fetcher function containing the fetch request.

For example:

const fetcher = async (url) => {
  const response = await fetch('https://api.example.com/data');
  const data = await response.json();
  return data;
}

After creating the fetcher function, you use it in the useSWR hook:

import useSWR from 'swr'

const fetcher = async (url) => {
  const response = await fetch('https://api.example.com/data');
  const data = await response.json();
  return data;
}

export default function Home() {
  const { data, error, isLoading } = useSWR('https://api.example.com/data', fetcher)

  if (error) return <div>Failed to load</div>
    if (isLoading) return <div>Loading...</div>

    return (
        <div>{data.title}</div>
    )
}

In the code block above, the useSWR hook returns an object with two properties: data, error, and isLoading. If there is an error fetching the data, it returns the message "Failed to load.” If the data is not yet loaded, it returns the message "Loading...".

You can also pass a configuration object as the second argument to the useSWR hook. This object allows you to customize how SWR handles data fetching and caching.

Handling Automatic Revalidation

One of the essential features of the SWR library is its ability to revalidate stale data automatically. The revalidateOnFocus, refreshInterval, and revalidatOnReconnect properties are responsible for this ability. The revalidateOnFocus ensures that when a user re-focus on your web page or switches between tabs, the SWR library will make another fetch request to the API.

By default, the revalidateOnFocus feature is enabled. To turn it off, you set the revalidateOnFocus property to false.

Like so:

const { data, error, isLoading } = useSWR('https://api.example.com/data', fetcher, 
{ revalidateOnFocus: false }
)

The revalidateOnReconnect option ensures that SWR revalidates the data whenever a user regains connection to the internet after having previously lost it. This is very useful in certain situations, but in cases where it is unnecessary, you can disable it.

To disable it, you set the revalidateOnReconnect property to false:

const { data, error, isLoading } = useSWR('https://api.example.com/data', fetcher, 
    { revalidateOnReconnect: false }
)

You can determine how often the data is fetched from the API using the refreshInterval property. The refreshInterval property is a time interval in milliseconds that determines how often your data is fetched from an API. The default value is 0.

Setting the refreshInterval to a positive value ensures that the data will be re-fetched at the specified interval.

Like so:

const { data, error, isLoading } = useSWR('https://api.example.com/data', fetcher, 
    { refreshInterval: 5000 }
)

In cases where the data you are fetching from the API remains static, revalidating it won't produce any changes. In such cases, the automatic revalidation feature of the SWR library is unnecessary; it will be better to disable it. To disable the automatic revalidation feature, you set the revalidateOnFocus and revalidateOnReconnect properties to false and leave the refreshInterval at 0.

Another method of disabling automatic revalidation is to use the useSWRImmutable hook in place of the regular useSWR hook to fetch data. The useSWRImutable hook is identical to the useSWR hook but offers an efficient way to handle immutable data. It uses the useSWR hook internally to fetch and revalidate data and ensures that the data remains unchanged between renders.

For example:

import useSWRImmutable from 'swr/immutable'

const { data, error, isLoading } = useSWRImmutable('https://api.example.com/data', fetcher)

Conclusion

SWR is an excellent library for data fetching and caching in your Next.js application. It's easy to use, customizable, and offers features like stale-while-revalidate and automatic revalidation, making it an excellent choice for any Next.js application that needs to fetch data from an API. This article will help you integrate the SWR into your next Next.js project.

How To Create Custom Alerts in React Using React-Notifications-Component

Odukwe Precious Chiemeka — Fri, 10 Feb 2023 08:51:31 +0000

Alert messages are pop-up messages that display information to users. Alert messages convey critical information to users within a web application. This article provides information on creating custom alert messages in your React application using the react-notifications-component library.

The react-notifications-component library is a lightweight, flexible library that allows you to create customizable notification messages within your React application. It has a simple API and can be easily integrated into any React project.

Installing React-Notifications-Component

To install react-notifications-component, open your npm terminal window and enter the following command:

npm install react-notifications-component

This will install the react-notifications-component library and all of its dependencies.

Setting Up React-Notification-Component

To use the react-notification-component library, you import the ReactNotification element and the corresponding theme CSS file into your app component. This will allow you to utilize the various features and functionality provided by the library.

For example:

import { ReactNotifications } from "react-notification-component";
import "react-notifications-component/dist/theme.css";

function App() {
    return (
        <>
            <ReactNotifications />
        </>
    )
}

To start creating notifications, import the Store module into your desired component and use the Store.addNotification() method:

import React from "react";
import { Store } from "react-notifications-component";

function Page() {

    const notification = () => Store.addNotification({
        title: "Wonderful!",
        message: "Welcome!!!",
        type: "success",
        insert: "top",
        container: "top-right",
        animationIn: ["animate__animated", "animate__fadeIn"],
        animationOut: ["animate__animated", "animate__fadeOut"],
        dismiss: {
          duration: 5000,
          onScreen: true
        }
      });

    return (
        <div>   
            <button onClick={notification}>Click Me!!</button>
        </div>
    )
}

export default Page;

In the code block above, clicking the button will cause an alert notification with the message “Welcome” to display on the screen.

Understanding the Properties of a Notification Object

A notification object contains certain properties that will confuse a new user. A typical notification object will look like this:

const notification = {
    title: "Wonderful!",
   message: "Welcome!!!",
   type: "success",
   insert: "top",
   container: "top-right",
   animationIn: ["animate__animated", "animate__fadeIn"],
   animationOut: ["animate__animated", "animate__fadeOut"],
   dismiss: {
      duration: 5000,
      onScreen: true
   }
}

The message property contains the message displayed on the screen. The type property contains the type of notification. There are five types of notifications: danger, default, success, info, and warning. The color styling of your notification will vary based on the type of notification; this is to help the user understand what has occurred without having to read the message.

The animationIn and animationOut properties are used for animating your notifications entrances and exits. The animationIn and animationOut properties are arrays of CSS classes for controlling your notification’s entrance and exit animations.

Positioning Your Notifications Using the Insert and Container Properties

The insert property of the notification object determines where the notification will be inserted in the container. It takes in the top and bottom values. By setting the insert prop to the top, the notification will be inserted at the top of the container. If it is set to the bottom, the notification is inserted at the bottom of the container.

The container property determines the actual position of the notification. It takes in seven values top-right, top-left, top-center, center, bottom-right, bottom-left, and bottom-center.

For example:

Store.addNotification({
  ...notification,
    insert: 'top',
  container: 'top-right'
})

In the code block above, the notification will display at the top right side of the screen.

Understanding the Dismiss Property of the Notification Object

The dismiss property determines how a notification will be rejected. It is an object containing various properties such as duration, onScreen, and pauseOnHover.

The duration property determines how long the notification will display before closing. It takes in numbers in milliseconds.

For example:

Store.addNotification({
  ...notification,
    dismiss: {
        duration: 3000,
    },
})

The notification above will only display for 3 seconds. To ensure that your notification does not dismiss automatically, you set the duration value to 0. When the duration value is set to 0, the user must click on the notification to close it.

The onScreen property takes in a boolean value. If the onScreen value is true, the notification will display a bar informing the user of how much time the notification has left. If the onScreen value is false, the bar will not display.

Like so:

Store.addNotification({
  ...notification,
    dismiss: {
        onScreen: false,
    },
})

The pauseOnHover property is used to modify the notification’s automatic dismissal behavior. It takes in a boolean value. By setting the pauseOnHover value to true, the user will be able to stop the notification from closing automatically by hovering over the notification. By setting the pauseOnHover value to false, the user cannot prevent the notification from closing automatically.

For example:

Store.addNotification({
  ...notification,
    dismiss: {
        duration: 3000,
        pauseOnHover: true,
    },
})

Customizing Your Notifications

You can customize your notifications to your satisfaction. To customize your notification with your CSS styles, use a React component as a notification and style it.

To use a React component as a notification, you use the content property of the notification object.

For example:

import MyNotification from "./MyNotification";

const notification = () => {
    Store.addNotification({
        content: MyNotification,
        container: 'bottom-right',
      animationIn: ["animate__animated", "animate__fadeIn"],
    animationOut: ["animate__animated", "animate__fadeOut"],
      dismiss: {
        duration: 3000
      },
    })
}

function App() {
    return (
        <div>
            <button onClick={notification}>Click<button>
        </div>
    )
}

In the code block above, you imported the already created React component MyNotification and passed it as the content property value.

Conclusion

The react-notifications-component library is a simple and efficient way to add notifications to your application. With the react-notifications-component, you can easily create and customize alerts that specific events or user interactions can trigger. This article covered only a few features, excluding animation options, touch gestures, etc. Still, with the information provided, you can effectively start using the react-notifications-component library.

How To Handle State Management in Your React Application Using Redux

Odukwe Precious Chiemeka — Tue, 07 Feb 2023 20:14:14 +0000

State management is an essential aspect of any React application, as it determines how the different components of the app interact with each other and with the data they display. When developing large React apps, state management can be difficult and time-consuming, but libraries are available to help you handle your state management more effectively. One of these libraries is Redux.

Redux is a library that helps organize and manage the state of a React app in a centralized and predictable way. Redux provides a centralized store for managing the state of a React application. The store holds the application's state and allows components to access and update it. This article provides information to help you handle state management effectively using Redux.

Setting Up Redux in Your Application

To use redux in a React application, you must first install the library by running the following command in your project’s directory on the terminal:

npm install redux

Alternatively, you run this command if you are using yarn

yarn add redux

After installing redux, you install the react-redux library. The react-redux library is a library that binds React and Redux. It allows developers to use the Redux store and its functionality in a React application. The react-redux library makes it easier to connect React components to the Redux store and manage the application's state.

To install react-redux, run the following command:

npm install react-redux

Run this command, if you are making use of yarn

yarn add react-redux

Creating a Store Using the createStore Function

After installing the redux library, you need to create a store. A store holds the state of your application and allows the components to access and update it. You make the store using the createStore function of the redux library. The createStore function takes in three arguments, two are optional, and one is not. The two optional arguments are the initial state and an enhancer, and the non-optional argument is a reducer function.

A reducer function is a function that takes the current state of the application and returns the new state. The reducer updates the application’s state based on the dispatched actions. A reducer function takes two arguments state and action. The state argument is the current state of the application, and the action argument is an object that describes the action that occurred, including the type of the action.

An enhancer is a higher-order function that allows you to add functionality to the store, such as middleware for handling async actions or logging. A typical example of an enhancer is middleware. A middleware is a function that takes the store.dispatch method as an argument and returns a new function that can be used to dispatch actions. Examples of enhancers are the redux-thunk middleware, redux-logger, redux-devtools-extension, etc.

import { createStore } from 'redux';

const initialState = {
  counter: 0
};

function reducer(state = initialState, action) {
  switch (action.type) {
    case 'INCREMENT':
      return {
        counter: state.counter + 1
      };
    case 'DECREMENT':
      return {
        counter: state.counter - 1
      };
    default:
      return state;
  }
}

const store = createStore(reducer, intialState);

export default store;

In the code block above, you import the createStore function from the redux library and use it to create a store. The initialState is an object containing the counter property. The state argument of the reducer function is set to initialState by default.

The reducer function uses a switch statement to determine what to do based on the value of the action.type property. If the value of action.type is 'INCREMENT', the function returns a new object with the counter property set to the current value of the counter plus 1. If the value of action.type is 'DECREMENT,’ the function returns a new object with the counter property set to the current value of the counter minus 1.

To create actions, you will create a function mapDispatchToProps that takes the dispatch method as an argument. Then using the dispatch method, you will dispatch actions to the store.

For example:

export function mapDispatchToProps(dispatch) {
 return {
    increment: () => dispatch({type: 'INCREMENT'}),
    decrement: () => dispatch({type: 'DECREMENT'})
 }       
}

The mapDispatchToProps function returns an object with two properties, increment, and decrement, each of which is a function that dispatches an action to the store. Calling the increment function will dispatch an action with the type 'INCREMENT' to the store. Calling the decrement function will dispatch an action with the type ‘DECREMENT’ to the store.

Connecting Your Component to the Redux Store Using the Connect Function

To connect a component to the store and access the state, you use the connect function from the react-redux library. The connect function takes two arguments: a function that maps the store's state to the props of the component and an object that maps action creators to the props of the component.

For example:

import { connect } from 'react-redux';
import { mapDispatchToProps } from './actions';

function Counter(props) {
  return (
    <div>
      <h1>{props.counter}</h1>
      <button onClick={props.increment}>Increment</button>
      <button onClick={props.decrement}>Decrement</button>
    </div>
  );
}

function mapStateToProps(state) {
  return {
    counter: state.counter
  };
}

export default connect(mapStateToProps, mapDispatchToProps)(Counter);

The connect function takes two arguments: the mapStateToProps function that maps the store's state to the props of the component and the mapDispatchToProps function that returns an object that maps action creators to the props of the component. The component is then wrapped in a higher-order component (HOC) that handles the store interaction, and the resulting HOC component is returned. The component can access the state and action it needs from the store via its props.

Now you have created a store and connected your component to the store. However, for your store to be accessible to all your React components, you must utilize the provider component from the react-redux library.

To ensure your store is available throughout your application, you import the provider component from the react-redux library into your app component. The provider component takes the store as a prop and makes it available to all child components. To ensure your entire application has access to the store, you wrap all your components within the provider component.

Like so:

import { Provider } from 'react-redux';
import store from './store';
import Counter from './counter';

function App() {
  return (
    <Provider store={store}>
      <Counter />
    </Provider>
  );
}

Handling Asynchronous Operations Using Redux-Thunk Middleware

The redux-thunk middleware is a middleware for Redux that allows you to write action creators that return a function instead of an action object. In a Redux application, action creators return an action object with a type and an optional payload property. These action objects are dispatched to the store and passed to the reducer function, which updates the application’s state.

However, in some cases, you may need to perform async operations, such as making an API call, before dispatching an action. In these cases, you use redux-thunk to write action creators that return a function instead of an action object. This function can then perform the async operation and dispatch the action.

Installing and Setting Up Redux-Thunk

To use the redux-thunk middleware, you need to install it in your application. To install the middleware, run the following command in your project’s directory on the terminal:

npm install redux-thunk

After installing, you import the thunk function from the middleware and pass it as an argument to the applyMiddleware function of the redux library. The applyMiddleware function is a function from the redux library that allows you to apply middleware to a Redux store.

Like so:

import { createStore, applyMiddleware } from 'redux';
import thunk from 'redux-thunk';
import { reducer } from './reducer';

const middleware = [thunk]; 

const store = createStore(reducer, applyMiddleware(...middleware));

export default store;

In the code block above, the createStore function is invoked with the reducer function and the applyMiddleware function. The applyMiddleware function can take multiple middlewares as arguments.

After creating the store, you create your reducer and actions:

export function fetchData() {
  return function (dispatch) {
        fetch('https://jsonplaceholder.typicode.com/posts')
    .then( (response) => response.json() )
    .then( (data) => dispatch({
        type: 'FETCH_POSTS',
        payload: data
    }) )
    }
}

You created an action called fetchData that, when called, dispatches an action of type FETCH_POSTS with the payload of the data returned by the API.

Now, after creating your action, you proceed to create your reducer function:

const initialState = {
  data: [],
};

export function reducer(state = initialState, action) {
  switch (action.type) {
    case 'FETCH_POSTS':
      return {
        data: action.payload,
      };
    default:
      return state;
  }
}

In the code block above, the initialState is an object holding a single property, data. The function uses the switch statement to check the type property of the action object.

In this case, the only action type handled is FETCH_POSTS. If the action's type is FETCH_POSTS, it will return a new state object with the data property set to the action’s payload. The action’s payload is the data that was fetched.

After creating your store, you connect your component to the store.

Like so:

import React from 'react';
import { connect } from 'react-redux';
import { fetchData } from './actions';

function Home(props) {

    React.useEffect( props.fetchData, [] );

    return(
        { props.data.map( (item) => ( <p key={item.id}>{item.body}</p> )) }
    )
}

const mapStateToProps = (state) => ({
    data: state.data
})

export default connect( mapStateToProps, { fetchData })(Home);

Conclusion

Redux is a powerful library that can help you handle state management in your React application. By using a centralized store, actions, and reducers, you can effectively manage the state of your application. By connecting your React components to the store using the react-redux library, you can easily access the state and dispatch actions from within your components. The middleware redux-thunk help in handling the async flow of the actions.

With the help of this article, you should now have a good understanding of how to set up and use Redux in your React application and how it can help you handle state management in a more efficient and manageable way.

How to Handle State Management in Your React Application Using Zustand

Odukwe Precious Chiemeka — Thu, 02 Feb 2023 08:20:45 +0000

State management is a fundamental aspect of building any React application. It is the storing and manipulating of the data used to render a web application's components. When working on a large project, state management can quickly become cumbersome and time-consuming. For this reason, it is preferable to use libraries designed to simplify state management.

Zustand is a lightweight library that provides a fast and scalable solution to state management. Zustand uses hooks to manage state and doesn’t require much boilerplate code. This article will provide information on handling state management in a React application using zustand.

Setting Up Zustand

To make use of zustand, you first have to install it; you install it by running the following command on your project’s terminal:

npm install zustand

After installing the library, you create a store. A store holds all the states and their functions used in your project. You create a store using the create function from the zustand library.

Like so:

import { create } from 'zustand';

const useStore = create( set => ({
    count: 0,
}))

export default useStore;

The create method takes a callback function as its argument. The callback function is used to define the initial state of the store. In this case, the initial state of the store is an object with a single property called count, which is set to 0. The useStore function is a hook that can be used anywhere in your application to access the store.

Accessing the Store

To get access to the states stored in the store. You first import the useStore hook into the required component and then bind your state values to your variables.

For example:

import React from 'react';
import useStore from './store';

function App() {

    const count = useStore( state => state.count ); 

    return (
        <p>{count}</p>
    )
}

After importing the useStore hook, you bind your state value count to the variable count. Rendering your application will cause the number 0 to display on your screen.

Updating your state using the set function

You can change the value of your state by modifying the store. To do this, you will create two properties, an addCount, and a subtractCount property, and add them to the store. These properties are functions that can be used to update your state values.

Like so:

import { create } from 'zustand';

const useStore = create( set => ({
    count: 0,
    addCount: () => set( state => ({ count: state.count + 1}) ),
    subtractCount: () => set( state => ({ count: state.count - 1 }) )
  }))

export default useStore;

The two properties, addCount, and subtractCount, are used to update the count state using the set function provided by the zustand library. The set function is a hook that updates the store state; it allows you to update the state by calling the set() method with a new state object.

The addCount function uses the set function to update the count property by incrementing it by 1. The subtractCount function uses the set function to update the count property by decrementing it by 1.

After creating the store and adding the functions to update the state. You will make the state and the functions available in your components:

import React from 'react';
import useStore from './store';

function App() {

    const[ count, incrementCount, decrementCount] = useStore( state => {
        return [state.count, state.addCount, state.subtractCount]
    }); 

    return (
        <p>{count}</p>
        <button onClick={incrementCount}>increment</button>
        <button onClick={decrementCount}>decrement</button>
    )
}

The state value count and its functions addCount, and subtractCount are destructured and assigned to the variables: count, incrementCount, and decrementCount, respectively.

Accessing the state using the get function

The get function is used to access a current state in the store. This function allows different states to use the same values. You use the get function to access a current state in an action without using the set function.

For example:

import { create } from 'zustand';

const useStore = create( (set, get) => ({
    count: 0,
    action: () => {
            const users = get().count
        }
  }))

export default useStore;

In the code block above, the action function retrieves the value of the count state and assigns it to the users variable.

Working with asynchronous Operations

When working with asynchronous operations, such as fetching data from an API, zustand makes it easy. To work with asynchronous operations, you must complete the fetch requests and set the data from the API to the state using the set function.

For example:

import create from 'zustand';

const useStore = create( set => ({
    post: {},
    fetchPost: async () => {
        const response = await fetch('https://jsonplaceholder.typicode.com/posts');
        set( {post: response.json()} )
    }
}))

export default useStore;

Persisting a State using the persist method

The persist method is a middleware that allows you to persist the state of your store so that it is not lost when the user refreshes the page or closes the browser. The persist middleware persists a state by storing it in the browser's local storage. When the component that uses the store is next rendered, it will read the persisted state from local storage and re-hydrate the store.

To use the persist method, you must first import it from the zustand/middleware:

import { persist } from 'zustand/middleware'
import { create } from 'zustand'

const store = set => ({
    colors: ["red", "blue", "green"],
    addColor: (color) => {
        set( (state) => ({
            colors: [...state.colors, color]
        }) )
    }
})

export default const useStore = create( persist( store, {name: 'paint'}) );

You persisted the store. The local storage key is assigned the name ‘paint’. The store contains a state with two properties: colors, an array of colors, and addColor, a function that adds a new color to the array. Since you persisted the store, you do not lose data when adding new items to the state and refreshing the page.

Conclusion

Zustand is a simple, lightweight, and efficient state management library that you can easily integrate into your React application. With zustand, it's easy to manage the state of your React application in a centralized and efficient way. With the information provided in this article, you should be able to integrate zustand into your next React project.