React 19: What’s New in its Latest Updates and Features?

It’s hard to imagine any single technology that can change the landscape of the entire industry!

But Reactjs has done it! 

Though we have already learned the benefits of ReactJS, it’s time to welcome its latest version, i.e., React 19! It is launched to meet the evolving needs of the mushrooming demands of modern web development. 

Released on April 25, 2024, React 19 is the latest version that comes with a wide range of features which makes it a preferred choice among developers for project development needs. 

But now the question arises- How is it different from its predecessor React 18? What are the features of the latest React 19?

Hold your thoughts for a while, here we’ll discuss everything you need to know about React 19. 

Let’s dive in! 

What is React?

To put it simply, React is an open-source JavaScript framework that helps build single-page applications. Developed and managed by Meta, it can be used with other libraries and frameworks to manage states and facilitate smoother navigation. With infused simplicity, performance, and work efficiency, React has garnered significant attention among developers of all kinds. 

Have no idea about it? Don’t worry, let’s find out! 

• There are nearly 2 billion websites on the internet and out of them more than 1.3 use React. (Source: Citrusbug). 
• In the US, nearly 3,685,454 live websites are built using React. (Source: Citrusbug).
• Popular websites like Facebook, Instagram, and Airbnb used React to build engaging user interfaces. (Source: Citrusbug).

So, that’s the popularity of React! 

And with React 19 in the picture, businesses are going crazy over React app development services to build a solid web app that churns out “tangible results”. 

{Also Read: React Native vs. Swift: What to Choose for Your Mobile App?}

Without further ado, let’s discuss the latest features of React 19! 

Top Features of React 19: What Has Improved So Far?

Let’s take a look at the top features of React 19. 

1. Enhanced Suspense SSR

Also known as server-side rendering, SSR turns out to be a game-changer in the field of web application development. With asynchronous data fetching to server-rendered applications, it will not only enhance the performance of the app but also help improve the overall user experience without jeopardizing the users’ engagement. 

2. Modified TypeScript Features

Another major update that has come into the picture is the enhanced TypeScript which enables professional developers to create robust and efficient code. With modern TypeScript tools and features, React 19 helps streamline the development process which would ultimately minimize errors and enhance code quality. 

3. Concurrent Mode for Unmatched Smoothness

With refined scheduling algorithms, concurrent mode transforms help deliver smooth and uninterrupted smoothness in UI updates. No matter what kind of complex rendering tasks are there, developers can easily and effortlessly troubleshoot issues without compromising the app’s productivity. Furthermore, it would aid professionals in minimizing downtime, as well. 

4. Efficient API Optimization 

One of the major highlights of React 19 is that it allows developers to push the roof and achieve what’s possible in the field of web development. With efficient optimization of API, developers can play with experimental features and profile concurrent mode performance. 

5. Memory Management 

Last but not least, when it comes to improving the performance of the app, React 19 has successfully refined the optimizations which may help optimize the app performance and facilitate memory management. 

Though there are multiple new features in React 19, how could you implement it or upgrade from React 18 to React 19? 

Let’s find out! 

How to Upgrade from React 18 to React 19?

Here is a list of the ways to upgrade from React 18 to React 19 with these simple steps; 

Don’t forget to Check Compatibility 

Before you upgrade from React 18 to React 19, ensure you check whether your packages and third-party libraries are compatible with the latest version of React. Don’t forget to review the official documentation to keep an eye on the compatibility of React. 

Focus on Updating React & React-DOM Packages 

In the next step, you should focus on updating the React and React-DOM packages in your project. Remember that you are planning to upgrade from React 18 to React 19, you cannot overlook the importance of NPM or Yarn. 

Use the following code:

Try to Update the Dependent Package 

Though React 18 used to be a popular framework for web project development, you will now need to upgrade it to React 19. If any of your projects are based on the previous version of React then you need to ensure they are compatible with the new React 19. Make sure you update dependent packages to eliminate potential bugs and errors. 

{Also Read: How to Set Up a React Native Development Environment?}

Check for Deprecated APIs

While migrating from React 18 to React 19, you cannot overlook the importance of checking APIs in React 19 to modify the codebase. If the problem persists then try to replace deprecated APIs to ensure long-term stability. 

Run Tests 

Once you’re done making changes, try to run your project to ensure the upgrade is successful and isn’t prone to potential issues or defects. In case of any fault, try to fix it as soon as possible and ensure the project is working the way you want. 

Performance Optimization 

Since React 19 has come up with multiple enhancements and modifications, it is the right time for you to review your codebase and optimize the performance of the app to boost user experience. 

Launch & Monitor 

After completing the update process and you are assured that your web project is working fine then you can simply deploy it. Once done, you should closely monitor your application to ensure it’s working well and free from any errors and bugs. 

Conclusion

So, there you have it! That’s a wrap to React 19 and its associated features in 2024! It is no secret that the new version of React has come up with the latest features and updates that may help developers build functional and feature-rich SEO-friendly web apps. 

Ready to build a solid web app? If so, what are you waiting for? Simply, look no further than “EitBiz”!

EitBiz is a trusted React web app development Company in the UK that has a proven track record of building and deploying hundreds of web apps using React. Our team of React developers efficiently leverages state-of-the-art technologies, frameworks, libraries, and tools to build robust, feature-rich, productive, and responsive web apps for different industry verticals. Ready to build a solid web app? If so, call EitBiz at +1(812)530-6300 today or drop us an email at info@eitbiz.com to discuss your web project requirements.