رؤى - Software Development - # Expo SDK Updates

Expo SDK 52 Beta: Embracing the New Architecture and Introducing Key Features

Q: How will the transition to the New Architecture impact the performance of existing Expo apps in the long term?

The transition to the New Architecture is expected to significantly improve the performance of existing Expo apps in the long term. This is because the New Architecture is built on a more modern and efficient foundation that leverages: Turbo Modules: This allows for faster communication between JavaScript and native modules, reducing overhead and improving responsiveness. JSI (JavaScript Interface): This enables direct access to JavaScript objects from native code, eliminating the need for serialization and deserialization, further boosting performance. React Native's modern rendering pipeline: This results in smoother animations and transitions, enhancing the overall user experience. While there might be some initial migration effort required, the long-term benefits of improved performance, maintainability, and access to the latest React Native features outweigh the short-term costs. Expo is committed to supporting developers throughout this transition and providing resources to make the process as smooth as possible.

Q: Could the increasing reliance on web technologies within Expo, as evidenced by DOM Components, lead to potential performance trade-offs compared to fully native solutions?

While DOM Components offer a convenient way to integrate web technologies and leverage existing web development skills, their use could potentially lead to performance trade-offs compared to fully native solutions, particularly in performance-sensitive scenarios. This is because: WebView Rendering: DOM Components render within a WebView, which can introduce overhead compared to native UI components, especially for complex layouts or animations. JavaScript Bridge Communication: Communication between the DOM and the native app still relies on the JavaScript bridge, which can become a bottleneck for frequent interactions. However, Expo has made efforts to optimize DOM Component performance, and for many use cases, the convenience they offer outweighs the potential performance impact. It's crucial to carefully consider the use case and weigh the benefits of DOM Components against potential performance implications. For highly interactive or performance-critical components, native solutions might still be preferable.

Q: What are the broader implications of integrating experimental features like React Server Components into a mobile development framework like Expo, and how might this shape the future of mobile app development?

Integrating experimental features like React Server Components (RSCs) into Expo has significant implications for the future of mobile app development: Improved Performance and User Experience: RSCs can potentially lead to faster loading times and smoother user experiences by shifting rendering logic to the server, reducing the amount of work done on the client device. Enhanced Developer Experience: RSCs simplify data fetching and state management, allowing developers to build complex features more efficiently. Blurring the Lines Between Web and Mobile: RSCs further bridge the gap between web and mobile development, enabling code reuse and potentially leading to more isomorphic applications that share logic and UI across platforms. However, integrating RSCs also presents challenges: Server-Side Rendering Complexity: Mobile apps traditionally rely on client-side rendering, and introducing server-side rendering adds complexity to the development and deployment process. Latency and Network Dependency: RSCs introduce a dependence on network connectivity, potentially leading to latency issues for users with slow or unreliable connections. Despite these challenges, the integration of RSCs in Expo signifies a shift towards more powerful and flexible mobile development paradigms. As RSCs mature and best practices emerge, they have the potential to significantly shape the future of mobile app development by enabling richer, more performant, and easier-to-build mobile experiences.

المفاهيم الأساسية

Expo SDK 52 Beta marks a significant step forward with the New Architecture as default, bringing performance enhancements, new libraries, and improved developer experience across iOS and Android.

الملخص

Expo SDK 52 Beta: A Detailed Look at the New Features and Enhancements

This article provides a comprehensive overview of the new features and improvements introduced in Expo SDK 52 Beta.

The New Architecture Takes Center Stage

The New Architecture is now the default for new projects, promoting better development practices and improved performance on iOS and Android.
Expo Go exclusively supports the New Architecture from SDK 52 onwards.
Developers upgrading to SDK 52 are encouraged to update dependencies, run compatibility checks, and review known issues related to the New Architecture.

Key Highlights and Changes Across iOS, Android, and EAS Build

iOS deployment target updated to 15.1, aligning with React Native 0.76.
Android's minSdkVersion and compileSdkVersion bumped to 24 and 35, respectively.
EAS Build's default iOS worker image now utilizes macOS 14.6 and Xcode 16.0.

New and Improved Libraries Enhance Functionality

expo-video reaches stable release, offering a robust alternative to expo-av with features like lock screen controls and Picture-in-Picture support.
expo-audio enters beta with a simplified API for common audio use cases.
expo-file-system/next introduces synchronous read/write operations and stateful file management.
expo-live-photo enables playback of Live Photos on iOS.
expo-image v2 introduces the useImage hook for efficient image preloading.
expo-camera upgraded with Swift Concurrency on iOS for enhanced reliability.

DOM Components Bridge the Gap Between Web and Native

DOM Components simplify the integration of web elements into native apps using a "use dom" directive.
This enables the use of web libraries and facilitates the migration of web projects to native platforms.

Expo CLI Receives Performance Boosts and New Features

Universal Tree Shaking enhances OTA and web performance.
Experimental support for the React Compiler is introduced.
Resolution speed sees a significant improvement, up to 15 times faster.
New flags and enhancements streamline debugging, monorepo handling, and CSS module nesting.
Web asset handling and iOS configuration processes are simplified.

Expo Modules API Improves Type Safety and Memory Management

Enhanced SharedRef support improves type validation between packages.
Improved SharedObject support enhances memory management for large native data objects.
Support for CMTime (iOS) and Duration (Android) simplifies time-based media integration.
Customizable root view on iOS and the OnUserLeavesActivity event on Android provide greater control over app behavior.
Simplified event APIs and a C++ EventEmitter enhance event handling.
Easier integration of third-party AARs and support for type-safe web modules further enhance the API.

Expo Router Introduces React Server Components Preview and Other Enhancements

An early preview of React Server Components is introduced for experimentation.
Support for React Navigation v7 RC is integrated.
A new headless component simplifies custom tab development for the web.
Legacy Subscription API and Sitemap Config Option provide backward compatibility and customization options.

Notable Library Updates and Deprecations

expo-video becomes the recommended video API, deprecating expo-av.
Expo Go no longer supports JSC; Hermes is now mandatory.
Libraries like expo-camera/legacy, expo-sqlite/legacy, and expo-barcode-scanner are removed.
expo-notifications and react-native-maps will not be supported in Expo Go for Android from SDK 53 onwards.

Conclusion: A Promising Beta Release Paves the Way for the Future of Expo

Expo SDK 52 Beta lays a strong foundation for the final release, encouraging developers to explore the new features, update their projects, and provide valuable feedback to the Expo community.

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زيارة المصدر

medium.com

الإحصائيات

iOS deployment target is now set to 15.1 (from 13.4).
Android’s minSdkVersion and compileSdkVersion have been bumped to 24 and 35, respectively.
Resolution speed in Expo CLI is now up to 15x faster.

اقتباسات

"SDK 52 sets the New Architecture as the default for new projects."
"As of SDK 52, Expo Go will exclusively support the New Architecture."
"DOM Components simplify transitioning from web to native by allowing developers to create DOM components (using  ,  , etc.), add a 'use dom' directive, and import them into React Native components."

الرؤى الأساسية المستخلصة من

What to Expect from Expo SDK 52

by Onix React في medium.com 11-08-2024

https://medium.com/@onix_react/what-to-expect-from-expo-sdk-52-48c28c07db6a

استفسارات أعمق

How will the transition to the New Architecture impact the performance of existing Expo apps in the long term?

The transition to the New Architecture is expected to significantly improve the performance of existing Expo apps in the long term. This is because the New Architecture is built on a more modern and efficient foundation that leverages:

Turbo Modules: This allows for faster communication between JavaScript and native modules, reducing overhead and improving responsiveness.
JSI (JavaScript Interface): This enables direct access to JavaScript objects from native code, eliminating the need for serialization and deserialization, further boosting performance.
React Native's modern rendering pipeline: This results in smoother animations and transitions, enhancing the overall user experience.
While there might be some initial migration effort required, the long-term benefits of improved performance, maintainability, and access to the latest React Native features outweigh the short-term costs. Expo is committed to supporting developers throughout this transition and providing resources to make the process as smooth as possible.

Could the increasing reliance on web technologies within Expo, as evidenced by DOM Components, lead to potential performance trade-offs compared to fully native solutions?

While DOM Components offer a convenient way to integrate web technologies and leverage existing web development skills, their use could potentially lead to performance trade-offs compared to fully native solutions, particularly in performance-sensitive scenarios. This is because:

WebView Rendering: DOM Components render within a WebView, which can introduce overhead compared to native UI components, especially for complex layouts or animations.
JavaScript Bridge Communication: Communication between the DOM and the native app still relies on the JavaScript bridge, which can become a bottleneck for frequent interactions.
However, Expo has made efforts to optimize DOM Component performance, and for many use cases, the convenience they offer outweighs the potential performance impact. It's crucial to carefully consider the use case and weigh the benefits of DOM Components against potential performance implications. For highly interactive or performance-critical components, native solutions might still be preferable.

What are the broader implications of integrating experimental features like React Server Components into a mobile development framework like Expo, and how might this shape the future of mobile app development?

Integrating experimental features like React Server Components (RSCs) into Expo has significant implications for the future of mobile app development:

Improved Performance and User Experience: RSCs can potentially lead to faster loading times and smoother user experiences by shifting rendering logic to the server, reducing the amount of work done on the client device.
Enhanced Developer Experience: RSCs simplify data fetching and state management, allowing developers to build complex features more efficiently.
Blurring the Lines Between Web and Mobile: RSCs further bridge the gap between web and mobile development, enabling code reuse and potentially leading to more isomorphic applications that share logic and UI across platforms.
However, integrating RSCs also presents challenges:

Server-Side Rendering Complexity: Mobile apps traditionally rely on client-side rendering, and introducing server-side rendering adds complexity to the development and deployment process.
Latency and Network Dependency: RSCs introduce a dependence on network connectivity, potentially leading to latency issues for users with slow or unreliable connections.
Despite these challenges, the integration of RSCs in Expo signifies a shift towards more powerful and flexible mobile development paradigms. As RSCs mature and best practices emerge, they have the potential to significantly shape the future of mobile app development by enabling richer, more performant, and easier-to-build mobile experiences.