Expo Managed or Bare Workflow: Which One Do I Need?

If you're unsure whether to use Expo's Managed or Bare workflow, start by assessing your project's complexity and whether you need custom native code. The Managed workflow simplifies development with a host of built-in libraries, while the Bare workflow gives you the freedom to add native modules, albeit with additional configuration effort.

What is the Expo Managed Workflow?

The Managed workflow is designed for developers who prefer higher-level abstractions. It leverages Expo's powerful CLI and comes with built-in support for common React Native libraries, making setup easier and faster. Expo handles the native build process for you, freeing you from worrying about native code unless you decide to eject.

What is the Bare Workflow?

The Bare workflow allows you to create a React Native app with full access to native APIs. This means you can write custom native modules or integrate third-party SDKs that require native code. Although it offers more flexibility, it requires a solid understanding of both React Native and the underlying iOS/Android ecosystems.

Do I Need to Eject from Expo?

You only need to eject from Expo if your application requires custom native modules or advanced configurations that the Managed workflow cannot accommodate. Ejecting brings your project into bare mode, where you manage the native build configurations yourself. It's a critical step if you plan to integrate libraries like react-native-maps with native dependencies.

What are Expo Limitations with Native Modules?

Expo supports a wide range of libraries, but if you need to use custom native code or libraries not included in the Expo SDK, you'll need to eject. Examples of limitations include:

• Third-party native libraries not supported by the Expo SDK.
• Advanced HTTP request libraries that require lower-level access.
• Custom authentication flows that need complex native integrations.

What are the Benefits of the Managed Workflow?

• Simplicity: No need to set up and maintain native projects.
• Rapid Development: Enjoy an opinionated environment with quick iterations.
• Built-in APIs: Access to device features without extensive setup.
• OTA Updates: Push updates without going through app stores.

What are the Advantages of the Bare Workflow?

• Full Control: Greater flexibility with full access to native projects.
• Custom Native Code: Write custom modules tailored to your app's needs.
• Library Integration: Install libraries that require native code and aren’t supported by the Managed workflow.
• Performance Optimization: Potentially enhance performance by optimizing native components.

What Does Expo Prebuild Explain?

Expo Prebuild generates native projects from your managed workflow. When you eject, Expo uses your project configuration to create ios and android directories with all required native files. It's important to check if any modifications are needed post-prebuild, including paths and dependencies that may not match with native projects.

How Do I Decide Which Workflow to Use?

Deciding on the right workflow depends on your app's needs:

Use the Managed workflow if:

• You are building a standard app without specific native requirements.
• Rapid iterations and prototyping are necessary.

Opt for the Bare workflow if:

• You need advanced customizations.
• You plan to use libraries requiring native code and want to incorporate native modules.

Do I Need to Know Native Development for Expo?

While you can start with React Native and Expo using only JavaScript, you'll eventually likely need some knowledge of native development if you go the Bare workflow route. Understanding how native modules work will help if you encounter issues or need optimizations at the native level.

What Are Common Issues When Ejecting?

• Configuration Errors: Issues such as incorrect dependencies can arise.
• Version Mismatches: Ensure your installed libraries match the versions expected by React Native.
• Path Issues: Ensure your paths in project configuration files correctly point to your libraries.

How Do I Test on a Low-End Android Device?

Testing on lower-end devices helps identify performance issues that may not appear on higher-end hardware. Steps to test:

1. Use a physical device whenever possible.
2. Minimize the number of re-renders by profiling component performance with the React Profiler.
3. Optimize images and assets: Use smaller file sizes and efficient formats.
4. Monitor memory usage to avoid performance degradation.

Choosing between Expo's Managed and Bare workflows is a crucial decision that shapes your app development experience. Remember to evaluate your project's needs carefully, considering whether you might require native capabilities before committing to one workflow over the other. Ready to get started with building your app? Check out Clevens for instant access to premium resources and code prompts that will help you accelerate your workflow.