Скачать или смотреть Resolving React Native Version Mismatch Error

Discover how to fix the `React Native version mismatch` error with practical steps and solutions. Perfect for beginners!
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This video is based on the question https://stackoverflow.com/q/62105478/ asked by the user 'Muhammad Adeel Shoukat' ( https://stackoverflow.com/u/11192313/ ) and on the answer https://stackoverflow.com/a/62282628/ provided by the user 'Muhammad Adeel Shoukat' ( https://stackoverflow.com/u/11192313/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Resolving React Native Version Mismatch Error: A Step-by-Step Guide

If you're venturing into React Native, you may encounter a frustrating error: a version mismatch between the JavaScript and Native versions. This issue can impede your project’s development and leave you feeling stuck, especially if you’re new to the framework. In this guide, we'll explore how to efficiently resolve the React Native version mismatch error, which arises when the JavaScript version is 0.50.4 and the Native version is 0.62.2.

Understanding the Problem

What is a Version Mismatch?

A version mismatch occurs when the versions of JavaScript and Native components of your React Native app are incompatible. Each version of React Native usually requires corresponding versions of dependencies and configurations. If these versions are not aligned, it can lead to build errors and unexpected behavior in your application.

Common Symptoms

You may not only receive error messages but also experience crashes, failing to run commands for Android or iOS, and other complications in your workflow. For example, the error message you might see is similar to this:

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Steps to Resolve the Version Mismatch

After struggling with this problem myself, I've outlined the steps that helped me solve it, which you can easily follow in your project.

Step 1: Remove the Bundled Files

The first step is to delete the index.android.bundle, which is located in the Assets folder under your Android project. This file can sometimes contain stale or outdated code that leads to conflicts in versioning.

Open your project in the file explorer.

Navigate to android/app/src/main/assets/.

Delete index.android.bundle.

Step 2: Rebuild Your Bundles

Next, you'll want to rebuild the bundle files to generate the correct versions for your project.

Open your terminal or command prompt.

Navigate to your project directory using the command:

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Use the following command to bundle your application correctly:

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Note: If your entry point is not App.js, replace it accordingly in the command.

Step 3: Clear Cache (If Necessary)

If the error persists after rebuilding, clearing the Watchman and packager caches can further help in resolving discrepancies between versions.

Run the following command in your terminal:

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This will ensure that Watchman no longer tracks any outdated files and the packager is reset, allowing you to start fresh.

Final Remarks

After executing these steps, your version mismatch error should be resolved, allowing your React Native application to run smoothly. Make sure to perform these actions whenever you encounter similar version listing issues in the future. Keeping your dependencies updated can also help you avoid such issues down the line.

With this guide, we hope to help you navigate the complexities of version management in React Native while fostering a smooth and productive development process. Happy coding!