Oscar Franco
18c9797ecc
Summary: For a very long time when a promise rejects without an attached catch we get this warning screen without a correct stack trace, only some internal calls to the RN internals. <img src="https://github.com/facebook/react-native/assets/1634213/75aa7615-ee3e-4229-80d6-1744130de6e5" width="200" /> I created [an issue for discussion](https://github.com/react-native-community/discussions-and-proposals/discussions/718) in the react-native-community repo and we figured out it was only a matter of symbolication. While it cannot be done on release without external packages and source maps, at least while developing we can provide a symbolicated stack-trace so developers can better debug the source of rejected promise. I got the stack trace symbolicated and the correct code frame. I'm missing some help trying to display it in the warning view but at the very least I can now correctly show the line of the error and log the codeframe to the console. ## Changelog: <!-- Help reviewers and the release process by writing your own changelog entry. Pick one each for the category and type tags: [GENERAL] [FIXED] - Show correct stack frame on unhandled promise rejections on development mode. For more details, see: https://reactnative.dev/contributing/changelogs-in-pull-requests Pull Request resolved: https://github.com/facebook/react-native/pull/40914 Test Plan: I simply created a throwing function on a dummy app, and checked the output of the console and the warning view: ```ts import React from 'react'; import {SafeAreaView, Text} from 'react-native'; async function throwme() { throw new Error('UNHANDLED'); } function App(): JSX.Element { throwme(); return ( <SafeAreaView> <Text>Throw test</Text> </SafeAreaView> ); } export default App; ``` Here is the output <img src="https://github.com/facebook/react-native/assets/1634213/2c100e4d-618e-4143-8d64-4095e8370f4f" width="200" /> Edit: I got the warning window working properly: <img src="https://github.com/facebook/react-native/assets/1634213/f02a2568-da3e-4daa-8132-e05cbe591737" width="200" /> Reviewed By: yungsters Differential Revision: D50324344 Pulled By: javache fbshipit-source-id: 66850312d444cf1ae5333b493222ae0868d47056
React Native
Learn once, write anywhere:
Build mobile apps with React.
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React Native brings React's declarative UI framework to iOS and Android. With React Native, you use native UI controls and have full access to the native platform.
- Declarative. React makes it painless to create interactive UIs. Declarative views make your code more predictable and easier to debug.
- Component-Based. Build encapsulated components that manage their state, then compose them to make complex UIs.
- Developer Velocity. See local changes in seconds. Changes to JavaScript code can be live reloaded without rebuilding the native app.
- Portability. Reuse code across iOS, Android, and other platforms.
React Native is developed and supported by many companies and individual core contributors. Find out more in our ecosystem overview.
Contents
- Requirements
- Building your first React Native app
- Documentation
- Upgrading
- How to Contribute
- Code of Conduct
- License
📋 Requirements
React Native apps may target iOS 13.4 and Android 5.0 (API 21) or newer. You may use Windows, macOS, or Linux as your development operating system, though building and running iOS apps is limited to macOS. Tools like Expo can be used to work around this.
🎉 Building your first React Native app
Follow the Getting Started guide. The recommended way to install React Native depends on your project. Here you can find short guides for the most common scenarios:
📖 Documentation
The full documentation for React Native can be found on our website.
The React Native documentation discusses components, APIs, and topics that are specific to React Native. For further documentation on the React API that is shared between React Native and React DOM, refer to the React documentation.
The source for the React Native documentation and website is hosted on a separate repo, @facebook/react-native-website.
🚀 Upgrading
Upgrading to new versions of React Native may give you access to more APIs, views, developer tools, and other goodies. See the Upgrading Guide for instructions.
React Native releases are discussed in this discussion repo.
👏 How to Contribute
The main purpose of this repository is to continue evolving React Native core. We want to make contributing to this project as easy and transparent as possible, and we are grateful to the community for contributing bug fixes and improvements. Read below to learn how you can take part in improving React Native.
Code of Conduct
Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please read the full text so that you can understand what actions will and will not be tolerated.
Contributing Guide
Read our Contributing Guide to learn about our development process, how to propose bugfixes and improvements, and how to build and test your changes to React Native.
Open Source Roadmap
You can learn more about our vision for React Native in the Roadmap.
Good First Issues
We have a list of good first issues that contain bugs which have a relatively limited scope. This is a great place to get started, gain experience, and get familiar with our contribution process.
Discussions
Larger discussions and proposals are discussed in @react-native-community/discussions-and-proposals.
📄 License
React Native is MIT licensed, as found in the LICENSE file.
React Native documentation is Creative Commons licensed, as found in the LICENSE-docs file.