a2b699daf6
Summary: Currently calling native methods on internal react native components throw a warning. I believe this is problematic because _users_ aren't calling native methods on internal components, the _component_ is making the call. So for instance, if I unmount a component that has a form with a few uses of `TextInput`, which is a perfectly valid test case, my test output will be full of warnings that I can't call `.blur()` in the test renderer environment. That's very misleading, because I didn't, the internal component did. In fact, as far as I can tell, there's not really even anything I can do to stop that call or use the output from it, its all internal. `TextInput` is a black box, and 99% of users writing tests probably won't even know it calls `.blur()` under the hood on unmount. I want to change these to `jest.fn()` because I think this eliminates a lot of chatter in test output, but also doesn't send users down a rabbit hole of trying to find workarounds that may involve filtering console output, which could potentially lead them to inadvertently filter out real warnings that they should see. So I'm willing to change the implementation of how I did this, but I don't think its right to warn users that they called a native method when they didn't. If they build a component that calls these methods, I believe it's on them to do something similar to this, and maybe we can make this exposed as a helper that can be used for third party component mocks? [General] [Changes] - Changed MockNativeMethods for core components to `jest.fn()` instead of function that warns about calling native methods. Pull Request resolved: https://github.com/facebook/react-native/pull/24337 Differential Revision: D14822126 Pulled By: cpojer fbshipit-source-id: 2199b8c8da8e289d38823bdcd2c43c82f3f635c9
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 own 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.
Contents
- Requirements
- Building your first React Native app
- Documentation
- Upgrading
- How to Contribute
- Code of Conduct
- License
📋 Requirements
React Native apps may target iOS 9.0 and Android 4.1 (API 16) 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 the React Native Community, @react-native-community/react-native-releases.
👏 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 bugfixes 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.