The very first step to start development in React-Native is to install the right tools to setup the environment correctly. I’m working on MacOS Catalina and I already have Xcode 11 installed on my machine which is one of the pre-requisites to run the iOS App.
Install the following dependencies for React-Native:
Create a debug configuration (as described in Debugging React Native applications), select Debug in Exponent in the debug drop-down menu, and start debugging Wait while some dependencies are configured - the extension will install Expo Development Library(@expo/xdl) when. React Native 0.62 Released - The Official solution is Flipper 🚀. Flipper is Android & iOS Mobile debugging tools without using debug mode in react native. Since RN 0.62 (See this link), Flipper is initialized with default project. Flipper has a few of plugins for debugging. The plugins include Layout, Network, Shared preferences. The greatest benefit of Flipper is not also many plugins. React Developer Tools is a browser DevTools extension for the open-source React JavaScript library. You will get two new tabs in your Edge DevTools: '⚛️ Components' and '⚛️ Profiler'. The Components tab shows you the root React components that were rendered on the page, as well as the subcomponents that they ended up rendering.
NodeJS: https://nodejs.org/en/download/
The recommended way to install Node is using Homebrew from your Terminal:
Watchman: In react-native, Watchman watches the source code for any changes and rebuilds them.
Install XCode from App Store.
Cocoapods: This is the Dependency Manager for iOS & Mac projects.
This requires you to enter system password.
Install Visual Studio Code for Mac from here. You might face issues on Mac OS Catalina to run VS Code due to Notarization requirements. You can check out this post for more details.
Create the folder inside say your Documents folder on your Mac as below:
Open VS Code and open New Terminal and type the following command to create a new React-Native App:
Come back to the MyApp folder and run the below command to run your App in the iOS simulator:
This will install and launch the App in your iOS simulator. The first time might be very slow. It might be helpful to launch your simulator beforehand.
Running on Android:
Install the Android Studio from here, which will install the Android SDK and the required emulator. I’m using the Android 10 emulator for Pixel XL.
Open the MyApp folder in VS Code to make further changes.
Issues
Running the Android App causes issues while launching the Emulator. The error message is: React Native adb reverse ENOENT
Starting with macOS Catalina, your Mac uses zsh as the default login shell and interactive shell. You can make zsh the default in earlier versions of macOS as well.
So on your Mac:
1 – Open your .zshrc file:
React Native Debugger
2 – if .zshrc file doesn’t exist, you need to create one & open again(Step 1)
3 – Add this to your .zshrc file
4 – Save and close
5 – Compile your changes
& make sure to restart your terminal.
Run the command in the Terminal and you’ll see something like below if everything is fine:
Android Debug Bridge version 1.0.41
Version 30.0.0-6374843
Installed as /Users/<username>/Library/Android/sdk/platform-tools/adb
React Native Debugger Ui
You can also run the code in your VS Code Terminal and see the same output.
React Native Debugger Windows
The path to Android SDK is available in the Configure button -> SDK Manager (at the bottom right) when you launch Android Studio.