Write your first Component in the React Native for iOS

You will need Node, Watchman, the React Native command line interface, Xcode and CocoaPods

How to install Node and Watchman

> brew install node
> brew install watchman
Note: Watchman is a tool by Facebook for watching changes in the filesystem.
It is highly recommended you install it for better performance.

Do setup of React Native using Command Line

 > npx react-native init ProjectName

Follow below steps to start the project with your first component:

  Once setup is done, It will generate all the files related iOS and android.
  > Go to Root folder and find index.ios.js and index.android.js file.
  > Check which component is using for render the component. 
  	It will rendering App.js file component.
  > Open App.js file.
  > Import App.js file in the index.ios.js and index.android.js file.
  > Then Run your app using command line.
      > Start Application in the iOS simulator using below command.
            > npx react-native run-ios
      > Start Application in the Android emulator using below command.
            > npx react-native run-android