Installing package manager Homebrew brew

Paste that at a Terminal prompt.

/usr/bin/ruby -e "$(curl -fsSL <https://raw.githubusercontent.com/Homebrew/install/master/install>)"

Installing Xcode IDE

Download it using link below or find it on Mac App Store

https://developer.apple.com/download/

NOTE: If you have Xcode-beta.app installed along with production version of Xcode.app, make sure you are using production version of xcodebuild tool. You can set it with:

sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer/

Installing Android environment

*If you have installed XCode, Git is already installed, otherwise run the following

brew install git

Choose a Custom installation

[![Choose a Custom installation][3]][3]

Choose both Performance and Android Virtual Device

[![Choose both Performance and Android Virtual Device][4]][4]

After installation, choose Configure -> SDK Manager from the Android Studio welcome window.

[![choose Configure -> SDK Manager][5]][5]

In the SDK Platforms window, choose Show Package Details and under Android 6.0 (Marshmallow), make sure that Google APIs, Intel x86 Atom System Image, Intel x86 Atom_64 System Image, and Google APIs Intel x86 Atom_64 System Image are checked.

[![SDK Platforms window][6]][6]

In the SDK Tools window, choose Show Package Details and under Android SDK Build Tools, make sure that Android SDK Build-Tools 23.0.1 is selected.

[![SDK Tools window][7]][7]

Ensure the ANDROID_HOME environment variable points to your existing Android SDK. To do that, add this to your ~/.bashrc, ~/.bash_profile (or whatever your shell uses) and re-open your terminal: 

 If you installed the SDK without Android Studio, then it may be something like:
 /usr/local/opt/android-sdk

  export ANDROID_HOME=~/Library/Android/sdk

Dependencies for Mac

You will need Xcode for iOS and Android Studio for android, node.js, the React Native command line tools, and Watchman.

We recommend installing node and watchman via Homebrew.