Install node
1) download node : https://nodejs.org/en/
2) check version : node -v and nmp -v

Install React Js
1) npm install -g create-react-app // react already install then not run this command
2) create-react-app first-app
3) cd first-app
   npm start




Keystore password: 11d9a3a00b1b460dbf9f9065de67aa6f
Key alias:         QHJhanB1dHByYXNoYW50L2NhbWVyYUFwcA==
Key password:      c032199b6eb14bfcb16cc6e32932a405

Path to Keystore:  C:\Users\ITPL\Desktop\ReactNativ\cameraApp\cameraApp.jks

# React Native Android related settings
export ANDROID_HOME=$HOME/Library/Android/sdk 
export ANDROID_HOME=$HOME/Library/Android/sdk 
export PATH=$PATH:$ANDROID_HOME/emulator 
export PATH=$PATH:$ANDROID_HOME/tools 
export PATH=$PATH:$ANDROID_HOME/tools/bin 
export PATH=$PATH:$ANDROID_HOME/platform-tools