Setting Up TypeScript in React Application

npm install --save typescript @types/node @types/react-dom @types/jest 
App.js --> App.tsx
index.js --> index.tsx
let thisVariable: any = 'this can be anything" 

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Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store