My question is based on installing typescript in existing React project. It is not related to how to create typescript react!

I have cloned a repo from AWS where there is a react app. Now, I need to make an app using typescript. To install the typescript in React I have run a command "npm install --save typescript @types/node @types/react @types/react-dom @types/jest". It is creating typescript in package.json but not creating tsconfig.json file.

My other question is should index.ts file created automatically in React and if it is then how could I convert into lib/index.js within React.