how to update create react app node modules code example

Example 1: npx create-react-app

npx create-react-app my-app
cd my-app
npm start

Example 2: how to update react app

//open terminal and run thsi code 
cd newreact
//where newreact is the old react app you created
//open package.json in text editor and change the version to latest
//open the same terminal gain and run this
npm install