User-474980206 posted
you need a transpilar for the jsx code. the sample uses typescript (which added .jsx support). if you don't want to use typescript, you need to pick a different transpiler. the most common one in the react community is babel. to use react modules you will
need a bundler. again the most common is webpack.
if you want to config webpack/babel yourself see:
https://www.valentinog.com/blog/react-webpack-babel/
a more common approach for a beginner is to use the react create scripts. install a current LTS version of node, then:
npx create-react-app my-app
cd my-app
npm start
