Navigate to each folder and run:
npm i
npm start
React 14 uses localhost:8080, React 15 project uses localhost:8081 and React 16 project uses localhost:8082 so you can run them simultaneously.
Keep the console open to see measured times.
Special thanks to magnificent community members who helped me with ideas and corrected my mistakes:
- Modus Create
- Dan Abramov - thank you for proof reading and explaining the internals
- Dr. Axel Rauschmayer (I used his starter project so I can start coding faster)