Next.js ships with Fast Refresh which gives you instantaneous feedback on edits made to your React components.
This demos shows how the state of an auto incrementing value and a classic counter is preserved after edits or if there are errors.
Deploy the example using Vercel:
Execute create-next-app with npm or Yarn to bootstrap the example:
npx create-next-app --example fast-refresh-demo fast-refresh-demo-app
# or
yarn create next-app --example fast-refresh-demo fast-refresh-demo-appDeploy it to the cloud with Vercel (Documentation).