Download create-next-app to bootstrap the example:

npx create-next-app --example custom-server-typescript custom-server-typescript-app
# or
yarn create next-app --example custom-server-typescript custom-server-typescript-app

Download the example or clone the repo:

curl https://codeload.github.com/zeit/next.js/tar.gz/canary | tar -xz --strip=2 next.js-canary/examples/custom-server-typescript
cd custom-server-typescript

Install it and run:

npm install
npm run dev

Deploy it to the cloud with now (download)

now

The example shows how you can use TypeScript on both the server and the client while using Nodemon to live reload the server code without affecting the Next.js universal code. Server entry point is server/index.ts in development and production-server/index.js in production. The second directory should be added to .gitignore.