How do I set up HELIOS on my server?

Install and run

1. Download the ZIP from your DEV3 account and unzip it.

2. Open a terminal in the unzipped folder and install the dependencies:

   npm install

3. Start the development server:

   npm run dev

   Open the address it prints (port 3000 by default; use npm run dev -- -p 4000 for another port) and scroll from the Sun to Neptune.

Production build

npm run build
npm run start

npm run lint runs ESLint with the Next.js config.

Deploy

• Vercel or any Node host: import the project and keep the default Next.js settings (build command npm run build). No environment variables are required.
• Static hosting: next.config.ts has a static-export mode that is switched on by the DEMO_EXPORT_BASE variable. Set it to the sub-path you will serve from (for example /helios) and run npx next build; the site is written to out/, which you can upload to any static host or CDN. The build:demo script in package.json is the configuration used for DEV3's hosted demo; remove its NEXT_PUBLIC_DEMO_DOWNLOAD_URL setting so the "Get this template" badge is not shown on your site.