server-islands/astro.config.mjs

import { defineConfig } from 'astro/config'
import node from "@astrojs/node"

export default defineConfig({
    output: 'server',
    adapter: node({
      mode: "standalone"
    }),
    devToolbar: {
      enabled: false
    },
    vite: {
      server: {
        hmr: false, // Auto Reload
      }
    },
    experimental: {
        serverIslands: true
    }
})