next.js/packages/next/src/server/route-modules/app-page/module.render.ts

import type { AppPageRender } from '../../app-render/app-render'

export const lazyRenderAppPage: AppPageRender = (...args) => {
  if (process.env.NEXT_MINIMAL) {
    throw new Error("Can't use lazyRenderAppPage in minimal mode")
  } else {
    const render: AppPageRender = (
      require('./module.compiled') as typeof import('./module.compiled')
    ).renderToHTMLOrFlight

    return render(...args)
  }
}