Preview Mode
Using preview mode with DrupalClient.
To implement preview mode, configure entity types on Drupal. See the guide here.
- Implement 
/pages/api/preview.ts. 
pages/api/preview.ts
import { drupal } from "lib/drupal"
export default async function handler(req, res) {  return await drupal.preview(req, res)}- Implement 
/pages/api/exit-preview.ts 
pages/api/exit-preview.ts
export default function exit(_, res) {  res.clearPreviewData()  res.writeHead(307, { Location: "/" })  res.end()}