serialize nuxt api endpoint data with devalue

currentDate.ts

// server/api/currentDate
import { stringify } from "devalue"
export default defineEventHandler(async (event) => {


  const data = {
    createAt: new Date(),
  }
  if (getHeader(event, 'Content-Type') === 'application/devalue') {
    const dataToJSON = {
      ...data,
      toJSON() {
        return this;
      }
    }
    return stringify(data) as unknown as typeof dataToJSON;
  }

  return data;
  
})

// app.vue
const { data } = await useFetch('/api/currentDate', {
  headers:{
    'Content-Type': "application/devalue"
  },
  transform(data) {
    return devalue.parse(data as unknown as string) as typeof data;
  }
})