react-query/examples/react/load-more-infinite-scroll/src/pages/api/projects.ts

import type { NextApiRequest, NextApiResponse } from 'next'

export default (req: NextApiRequest, res: NextApiResponse) => {
  const cursor = parseInt(req.query.cursor) || 0
  const pageSize = 5

  const data = Array(pageSize)
    .fill(0)
    .map((_, i) => {
      return {
        name: 'Project ' + (i + cursor) + ` (server time: ${Date.now()})`,
        id: i + cursor,
      }
    })

  const nextId = cursor < 10 ? data[data.length - 1].id + 1 : null
  const previousId = cursor > -10 ? data[0].id - pageSize : null

  setTimeout(() => res.json({ data, nextId, previousId }), 1000)
}