borders/pages/api/border/[id].js

import NextCors from "nextjs-cors";
import { getBorderById } from "../../../lib/borders";

export default async function handler(req, res) {
  const id = req.query.id;
  await NextCors(req, res, {
    methods: ["GET", "HEAD"],
    origin: "*",
    optionsSuccessStatus: 200,
  });
  const result = await getBorderById(id);
  return res.status(200).json(result);
}