pages/api/icons/create.ts

// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
import type { NextApiRequest, NextApiResponse } from "next";
import { API } from "utils/api";
import clientPromise from "lib/mongo";

export default async function handler(
  req: NextApiRequest,
  res: NextApiResponse
) {
  const client = await clientPromise;
  const db = client.db("test");
  const getCount = await db.collection("icons").findOne({
    counter: true,
  });
  await db.collection("icons").updateOne(
    {
      counter: true,
    },
    {
      $set: {
        amount: getCount.amount + 1,
      },
    }
  );

  res.status(200);
}