text: const express = require("express");
  const app = express();
  
  const mongodb = require("./db");
  
  app.use(
    express.urlencoded({
      extended: true,
    })
  );
  app.use(express.json());
  app.listen(3000, async () => {
    let client = await mongodb.getClient();
    let client2 = await mongodb.getClient();
    console.log(client2===client);
  });
  
  