How to use cognito-express - 1 common examples

import CognitoExpress from "cognito-express";
import express from "express";
import {get} from "lodash";
import {ALLOWED_GROUPS} from "../constants";

//Initializing CognitoExpress constructor
const cognitoExpress = new CognitoExpress({
  region: "us-east-1",
  cognitoUserPoolId: process.env.COGNITO_USER_POOL_ID,
  tokenUse: "id", //Possible Values: access | id
  tokenExpiration: 3600000 //Up to default expiration of 1 hour (3600000 ms)
});

export const authenticatedRoute = express.Router();
authenticatedRoute.use(function (req, res, next) {
  let accessTokenFromClient = req.headers.authorization;
  if (!accessTokenFromClient) return res.status(401).send("Access Token missing from header");

  cognitoExpress.validate(accessTokenFromClient, function (err, response) {
    if (err) return res.status(401).send(err);
    res.locals.user = response;
    next();
  });