Serverless Framework + express, deploy sample

app.js

const serverless = require('serverless-http');
const express = require('express');
const indexRouter = require('./routes/index');
const usersRouter = require('./routes/users');

const app = express();
app.use('/', indexRouter);
app.use('/users',usersRouter);

//module.exports = app;
module.exports.handler = serverless(app);

index.js

var express = require('express');
var router = express.Router();

/* GET home page. */
router.get('/', function(req, res, next) {
  console.log("root");
  res.json({ret: 'root OK'});
});
router.get('/test', function(req, res, next) {
  console.log("test");
  res.json({ret: 'OK'});
});
router.get('/test2', function(req, res, next) {
  console.log("test");
  res.json({ret: 'OK, test2'});
});


module.exports = router;

package.json

{
  "name": "sls-express1",
  "version": "0.0.0",
  "private": true,
  "scripts": {
    "start": "node ./bin/www",
    "dev": "nodemon ./bin/www"
  },
  "dependencies": {
    "aws-sdk": "^2.1058.0",
    "cookie-parser": "~1.4.4",
    "debug": "~2.6.9",
    "express": "~4.16.1",
    "hbs": "~4.0.4",
    "http-errors": "~1.6.3",
    "morgan": "~1.9.1",
    "nodemon": "^2.0.15",
    "serverless-http": "^2.7.0"
  }
}

serverless.yml

service: sls-express1
# app and org for use with dashboard.serverless.com

frameworkVersion: "2"

provider:
  name: aws
  runtime: nodejs14.x
  region: ap-northeast-1
  stage: dev  
  lambdaHashingVersion: 20201221

functions:
  hello:
    handler: app.handler
    events:
      - http:
          path: /
          method: ANY 
      - http:
          path: /test
          method: ANY 
      - http:
          path: /test2
          method: ANY