serverless-http & iopipe

index.js

const serverless = require("serverless-http");
const express = require("express");
const app = express();
// require("express-async-errors");

app.get("/hello", function(_req, res, _next) {
  console.log("Hello, World");

  try {
    res.status(200).json({
      message: "Go Serverless v1.0! Your function executed successfully!"
    });
  } catch (e) {
    console.log(e);
  }

  console.log("Hello, World");
});

app.get("/throw", function(_req, _res, next) {
  console.log("About to throw");
  return next(new Error("Throw this"));
});

app.use(function(err, _req, res, _next) {
  console.error(err.stack);
  res.status(500).send(`Something broke: ${err.message}`);
});

module.exports = { handler: serverless(app) };

package.json

{
  "name": "hello-world",
  "version": "1.0.0",
  "description": "",
  "main": "handler.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "serverless-es-logs": "^3.0.3",
    "serverless-iopipe-layers": "^0.4.0",
    "serverless-offline": "^5.10.1"
  },
  "dependencies": {
    "express": "^4.17.1",
    "express-async-errors": "^3.1.1",
    "serverless-http": "^2.3.0"
  }
}

serverless.yml

service: xxx-hello-world

provider:
  name: aws
  runtime: nodejs10.x
  deploymentBucket:
    name: xxx
  stage: ${opt:stage, 'dev'}
  region: ${opt:region, 'eu-west-2'}
  logRetentionInDays: 30
  versionFunctions: false
  excludeDevDependencies: true
  environment:
    stage: ${self:provider.stage}
    region: ${self:provider.region}

plugins:
  # - serverless-plugin-typescript
  - serverless-offline
  - serverless-es-logs
  - serverless-iopipe-layers

functions:
  app:
    handler: index.handler
    events:
      - http: ANY /
      - http: "ANY {proxy+}"

custom:
  iopipe:
    token: ${file(${self:provider.stage}.yml):iopipeToken}
  esLogs:
    endpoint: xxx.eu-west-2.es.amazonaws.com
    index: serverless-logs
    tags:
      stage: ${self:provider.stage}
      region: ${self:provider.region}
      service: hello-world
  serverless-offline:
    region: ${self:provider.region}
    port: 3000
  serverless-iam-roles-per-function:
    defaultInherit: true