[bug] Pending requests when using Node 16.x

[ApacheEx]

Bug Report

Current Behavior
When I make some XHR requests from my UI application to serverless-offline application. It always shows them with the pending status in the network tab:

from another side, it's started (serverless offline start) without any errors.

Sample Code

• file: serverless.yml

service: my-service

plugins:
  - serverless-offline

provider:
  runtime: nodejs12.x
  stage: dev

functions:
  hello:
    events:
      - http:
          method: get
          path: hello
    handler: handler.hello

• file: handler.js

'use strict'

const { stringify } = JSON

exports.hello = async function hello() {
  return {
    body: stringify({ foo: 'bar' }),
    statusCode: 200,
  }
}

Expected behavior/code

Environment

• serverless version: 2.41.1
• serverless-offline version: 7.0.0
• node.js version: 16.1.0
• OS: macOS 11.3.1 (apple silicon)

Possible Solution

downgrading Node to 15.9 or 14.x fixes the issue.

[karltaylor]

I had the same issue however it seems that the requests are not getting through to the application.

Env

serverless -v
Framework Core: 2.43.1
Plugin: 5.1.3
SDK: 4.2.2
Components: 3.10.0

• node: 16.1.0
• serverless-offline: 6.8.0

I am using serverless-http to wrap an express app, using node@16.1.0 I could make postman GET calls which returned ok. However any POST, PATCH, PUT, DELETE did not work.

Note: They did not even hit the serverless application, when I removed these routes/endpoints, it should return a 404, (This happens when removing the GET which is correct) - however, the request just hangs indefinitely.

Hopefully adds some additional information, but like @ApacheEx mentioned, downgrading works:

nvm install --lts && nvm use --lts # v14.17.0 at time of comment

[brunocalderon]

Maybe related to #1150 #1151 ?

[alienself]

Same error with Node 16.6 :(

[mauroexdefalt]

alguém com alguma solução ? aqui também as rotas param de responder se deixar no node 16

[NicolasRomeroF]

Same error with node 16.13, I have a GraphQL api and can't even do request on the graphql playground

[darbio]

I still had the same error with node 16.13.1 - updating to the latest version of sls offline solved the issue. Thank you.

[jfbette]

@darbio which version of sls offline solved the problem? I have the problem too with v6.9.0

[darbio]

@darbio which version of sls offline solved the problem? I have the problem too with v6.9.0

From my package.json:

"serverless-offline": "^8.8.0"

[jfbette]

@darbio I updated and now its working fine! thanks!