Warning "Jest did not exit one second after the test run has completed" out on Node v20

[ti2sugiyama]

Hi, I'm getting the warning "Jest did not exit one second after the test run has completed", not always but only when I run a short run time test(maybe less than 60sec? or 30sec?).

I found a ChangeLog that may be related to this issue. it's about "keep HTTP/1.1 conns alive".

• https://github.com/nodejs/node/blob/main/doc/changelogs/CHANGELOG_V20.md#20.0.0
  • nodejs/node@2a29df6464
  • http: keep HTTP/1.1 conns alive even if the Connection header is removed nodejs/node#46331

and I tested to add "connection":"close" header to the wait-for-localhost.ts file and no more warning out.

https://github.com/shelfio/jest-dynamodb/blob/v3.4.2/src/utils/wait-for-localhost.ts#L14C9-L14C48

{headers:{'connection': 'close'}, method: 'GET', port, host, path: '/'},

Can I set header options? or is there a workaround?

Package Versions

"@shelf/jest-dynamodb": "^3.4.2",
"jest": "^29.7.0",
"ts-jest": "^29.1.1",

[SuperFun99]

You can also add response.resume() or response.destroy() at the top of the response callback in wait-for-localhost. Unfortunately I couldn't find a better workaround.