unexpected breaking changes with `process.exitCode`/`process.exit()`

Version

20.0.0-pre (nightly)

Platform

Darwin dib.lan 22.1.0 Darwin Kernel Version 22.1.0: Sun Oct 9 20:14:30 PDT 2022; root:xnu-8792.41.9~2/RELEASE_ARM64_T8103 arm64

Subsystem

process

What steps will reproduce the bug?

const assert = require('assert')

process.exitCode = 2
delete process.exitCode // REMOVE
assert(process.exitCode === undefined) // REMOVE
process.exit(undefined)

How often does it reproduce? Is there a required condition?

reproduces on all node versions built after landing #44711

What is the expected behavior?

the assertion should pass, and if the two lines marked REMOVE are commented out the process should exit with code 2

What do you see instead?

the assertion throws, and if the two lines marked REMOVE are commented out the process exits with code 0

Additional information

No response

まず、#44711 より後のビルドで再現手順を実行し、process.exitCode の削除と process.exit(undefined) を比較します。マークされた行を削除したときにアサーションが成功し、プロセスが引き続きコード 2 で終了すれば完了です。