nodejs istTTY is true on git-bash but undefined on msys2

[wszgrcy]

Describe the issue

when run node -p -e "process.stdout.isTTY" on git-bash(git for window,mingw64,mintty 3.6.1) return true.
on msys2(or mingw64 mingw32....),return undefined

• same node version (node 16.14.2),same mintty version(3.6.1),but msys2 display does not meet expectations...
• on vscode terminal use msys2 bash also return true
• I try to copy msys2.exe in git folder and run, same return true
• I find mintty Improve support for native console programs mintty/mintty#56 has resolve on 3.1.0,is the same problem?

Steps to Reproduce the Problem

1. open E:\msys2\msys2.exe
2. run node -p -e "process.stdout.isTTY"

node is download on https://nodejs.org/

4. return undefind
5. What did you expect to happen instead?

retrun true

Additional Context: Operating System, Screenshots

If applicable, add screenshots to help explain your problem.

• OS: [e.g. Windows 10 19044.1165 ]
• '...'

[Biswa96]

The ConPTY feature in not enabled by default in msys2 environments. It has to be manually enabled using MSYS=enable_pcon environment variable before initiating any msys2 instance.

[lazka]

It's probably time we start thinking about enabling it by default..

[Biswa96]

I have seen some msys2/cygwin tools have weird behavior with conpty e.g. autotools, tmux etc.

[wszgrcy]

@Biswa96 thanks