Try installing winpty (pacman -S winpty) and running the command like winpty node

There is a fix in git for detecting if the standard handles are connected to a named pipe and the name is checked to see if it is a Cygwin pipe. It might be worth turning this into a new msys2_isatty() function and using that in all the packages that have this problem. We would need to ask for very liberal licensing permission for that though so that we can use it everywhere, or else we'd need to write our own version without reference to the original.

regarding winpty node - I think it's quite strange that normal commands will need to be run that way. Default console in msys2 should behave properly, just like everyone expects.

It depends what your definition of "normal commands" is. Programs that run under the msys-2.0.dll/Cygwin POSIX emulation environment will work fine in MinTTY. Native Windows programs like node, or anything in /mingw64/bin or /mingw32/bin are from a different runtime environment so they are not perfectly compatible with msys-2.0.dll/Cygwin.

You can run MSYS2 in a native Windows console instead of MinTTY, which should allow interactive native Windows programs to work better. I know that MinGW interactive Ruby (irb) works better. I use this simple batch script to launch MSYS2 and one of the features is that I can select which terminal to use:

https://gist.github.com/DavidEGrayson/2e5923b9c0d8acb3f7a7

@DavidEGrayson did it always have that problem with "normal commands", or it's something that was introduced recently? Maybe I haven't noticed that before if the problem always existed.

I think it has not changed recently. The isatty function called by MinGW programs comes from Microsoft's msvcrt.dll so it doesn't know about or support msys-2.0/Cygwin and I doubt there were any recent changes to it.

Well, anyways, I've made some changes in my msys2_shell.cmd and I have no problems and everything works perfectly. First of all, I did this (with new msys2 update lots of functionality stopped working for me because of this change):

rem To export full current PATH from environment into MSYS2 use '-use-full-path' parameter
rem or uncomment next line
set MSYS2_PATH_TYPE=inherit

and second thing, i changed if NOT EXIST "%WD%mintty.exe" goto startsh to goto startsh and everything works perfectly for me, regular node etc, and console behaves well, just like regular putty.

nodejs is no longer available.