This is an issue I have been having for some time and I have just not been able to find any solution to it.
Often times I have a PowerShell advanced function/ simple function that is using a native command internally. I want the function to have a seamless PowerShell experience, and I mostly achieved this except for whatever messages the cli might decide to print. Cli tools have “quite” options, so I use that when I can but some dont have it.

For example calibre-convert has a -verbose flag but its only used to increase the number of output messages. The tool essentially does not have an option to turn of its messages.

I have tried a variety of things in PowerShell to get around this issue. For example, running either of the following lines always prints the following output:

calibre-convert inputBook.epub outputBook.pdf |out-null
$dump = calibre-convert inputBook.epub outputBook.pdf

The output:

qt.webenginecontext:

qt.webenginecontext:

GL Type: disabled
Surface Type: OpenGL
Surface Profile: NoProfile
Surface Version: 3.0
QSG RHI Backend: OpenGL
Using Supported QSG Backend: yes
Using Software Dynamic GL: yes
Using Multithreaded OpenGL: no

Init Parameters:
  *  application-name ebook-convert
  *  browser-subprocess-path C:Program FilesCalibre2appbinQtWebEngineProcess.exe
  *  disable-features ConsolidatedMovementXY,InstalledApp,BackgroundFetch,WebOTP,WebPayments,WebUSB,PictureInPicture
  *  disable-gpu
  *  disable-speech-api
  *  enable-features NetworkServiceInProcess,TracingServiceInProcess
  *  enable-threaded-compositing
  *  in-process-gpu
  *  use-gl disabled

Of course these messages have a purpose, I use them when I am writting my function, I just dont need them when in actual use as intend to do my own error handling.

powershell 7.4