Wrapping an executable with nullable parameters - powershell

Question

In cmd I can write a batch file like so, which will provide an alias for an executable.
SuperUtil.bat
call Mine.Library.SuperUtil.exe %*
So I can call
SuperUtil -t SomeParam
This is my attempt of a PowerShell equivalent
Start-Process Mine.Library.SuperUtil.exe -NoNewWindow -ArgumentList $args
However when I call it with no parameters I get an error.
Start-Process : Cannot validate argument on parameter 'ArgumentList'.
The argument is null, empty, or an element of the argument collection
contains a null value. Supply a collection that does not contain any
null values and then try the command again.
I've tried the following but doesn't pass the arguments, plus it's quite verbose:
if ($args -ne $Null)
{
Start-Process Mine.Library.SuperUtil.exe -NoNewWindow -ArgumentList $args -Wait
}
else
{
Start-Process Mine.Library.SuperUtil.exe -NoNewWindow -Wait
}
So I want to optionally pass the arguments or not, in order to explore the command line options.

Answer 1

Use splatting if you want to provide optional parameter arguments:
$params = #{}
if($args){
$params['ArgumentList'] = $args
}
Start-Process Mine.Library.SuperUtil.exe -NoNewWindow -Wait #params
If the $params hashtable is empty by the time Start-Process is invoked, it'll simply be ignored.
You can also squash the other parameter arguments into the hashtable if you want:
$params = #{
FilePath = 'Mine.Library.SuperUtil.exe'
NoNewWindow = $true
Wait = $true
}
if($args){
$params['ArgumentList'] = $args
}
Start-Process #params
Makes maintenance of the script easy (but obviously still quite verbose compared to the batch file alternative)

Answer 2

Read About Automatic Variables:
$ARGS Contains an array of the undeclared parameters and/or parameter values that are passed to a function, script, or
script block.
Therefore, check if ($args.Count -ne 0) rather than if ($args -ne $Null) as the automatic variable $args is always an array (and never $Null).