Invoke-Command2.ps1

function Invoke-Command2 {
<#
	.SYNOPSIS
		Wrapper function that calls Invoke-Command and gracefully handles credentials.
	
	.DESCRIPTION
		Wrapper function that calls Invoke-Command and gracefully handles credentials.
	
	.PARAMETER ComputerName
		Default: $env:COMPUTERNAME
		The computer to invoke the scriptblock on.
	
	.PARAMETER Credential
		The credentials to use.
		Can accept $null on older PowerShell versions, since it expects type object, not PSCredential
	
	.PARAMETER ScriptBlock
		The code to run on the targeted system
	
	.PARAMETER ArgumentList
		Any arguments to pass to the scriptblock being run
	
	.PARAMETER Raw
		Passes through the raw return data, rather than prettifying stuff.
	
	.EXAMPLE
		PS C:\> Invoke-Command2 -ComputerName sql2014 -Credential $Credential -ScriptBlock { dir }
		
		Executes the scriptblock '{ dir }' on the computer sql2014 using the credentials stored in $Credential.
		If $Credential is null, no harm done.
#>
	[CmdletBinding()]
	param (
		[DbaInstanceParameter]$ComputerName = $env:COMPUTERNAME,
		[object]$Credential,
		[scriptblock]$ScriptBlock,
		[object[]]$ArgumentList,
		[switch]$Raw
	)
	
	$InvokeCommandSplat = @{
		ScriptBlock = $ScriptBlock
	}
	if ($ArgumentList) { $InvokeCommandSplat["ArgumentList"] = $ArgumentList }
	if (-not $ComputerName.IsLocalhost) { $InvokeCommandSplat["ComputerName"] = $ComputerName.ComputerName }
	if ($Credential) { $InvokeCommandSplat["Credential"] = $Credential }
	
	if ($Raw) { Invoke-Command @InvokeCommandSplat }
	else { Invoke-Command @InvokeCommandSplat | Select-Object -Property * -ExcludeProperty PSComputerName, RunspaceId, PSShowComputerName }
}