Powershell module for detecting conflicts between Witcher 3 mods

conflicts.psm1

# Usage
# 1. Download quickbms.exe and witcher3.bms (The ScriptMerger files are outdated):
#   http://aluigi.altervista.org/papers/quickbms.zip
#   http://aluigi.altervista.org/bms/witcher3.bms
# 2. Place this file into a directory next to quickbms.exe and witcher3.bms
# 3. Load this module in your PowerShell profile

$quickbmsPath = "$PSScriptRoot\quickbms.exe"
$witcherbmsPath = "$PSScriptRoot\witcher3.bms"

# To show conflicts between two (or more) mods, run `Find-WitcherConflicts <mod1> <mod2> <...>` inside the Powershell console.
#   For example: `Find-WitcherConflicts modHDReworkedProject modBrothersInArms`
# To list every conflicting mod file, run this script with only one mod as an argument.
#   For example: `Find-WitcherConflicts modBrothersInArms`
function Find-WitcherConflicts {
	$outputs = New-Object System.Collections.Generic.List[System.Object]
	$modCount = $args.Count
	$args | ForEach-Object {
		$arg = $_
		$output = Show-WitcherBundles $arg
		$outputs += $output

		# if only one argument is provided, comapare agains every other mods
		if ($modCount -eq 1) {
			Write-Host "Looking for conflicts. This may take a while!`n"
			Get-ChildItem -Directory -Filter "mod*" | Select-Object -ExpandProperty Name | ForEach-Object {
				$mod = $_
				if ($mod -ne $arg) {
					$modOutput = Show-WitcherBundles $mod
					if ($modOutput.Length -gt 0) {
						$conflicts = Compare-Object -ReferenceObject $output -DifferenceObject $modOutput -PassThru -ExcludeDifferent | Out-String
						if ($conflicts.Length -gt 0) { Write-Host "$mod`n$conflicts"}
					}
				}
			}
		}
	}
	if ($modCount -gt 1) { Compare-Object @outputs -PassThru -ExcludeDifferent }
}

# List every bundled file in the mods provided
function Show-WitcherBundles {
	$args | ForEach-Object {
		$arg = $_
		if (Test-Path -Path $arg) {
			$modOutput = (. $quickbmsPath -l -F "$arg/content/blob0.bundle" $witcherbmsPath "./" 2>$null)
			$files = $modOutput.ForEach({ ($_ -split '\s+')[3] })
			return $files
		} else {
			Write-Error "$arg doesn't exist in the current directory" -ErrorAction Stop
		}
	}
}

Export-ModuleMember -Function Find-WitcherConflicts
Export-ModuleMember -Function Show-WitcherBundles