PowerShell module to register a FileSystemWatcher to copy files from source folder to destination folder

RegisterWatcherToCopy.psm1

function Register-Watcher-ToCopy {
    param (
	[string]$sourceFolder,
	[string]$destFolder,
    [string]$id
    )

    $filter = "*.*"
    $watcher = New-Object System.IO.FileSystemWatcher $sourceFolder, $filter -Property @{
        IncludeSubdirectories = $true
        EnableRaisingEvents = $true
    }
	
    $messageData = New-Object psobject -Property @{ 
    	SourceFolder = $sourceFolder
	    DestFolder = $destFolder
    }
    
    $action = {
        ROBOCOPY $Event.MessageData.SourceFolder $Event.MessageData.DestFolder /E /PURGE
    }

    Register-ObjectEvent -InputObject $watcher -EventName "Changed" -SourceIdentifier $id -MessageData $messageData -Action $action
}

Export-ModuleMember Register-Watcher-ToCopy