Fix PSScriptAnalyzer warnings in Update-AliasesToExport and Add-Parameter

Author: Jaykul

Source/Public/Add-Parameter.ps1

@@ -174,7 +174,7 @@ function Add-Parameter {
                 }
 
                 Write-Debug "Existing parameters: $($Ast.Parameters.Name -join ', ')"
-                $global:ParameterSource = $this.ParameterSource
+                # $global:ParameterSource = $this.ParameterSource
                 $Additional = $this.ParameterSource.Parameters.Where{ $_.Name -notin ([string[]]$Ast.Parameters.Name) }
                 Write-Debug "Additional parameters from boilerplate: $($Additional.Count)"
                 if (($Text = $Additional.Text -join ",`n`n")) {

Source/Public/Update-AliasesToExport.ps1

@@ -10,7 +10,7 @@ function Update-AliasesToExport {
 
             This function never outputs any TextReplacements
     #>
-    [CmdletBinding()]
+    [CmdletBinding(SupportsShouldProcess)]
     [OutputType([TextReplacement])]
     param(
         # The AST of the root script module to find aliases in
@@ -143,7 +143,7 @@ function Update-AliasesToExport {
     process {
         $Visitor = [AliasExportGenerator]::new()
         $ScriptModule.Visit($Visitor)
-        Update-Metadata -Path $ModuleManifest -PropertyName AliasesToExport -Value $Visitor.Aliases
+        Update-Metadata -Path $ModuleManifest -PropertyName AliasesToExport -Value $Visitor.Aliases -WhatIf:$WhatIfPreference -Confirm:($ConfirmPreference -eq 'Low')
     }
 }