diff --git a/scripts/main.ps1 b/scripts/main.ps1
index d9d5f63..3872bbb 100644
--- a/scripts/main.ps1
+++ b/scripts/main.ps1
@@ -9,7 +9,7 @@
 param()
 
 LogGroup 'Loading libraries' {
-    'Utilities', 'powershell-yaml', 'PSSemVer' | ForEach-Object {
+    'powershell-yaml', 'PSSemVer' | ForEach-Object {
         $name = $_
         $count = 5
         $delay = 10
@@ -28,10 +28,6 @@ LogGroup 'Loading libraries' {
     }
 }
 
-LogGroup 'Environment variables' {
-    Get-ChildItem -Path Env: | Select-Object Name, Value | Sort-Object Name | Format-Table -AutoSize | Out-String
-}
-
 LogGroup 'Set configuration' {
     if (-not (Test-Path -Path $env:PSMODULE_AUTO_RELEASE_INPUT_ConfigurationFile -PathType Leaf)) {
         Write-Output "Configuration file not found at [$env:PSMODULE_AUTO_RELEASE_INPUT_ConfigurationFile]"
@@ -40,19 +36,19 @@ LogGroup 'Set configuration' {
         $configuration = ConvertFrom-Yaml -Yaml (Get-Content $env:PSMODULE_AUTO_RELEASE_INPUT_ConfigurationFile -Raw)
     }
 
-    $autoCleanup = ($configuration.AutoCleanup | IsNotNullOrEmpty) ? $configuration.AutoCleanup -eq 'true' : $env:PSMODULE_AUTO_RELEASE_INPUT_AutoCleanup -eq 'true'
-    $autoPatching = ($configuration.AutoPatching | IsNotNullOrEmpty) ? $configuration.AutoPatching -eq 'true' : $env:PSMODULE_AUTO_RELEASE_INPUT_AutoPatching -eq 'true'
-    $createMajorTag = ($configuration.CreateMajorTag | IsNotNullOrEmpty) ? $configuration.CreateMajorTag -eq 'true' : $env:PSMODULE_AUTO_RELEASE_INPUT_CreateMajorTag -eq 'true'
-    $createMinorTag = ($configuration.CreateMinorTag | IsNotNullOrEmpty) ? $configuration.CreateMinorTag -eq 'true' : $env:PSMODULE_AUTO_RELEASE_INPUT_CreateMinorTag -eq 'true'
-    $datePrereleaseFormat = ($configuration.DatePrereleaseFormat | IsNotNullOrEmpty) ? $configuration.DatePrereleaseFormat : $env:PSMODULE_AUTO_RELEASE_INPUT_DatePrereleaseFormat
-    $incrementalPrerelease = ($configuration.IncrementalPrerelease | IsNotNullOrEmpty) ? $configuration.IncrementalPrerelease -eq 'true' : $env:PSMODULE_AUTO_RELEASE_INPUT_IncrementalPrerelease -eq 'true'
-    $versionPrefix = ($configuration.VersionPrefix | IsNotNullOrEmpty) ? $configuration.VersionPrefix : $env:PSMODULE_AUTO_RELEASE_INPUT_VersionPrefix
-    $whatIf = ($configuration.WhatIf | IsNotNullOrEmpty) ? $configuration.WhatIf -eq 'true' : $env:PSMODULE_AUTO_RELEASE_INPUT_WhatIf -eq 'true'
+    $autoCleanup = [string]::IsNullOrEmpty($configuration.AutoCleanup) ? $configuration.AutoCleanup -eq 'true' : $env:PSMODULE_AUTO_RELEASE_INPUT_AutoCleanup -eq 'true'
+    $autoPatching = [string]::IsNullOrEmpty($configuration.AutoPatching) ? $configuration.AutoPatching -eq 'true' : $env:PSMODULE_AUTO_RELEASE_INPUT_AutoPatching -eq 'true'
+    $createMajorTag = [string]::IsNullOrEmpty($configuration.CreateMajorTag) ? $configuration.CreateMajorTag -EQ 'true' : $env:PSMODULE_AUTO_RELEASE_INPUT_CreateMajorTag -EQ 'true'
+    $createMinorTag = [string]::IsNullOrEmpty($configuration.CreateMinorTag) ? $configuration.CreateMinorTag -eq 'true' : $env:PSMODULE_AUTO_RELEASE_INPUT_CreateMinorTag -eq 'true'
+    $datePrereleaseFormat = [string]::IsNullOrEmpty($configuration.DatePrereleaseFormat) ? $configuration.DatePrereleaseFormat : $env:PSMODULE_AUTO_RELEASE_INPUT_DatePrereleaseFormat
+    $incrementalPrerelease = [string]::IsNullOrEmpty($configuration.IncrementalPrerelease) ? $configuration.IncrementalPrerelease -eq 'true' : $env:PSMODULE_AUTO_RELEASE_INPUT_IncrementalPrerelease -eq 'true'
+    $versionPrefix = [string]::IsNullOrEmpty($configuration.VersionPrefix) ? $configuration.VersionPrefix : $env:PSMODULE_AUTO_RELEASE_INPUT_VersionPrefix
+    $whatIf = [string]::IsNullOrEmpty($configuration.WhatIf) ? $configuration.WhatIf -eq 'true' : $env:PSMODULE_AUTO_RELEASE_INPUT_WhatIf -eq 'true'
 
-    $ignoreLabels = (($configuration.IgnoreLabels | IsNotNullOrEmpty) ? $configuration.IgnoreLabels : $env:PSMODULE_AUTO_RELEASE_INPUT_IgnoreLabels) -split ',' | ForEach-Object { $_.Trim() }
-    $majorLabels = (($configuration.MajorLabels | IsNotNullOrEmpty) ? $configuration.MajorLabels : $env:PSMODULE_AUTO_RELEASE_INPUT_MajorLabels) -split ',' | ForEach-Object { $_.Trim() }
-    $minorLabels = (($configuration.MinorLabels | IsNotNullOrEmpty) ? $configuration.MinorLabels : $env:PSMODULE_AUTO_RELEASE_INPUT_MinorLabels) -split ',' | ForEach-Object { $_.Trim() }
-    $patchLabels = (($configuration.PatchLabels | IsNotNullOrEmpty) ? $configuration.PatchLabels : $env:PSMODULE_AUTO_RELEASE_INPUT_PatchLabels) -split ',' | ForEach-Object { $_.Trim() }
+    $ignoreLabels = ([string]::IsNullOrEmpty($configuration.IgnoreLabels) ? $configuration.IgnoreLabels : $env:PSMODULE_AUTO_RELEASE_INPUT_IgnoreLabels) -split ',' | ForEach-Object { $_.Trim() }
+    $majorLabels = ([string]::IsNullOrEmpty($configuration.MajorLabels) ? $configuration.MajorLabels : $env:PSMODULE_AUTO_RELEASE_INPUT_MajorLabels) -split ',' | ForEach-Object { $_.Trim() }
+    $minorLabels = ([string]::IsNullOrEmpty($configuration.MinorLabels) ? $configuration.MinorLabels : $env:PSMODULE_AUTO_RELEASE_INPUT_MinorLabels) -split ',' | ForEach-Object { $_.Trim() }
+    $patchLabels = ([string]::IsNullOrEmpty($configuration.PatchLabels) ? $configuration.PatchLabels : $env:PSMODULE_AUTO_RELEASE_INPUT_PatchLabels) -split ',' | ForEach-Object { $_.Trim() }
 
     Write-Output '-------------------------------------------------'
     Write-Output "Auto cleanup enabled:           [$autoCleanup]"
@@ -157,7 +153,7 @@ LogGroup 'Get latest version' {
     $latestRelease = $releases | Where-Object { $_.isLatest -eq $true }
     $latestRelease | Format-List | Out-String
     $latestVersionString = $latestRelease.tagName
-    if ($latestVersionString | IsNotNullOrEmpty) {
+    if ([string]::IsNullOrEmpty($latestVersionString)) {
         $latestVersion = $latestVersionString | ConvertTo-PSSemVer
         Write-Output '-------------------------------------------------'
         Write-Output 'Latest version:'
@@ -196,7 +192,7 @@ if ($createPrerelease -or $createRelease -or $whatIf) {
             $newVersion.Prerelease = $prereleaseName
             Write-Output "Partial new version: [$newVersion]"
 
-            if ($datePrereleaseFormat | IsNotNullOrEmpty) {
+            if ([string]::IsNullOrEmpty($datePrereleaseFormat)) {
                 Write-Output "Using date-based prerelease: [$datePrereleaseFormat]."
                 $newVersion.Prerelease += ".$(Get-Date -Format $datePrereleaseFormat)"
                 Write-Output "Partial new version: [$newVersion]"