Fixes #1090 (#1108)

src/UniversalDashboard.UITest/Assets/requires.txt

@@ -0,0 +1,2 @@
+using module Microsoft.PowerShell.Utility
+'Hello' | ConvertTo-Json

src/UniversalDashboard.UITest/Integration/Api.Tests.ps1

@@ -8,6 +8,24 @@ Import-Module $ModulePath -Force
 Get-UDRestApi | Stop-UDRestApi
 Get-UDDashboard | Stop-UDDashboard
 Describe "Api" {
+
+    Context "script block with requires" {
+        $Server = Start-UDRestApi -Port 10001 -Endpoint @(
+
+            $ScriptBlock = [ScriptBlock]::Create((Get-Content (Join-Path $PSScriptRoot "../Assets/requires.txt") -Raw))
+
+            New-UDEndpoint -Url "/scriptblock" -Method "GET" -Endpoint $ScriptBlock
+        ) 
+
+        It "not throw an error" {
+            (Invoke-RestMethod http://localhost:10001/api/scriptblock?hello=test) | Should be "Hello"
+        }
+
+        Stop-UDRestApi $Server
+    }
+
+    Wait-Debugger
+
     Context "Special Characters" {
         $Server = Start-UDRestApi -Port 10001 -Endpoint @(
             New-UDEndpoint -Url "/recherches" -Method "GET" -Endpoint {

src/UniversalDashboard/Execution/ExecutionService.cs

@@ -74,6 +74,15 @@ public object ExecuteEndpoint(ExecutionContext context, Endpoint endpoint)
                 }
 
                 var paramBlockBuilder = new StringBuilder();
+
+                if (scriptBlockAst.UsingStatements != null)
+                {
+                    foreach(var usingStatement in scriptBlockAst.UsingStatements)
+                    {
+                        paramBlockBuilder.AppendLine(usingStatement.ToString());
+                    }
+                }
+
                 paramBlockBuilder.Append("param(");
 
                 foreach (var parameter in context.Parameters)
@@ -84,7 +93,7 @@ public object ExecuteEndpoint(ExecutionContext context, Endpoint endpoint)
                 paramBlockBuilder.Append(")");
                 paramBlockBuilder.AppendLine();
 
-                script = paramBlockBuilder.ToString() + script;
+                script = paramBlockBuilder.ToString() + scriptBlockAst.EndBlock.ToString();
             }
 
             Collection<PSObject> output;