From 9f9fb2d158e2422946701761ded90c21f4bd72e7 Mon Sep 17 00:00:00 2001
From: Mohammadreza Taikandi <mrtaikandi@hotmail.com>
Date: Fri, 26 Mar 2021 07:58:08 +0000
Subject: [PATCH] Fix empty global build option issue.

---
 src/MapTo/Extensions/GeneratorExecutionContextExtensions.cs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/MapTo/Extensions/GeneratorExecutionContextExtensions.cs b/src/MapTo/Extensions/GeneratorExecutionContextExtensions.cs
index 7f3e4cb..cb690e4 100644
--- a/src/MapTo/Extensions/GeneratorExecutionContextExtensions.cs
+++ b/src/MapTo/Extensions/GeneratorExecutionContextExtensions.cs
@@ -1,6 +1,5 @@
 using System;
 using System.Text;
-using MapTo.Sources;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp;
 using Microsoft.CodeAnalysis.Text;
@@ -13,7 +12,7 @@ namespace MapTo.Extensions
 
         internal static T GetBuildGlobalOption<T>(this GeneratorExecutionContext context, string propertyName, T defaultValue = default!) where T : notnull
         {
-            if (!context.AnalyzerConfigOptions.GlobalOptions.TryGetValue(GetBuildPropertyName(propertyName), out var optionValue))
+            if (!context.AnalyzerConfigOptions.GlobalOptions.TryGetValue(GetBuildPropertyName(propertyName), out var optionValue) || string.IsNullOrWhiteSpace(optionValue))
             {
                 return defaultValue;
             }