From de84c162bcb42edfe2552734dd09282442d62de3 Mon Sep 17 00:00:00 2001
From: filzrev <103790468+filzrev@users.noreply.github.com>
Date: Mon, 21 Sep 2026 17:18:16 +0900
Subject: [PATCH] deps: update YamlDotNet version to 18..1.0

---
 Directory.Packages.props                                      | 2 +-
 .../TypeInspectors/ExtensibleTypeInspectorSkeleton.cs         | 4 ++++
 src/Docfx.YamlSerialization/YamlDeserializer.cs               | 4 ++++
 .../MergeMarkdownFragmentsTest.cs                             | 2 +-
 test/Docfx.Build.Tests/TocDocumentProcessorTest.cs            | 2 +-
 5 files changed, 11 insertions(+), 3 deletions(-)

diff --git a/Directory.Packages.props b/Directory.Packages.props
index bd56eb6b5dc..9dc17b22ea3 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -19,7 +19,7 @@
     <PackageVersion Include="Spectre.Console.Cli" Version="0.55.0" />
     <PackageVersion Include="Stubble.Core" Version="1.10.8" />
     <PackageVersion Include="System.Composition" Version="10.0.12" />
-    <PackageVersion Include="YamlDotNet" Version="16.3.0" />
+    <PackageVersion Include="YamlDotNet" Version="18.1.0" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/Docfx.YamlSerialization/TypeInspectors/ExtensibleTypeInspectorSkeleton.cs b/src/Docfx.YamlSerialization/TypeInspectors/ExtensibleTypeInspectorSkeleton.cs
index 715bec3a57f..83a0c777967 100644
--- a/src/Docfx.YamlSerialization/TypeInspectors/ExtensibleTypeInspectorSkeleton.cs
+++ b/src/Docfx.YamlSerialization/TypeInspectors/ExtensibleTypeInspectorSkeleton.cs
@@ -64,4 +64,8 @@ public IPropertyDescriptor GetProperty(Type type, object? container, string name
     public abstract string GetEnumName(Type enumType, string name);
 
     public abstract string GetEnumValue(object enumValue);
+
+    public bool HasParseMethod(Type type) => false;
+
+    public object? Parse(string value, Type expectedType) => throw new NotImplementedException();
 }
diff --git a/src/Docfx.YamlSerialization/YamlDeserializer.cs b/src/Docfx.YamlSerialization/YamlDeserializer.cs
index 9080bea8fe5..fd3aa49eabe 100644
--- a/src/Docfx.YamlSerialization/YamlDeserializer.cs
+++ b/src/Docfx.YamlSerialization/YamlDeserializer.cs
@@ -65,6 +65,10 @@ public string GetEnumValue(object enumValue)
         {
             return TypeDescriptor.GetEnumValue(enumValue);
         }
+
+        public bool HasParseMethod(Type type) => false;
+
+        public object? Parse(string value, Type expectedType) => throw new NotImplementedException();
     }
 
     public YamlDeserializer(
diff --git a/test/Docfx.Build.SchemaDriven.Tests/MergeMarkdownFragmentsTest.cs b/test/Docfx.Build.SchemaDriven.Tests/MergeMarkdownFragmentsTest.cs
index 15909a250f9..018d0e951d3 100644
--- a/test/Docfx.Build.SchemaDriven.Tests/MergeMarkdownFragmentsTest.cs
+++ b/test/Docfx.Build.SchemaDriven.Tests/MergeMarkdownFragmentsTest.cs
@@ -183,7 +183,7 @@ markdown content
         Assert.True(File.Exists(_rawModelFilePath));
         var rawModel = JsonUtility.Deserialize<JObject>(_rawModelFilePath);
         Assert.Single(warningLogs);
-        Assert.Equal("Unable to parse markdown fragments: Encountered an invalid YAML code block: (Line: 1, Col: 1, Idx: 0) - (Line: 1, Col: 28, Idx: 27): Exception during deserialization", warningLogs.First().Message);
+        Assert.StartsWith("Unable to parse markdown fragments: Encountered an invalid YAML code block: (Line: 1, Col: 1, Idx: 0) - (Line: 1, Col: 28, Idx: 27): ", warningLogs.First().Message);
         Assert.Equal("2", warningLogs.First().Line);
         Assert.Null(rawModel["summary"]);
     }
diff --git a/test/Docfx.Build.Tests/TocDocumentProcessorTest.cs b/test/Docfx.Build.Tests/TocDocumentProcessorTest.cs
index d15c1ecf083..6f1cdf64e7d 100644
--- a/test/Docfx.Build.Tests/TocDocumentProcessorTest.cs
+++ b/test/Docfx.Build.Tests/TocDocumentProcessorTest.cs
@@ -911,7 +911,7 @@ public void LoadBadTocYamlFileShouldGiveLineNumber()
       href: x2.md";
         var toc = _fileCreator.CreateFile(content, FileType.YamlToc);
         var ex = Assert.Throws<DocumentException>(() => TocHelper.LoadSingleToc(toc));
-        Assert.Equal("toc.yml is not a valid TOC File: (Line: 3, Col: 10, Idx: 22) - (Line: 3, Col: 10, Idx: 22): While scanning a plain scalar value, found invalid mapping.", ex.Message);
+        Assert.StartsWith("toc.yml is not a valid TOC File: (Line: 3, Col: 10, Idx: 22) - (Line: 3, Col: 10, Idx: 22): ", ex.Message);
     }
 
     [Fact]