SortKey is Invariant now.

dotnet · ilonatommy · Jan 19, 2024 · Dec 29, 2023 · Dec 29, 2023 · Dec 29, 2023
commit 709da38f7b3cc003ca5c1c3d8247f78bf3f8cea0
diff --git a/docs/design/features/globalization-hybrid-mode.md b/docs/design/features/globalization-hybrid-mode.md
@@ -19,6 +19,8 @@ Hybrid has higher priority than sharding or custom modes, described in globaliza
 
 **SortKey**
 
+In HybridGlobalization mode Invariant way of SortKey calculation is used. From this reason, the following APIs will work in the same way as they do when `Invariant=true`:
+
 Affected public APIs:
 - System.Globalization.CompareInfo.GetSortKey
 - System.Globalization.CompareInfo.GetSortKeyLength
@@ -43,8 +45,6 @@ Indirectly affected APIs (the list might not be complete):
 - System.Net.Mail.MailAddress.GetHashCode
 - System.Xml.Xsl.XslCompiledTransform.Transform
 
-Web API does not have an equivalent, so they throw `PlatformNotSupportedException`.
-
 **Case change**
 
 Affected public APIs:

diff --git a/src/libraries/System.Private.CoreLib/src/System/Globalization/CompareInfo.cs b/src/libraries/System.Private.CoreLib/src/System/Globalization/CompareInfo.cs
@@ -1451,8 +1451,9 @@ private SortKey CreateSortKeyCore(string source, CompareOptions options) =>
             GlobalizationMode.UseNls ?
                 NlsCreateSortKey(source, options) :
 #if TARGET_BROWSER
+            // JS cannot create locale-sensitive sort key, use invaraint functions instead.
             GlobalizationMode.Hybrid ?
-                throw new PlatformNotSupportedException(GetPNSEText("SortKey")) :
+                InvariantCreateSortKey(source, options) :
 #endif
                 IcuCreateSortKey(source, options);