fix: don't generate U1 if an union is resolved as a single possible v…

…alue [converter]
glutinum-org · May 7, 2024 · dcd5968 · dcd5968
1 parent 78fc0ae
commit dcd5968
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Showing 3 changed files with 16 additions and 0 deletions.
diff --git a/src/Glutinum.Converter/Transform.fs b/src/Glutinum.Converter/Transform.fs
@@ -200,6 +200,9 @@ let rec private transformType
 
         if isOptional && others.Length = 1 then
             FSharpType.Option(transformType context others.Head)
+        // Don't wrap in a U1 if there is only one case
+        else if others.Length = 1 then
+            transformType context others.Head
         else
             {
                 Attributes = []

diff --git a/tests/specs/references/unionType/singleUnionResolved.d.ts b/tests/specs/references/unionType/singleUnionResolved.d.ts
@@ -0,0 +1 @@
+export type ColorInfo = number | false;
diff --git a/tests/specs/references/unionType/singleUnionResolved.fsx b/tests/specs/references/unionType/singleUnionResolved.fsx
@@ -0,0 +1,12 @@
+module rec Glutinum
+
+open Fable.Core
+open Fable.Core.JsInterop
+open System
+
+type ColorInfo =
+    float
+
+(***)
+#r "nuget: Fable.Core"
+(***)