Fixes DanielXMoore#218. Optional type void => shorthand (DanielXMoore…

…#225)
Irian3x3 · Jan 13, 2023 · ac77cec · ac77cec
1 parent 1b81c39
commit ac77cec
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diff --git a/source/parser.hera b/source/parser.hera
@@ -4466,7 +4466,12 @@ TypeBinaryOp
     return { $loc, token: "&" }
 
 FunctionType
-  Parameters __ "=>" Type
+  Parameters __ "=>" Type?:type ->
+    if (type) {
+      return $0
+    }
+
+    return [...$0, "void"]
 
 TypeArguments
   "<" TypeArgument+ __ ">" ->

diff --git a/test/types/function.civet b/test/types/function.civet
@@ -22,6 +22,17 @@ describe "[TS] function", ->
     (x) : number => x
   """
 
+  testCase """
+    interface method with void => shorthand
+    ---
+    interface Array<T>
+      listen(fu: =>): void
+    ---
+    interface Array<T> {
+      listen(fu: ()=>void): void
+    }
+  """
+
   testCase """
     no parens is application
     ---