JS IDL2K spaces in functional types

libraries/tools/idl2k/src/main/kotlin/gen.kt

@@ -67,7 +67,7 @@ fun generateFunctions(repository: Repository, function: Operation): List<Generat
                 it.copy(type = callbackFunction.parameters
                         .map { it.copy(type = mapType(repository, it.type)) }
                         .map { it.formatFunctionTypePart() }
-                        .join(",", "(", ") -> ${mapType(repository, callbackFunction.returnType)}")
+                        .join(", ", "(", ") -> ${mapType(repository, callbackFunction.returnType)}")
                         .copyNullabilityFrom(it.type))
             }
             else -> it

libraries/tools/idl2k/src/main/kotlin/idl.kt

@@ -290,7 +290,7 @@ class DefinitionVisitor(val extendedAttributes: List<ExtendedAttribute>, val nam
         name = getName(ctx)
 
         val function = OperationVisitor(memberAttributes.toList()).visit(ctx)
-        typedefType = "(${function.parameters.map { it.formatFunctionTypePart() }.join(",")}) -> ${function.returnType}"
+        typedefType = "(${function.parameters.map { it.formatFunctionTypePart() }.join(", ")}) -> ${function.returnType}"
 
         memberAttributes.clear()
         return defaultResult()

libraries/tools/idl2k/src/main/kotlin/typeMappings.kt

@@ -60,7 +60,7 @@ data class FunctionType(val parameterTypes : List<Attribute>, val returnType : S
 val FunctionType.arity : Int
     get() = parameterTypes.size()
 val FunctionType.text : String
-    get() = "(${parameterTypes.map { it.formatFunctionTypePart() }.join(",")}) -> ${returnType}"
+    get() = "(${parameterTypes.map { it.formatFunctionTypePart() }.join(", ")}) -> ${returnType}"
 
 fun FunctionType(text : String) : FunctionType {
     val (parameters, returnType) = text.split("->".toRegex()).map { it.trim() }.filter { it != "" }