fix: improve enum handling in getTypeFromSchema function

This commit adds a check to ensure that the enum array is not empty before processing it in the getTypeFromSchema function. This enhancement prevents potential issues when dealing with empty enums and maintains type safety in the generated TypeScript code.

Author: owinter86

src/utils.ts

@@ -85,6 +85,13 @@ export function getTypeFromSchema(
 
 	// Handle enums as union types
 	if ("enum" in schema && schema.enum) {
+		if (Object.values(schema.enum)?.length > 0) {
+			return (
+				Object.values(schema.enum)
+					.map((e) => (typeof e === "string" ? `'${e}'` : e))
+					.join(" | ") + nullable
+			);
+		}
 		return schema.enum.map((e) => (typeof e === "string" ? `'${e}'` : e)).join(" | ") + nullable;
 	}