From 1c26502130fb6523e9567310931de5f812cc21db Mon Sep 17 00:00:00 2001
From: Bashamega <adambashaahmednaji@gmail.com>
Date: Sat, 10 Jan 2026 09:56:41 +0200
Subject: [PATCH 1/3] Support records in KDL

---
 inputfiles/addedTypes.jsonc        | 13 -------------
 inputfiles/patches/wasm-js-api.kdl |  6 ++++++
 src/build/patches.ts               |  8 ++++++--
 3 files changed, 12 insertions(+), 15 deletions(-)
 create mode 100644 inputfiles/patches/wasm-js-api.kdl

diff --git a/inputfiles/addedTypes.jsonc b/inputfiles/addedTypes.jsonc
index 64861d798..b69899a60 100644
--- a/inputfiles/addedTypes.jsonc
+++ b/inputfiles/addedTypes.jsonc
@@ -425,19 +425,6 @@
                 "legacyNamespace": "WebAssembly",
                 "overrideType": "Function | Global | Memory | Table"
             },
-            {
-                "name": "Exports",
-                "legacyNamespace": "WebAssembly",
-                "type": "record",
-                "subtype": [
-                    {
-                        "type": "DOMString"
-                    },
-                    {
-                        "type": "ExportValue"
-                    }
-                ]
-            },
             {
                 "name": "ModuleImports",
                 "legacyNamespace": "WebAssembly",
diff --git a/inputfiles/patches/wasm-js-api.kdl b/inputfiles/patches/wasm-js-api.kdl
new file mode 100644
index 000000000..969df3846
--- /dev/null
+++ b/inputfiles/patches/wasm-js-api.kdl
@@ -0,0 +1,6 @@
+typedef Exports legacyNamespace=WebAssembly {
+    type record {
+        type DOMString
+        type ExportValue
+    }
+}
\ No newline at end of file
diff --git a/src/build/patches.ts b/src/build/patches.ts
index ac72d1742..d8d178534 100644
--- a/src/build/patches.ts
+++ b/src/build/patches.ts
@@ -59,11 +59,15 @@ function handleSingleTypeNode(type: Node): DeepPartial<Typed> {
   if (!isTyped) {
     throw new Error("Expected a type node");
   }
+  const typeValue = type.values[0];
   const subType =
     type.children.length > 0 ? handleTyped(type.children) : undefined;
   return {
-    ...optionalMember("type", "string", type.values[0]),
-    subtype: subType,
+    ...optionalMember("type", "string", typeValue),
+    subtype:
+      typeValue == "record" && typeof subType?.type !== "string"
+        ? subType?.type
+        : subType,
     ...optionalMember("nullable", "boolean", type.properties?.nullable),
   };
 }

From ac3e8198c1d8f24f77dde62e073c877fa287675b Mon Sep 17 00:00:00 2001
From: Kagami Sascha Rosylight <saschanaz@outlook.com>
Date: Sat, 10 Jan 2026 20:35:51 +0100
Subject: [PATCH 2/3] reindent

---
 inputfiles/patches/wasm-js-api.kdl | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/inputfiles/patches/wasm-js-api.kdl b/inputfiles/patches/wasm-js-api.kdl
index 969df3846..867f64783 100644
--- a/inputfiles/patches/wasm-js-api.kdl
+++ b/inputfiles/patches/wasm-js-api.kdl
@@ -1,6 +1,6 @@
 typedef Exports legacyNamespace=WebAssembly {
-    type record {
-        type DOMString
-        type ExportValue
-    }
-}
\ No newline at end of file
+  type record {
+    type DOMString
+    type ExportValue
+  }
+}

From 48b14209a8c6c77e80aab44a51f47fcbd7a854b9 Mon Sep 17 00:00:00 2001
From: Bashamega <adambashaahmednaji@gmail.com>
Date: Sun, 11 Jan 2026 14:02:25 +0200
Subject: [PATCH 3/3] Add isUnion

---
 inputfiles/patches/wasm-js-api.kdl | 2 +-
 src/build/patches.ts               | 5 ++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/inputfiles/patches/wasm-js-api.kdl b/inputfiles/patches/wasm-js-api.kdl
index 867f64783..8ec4446c7 100644
--- a/inputfiles/patches/wasm-js-api.kdl
+++ b/inputfiles/patches/wasm-js-api.kdl
@@ -1,5 +1,5 @@
 typedef Exports legacyNamespace=WebAssembly {
-  type record {
+  type record union=#true {
     type DOMString
     type ExportValue
   }
diff --git a/src/build/patches.ts b/src/build/patches.ts
index d8d178534..50e15d318 100644
--- a/src/build/patches.ts
+++ b/src/build/patches.ts
@@ -62,12 +62,11 @@ function handleSingleTypeNode(type: Node): DeepPartial<Typed> {
   const typeValue = type.values[0];
   const subType =
     type.children.length > 0 ? handleTyped(type.children) : undefined;
+  const isUnion = typeof type.properties.union == "boolean";
   return {
     ...optionalMember("type", "string", typeValue),
     subtype:
-      typeValue == "record" && typeof subType?.type !== "string"
-        ? subType?.type
-        : subType,
+      isUnion && typeof subType?.type !== "string" ? subType?.type : subType,
     ...optionalMember("nullable", "boolean", type.properties?.nullable),
   };
 }