Support deprecated methods

Author: Bashamega

inputfiles/addedTypes.jsonc

@@ -531,15 +531,6 @@
                     ]
                 }
             },
-            "DOMMatrixReadOnly": {
-                "methods": {
-                    "method": {
-                        "scaleNonUniform": {
-                            "deprecated": true
-                        }
-                    }
-                }
-            },
             "EventSource": {
                 "events": {
                     "event": [

inputfiles/patches/dom.kdl

@@ -15,3 +15,7 @@ enum InsertPosition {
 // ChildNode and ParentNode are actually defined as mixins, but because of their names they have historically been used as a sub-interface of Node.
 interface-mixin ChildNode extends=Node
 interface-mixin ParentNode extends=Node
+
+interface DOMMatrixReadOnly {
+    method scaleNonUniform deprecated=#true
+}

src/build/patches.ts

@@ -257,15 +257,24 @@ function handleMethod(child: Node): Partial<Method> {
     }
   }
 
-  const signature: Method["signature"] = [
-    {
-      param: params,
-      ...(typeNode
-        ? handleTyped(typeNode)
-        : { type: string(child.properties?.returns) }),
-    },
-  ];
-  return { name, signature };
+  const signature: { signature: Method["signature"] } | undefined =
+    params.length || typeNode || child.properties?.returns
+      ? {
+          signature: [
+            {
+              param: params,
+              ...(typeNode
+                ? handleTyped(typeNode)
+                : { type: string(child.properties?.returns) }),
+            },
+          ],
+        }
+      : undefined;
+  return {
+    name,
+    ...signature,
+    ...optionalMember("deprecated", "boolean", child.properties?.deprecated),
+  };
 }
 
 /**