Add compatibility method for JSValue.function(_:JSClosure)

Author: kateinoigakukun

Example/JavaScriptKitExample/Sources/JavaScriptKitExample/main.swift

@@ -12,6 +12,6 @@ buttonElement.innerText = "Click me!"
 let listener = JSClosure { _ in
     alert("Swift is running on browser!")
 }
-buttonElement.onclick = .function(listener)
+buttonElement.onclick = .object(listener)
 
 _ = document.body.appendChild(buttonElement)

Sources/JavaScriptKit/JSValue.swift

@@ -144,6 +144,11 @@ extension JSValue {
     public static func function(_ body: @escaping ([JSValue]) -> JSValue) -> JSValue {
         .object(JSClosure(body))
     }
+
+    @available(*, deprecated, renamed: "object", message: "JSClosure is not a subclass of JSFunction now")
+    public static func function(_ closure: JSClosure) -> JSValue {
+        .object(closure)
+    }
 }
 
 extension JSValue: ExpressibleByStringLiteral {