Basic Safari extension

Open in Yattee/SafariWebExtensionHandler.swift

@@ -0,0 +1,15 @@
+import os.log
+import SafariServices
+
+final class SafariWebExtensionHandler: NSObject, NSExtensionRequestHandling {
+    func beginRequest(with context: NSExtensionContext) {
+        let item = context.inputItems[0] as! NSExtensionItem
+        let message = item.userInfo?[SFExtensionMessageKey]
+        os_log(.default, "Received message from browser.runtime.sendNativeMessage: %@", message as! CVarArg)
+
+        let response = NSExtensionItem()
+        response.userInfo = [SFExtensionMessageKey: ["Response to": message]]
+
+        context.completeRequest(returningItems: [response], completionHandler: nil)
+    }
+}