13675 2011-08-04 18:27:33 +0000 MessageEvent::ports should be a nullable platform array object for interop 2011-08-05 15:24:16 +0000 1 1 1 Unclassified WebAppsWG Web Messaging (editor: Ian Hickson) unspecified PC Windows NT RESOLVED WONTFIX P2 normal --- 1 travil ian ian mike public-webapps public-webapps-bugzilla oldest_to_newest 54183 0 travil 2011-08-04 18:27:33 +0000 The ports property of MessageEvent is currently defined as: readonly attribute MessagePort[] ports; however, IE10, Chrome, and Safari all return null when no ports were provided. (Opera returns an empty array as per the spec.) Not sure what Firefox is returning... For better interop, consider changing the type of the ports property to a nullable platform array object: readonly attribute MessagePort[]? ports; (with accompaning changes in the algorithms) 54240 1 ian 2011-08-05 15:24:16 +0000 It would be much better to return an empty array. Returning null or an array is a great way to have programming errors.