• port {MessagePort} The message port which will be transferred.

    • contextifiedSandbox {Object} A [contextified][] object as returned by the vm.createContext() method.

    • Returns: {MessagePort}

    Transfer a MessagePort to a different [vm][] Context. The original port object will be rendered unusable, and the returned MessagePort instance will take its place.

    The returned MessagePort will be an object in the target context, and will inherit from its global Object class. Objects passed to the [port.onmessage()][] listener will also be created in the target context and inherit from its global Object class.

    However, the created MessagePort will no longer inherit from [EventTarget][], and only [port.onmessage()][] can be used to receive events using it.