Available on js
ExtendableMessageEvent interface of the
ServiceWorker API represents the event object of a
message event fired on a service worker (when a channel message is received on the
ServiceWorkerGlobalScope from another context) — extends the lifetime of such events.
Returns the event's data. It can be any data type.
Represents, in server-sent events, the last event ID of the event source.
Returns the origin of the
ServiceWorkerClient that sent the message
Returns the array containing the
MessagePort objects representing the ports of the associated message channel.
read onlysource:EitherType<Client, EitherType<ServiceWorker, MessagePort>>
Returns a reference to the service worker that sent the message.
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