replacesClientId property

String get replacesClientId

@AvailableInWorkers("service")

The replacesClientId read-only property of the FetchEvent interface is the Client.id of the Client that is being replaced during a page navigation.

For example, when navigating from page A to page B replacesClientId is the ID of the client associated with page A. It can be an empty string when navigating from about:blank to another page, as about:blank's client will be reused, rather than be replaced.

Additionally, if the fetch isn't a navigation, replacesClientId will be an empty string. This could be used to access/communicate with a client that will imminently be replaced, right before a navigation.

Implementation

external String get replacesClientId;