service-worker

Communication between service workers and the clients browser window can be achieved by simply doing: self.clients.matchAll().then((clients) => { clients.forEach((client) => client.postMessage({ msg: "Hello from SW" })) }) The variable self is a reserved keyword in a service worker context. It references the global scope of the current worker execution scope and has some useful properties. It is like the window object of a JavaScript browser context. In the above snippet, all the clients that run the service worker are loaded, then the ....