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function OnMessage(e) {
if (e.data.msg == "whoareyou") {
if ("ServiceWorker" in self) {
self.clients.matchAll().then(function (clients) {
clients[0].postMessage({ result: "serviceworker" });
});
} else {
port.postMessage({ result: "sharedworker" });
}
}
}
var port;
onconnect = function (e) {
port = e.ports[0];
port.onmessage = OnMessage;
port.start();
};
onmessage = OnMessage;