Shared worker is teminated on reloading page

问题

Why is Shared Worker dead on reloading page? It must've revived. How can I fix this issue?

Before reloading

After reloading (Press F5 on example.com)

Parent worker

var port = new SharedWorker('/app/worker-5n1261e73b.js').port;
port.onmessage = function(e){
    console.log(e.data);
};
port.start();

worker-5n1261e73b.js

onconnect = function(e){
    var port = e.ports[0];
    port.onmessage = function(e){
         console.log(e.data);
    };
    port.start();
    port.postMessage('Connected');
};

来源：https://stackoverflow.com/questions/28913545/shared-worker-is-teminated-on-reloading-page