const channel = new BroadcastChannel("anne was here"); | |
channel.onmessage = ({ data }) => { | |
if(data === "hi" || data === "sw-success") { | |
return; | |
} else if(data instanceof SharedArrayBuffer) { | |
channel.postMessage("dw-success"); | |
} | |
} | |
channel.postMessage("hi"); |