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<script>
let eventCounter = 0;
onmessage = e => {
if (e.data == "getValue") {
parent.postMessage(localStorage.foo, "*");
return;
}
if (e.data == "setValue") {
localStorage.foo = "tracker-" + Math.random();
return;
}
if (e.data == "getEvents") {
parent.postMessage(eventCounter, "*");
return;
}
if (e.data == "reload") {
window.location.reload();
}
};
addEventListener("storage", _ => {
++eventCounter;
});
</script>
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