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<!DOCTYPE html>
<meta name=help href="https://privacycg.github.io/storage-partitioning/">
<title>Helper frame</title>
<script>
const usageDetails = async () => {
return (await navigator.storage.estimate())
.usageDetails.serviceWorkerRegistrations || 0
}
let details = {};
window.addEventListener("message", async event => {
if (event.data === "get-details") {
details.source = "same-site";
details.init = await usageDetails();
event.source.postMessage(details, event.source.origin);
}
});
window.addEventListener("load", async () => {
if (parent.opener) {
details.source = "cross-site";
details.init = await usageDetails();
parent.opener.postMessage(details, parent.opener.origin);
}
});
window.parent.postMessage("iframe-is-ready", window.parent.origin);
</script>
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