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"use strict";
function createRealm(t) {
return new Promise(resolve => {
const iframe = document.createElement("iframe");
t.add_cleanup(() => { iframe.remove(); });
iframe.onload = () => { resolve(iframe.contentWindow); };
iframe.name = "dummy";
iframe.src = "support/dummy-iframe.html";
document.body.append(iframe);
});
}