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const is_worker = !('window' in self);
const parent_or_self = is_worker ? self : self.parent;
function startWorkerAndObserveReports(worker_url, wait_for_report) {
const worker = new Worker(worker_url);
const result_promise = new Promise(resolve => {
worker.onmessage = _ => resolve('success');
worker.onerror = _ => resolve('error');
});
worker.postMessage("postMessage('reply to owner from worker');");
const report_promise = new Promise(resolve => {
const observer = new ReportingObserver(reports => {
observer.disconnect();
resolve(reports.map(r => r.toJSON()));
});
observer.observe();
});
if (wait_for_report) {
Promise.all([result_promise, report_promise]).then(results => {
parent_or_self.postMessage(results[1]);
});
} else {
result_promise.then(result => {
parent_or_self.postMessage([]);
});
}
}
if (is_worker) {
onmessage = e => {
startWorkerAndObserveReports(e.data.worker_url, e.data.wait_for_report);
};
}