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# ignore-this-changeset Differential Revision: https://phabricator.services.mozilla.com/D36052 --HG-- extra : source : b5be5b4f4b47c256e28a29f665dc754f6407ee7f
16 lines
326 B
JavaScript
16 lines
326 B
JavaScript
self.addEventListener("message", async e => {
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let clients = await self.clients.matchAll({
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type: "window",
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includeUncontrolled: true,
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});
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let hasWindow = false;
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for (let client of clients) {
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if (e.data == client.url) {
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hasWindow = true;
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break;
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}
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}
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e.source.postMessage(hasWindow);
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});
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