@webdevs.firefox.com on Bluesky

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Firefox for Web Developers

webdevs.firefox.com

did:plc:6jsvyhtxrkb4d2wrlwd2avmm

The CloseWatcher API landed in Firefox 149, making it easy to listen for platform-specific 'dismiss' signals. Here's how it works:

2026-03-25T15:42:45.457Z