Suppress GCal Alerts

A minimal Chrome extension that silences window.alert() calls on Google Calendar.

Files

manifest.json — extension configuration
background.js — registers the content script into the page's main JS context
suppress.js — overrides window.alert with a no-op

Installation

Clone or download this folder.
Go to chrome://extensions and enable Developer mode.
Click "Load unpacked" and select this folder.

Notes

The script must run in the MAIN world (the page's own JS context) to override window.alert effectively. Declaring world: "MAIN" in manifest.json has a known Chrome bug and does not work reliably, so the content script is registered programmatically from the service worker instead.