Examine source code of Google Meet Auto Leaver

{
  "name": "6sAutoLeaveMeet: Google Meet Auto Leaver",
  "description": "Automatically leave a Google meet when a certain threshold (number of participants leave within 6 seconds) is met!",
  "version": "1",
  "manifest_version": 3,
  "background": {
    "scripts": [
      "./js/background.js"
    ]
  },
  "icons": {
    "128": "./img/alm-128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "scripting"
  ],
  "host_permissions": [
    "https://meet.google.com/*",
    "http://meet.google.com/*"
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "6sAutoLeaveMeet@example.com"
    }
  }
}