Web Outlook Custom Notifications

manifest.json

{
  "manifest_version": 3,
  "name": "Web Outlook Custom Notifications",
  "description": "Change the notification sounds for new emails and calendar reminders for Web Outlook",
  "version": "1.0.3",
  "permissions": [
    "storage",
    "unlimitedStorage",
    "notifications"
  ],
  "_background": {
    "service_worker": "background.js",
    "type": "module"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "injected.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    },
    {
      "resources": [
        "icons_calendar_notification.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "https://outlook.live.com/mail/*",
        "https://outlook.office.com/mail/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "update_url": "https://edge.microsoft.com/extensionwebstorebase/v1/crx"
}