Examine source code of Long Request Notifier

{
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "version": "1.2.0",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en",
  "author": "Romelium",
  "homepage_url": "https://github.com/romelium/long-request-notifier",
  "permissions": [
    "webRequest",
    "storage",
    "notifications",
    "tabs"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "action": {
    "default_title": "__MSG_actionTitle__",
    "default_popup": "options.html"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self' data:;"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "long-request-notifier@romelium.cc",
      "strict_min_version": "109.0"
    }
  }
}