Examine source code of Stream Notifier - Picarto

{
  "action": {
    "default_icon": "icons/picarto.svg",
    "default_popup": "html/popup.html"
  },
  "background": {
    "scripts": [
      "js/common.js",
      "js/background.js"
    ],
    "type": "module"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fa7c8df4-bef7-4cc8-b00b-cb4c8ec9988c}",
      "strict_min_version": "112.0"
    },
    "gecko_android": {
      "strict_min_version": "120.0"
    }
  },
  "description": "Picarto Stream Notification Extension",
  "host_permissions": [
    "https://api.picarto.tv/*"
  ],
  "icons": {
    "16": "icons/picarto.svg",
    "48": "icons/picarto.svg",
    "96": "icons/picarto.svg",
    "128": "icons/picarto.svg",
    "256": "icons/picarto.svg"
  },
  "manifest_version": 3,
  "name": "Stream Notifier - Picarto",
  "options_ui": {
    "page": "html/options.html",
    "open_in_tab": true
  },
  "permissions": [
    "webRequest",
    "storage",
    "notifications",
    "identity",
    "alarms",
    "idle"
  ],
  "version": "1.0.0"
}