Examine source code of Live Followed Streams

{
  "manifest_version": 3,
  "name": "Live Followed Streams",
  "description": "Track the Twitch streams you follow that are currently live.",
  "version": "5.0.2",
  "action": {
    "default_popup": "popup.html",
    "default_title": "Live Followed Streams",
    "default_icon": {
      "16": "images/icons/icon16.png",
      "32": "images/icons/icon32.png",
      "48": "images/icons/icon48.png",
      "128": "images/icons/icon128.png"
    }
  },
  "icons": {
    "16": "images/icons/icon16.png",
    "32": "images/icons/icon32.png",
    "48": "images/icons/icon48.png",
    "128": "images/icons/icon128.png"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "permissions": [
    "storage",
    "alarms"
  ],
  "host_permissions": [
    "https://api.twitch.tv/*",
    "https://id.twitch.tv/*",
    "https://www.twitch.tv/*"
  ],
  "background": {
    "scripts": [
      "assets/background.js"
    ],
    "type": "module"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "live-followed-streams@local.extension",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "personallyIdentifyingInfo"
        ]
      }
    }
  }
}