Examine source code of PlayClean for TV 2

{
  "manifest_version": 3,
  "name": "PlayClean for TV 2",
  "short_name": "PlayClean",
  "version": "1.0.0",
  "description": "Unofficial Firefox extension that removes TV 2 Play video ads by redirecting Yospace SSAI playback. No analytics or data collection.",
  "icons": {
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking"
  ],
  "host_permissions": [
    "https://play.tv2.no/*",
    "https://stream-od.akamaized.net/*",
    "https://sponsorship.public.tv2.no/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "PlayClean for TV 2",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "64": "icons/icon-64.png"
    }
  },
  "incognito": "not_allowed",
  "browser_specific_settings": {
    "gecko": {
      "id": "{7d8bb8db-4a5e-4ec6-b00a-cac86d7ee51f}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}