Examine source code of TugStopper

{
  "manifest_version": 2,
  "name": "TugStopper",
  "version": "1.0.1",
  "description": "Blocks adult websites and enforces safe search on Google, Bing, DuckDuckGo and YouTube to support your recovery.",
  "permissions": [
    "storage",
    "tabs",
    "webNavigation",
    "webRequest",
    "webRequestBlocking",
    "http://127.0.0.1:47384/*",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "TugStopper"
  },
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tugstopper@tugstopper.app",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}