Examine source code of LevelsTix

{
  "manifest_version": 2,
  "name": "LEVELSTIX",
  "description": "The official LEVELSTIX extension to help you get tickets.",
  "version": "1.1.4",
  "icons": {
    "64": "UI/assets/images/logo.png"
  },
  "browser_action": {
    "default_icon": "UI/assets/images/logo.png",
    "default_title": "LEVELSTIX",
    "default_popup": "UI/popup.html"
  },
  "permissions": [
    "storage",
    "cookies",
    "proxy",
    "webRequest",
    "webRequestBlocking",
    "browsingData",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "UI/loading.html"
  ],
  "background": {
    "scripts": [
      "background-scripts/onInstall.js",
      "background-scripts/proxy.js",
      "background-scripts/setCookie.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "91.1.0",
      "id": "{670b659f-089c-4fe0-928a-b8b6839b44de}"
    }
  }
}