Examine source code of FlixMonkey

{
  "manifest_version": 3,
  "name": "FlixMonkey",
  "version": "1.5.3",
  "description": "See IMDb, Metacritic, and Rotten Tomatoes ratings while browsing Netflix, HBO Max, and Disney+.",
  "homepage_url": "https://github.com/fran2889/flix-monkey",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://www.netflix.com/*",
    "https://play.hbomax.com/*",
    "https://www.disneyplus.com/*",
    "https://xmdbapi.com/*",
    "https://www.omdbapi.com/*",
    "https://v3.sg.media-imdb.com/*",
    "https://api.agregarr.org/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.netflix.com/*",
        "https://play.hbomax.com/*",
        "https://www.disneyplus.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "flixmonkey@fran",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  }
}