Examine source code of BetterTravel

{
  "manifest_version": 3,
  "name": "BetterTravel",
  "version": "1.0",
  "description": "Better myIDTravel codes.",
  "browser_specific_settings": {
    "gecko": {
      "id": "bettertravel@mhashmi.com",
      "data_collection_permissions": {
        "required": [
          "locationInfo"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.myidtravel.com/*"
      ],
      "js": [
        "travelify.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  }
}