Examine source code of NoGhostKitchen

{
  "manifest_version": 2,
  "name": "NoGhostKitchen",
  "version": "0.0.1",
  "description": "Remove listings from Just Eat that have more than one kitchen at their address.",
  "homepage_url": "https://voxelfox.co.uk",
  "icons": {
    "128": "icons/ghost.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.just-eat.co.uk/area/*"
      ],
      "js": [
        "noghostkitchen.js"
      ]
    }
  ],
  "browser_action": {
    "default_title": "NoGhostKitchen Settings",
    "default_popup": "options.html"
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "permissions": [
    "https://uk.api.just-eat.io/",
    "storage"
  ],
  "host_permissions": [
    "https://uk.api.just-eat.io/"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "noghostkitchen@voxelfox.co.uk"
    }
  }
}