Examine source code of Wolter

{
  "name": "Wolter",
  "version": "0.1.2",
  "description": "Improve your experience on wolt.com with extended functionality.",
  "permissions": [
    "tabs",
    "storage"
  ],
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "images/w/icon16.png",
      "32": "images/w/icon32.png",
      "48": "images/w/icon48.png"
    }
  },
  "icons": {
    "16": "images/w/icon16.png",
    "32": "images/w/icon32.png",
    "48": "images/w/icon48.png"
  },
  "content_scripts": [
    {
      "js": [
        "content/content.js"
      ],
      "css": [
        "content/content.css"
      ],
      "matches": [
        "https://wolt.com/*"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "wolter@example.com"
    }
  },
  "manifest_version": 2
}