Examine source code of Veiligwebshoppen

{
  "name": "Veiligwebshoppen.nl",
  "version": "0.0.0.2",
  "description": "",
  "permissions": [
    "tabs",
    "storage"
  ],
  "background": {
    "scripts": [
      "browser-polyfill.min.js",
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/vws-icon-empty-16.png",
      "32": "images/vws-icon-empty-32.png",
      "48": "images/vws-icon-empty-48.png",
      "128": "images/vws-icon-empty.png"
    }
  },
  "icons": {
    "16": "images/16x16-logo.png",
    "32": "images/32x32-logo.png",
    "48": "images/48x48-logo.png",
    "128": "images/128x128-logo.png"
  },
  "content_security_policy": "script-src 'self' https://app-vs-prod.herokuapp.com; object-src 'self'",
  "manifest_version": 2
}