Examine source code of Fuck Popups

{
  "manifest_version": 2,
  "name": "Fuck Popups",
  "version": "1.2resigned1",
  "description": "Toggle blocking of all popup windows.",
  "icons": {
    "48": "icons/finger.svg",
    "96": "icons/finger.svg"
  },
  "permissions": [
    "browserSettings",
    "storage"
  ],
  "browser_action": {
    "browser_style": true,
    "default_icon": "icons/finger.svg",
    "default_title": "Fuck Popups"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "applications": {
    "gecko": {
      "strict_min_version": "57.0",
      "id": "{f74e8a57-89de-4c5d-8791-67b1149855bf}"
    }
  }
}