Examine source code of Authenticator App

{
  "manifest_version": 2,
  "name": "Authenticator App",
  "version": "1.2.4",
  "description": "Secure two-factor authentication app for iPhone, iPad, iPod, Apple Watch and Mac.",
  "mode": "production",
  "permissions": [
    "storage",
    "tabs",
    "contextMenus",
    "clipboardWrite"
  ],
  "background": {
    "page": "background.html"
  },
  "icons": {
    "48": "icon-48.png",
    "64": "icon-64.png",
    "96": "icon-96.png",
    "128": "icon-128.png",
    "256": "icon-256.png",
    "512": "icon-512.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "toolbar-unpaired-16.png",
      "19": "toolbar-unpaired-19.png",
      "32": "toolbar-unpaired-32.png",
      "38": "toolbar-unpaired-38.png",
      "48": "toolbar-unpaired-48.png",
      "72": "toolbar-unpaired-72.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "*.png",
    "*.css",
    "*.svg",
    "*.html"
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "{62bf634f-cfd8-47fc-bc20-e811d62b7293}"
    }
  }
}