Examine source code of Authenticator App

{
  "manifest_version": 3,
  "default_locale": "en",
  "name": "Authenticator App",
  "description": "__MSG_desc_manifest__",
  "version": "4.5.0",
  "icons": {
    "16": "images/logo_16.png",
    "32": "images/logo_32.png",
    "48": "images/logo_48.png",
    "96": "images/logo_96.png",
    "128": "images/logo_128.png",
    "256": "images/logo_256.png",
    "512": "images/logo_512.png",
    "1024": "images/logo_1024.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_scripts.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/logo_toolbar_16.png",
      "32": "images/logo_toolbar_32.png",
      "48": "images/logo_toolbar_48.png",
      "72": "images/logo_toolbar_72.png",
      "128": "images/logo_toolbar_128.png"
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "nativeMessaging"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "js/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    },
    {
      "resources": [
        "images/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    },
    {
      "resources": [
        "assets/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  },
  "minimum_chrome_version": "116",
  "browser_specific_settings": {
    "gecko": {
      "id": "{6a8d2a0a-09e9-41ba-a4af-211ea0914d96}",
      "strict_min_version": "109.0"
    }
  }
}