Examine source code of Smart Web Locker

{
  "manifest_version": 2,
  "name": "Smart Web Locker",
  "version": "2.3",
  "description": "Kunci situs tertentu dengan PIN dan efek blur penuh.",
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/lock.png"
    },
    "default_title": "Smart Web Locker"
  },
  "options_ui": {
    "page": "option.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "locker.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "smartweblocker@example.com",
      "strict_min_version": "109.0"
    }
  }
}