Examine source code of Validate Phone Number Pro

{
  "manifest_version": 2,
  "name": "Phone Number Validator Pro",
  "version": "0.0.5",
  "description": "Advanced phone number validation with fraud detection, batch processing, and smart formatting",
  "browser_specific_settings": {
    "gecko": {
      "id": "vpn@ext.dakidarts.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "contextMenus",
    "notifications",
    "https://checky-verify-phone-number.p.rapidapi.com/*",
    "https://cdn.dakidarts.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_action": {
    "default_title": "Phone Number Validator Pro",
    "default_popup": "sidebar.html"
  },
  "sidebar_action": {
    "default_title": "Phone Validator Pro",
    "default_panel": "sidebar.html",
    "open_at_install": false
  },
  "commands": {
    "validate-selection": {
      "suggested_key": {
        "default": "Ctrl+Shift+V",
        "mac": "Command+Shift+V"
      },
      "description": "Validate selected phone number"
    },
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+P",
        "mac": "Command+Shift+P"
      }
    }
  },
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "web_accessible_resources": [
    "version.json",
    "sidebar.html"
  ]
}