Examine source code of Closest Clickable

{
  "manifest_version": 3,
  "name": "Closest Clickable Extension",
  "version": "3.5.1",
  "description": "Fake cursor that is attracted to the closest clickable element.",
  "permissions": [
    "activeTab",
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "closest-clickable-content.css"
      ]
    }
  ],
  "action": {
    "default_title": "Closest Clickable",
    "default_icon": {
      "48": "icon_small.jpg"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "icons": {
    "48": "icon_small.jpg"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b5799f85-bb28-48fd-926a-4bd18b3ce649}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  }
}