Examine source code of Ruwaq | Sound

{
  "manifest_version": 3,
  "name": "Ruwaq | Sound",
  "version": "2.0.0",
  "description": "Control el audio de tus pestañas",
  "browser_specific_settings": {
    "gecko": {
      "id": "ruwaq-sound@rpezo.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "scripting",
    "alarms"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/ruwaq16.png",
    "48": "icons/ruwaq48.png",
    "128": "icons/ruwaq128.png"
  },
  "action": {
    "default_popup": "index.html",
    "default_icon": {
      "16": "icons/ruwaq16.png",
      "48": "icons/ruwaq48.png",
      "128": "icons/ruwaq128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "contentScript.js"
      ],
      "run_at": "document_idle"
    }
  ]
}