Examine source code of Close Shorts Tabs

{
  "manifest_version": 3,
  "name": "Close youtube and vk",
  "version": "2.0",
  "description": "Automatically closes tab when you click on youtube link .",
  "permissions": [
    "tabs"
  ],
  "host_permissions": [
    "*://*.youtube.com/*",
    "*://*.vk.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "close-shorts@grishmir.ru",
      "strict_min_version": "109.0"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "bonk.mp3"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "icons": {
    "48": "icons/48.png",
    "96": "icons/96.png"
  }
}