Examine source code of HMO

{
  "manifest_version": 3,
  "name": "HMO",
  "version": "5.0",
  "description": "Prosta wtyczka do ukrywania filmów 'Tylko dla wspierających' na YouTube.",
  "author": "nyorbee",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "*://*.youtube.com/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon48.png"
    }
  },
  "icons": {
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "hmo@nyorbee.dev"
    }
  }
}