Examine source code of ScrollBlock

{
  "manifest_version": 3,
  "name": "ScrollBlock",
  "version": "1.1.1",
  "default_locale": "en",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "idle",
    "alarms"
  ],
  "host_permissions": [
    "*://*.instagram.com/*",
    "*://*.facebook.com/*",
    "*://*.youtube.com/*",
    "*://*.tiktok.com/*",
    "*://*.x.com/*",
    "*://*.twitter.com/*",
    "*://*.reddit.com/*",
    "*://*.linkedin.com/*",
    "*://*.pinterest.com/*",
    "*://*.threads.net/*",
    "*://*.threads.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.instagram.com/*",
        "*://*.facebook.com/*",
        "*://*.youtube.com/*",
        "*://*.tiktok.com/*",
        "*://*.x.com/*",
        "*://*.twitter.com/*",
        "*://*.reddit.com/*",
        "*://*.linkedin.com/*",
        "*://*.pinterest.com/*",
        "*://*.threads.net/*",
        "*://*.threads.com/*"
      ],
      "css": [
        "styles/theme.css",
        "styles/global.css"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "contact@scrollblock.online",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}