Examine source code of TabScroll

{
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "version": "0.2.3",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en",
  "permissions": [
    "tabs",
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "tab-classifier.js",
      "background.js"
    ]
  },
  "action": {
    "default_icon": {
      "16": "icons/tabscroll-v2-16.png",
      "32": "icons/tabscroll-v2-32.png",
      "48": "icons/tabscroll-v2-48.png"
    },
    "default_title": "__MSG_openTabScroll__"
  },
  "commands": {
    "toggle-tabscroll": {
      "suggested_key": {
        "default": "Ctrl+Shift+Y",
        "mac": "Command+Shift+K"
      },
      "description": "__MSG_openTabScroll__"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "overlay.html",
        "tokens.css",
        "overlay.css",
        "i18n.js",
        "overlay.js",
        "icons/*",
        "icons/flags/*.svg"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ]
    }
  ],
  "icons": {
    "16": "icons/tabscroll-v2-16.png",
    "32": "icons/tabscroll-v2-32.png",
    "48": "icons/tabscroll-v2-48.png",
    "128": "icons/tabscroll-v2-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tabscroll@cpudados.github.io",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}