Examine source code of Manage My Tabs - Tab Manager

{
  "manifest_version": 2,
  "name": "Manage My Tabs - Tab Manager",
  "description": "Manage My Tabs is an extension that gives the user a quick and simple way to manage their tabs.",
  "version": "0.4.1resigned1",
  "browser_action": {
    "default_icon": "images/icons/icon128.png"
  },
  "icons": {
    "16": "images/icons/icon16.png",
    "48": "images/icons/icon48.png",
    "128": "images/icons/icon128.png"
  },
  "permissions": [
    "tabs",
    "activeTab",
    "storage",
    "clipboardWrite"
  ],
  "background": {
    "scripts": [
      "scripts/src/bg.js"
    ]
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+M",
        "mac": "Alt+M"
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*"
      ],
      "js": [
        "scripts/lib/jquery/jquery-3.3.1.min.js",
        "scripts/lib/jquery/jquery-ui.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d3851178-4022-4b97-8746-08c051ba21bc}"
    }
  }
}