Examine source code of New Tab Same Group Fix

{
  "manifest_version": 3,
  "name": "New Tab Same Group Fix",
  "version": "1.9.0",
  "description": "Automatically adds new tabs to the same group as the active tab in Firefox.",
  "icons": {
    "128": "asset/new-tab-same-group-128.png"
  },
  "permissions": [
    "tabs",
    "storage",
    "tabGroups"
  ],
  "background": {
    "scripts": [
      "dist/background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_title": "New Tab Same Group",
    "default_icon": "asset/new-tab-same-group-128.png",
    "default_popup": "dist/options/index.html"
  },
  "options_ui": {
    "page": "dist/options/index.html",
    "open_in_tab": false
  },
  "sidebar_action": {
    "default_icon": {
      "16": "asset/sidebar-16.png",
      "32": "asset/sidebar-32.png"
    },
    "default_title": "new group tab",
    "default_panel": "dist/sidebar/index.html",
    "open_at_install": false
  },
  "commands": {
    "open-standard-new-tab": {
      "suggested_key": {
        "default": "Alt+Shift+T",
        "mac": "Alt+Shift+T"
      },
      "description": "Open a standard new tab (ungrouped)"
    },
    "open-standard-tab-in-new-group": {
      "suggested_key": {
        "default": "Alt+Shift+G",
        "mac": "Alt+Shift+G"
      },
      "description": "Open a standard new tab in new group"
    },
    "toggle-sidebar": {
      "suggested_key": {
        "default": "Alt+Shift+S",
        "mac": "Alt+Shift+S"
      },
      "description": "toggle sidebar"
    },
    "open-standard-new-tab-in-new-group": {
      "suggested_key": {
        "default": "Alt+Shift+G",
        "mac": "Alt+Shift+G"
      },
      "description": "Open a standard new tab in new group"
    },
    "cancel-pending-grouping": {
      "suggested_key": {
        "default": "Ctrl+Shift+U",
        "mac": "Alt+Shift+U"
      },
      "description": "Cancel grouping during the 1-second window"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "addon@new-tab-same-group-fix.dev",
      "strict_min_version": "139.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}