Examine source code of Tab Switch Shortcuts

{
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "short_name": "__MSG_extensionShortName__",
  "version": "1.1",
  "description": "__MSG_extensionDescription__",
  "default_locale": "en",
  "developer": {
    "name": "Tobias Neuschäfer",
    "url": "https://github.com/tobiasneuschaefer/Tab-Switch-Shortcuts"
  },
  "permissions": [
    "tabGroups"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "commands": {
    "focus-right-tab": {
      "suggested_key": {
        "default": "Alt+Period"
      },
      "description": "__MSG_focusRightTabCommand__"
    },
    "focus-left-tab": {
      "suggested_key": {
        "default": "Alt+Comma"
      },
      "description": "__MSG_focusLeftTabCommand__"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tab-switch-shortcuts@tobiasneuschaefer",
      "strict_min_version": "139.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}