Examine source code of VS Code Web

{
  "manifest_version": 2,
  "name": "VS Code Web",
  "version": "1.0",
  "description": "An extension to open a GitHub repo in VS Code Web",
  "permissions": [
    "activeTab"
  ],
  "icons": {
    "48": "icon.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{35b26d2b-df11-4243-84ea-daef3ee00901}"
    }
  }
}