zed/styles/.zed/settings.json

// Folder-specific settings
//
// For a full list of overridable settings, and general information on folder-specific settings,
// see the documentation: https://docs.zed.dev/configuration/configuring-zed#folder-specific-settings
{
  "languages": {
    "TypeScript": {
      "tab_size": 4
    }
  }
}