# TreeExpandDetail

> _Since v0.1.1_

Event detail emitted when a tree node is expanded or collapsed *

## Properties

| Property | Type | Description |
| -------- | ---- | ----------- |
| `key` | <code>string</code> | The row key that was toggled |
| `row` | <code>T</code> | The original row data |
| `expanded` | <code>boolean</code> | Whether the row is now expanded |
| `depth` | <code>number</code> | Depth level of the row |
| `expandedKeys?` | <code>string[]</code> | All currently expanded keys after the operation |