d2-ui
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# `.state([key]) => Any`
Returns the state hash for the root node of the wrapper. Optionally pass in a prop name and it
will return just that value.
#### Arguments
1. `key` (`String` [optional]): If provided, the return value will be the `this.state[key]` of the
root component instance.
#### Example
```jsx
const wrapper = mount(<MyComponent />);
expect(wrapper.state().foo).to.equal(10);
expect(wrapper.state('foo')).to.equal(10);
```
#### Related Methods
- [`.props() => Object`](props.md)
- [`.prop(key) => Any`](prop.md)
- [`.context([key]) => Any`](context.md)