message: Fix missing type for state
diff: @@ -41,7 +41,7 @@ export default class BackdropPanel extends React.PureComponent<IProps, IState> {
  };
  private style = getComputedStyle(document.documentElement);
  - public state = {};
  + public state: IState = {};
  public componentDidMount() {
  UIStore.instance.on("SpacePanel", this.onResize);
  