componentWillReceiveProps(nextProps: ButtonProps) {
    const currentLoading = this.props.loading;
    const loading = nextProps.loading;

    if (currentLoading) {
      clearTimeout(this.delayTimeout);
    }

    if (typeof loading !== 'boolean' && loading && loading.delay) {
      this.delayTimeout = window.setTimeout(() => this.setState({ loading }), loading.delay);
    } else {
      this.setState({ loading });
    }
  }