test.js

const withLoadingListData = (BaseComponent) =>
 class WithLoadingListData extends Component {
   state = {
     list: [],
     isLoading: true,
   }

    componentDidMount () {
      setTimeout(() => {
        this.setState({
          list: ['Apple', 'Orange', 'Pineapple'],
          isLoading: false,
        })
      }, 2000)
    }
    render () {
      return this.state.isLoading
        ? 'Loading...'
        : <BaseComponent list={this.state.list} />
    }
  }