React Native Flatlist with Typescript:Property 'data' is optional in type but required in type 'Readonly

Here's my FlatList:

<FlatList    {...omit(this.props, ["id","loading",    ])}    nestedScrollEnabled    renderItem={this.renderItem}    onEndReached={this.onEndReached}    ListFooterComponent={this.renderFooter}  />

Here's a renderItem:

  @autobind  renderItem<    I extends ILVITem,    IX extends { toString: () => string }>({ item, index }: { item: I; index: IX }) {    if (!isFunction(this.props.itemConfig)) {      return null;    }    const itemConfig = this.props.itemConfig(item);    if (isEmpty(itemConfig)) {      return null;    }    return (<ListRow        throwData={item}        title={this.titleState(item, itemConfig)}        subtitle={this.subtitleState(item, itemConfig)}      />    );  }

My problem:

 Property 'data' is optional in type '{ nestedScrollEnabled: true; renderItem: <I extends ILVITem, IX extends { toString: () => string; }>({ item, index }: { item: I; index: IX; }) => Element | null; onEndReached: () => void; ListFooterComponent: () => Element | null; ... 15 more ...; onPress?: (() => any) | undefined; }' but required in type 'Readonly<FlatListProps<string>>'.

I don't see any reason of this error. Is there any way to make data not optional?

in ILVITem interface data is not optional.