export default graphql(addItem, {
  options: {
    fetchPolicy: 'cache-and-network'
  },
  props: props => ({
    onAdd: item =>
      props.mutate({
        variables: item,
        optimisticResponse: {
          __typename: 'Mutation',
          addItem: { ...item, __typename: 'Item' }
        },
        update: (proxy, { data: { addItem } }) => {
          let data = proxy.readQuery({ query: listItems });
          data.listItems.items.push(addItem);
          proxy.writeQuery({ query: listItems, data });
        }
      })
  })
})(AddItem);