ESLint: Component definition is missing displayName (react/display-name)

Question

I'm using a react hook component with antd. When setting up columns for a table, the render function is giving me an ESLint error:

ESLint: Component definition is missing displayName (react/display-name)

I've tried adding displayName to the object but this doesn't work.

This is how the error looks:

This is the code:

const columns_payment_summary_table = [ 
    {
      title: SettlementConstants.LABEL_QUANTITY_SELECTED,
      dataIndex: 'group',
      key: 'group',
      render: text => (
        <span>{getCountForCountry(text)}</span>
      ),
    }
  ]

Can anyone help?

Here is full component code (well just the relevant bits)

import * as SettlementConstants from './constants'
import {connect} from 'react-redux'
import React, {useState, useEffect} from 'react'
import {Card, Table} from 'antd'
import PropTypes from 'prop-types'

const propTypes = {
  settlements: PropTypes.object.isRequired,
}

function Settlements(props) {

  const [selectedSettlementRows, setSelectedSettlementRows] = useState([])

  useEffect(() => {
    getSettlementDetails()
  }, [])

  function getSettlementDetails() {
    props.dispatch({
      type: SettlementConstants.GET_SETTLEMENT_PAYMENT_SUMMARIES,
      params: {
        'group_by': 'country_code',
        'type': SettlementConstants.CLAIM_SETTLEMENT,
      }
    })
    props.dispatch({
      type: SettlementConstants.GET_SETTLEMENT_PAYMENTS,
      params: {'type': SettlementConstants.CLAIM_SETTLEMENT, }
    })
  }

  const columns_payment_summary_table = [
    {
      title: SettlementConstants.LABEL_QUANTITY_SELECTED,
      dataIndex: 'group',
      key: 'group',
      render: text => (
        <span>{getCountForCountry(text)}</span>
      ),
    }
  ]

  function getCountForCountry(country_code){
    let selected_country = selectedSettlementRows.filter(function(row){
      return row.group === country_code
    })

    if(selected_country && selected_country.length > 0){
      return selected_country[0].ids.length
    } else {
      return 0
    }
  }

  return (
    <div>
      <Card
        title={SettlementConstants.LABEL_SETTLEMENT_SUMMARY}>
        <Table
          columns={columns_payment_summary_table}
          bordered={true}
          dataSource={props.settlements.settlement_payment_summaries}
          loading={props.settlements.settlement_payment_summaries_pending && !props.settlements.settlement_payment_summaries}
          rowKey={record => record.group}
        />
      </Card>
    </div>
  )
}

Settlements.propTypes = propTypes

const mapStateToProps = (state) => {
  return {settlements: state.settlementsReducer}
}

export default connect(
  mapStateToProps,
)(Settlements)

Answer 1

ESLint thinks you are defining a new component without setting any name to it.

This is explained because ESLint cannot recognize the render prop pattern because you are not directly writing this render prop into a component, but into an object.

You can either put the render prop directly into your jsx implementation of the <Column> component, or shut down the ESLint's error by doing this :

const columns_payment_summary_table = [ 
    {
        title: SettlementConstants.LABEL_QUANTITY_SELECTED,
        dataIndex: 'group',
        key: 'group',
        // eslint-disable-next-line react/display-name
        render: text => (
            <span>{getCountForCountry(text)}</span>
        ),
    }
]

I hope it helped ;)