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

Question

我正在使用一个带有 antd 的 React 钩子(Hook)组件。为表格设置列时，渲染函数给我一个 ESLint 错误:

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

我已经尝试将 displayName 添加到对象，但这不起作用。

这是错误的样子:

这是代码:

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

有人能帮忙吗？

这是完整的组件代码(只是相关的部分)

import * as FooConstants 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 = {
  foos: PropTypes.object.isRequired,
}

function Foos(props) {

  const [selectedFooRows, setSelectedFooRows] = useState([])

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

  function getFooDetails() {
    props.dispatch({
      type: FooConstants.GET_FOO_PAYMENT_SUMMARIES,
      params: {
        'group_by': 'country_code',
        'type': FooConstants.CLAIM_FOO,
      }
    })
    props.dispatch({
      type: FooConstants.GET_FOO_PAYMENTS,
      params: {'type': FooConstants.CLAIM_FOO, }
    })
  }

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

  function getCountForCountry(country_code){
    let selected_country = selectedFooRows.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={FooConstants.LABEL_FOO_SUMMARY}>
        <Table
          columns={columns_payment_summary_table}
          bordered={true}
          dataSource={props.foos.foo_payment_summaries}
          loading={props.foos.foo_payment_summaries_pending && !props.foos.foo_payment_summaries}
          rowKey={record => record.group}
        />
      </Card>
    </div>
  )
}

Foos.propTypes = propTypes

const mapStateToProps = (state) => {
  return {foos: state.foosReducer}
}

export default connect(
  mapStateToProps,
)(Foos)

Answer 1

ESLint 认为您正在定义一个新组件而没有为其设置任何名称。

这是因为 ESLint 无法识别 render prop pattern 的解释因为你不是直接将这个 render prop 写到一个组件中，而是写到一个对象中。

您可以将 render prop 直接进入 <Column> 的 jsx 实现组件，

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

或者通过这样做来关闭 ESLint 的错误:

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>
        ),
    }
]

希望对您有所帮助;)