带有React的ESLint会给出“ no-unused-vars”错误

JavaScript React.js

木何鱼

2020-03-16

我已经设定eslinteslint-plugin-react

当我运行ESLint时,linter会no-unused-vars为每个React组件返回错误。

我假设它没有意识到我正在使用JSX或React语法。有任何想法吗?

例:

app.js

import React, { Component } from 'react';
import Header from './header.js';

export default class App extends Component {
  render() {
    return (
      <div>
        <Header />
        {this.props.children}
      </div>
    );
  }
}

短绒错误:

/my_project/src/components/app.js
  1:8  error  'React' is defined but never used   no-unused-vars
  2:8  error  'Header' is defined but never used  no-unused-vars

这是我的.eslintrc.json文件:

{
    "env": {
        "browser": true,
        "es6": true
    },
    "extends": "eslint:recommended",
    "parserOptions": {
        "ecmaFeatures": {
            "experimentalObjectRestSpread": true,
            "jsx": true
        },
        "sourceType": "module"
    },
    "plugins": [
        "react"
    ],
    "rules": {
        "react/jsx-filename-extension": [1, { "extensions": [".js", ".jsx"] }],
        "indent": [
            "error",
            2
        ],
        "linebreak-style": [
            "error",
            "unix"
        ],
        "quotes": [
            "error",
            "single"
        ],
        "semi": [
            "error",
            "always"
        ]
    }
}

第1797篇《带有React的ESLint会给出“ no-unused-vars”错误》来自Winter(https://github.com/aiyld/aiyld.github.io)的站点

2个回答
凯小胖 2020.03.16

由于我是在谷歌搜索时发现的,因此您应该知道,此简单规则足以防止出现此消息:

react/jsx-uses-react

react/recommended组规则增加了许多其他的规则,你可能不希望。

梅小哥 2020.03.16

要解决此唯一问题而无需从react/recommendedinstall 添加新规则eslint-plugin-react

npm install eslint-plugin-react --save-dev

添加.eslintrc.js

"plugins": ["react"]

和:

"rules": {   
     "react/jsx-uses-react": "error",   
     "react/jsx-uses-vars": "error" 
}

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