ESLint 与 React 给出 `no-unused-vars` 错误

我已经设置了eslint & eslint-plugin-react.

当我运行 ESLint 时，linter 返回no-unused-vars每个 React 组件的错误。

我假设它没有识别出我正在使用 JSX 或 React 语法。有任何想法吗？

例子：

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 file:

{
    "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"
        ]
    }
}

首先，安装以下模块npm install --save-dev eslint-plugin-react.

然后，在你的.eslintrc.json, under extends，包括以下插件：

'extends': [
    'plugin:react/recommended'
]

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