React多页面应用9(webpack4 引入eslint代码检查)
React多页面应用9(webpack4 引入eslint代码检查)
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1、React多页面应用1(webpack4 开发环境搭建,包括热更新,api转发等)---2018.04.04
2、React多页面应用2(webpack4 处理CSS及图片,引入postCSS,及图片处理等)---2018.04.08
3、React多页面应用3(webpack4 多页面实现)---2018.04.09
4、React多页面应用4(webpack4 提取第三方包及公共组件)---2018.04.10
5、React多页面应用5(webpack4 多页面自动化生成多入口文件)---2018.04.11
6、React多页面应用6(webpack4 开发环境打包性能小提升)---2018.04.12
7、React多页面应用7(webpack4 生产环境配置)---2018.04.13
8、React多页面应用8(webpack4 gulp自动化发布到多个环境,生成版本号,打包成zip等)---2018.04.16
9、React多页面应用9(webpack4 引入eslint代码检查)---2018.04.17
开发环境:Windows 8,node v8.9.1,npm 5.5.1,WebStorm 2017.2.2
团队开发,如何保持代码风格统一,引入eslint代码检查是一个不错的选择!
当然现在也有更好的替代方案就是微软的TypeScript,
今天先讲讲eslint
1、安装依赖
npm i -D eslint-config-react-app@2.1.0 eslint-loader@2.0.0 eslint-plugin-react@7.7.0 eslint-plugin-import@2.10.0 react-dev-utils@5.0.0 eslint-plugin-jsx-a11y@5.1.1 babel-eslint@8.2.2 eslint-plugin-flowtype@2.46.1 eslint@4.19.1
2、修改 package.json
添加如下代码
"eslintConfig": {
"extends": "react-app",
"rules": {
"import/no-webpack-loader-syntax": 0,
"no-script-url": 0,
"jsx-a11y/href-no-hash": 2
}
}
3、修改 webpack.dev.conf.js
头部引入
const eslintFormatter = require('react-dev-utils/eslintFormatter');配置内 加入如下代码
{
test: /\.(js|jsx)$/,
enforce: 'pre',
use: [
{
options: {
formatter: eslintFormatter,
eslintPath: require.resolve('eslint'),
// @remove-on-eject-begin
baseConfig: {
extends: [require.resolve('eslint-config-react-app')],
},
//ignore: false,
useEslintrc: false,
// @remove-on-eject-end
},
loader: require.resolve('eslint-loader'),
},
],
include: [
path.resolve(__dirname, "../../app")
],
exclude: [
path.resolve(__dirname, "../../node_modules")
],
},
完整代码
const webpack = require('webpack');//引入webpack
const opn = require('opn');//打开浏览器
const merge = require('webpack-merge');//webpack配置文件合并
const path = require("path");
const baseWebpackConfig = require("./webpack.base.conf");//基础配置
const webpackFile = require("./webpack.file.conf");//一些路径配置
const eslintFormatter = require('react-dev-utils/eslintFormatter');
let config = merge(baseWebpackConfig, {
/*设置开发环境*/
mode: 'development',
output: {
path: path.resolve(webpackFile.devDirectory),
filename: 'js/[name].js',
chunkFilename: "js/[name].js",
publicPath: ''
},
optimization: {
//包清单
runtimeChunk: {
name: "manifest"
},
//拆分公共包
splitChunks: {
cacheGroups: {
//项目公共组件
common: {
chunks: "initial",
name: "common",
minChunks: 2,
maxInitialRequests: 5,
minSize: 0
},
//第三方组件
vendor: {
test: /node_modules/,
chunks: "initial",
name: "vendor",
priority: 10,
enforce: true
}
}
}
},
plugins: [
/*设置热更新*/
new webpack.HotModuleReplacementPlugin(),
],
module: {
rules: [
{
test: /\.(js|jsx)$/,
use: [
'cache-loader',
'babel-loader',
],
include: [
path.resolve(__dirname, "../../app"),
path.resolve(__dirname, "../../entryBuild")
],
exclude: [
path.resolve(__dirname, "../../node_modules")
],
},
{
test: /\.(js|jsx)$/,
enforce: 'pre',
use: [
{
options: {
formatter: eslintFormatter,
eslintPath: require.resolve('eslint'),
// @remove-on-eject-begin
baseConfig: {
extends: [require.resolve('eslint-config-react-app')],
},
//ignore: false,
useEslintrc: false,
// @remove-on-eject-end
},
loader: require.resolve('eslint-loader'),
},
],
include: [
path.resolve(__dirname, "../../app")
],
exclude: [
path.resolve(__dirname, "../../node_modules")
],
},
{
test: /\.(css|pcss)$/,
loader: 'style-loader?sourceMap!css-loader?sourceMap!postcss-loader?sourceMap',
exclude: /node_modules/
},
{
test: /\.(png|jpg|gif|ttf|eot|woff|woff2|svg|swf)$/,
loader: 'file-loader?name=[name].[ext]&outputPath=' + webpackFile.resource + '/'
}
]
},
/*设置api转发*/
devServer: {
host: '0.0.0.0',
port: 8080,
hot: true,
inline: true,
contentBase: path.resolve(webpackFile.devDirectory),
historyApiFallback: true,
disableHostCheck: true,
proxy: [
{
context: ['/api/**', '/u/**'],
target: 'http://192.168.12.100:8080/',
secure: false
}
],
/*打开浏览器 并打开本项目网址*/
after() {
opn('http://localhost:' + this.port);
}
}
});
module.exports = config;至此我们就配置完了
4、执行命令查看
npm run dev
ok! 一切正常!
我们来测试下!
在 app\component\index\Index.jsx 组件中 加一个没有用到的变量!
这时浏览器会给出警告提示
删除这个变量，浏览器警告会自动清除！
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