配置vue的jsx写法以及postcss

• 安装postcss, autoprefixer, babel-loader, babel-core

npm i postcss-loader autoprefixer babel-loader babel-core

• 项目根目录下新建.babelrc, .postcss.config.js两个文件
• postcss.config.js 如下

const autoprefixer = require('autoprefixer')

module.exports = {
    "plugins": {
        // 增加浏览器前缀
        "autoprefixer": {}
    }
}

• .babelrc可以用于写render函数和jsx

{
    "presets": [
        "env"
    ],
    "plugins": [
        "transform-vue-jsx"
    ]
}

• 安装这两个插件

npm i babel-preset-env babel-plugin-transform-vue-jsx
# 还需安装
npm i babel-plugin-syntax-jsx babel-helper-vue-jsx-merge-props

• 对webpack.config.js增加jsx和的配置
  (jsx类型的文件使用babel-loader，styl类型的文件增加postcss-loader和相应选项)

const path = require('path')
const HTMLPlugin = require('html-webpack-plugin')
const webpack = require('webpack')

// 判断是否为dev开发模式
const isDev = process.env.NODE_ENV === 'development'

const config = {
    target: 'web',
    entry: path.join(__dirname, 'src/index.js'),
    output: {
        filename: 'bundle.js',
        path:path.join(__dirname, 'dist')
    },
    module: {
        rules: [
            {
                test: /\.vue$/,
                loader: 'vue-loader'
            },
            // 更新
            {
                test: /\.jsx$/,
                loader: 'babel-loader'
            },
            {       
                test: /\.css$/,
                use: [
                    'style-loader',
                    'css-loader'
                ]
            },
            {
                test: /\.styl/,
                use: [
                    'style-loader',
                    'css-loader',
                    // 更新
                    {
                        loader: 'postcss-loader',
                        options: {
                            sourceMap: true
                        }
                    },
                    'stylus-loader'
                ]
            },
            {
                test: /\.(gif|jpg|jpeg|png|svg)$/,
                use: [
                    {
                        loader: 'url-loader',
                        options: {
                            limit: 1024,
                            name: '[name].[ext]'
                        }
                    }
                ]
            }
        ]
    },
    plugins: [
        new webpack.DefinePlugin({
            'process.env': {
                NODE_ENV: isDev ? '"development"' : '"production"'
            }
        }),
        new HTMLPlugin()
    ]
}

if (isDev) {
    config.devtool = '#cheap-module-eval-source-map'
    config.devServer = {
        port: 8000,
        host: '0.0.0.0',
        overlay: {
            errors: true
        },
        hot: true
    },
    config.plugins.push(
        new webpack.HotModuleReplacementPlugin(),
        new webpack.NoEmitOnErrorsPlugin()
    )
}

module.exports = config