vue-cli3全面配置详解

chainWebpack: config => {
// 修复HMR
config.resolve.symlinks(true);
}
}

添加别名

const path = require('path');
const resolve = (dir) => path.join(__dirname, dir);
const IS_PROD = ['production', 'prod'].includes(process.env.NODE_ENV);
module.exports = {
  chainWebpack: config => {
    // 添加别名
    config.resolve.alias
     .set('@', resolve('src'))
     .set('assets', resolve('src/assets'))
     .set('components', resolve('src/components'))
     .set('layout', resolve('src/layout'))
     .set('base', resolve('src/base'))
     .set('static', resolve('src/static'));
  }
}

添加打包分析

const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin;
module.exports = {
  chainWebpack: config => {
    // 打包分析
    if (process.env.IS_ANALYZ) {
     config.plugin('webpack-report')
      .use(BundleAnalyzerPlugin, [{
       analyzerMode: 'static',
      }]);
    }
  }
}

配置externals

防止将某些 import 的包(package)打包到 bundle 中，而是在运行时(runtime)再去从外部获取这些扩展依赖

module.exports = {
  configureWebpack: config => {
    config.externals = {
     'vue': 'Vue',
     'element-ui': 'ELEMENT',
     'vue-router': 'VueRouter',
     'vuex': 'Vuex',
     'axios': 'axios'
    }
  }
}

去掉console.log

方法一：

const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
module.exports = {
  configureWebpack: config => {
    if (IS_PROD) {
      const plugins = [];
      plugins.push(
        new UglifyJsPlugin({
          uglifyOptions: {
            compress: {
              warnings: false,
              drop_console: true,
              drop_debugger: false,
              pure_funcs: ['console.log']//移除console
            }
          },
          sourceMap: false,
          parallel: true
        })
      );
      config.plugins = [
        ...config.plugins,
        ...plugins
      ];
    }
  }
}

方法二：使用babel-plugin-transform-remove-console插件

npm i --save-dev babel-plugin-transform-remove-console

在babel.config.js中配置

const plugins = [];
if(['production', 'prod'].includes(process.env.NODE_ENV)) {
 plugins.push("transform-remove-console")
}
module.exports = {
 presets: [["@vue/app",{"useBuiltIns": "entry"}]],
 plugins: plugins								 
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