前几天接到了用vue重构某个业务模块的需求，常规开发不做讨论，但是在打包时需要排除业务中使用的某个第三方依赖包。 代码如下:

//main.js
import Vue from 'vue';
import Cesium from 'cesium/Cesium'; //必须全局引入，某个组件中引入忽略无效
import Widgets from 'cesium/Widgets/widgets.css'Vue.prototype.Cesium = Cesium;
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//vue.config.js(如果没有就在根目录下新建)const cesiumSource = "node_modules/cesium/Source";
const cesiumWorkers = '../Build/Cesium/Workers';
module.exports = {chainWebpack: config => {//定义别名.resolve.alias.set('cesium', path.resolve(__dirname, cesiumSource)).end().end()},configureWebpack: config => {let settings = {};if (process.env.NODE_ENV === 'production') { // 使用环境变量，区分生产和开发模式settings = {plugins: [new webpack.DefinePlugin({'CESIUM_BASE_URL': JSON.stringify('static')}),new CopyWebpackPlugin([{from: path.join(cesiumSource, cesiumWorkers),to: 'static/Workers'}]),new CopyWebpackPlugin([{from: path.join(cesiumSource, 'Assets'),to: 'static/Assets'}]),new CopyWebpackPlugin([{from: path.join(cesiumSource, 'Widgets'),to: 'static/Widgets'}])],externals: {/***key: main.js中全局引入的路径*value: 全局暴露出来的对象名*/"cesium/Cesium": "Cesium" //忽略js"cesium/Widgets/widgets.css": "Widgets" //忽略css}}} else {settings = {plugins: [new webpack.DefinePlugin({'CESIUM_BASE_URL': JSON.stringify('')}),new CopyWebpackPlugin([{from: path.join(cesiumSource, cesiumWorkers),to: 'Workers'}]),new CopyWebpackPlugin([{from: path.join(cesiumSource, 'Assets'),to: 'Assets'}]),new CopyWebpackPlugin([{from: path.join(cesiumSource, 'Widgets'),to: 'Widgets'}]),]}}return settings
}
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that's all