首先使用npm或者其他包管理工具安装依赖插件：

npm install monaco-editor --save
npm install monaco-editor-nls --save
npm install monaco-editor-webpack-plugin --save
npm install monaco-editor-esm-webpack-plugin --save-dev
 

推荐安装的依赖版本对应：package.json 

{
  "dependencies": {
    "monaco-editor": "^0.20.0",
    "monaco-editor-nls": "^2.0.0",
    "monaco-editor-webpack-plugin": "^1.9.1",
  },
  "devDependencies": {
    "monaco-editor-esm-webpack-plugin": "^2.0.0"
  }
}

• webpack.config.js 添加配置：（此处使用vue-cil3.0 配置在vue.config.js里面）

• const MonacoWebpackPlugin = require('monaco-editor-esm-webpack-plugin');
  
  module.exports = {
  	configureWebpack: {
  		module: {
  			rules: [{
  				test: /\.js/,
  				enforce: 'pre',
  				include: /node_modules[\\\/]monaco-editor[\\\/]esm/,
  				use: MonacoWebpackPlugin.loader
  			}]
  		},
  		plugins: [
  			new MonacoWebpackPlugin()
  		]
  	}
  }

  此处需要引入monaco-editor-esm-webpack-plugin，引入monaco-editor-webpack-plugin无法汉化成功

• 设置语言包

  // 汉化 monaco
  import { setLocaleData } from "monaco-editor-nls"
  import zh_CN from "monaco-editor-nls/locale/zh-hans"
  setLocaleData(zh_CN)
  
  
  //先汉化语言，再加载monaco才能汉化成功，使用import方式无法汉化
  //需要使用require方式引入monaco-editor
  //import * as monaco from 'monaco-editor' 
  const monaco = require("monaco-editor/esm/vs/editor/editor.api"); 
  
  

  设置完以上配置后，汉化成功效果如下：