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使用vue-cli3搭建项目，在项目根目录vue.config.js文件配置相对应的devtool,集体devtool配置详情介绍可以参考我之前写的webpack文章 Devtool | webpack

//vue.config.js
module.exports = {...configureWebpack: {devtool: 'source-map'}
}

npm跑起项目后，在Chrome浏览器F12在控制台就可以进行相对应的断点调试了

注：devtool 设置成eval-cheap-module-source-map打包编译速度会比source-map更快，所以建议在开发环境设置成eval-cheap-module-source-map,生成环境设置成cheap-module-source-map,更多配置可以查看webpack文档

二、VS Code断点调试

步骤一：安装Debugger for Chrome插件

步骤二：配置launch.json文件

{// 使用 IntelliSense 了解相关属性。 // 悬停以查看现有属性的描述。// 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387"version": "0.2.0","configurations": [{"type": "chrome","request": "launch","name": "针对 localhost 启动 Chrome","breakOnLoad": true,"url": "http://localhost:8080","webRoot": "${workspaceFolder}","skipFiles": ["<node_internals>/**/*.js", //跳过node核心模块代码"${workspaceFolder}/node_modules/**","${workspaceFolder}/node_modules/**/*.js","${workspaceFolder}/src/node_modules/**/*.js","${workspaceFolder}/src/asserts/js/webpack:/app/webpack/**", //忽略webpack源码"${workspaceFolder}/src/asserts/js/webpack:/app/node_modules/**" //忽略各种包文件源码],"sourceMapPathOverrides": { //指定生成的sourceMap途径，参看浏览器生成的 .目录和src目录"webpack:///src/*": "${webRoot}/*","webpack:///./src/*": "${webRoot}/*"}}]
}

1、使用插件调试：Microsoft Edge Tools for VS Code

（1）、在是VSCode中下载"Microsoft Edge Tools for VS Code"插件：

（2）、使用"Microsoft Edge Tools for VS Code"插件做调试：

a、点击侧边栏上的"Microsoft Edge Tools for VS Code"插件图标，会提示你在"launch.json"中生成相关的调试配置信息，生成这个文件之后，可以添加其他的调试配置信息，但是请不要删除任何东西，否则插件启动调试的时候就会提示你重新生成与它相关的配置信息。

{"configurations": [{"type": "pwa-msedge","name": "Launch Microsoft Edge","request": "launch","runtimeArgs": ["--remote-debugging-port=9222"],"url": "/home/huanzi/.vscode/extensions/ms-edgedevtools.vscode-edge-devtools-2.1.1/out/startpage/index.html", // Provide your project's url to finish configuring"presentation": {"hidden": true}},{"type": "pwa-msedge","name": "Launch Microsoft Edge in headless mode","request": "launch","runtimeArgs": ["--headless","--remote-debugging-port=9222"],"url": "/home/huanzi/.vscode/extensions/ms-edgedevtools.vscode-edge-devtools-2.1.1/out/startpage/index.html", // Provide your project's url to finish configuring"presentation": {"hidden": true}},{"type": "vscode-edge-devtools.debug","name": "Open Edge DevTools","request": "attach","url": "/home/huanzi/.vscode/extensions/ms-edgedevtools.vscode-edge-devtools-2.1.1/out/startpage/index.html", // Provide your project's url to finish configuring"presentation": {"hidden": true}}],"compounds": [{"name": "Launch Edge Headless and attach DevTools","configurations": ["Launch Microsoft Edge in headless mode","Open Edge DevTools"]},{"name": "Launch Edge and attach DevTools","configurations": ["Launch Microsoft Edge","Open Edge DevTools"]}]
}

 b、配置vue项目的vue.config.js配置的文件，3.x版本以上的VUE-CLI就用以下配置：

module.exports = {configureWebpack: {devtool: "source-map",},
};

c、启动项目之后，对"launch.json"做如下修改，即可启用插件像IDEA一样调试项目。一定要在原来的基础上增加，主要是增加"url": "http://localhost:8080",``"webRoot": "${workspaceFolder}"这两个配置：
"url": "http://localhost:8080"：这个就是启动项目后，自己的项目访问路劲。
"webRoot": "${workspaceFolder}"：这个是项目源码位置，注意，新版的VsCode中${workspaceFolder}已经包含了src目录，这里直接写${workspaceFolder}就可以，如果启动调试的时候提示无法 连接连接到目标，那么试着改成${workspaceFolder}/src。

{"configurations": [{"type": "pwa-msedge","name": "Launch Microsoft Edge","request": "launch","runtimeArgs": ["--remote-debugging-port=9222"],"url": "http://localhost:8080","webRoot": "${workspaceFolder}","presentation": {"hidden": true},"smartStep": true, //自动跳过未映射的代码"skipFiles": ["<node_internals>/**/*.js", //跳过node核心模块代码"${workspaceFolder}/node_modules/**/*.js","${workspaceFolder}/src/node_modules/**/*.js","${workspaceFolder}/src/asserts/js/webpack:/app/webpack/**", //忽略webpack源码"${workspaceFolder}/src/asserts/js/webpack:/app/node_modules/**" //忽略各种包文件源码] //跳过文件},{"type": "pwa-msedge","name": "Launch Microsoft Edge in headless mode","request": "launch","runtimeArgs": ["--headless","--remote-debugging-port=9222"],"url": "http://localhost:8080","webRoot": "${workspaceFolder}","presentation": {"hidden": true},"smartStep": true, //自动跳过未映射的代码"skipFiles": ["<node_internals>/**/*.js", //跳过node核心模块代码"${workspaceFolder}/node_modules/**/*.js","${workspaceFolder}/src/node_modules/**/*.js","${workspaceFolder}/src/asserts/js/webpack:/app/webpack/**", //忽略webpack源码"${workspaceFolder}/src/asserts/js/webpack:/app/node_modules/**" //忽略各种包文件源码] //跳过文件},{"type": "vscode-edge-devtools.debug","name": "Open Edge DevTools","request": "attach","url": "http://localhost:8080","webRoot": "${workspaceFolder}","presentation": {"hidden": true},"smartStep": true, //自动跳过未映射的代码"skipFiles": ["<node_internals>/**/*.js", //跳过node核心模块代码"${workspaceFolder}/node_modules/**/*.js","${workspaceFolder}/src/node_modules/**/*.js","${workspaceFolder}/src/asserts/js/webpack:/app/webpack/**", //忽略webpack源码"${workspaceFolder}/src/asserts/js/webpack:/app/node_modules/**" //忽略各种包文件源码] //跳过文件}],"compounds": [{"name": "Launch Edge Headless and attach DevTools","configurations": ["Launch Microsoft Edge in headless mode","Open Edge DevTools"]},{"name": "Launch Edge and attach DevTools","configurations": ["Launch Microsoft Edge","Open Edge DevTools"]}]
}

d、点击"Microsoft Edge Tools for VS Code"插件Launch Project按钮，开始代码调试

2、使用VSCode自带调试功能做调试

（1）、配置vue项目的vue.config.js配置的文件，3.x版本以上的VUE-CLI就用以下配置：

module.exports = {configureWebpack: {devtool: "source-map",},
};

（2）、启动项目后，点击侧边栏中的调试按钮，会提示你生成"launch.json"文件，对"launch.json"做如下修改，即可启用插件像IDEA一样调试项目。
注意经过个人验证：使用VSCode自带的调试功能的时候，"webRoot"需要配置成 "${workspaceFolder}/src"这样才行，否则就是报错不能连接到目标的错误而无法启动调试。

{"configurations": [{"name": "Launch Chrome","request": "launch","type": "chrome","url": "http://localhost:8080","webRoot": "${workspaceFolder}/src"}]
}

3）、接下来开始调试项目，其他和插件使用一样，唯一的区别在于：插件将浏览器集成在VSCode中，而VSCode自带的调试功能如果不下载Chrome插件，那么就只能调起外部浏览器调试。