背景

看@vant/weapp源码，发现源代码和发包的代码不是同一份，源代码会经过一系列的编译转成最后的发包文件夹dist和lib,想看一下编译过程，于是研究了开发工具的源码调试

vscode调试

看了执行npm run dev，是执行了build/compiler.js这个文件

打开compiler.js，快捷键ctrl + shift + d 出现一个弹框，选node.js：

企业微信截图_17204324417715.png 新建一个create a launch.json file,加入配置：

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Attach",
            "port": 9229,
            "request": "attach",
            "skipFiles": [
                "<node_internals>/**"
            ],
            "type": "node"
        },
        {"name":"Python Debugger: Current File","type":"debugpy","request":"launch","program":"${file}","console":"integratedTerminal"},{
            "type": "node",
            "request": "launch",
            "name": "Launch Program",
            "skipFiles": [
                "<node_internals>/**"
            ],
            "program": "${workspaceFolder}\\build\\compiler.js"
        }
    ]
}