如何用vscode调试express

{
    "version": "0.2.0",
    "configurations": [
        {
            "type": "node",
            "request": "launch",
            "name": "启动程序",
            "program": "${workspaceRoot}/bin/www"
        },
        {
            "type": "node",
            "request": "attach",
            "name": "附加到端口",
            "address": "localhost",
            "port": 5858
        }
    ]
}

设置launch.json如上即可