launch.json

{
  "version": "0.2.0",
  "configurations": [
    {
      "type": "extensionHost",
      "request": "launch",
      "name": "Launch Client",
      "runtimeExecutable": "${execPath}",
      "args": [
        "--extensionDevelopmentPath=${workspaceRoot}/packages/client",
        "${workspaceRoot}/example"
      ],
      "stopOnEntry": false,
      "sourceMaps": true,
      "outFiles": ["${workspaceRoot}/packages/client/dist/**/*.js"],
      "preLaunchTask": "npm: build"
    },
    {
      "type": "node",
      "request": "attach",
      "name": "Attach to Server",
      "address": "localhost",
      "protocol": "inspector",
      "port": 6009,
      "sourceMaps": true,
      "outFiles": ["${workspaceRoot}/packages/server/dist/**/*.js"],
      "timeout": 30000
    }
  ],
  "compounds": [
    {
      "name": "Client + Server",
      "configurations": ["Launch Client", "Attach to Server"]
    }
  ]
}