Thanks @a47ae, as you comment, I edit as below, it works as I expected. Thanks again.

{
“type”: “node”,
“request”: “launch”,
“name”: “Launch Program”,
“program”: “/usr/local/bin/quasar”,
“args”: [“dev”]
},

I update as below for start debug of “quasar dev” for VS code , It works as I expected. In order debuging in VS code, have to launch “Debug Quasar” after start debug.

"configurations": [ { "type": "node", "request": "launch", "name": "Launch Program", "program": "/usr/local/bin/quasar", "args": ["dev"] },