How to debug a Node.js app that take input from the command line?

I am working on a node.js chat app that takes input from the stdin and sends output to stdout. Using it requires access to the console.

The problem is that launching the app in debug mode blocks the console. How can I debug (inspect objects when breakpoints are reached) while having access to stdin in the console?

Copyright Notice：Content Author:「znat」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/41471946/how-to-debug-a-node-js-app-that-take-input-from-the-command-line

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