How to debug nodejs applications?

debugging.md

Nodejs debugging:

node inspect app.js
type in console: c (continue to end), n (next expression), repl (go into repl mode and do modifications or log), list(10) to see 10 lines of code.
type debugger; inside code (similar to breakpoint)

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Nodejs debug with chrome-dev-tools:

nodemon inspect-brk app.js
go to chrome://inspect
click to open dedicated devtools for Nodejs
blue button is the same c.
use console as repl mode.

For pretty print using console.log you can use JSON.stringify(yourObject, undefined, 2).