Pry.js is a Node debugger and REPL that allows you to stop in your code like the Pry debugger for Ruby. It can be installed via NPM and provides commands like help, whereami, and play to debug and interact with a Node application. Pry.js allows for live coding by stopping execution in the code.

1. Pry.js
Node REPL / Debugger

2. What is a REPL
● Read - Eval - Print - Loop
● Node / Coffee have them built in
○ They don’t stop in your code
● Pry (ruby) and Debugger (js)

3. Installing
Easy, via NPM.
npm install --save-dev pryjs

4. Commands
● help
● whereami
● play
● wtf

5. Live Coding

6. Thank you!
@blainesch