Summary of Changes

• Added call stack grouping for Node internals, Express and Pug
• Added SVGs for same
• Added a note about optimization/cleanup

Test Plan

Baseline: basic express app:

npm install express-generator -g
express test-app   # create an application
cd test-app        
npm install

# replace jade with pug (new jade)
npm rm -S jade
npm i -S pug

A couple more Jade => pug changes:

1. replace app.set('view engine', 'jade'); with app.set('view engine', 'pug'); in app.js
2. move views/*.jade views/*.pug

Then

• load the app in debugger.html
• set breakpoint in node_modules/pug/lib/index.js line 211
• hit / (index) on the express server
• Observe that the call stack is collapsed & grouped by library

Screenshots

Add'l notes

• The express logo isn't great for a square
• This is primarily a proof-of-concept/demoware. There are lots and lots of popular node modules, this captures one of the most popular (express) and an associated library (pug). The purpose here is to demonstrate that this is possible & show the utility
• the Node internal bits are not "proof of concept", that bit is definitely useful/ready-to-ship.