NodeJs commands and IQ

NodeJs commands

node -v
node -p 'process.versions.v8'
node --v8-options | grep "in progress"
node --v8-options | less
node --v8-options | grep gc

// Manually call GC : Handle with care as it will pause all executions so use it wisely.
node --expose-gc -e "gc()"

node
> v8
> v9.getHeapStatistics()


//To resolve SSL error while installing node or packages behind coporate proxy:
npm config set https-proxy `proxy-url`


even loop
call back
promises

authentication authorization
how to read large files
Diff types of streams 
single threaded
utilize all cores of cpu

exception handling
fork vs spawn


private variables in js
closures
mixins

design patterns

host node.js api in?
how to leverage multi core when it's single threaded

Unit testing
test runner? assertion lib? Mocha, chai, jasmine
vs Jest

Functional programming
Pure functions
inheritance vs Prototypal inheritance