I agree with @emilmoe . @iSamuelBarney You have no right to invite people to answer and then try to offend them. Even if you disagree with @emilmoe @smirnov and @Robert you should be gentle in your replies. Don't be rude as this is a friendly place for developers.

How do you go about implementing zero down time deployment in Node.js web apps? Is pm2 the only way? What do you recommend?

Cool. :)

What are your favourite CLI tools, if any? What does your typical day look like? Thank You.

Very informative.. Thank You!

What tools/process do you recommend for managing styles in React apps?

I recommend reading the answer by @jasonnutter . Also check out rest of the answers in that discussion .

May be the permission is not correct for the user? Can you try running as root i.e. sudo npm install ?