If you are a Mac User, you probably find quicklook very useful. Quicklook is when you press spacebar on any file in finder, and it shows you a preview.
As a developer, I find quickview falling short though. A lot of files, that are text files, or I want to view them as text files, are not understood by quicklook.
Example – JSON, README, etc.
So, two utilities to make your life easier.
#1 – This http://www.sagtau.com/quicklookjson.html for JSON quicklook, I especially like this because the JSON is color coded, and collapso-expando.
#2 - QLStephen https://whomwah.github.io/qlstephen/
.. now if you want to quickly examine a package.json file, SPACEBAR and bingo!