console-log-json

A universal JSON logger that plugs in to the existing `console.log` native function. console.log() anything and have the output be formatted to single line JSON, including stack traces, so that it can be easily parsed by tool such as LogDNA or other log

log-update

Log by overwriting the previous output in the terminal. Useful for rendering progress bars, animations, etc.

json-colorizer

A library to format JSON with colors for display in the console