Treelog prints out your logs along with the functions they were called from, and arranges them in a tree based on a stacktrace:

var log = require("treelog")

function makeBreakfast() {
  log("so hungry")
  toast()
}

function toast() {
  log("bread is soft")
  stove.on()
  log("so toasty!")
}

var stove = {
  on: function() {
    log("ignition!")
  }
}

makeBreakfast()

will log out:

 makeBreakfast → - - - - - - - - - - - - -   so hungry
 - toast → - - - - - - - - - - - - - - - -   bread is soft
 - - Object.stove.on → - - - - - - - - - -   ignition!
 - toast → - - - - - - - - - - - - - - - -   so toasty!