StackTrace with NodeJS

stackTrace.coffee

'use strict';

angular.module('vc.messages')
.factory "stackTrace", () ->
  stackTrace = require('stack-trace')

  getStack: (level) ->
    stack = stackTrace.get()
    for i in [0..level-1]
      stack.shift()
    stack.map (s, i) ->
      "at #{s.getFunctionName()} (#{s.getFileName()}:#{s.getLineNumber()})"

  getCaller: (level) ->
    stack = stackTrace.get()
    "at #{stack[level].getFunctionName()} (#{stack[level].getFileName()}:#{stack[level].getLineNumber()})"