# Public: Measure how long a function takes to run.
#
# * description:
#   A String description that will be logged to the console.
# * fn:
#   A Function to measure the duration of.
#
# Returns the value returned by the given function.
window.measure = (description, fn) ->
  start = Date.now()
  value = fn()
  result = Date.now() - start
  console.log description, result
  value

# Public: Create a dev tools profile for a function.
#
# * description:
#   A String descrption that will be available in the Profiles tab of the dev
#   tools.
# * fn:
#   A Function to profile.
#
# Return the value returned by the given function.
window.profile = (description, fn) ->
  measure description, ->
    console.profile(description)
    value = fn()
    console.profileEnd(description)
    value