react-lite-misc/src/util/debounce.coffee

Misc Components of jianliao.com

# https://coffeescript-cookbook.github.io/chapters/functions/debounce

module.exports = (func, threshold, execAsap) ->
  timeout = null
  (args...) ->
    obj = this
    delayed = ->
      func.apply(obj, args) unless execAsap
      timeout = null
    if timeout
      clearTimeout(timeout)
    else if (execAsap)
      func.apply(obj, args)
    timeout = setTimeout delayed, threshold || 100