Function removeDuplicates

sprint.js:335–355

(arr)

  }())

  var removeDuplicates = function(arr) {
    var clean = []
    var cleanLen = 0
    var arrLen = arr.length

    for (var i = 0; i < arrLen; i++) {
      var el = arr[i]
      var duplicate = false

      for (var j = 0; j < cleanLen; j++) {
        if (el !== clean[j]) continue
        duplicate = true
        break
      }

      if (duplicate) continue
      clean[cleanLen++] = el
    }

    return clean
  }

  var removeEvent = (function() {
    var isHandlerShared = function(el, event, registeredHandler) {