/*
 * required polyfills
 */

/** IE9, IE10 and IE11 requires all of the following polyfills. **/
// import "core-js";
// import 'core-js/features/symbol'
// import 'core-js/features/object'
// import 'core-js/features/function'
// import 'core-js/features/parse-int'
// import 'core-js/features/parse-float'
// import 'core-js/features/number'
// import 'core-js/features/math'
// import 'core-js/features/string'
// import 'core-js/features/date'
// import 'core-js/features/array'
// import 'core-js/features/regexp'
// import 'core-js/features/map'
// import 'core-js/features/weak-map'
// import 'core-js/features/set'
// import 'core-js/features/set/map';

/** IE10 and IE11 requires the following for the Reflect API. */
// import 'core-js/features/reflect';

/** Evergreen browsers require these. **/
// Used for reflect-metadata in JIT. If you use AOT (and only Angular decorators), you can remove.
// import 'core-js/features/reflect'

// CustomEvent() constructor functionality in IE9, IE10, IE11
;(function () {
  if (typeof window.CustomEvent === 'function') return false

  function CustomEvent(event, params) {
    params = params || { bubbles: false, cancelable: false, detail: undefined }
    var evt = document.createEvent('CustomEvent')
    evt.initCustomEvent(event, params.bubbles, params.cancelable, params.detail)
    return evt
  }

  CustomEvent.prototype = window.Event.prototype

  window.CustomEvent = CustomEvent
})()

if (!Element.prototype.matches) {
  Element.prototype.matches =
    Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector
}

if (!Element.prototype.closest) {
  Element.prototype.closest = function (s) {
    var el = this

    do {
      if (Element.prototype.matches.call(el, s)) return el
      el = el.parentElement || el.parentNode
    } while (el !== null && el.nodeType === 1)
    return null
  }
}