Inisital Asset Commit

assets/plugins/bs-stepper/js/polyfill.js

@@ -0,0 +1,74 @@
+let matches = window.Element.prototype.matches
+let closest = (element, selector) => element.closest(selector)
+let WinEvent = (inType, params) => new window.Event(inType, params)
+let createCustomEvent = (eventName, params) => {
+  const cEvent = new window.CustomEvent(eventName, params)
+
+  return cEvent
+}
+
+/* istanbul ignore next */
+function polyfill () {
+  if (!window.Element.prototype.matches) {
+    matches = window.Element.prototype.msMatchesSelector ||
+      window.Element.prototype.webkitMatchesSelector
+  }
+
+  if (!window.Element.prototype.closest) {
+    closest = (element, selector) => {
+      if (!document.documentElement.contains(element)) {
+        return null
+      }
+
+      do {
+        if (matches.call(element, selector)) {
+          return element
+        }
+
+        element = element.parentElement || element.parentNode
+      } while (element !== null && element.nodeType === 1)
+
+      return null
+    }
+  }
+
+  if (!window.Event || typeof window.Event !== 'function') {
+    WinEvent = (inType, params) => {
+      params = params || {}
+      const e = document.createEvent('Event')
+      e.initEvent(inType, Boolean(params.bubbles), Boolean(params.cancelable))
+      return e
+    }
+  }
+
+  if (typeof window.CustomEvent !== 'function') {
+    const originPreventDefault = window.Event.prototype.preventDefault
+
+    createCustomEvent = (eventName, params) => {
+      const evt = document.createEvent('CustomEvent')
+
+      params = params || { bubbles: false, cancelable: false, detail: null }
+      evt.initCustomEvent(eventName, params.bubbles, params.cancelable, params.detail)
+      evt.preventDefault = function () {
+        if (!this.cancelable) {
+          return
+        }
+
+        originPreventDefault.call(this)
+        Object.defineProperty(this, 'defaultPrevented', {
+          get: function () { return true }
+        })
+      }
+
+      return evt
+    }
+  }
+}
+
+polyfill()
+
+export {
+  closest,
+  WinEvent,
+  createCustomEvent
+}