1 files changed, 152 insertions, 0 deletions
diff --git a/vendor/twbs/bootstrap/js/src/util.js b/vendor/twbs/bootstrap/js/src/util.js
new file mode 100644
index 000000000..eb98d449c
--- /dev/null
+++ b/vendor/twbs/bootstrap/js/src/util.js
@@ -0,0 +1,152 @@
+import $ from 'jquery'
+
+/**
+ * --------------------------------------------------------------------------
+ * Bootstrap (v4.1.3): util.js
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * --------------------------------------------------------------------------
+ */
+
+const Util = (($) => {
+  /**
+   * ------------------------------------------------------------------------
+   * Private TransitionEnd Helpers
+   * ------------------------------------------------------------------------
+   */
+
+  const TRANSITION_END = 'transitionend'
+  const MAX_UID = 1000000
+  const MILLISECONDS_MULTIPLIER = 1000
+
+  // Shoutout AngusCroll (https://goo.gl/pxwQGp)
+  function toType(obj) {
+    return {}.toString.call(obj).match(/\s([a-z]+)/i)[1].toLowerCase()
+  }
+
+  function getSpecialTransitionEndEvent() {
+    return {
+      bindType: TRANSITION_END,
+      delegateType: TRANSITION_END,
+      handle(event) {
+        if ($(event.target).is(this)) {
+          return event.handleObj.handler.apply(this, arguments) // eslint-disable-line prefer-rest-params
+        }
+        return undefined // eslint-disable-line no-undefined
+      }
+    }
+  }
+
+  function transitionEndEmulator(duration) {
+    let called = false
+
+    $(this).one(Util.TRANSITION_END, () => {
+      called = true
+    })
+
+    setTimeout(() => {
+      if (!called) {
+        Util.triggerTransitionEnd(this)
+      }
+    }, duration)
+
+    return this
+  }
+
+  function setTransitionEndSupport() {
+    $.fn.emulateTransitionEnd = transitionEndEmulator
+    $.event.special[Util.TRANSITION_END] = getSpecialTransitionEndEvent()
+  }
+
+  /**
+   * --------------------------------------------------------------------------
+   * Public Util Api
+   * --------------------------------------------------------------------------
+   */
+
+  const Util = {
+
+    TRANSITION_END: 'bsTransitionEnd',
+
+    getUID(prefix) {
+      do {
+        // eslint-disable-next-line no-bitwise
+        prefix += ~~(Math.random() * MAX_UID) // "~~" acts like a faster Math.floor() here
+      } while (document.getElementById(prefix))
+      return prefix
+    },
+
+    getSelectorFromElement(element) {
+      let selector = element.getAttribute('data-target')
+      if (!selector || selector === '#') {
+        selector = element.getAttribute('href') || ''
+      }
+
+      try {
+        return document.querySelector(selector) ? selector : null
+      } catch (err) {
+        return null
+      }
+    },
+
+    getTransitionDurationFromElement(element) {
+      if (!element) {
+        return 0
+      }
+
+      // Get transition-duration of the element
+      let transitionDuration = $(element).css('transition-duration')
+      const floatTransitionDuration = parseFloat(transitionDuration)
+
+      // Return 0 if element or transition duration is not found
+      if (!floatTransitionDuration) {
+        return 0
+      }
+
+      // If multiple durations are defined, take the first
+      transitionDuration = transitionDuration.split(',')[0]
+
+      return parseFloat(transitionDuration) * MILLISECONDS_MULTIPLIER
+    },
+
+    reflow(element) {
+      return element.offsetHeight
+    },
+
+    triggerTransitionEnd(element) {
+      $(element).trigger(TRANSITION_END)
+    },
+
+    // TODO: Remove in v5
+    supportsTransitionEnd() {
+      return Boolean(TRANSITION_END)
+    },
+
+    isElement(obj) {
+      return (obj[0] || obj).nodeType
+    },
+
+    typeCheckConfig(componentName, config, configTypes) {
+      for (const property in configTypes) {
+        if (Object.prototype.hasOwnProperty.call(configTypes, property)) {
+          const expectedTypes = configTypes[property]
+          const value         = config[property]
+          const valueType     = value && Util.isElement(value)
+            ? 'element' : toType(value)
+
+          if (!new RegExp(expectedTypes).test(valueType)) {
+            throw new Error(
+              `${componentName.toUpperCase()}: ` +
+              `Option "${property}" provided type "${valueType}" ` +
+              `but expected type "${expectedTypes}".`)
+          }
+        }
+      }
+    }
+  }
+
+  setTransitionEndSupport()
+
+  return Util
+})($)
+
+export default Util