remove useless iife

1 files changed, 261 insertions, 265 deletions

diff --git a/js/src/scrollspy.js b/js/src/scrollspy.js
index c779c51dd..bd7721673 100644
--- a/js/src/scrollspy.js
+++ b/js/src/scrollspy.js
@@ -8,325 +8,321 @@ import Util from './util'
  * --------------------------------------------------------------------------
  */
 
-const ScrollSpy = (($) => {
-  /**
-   * ------------------------------------------------------------------------
-   * Constants
-   * ------------------------------------------------------------------------
-   */
-
-  const NAME               = 'scrollspy'
-  const VERSION            = '4.1.3'
-  const DATA_KEY           = 'bs.scrollspy'
-  const EVENT_KEY          = `.${DATA_KEY}`
-  const DATA_API_KEY       = '.data-api'
-  const JQUERY_NO_CONFLICT = $.fn[NAME]
-
-  const Default = {
-    offset : 10,
-    method : 'auto',
-    target : ''
-  }
+/**
+ * ------------------------------------------------------------------------
+ * Constants
+ * ------------------------------------------------------------------------
+ */
 
-  const DefaultType = {
-    offset : 'number',
-    method : 'string',
-    target : '(string|element)'
-  }
+const NAME               = 'scrollspy'
+const VERSION            = '4.1.3'
+const DATA_KEY           = 'bs.scrollspy'
+const EVENT_KEY          = `.${DATA_KEY}`
+const DATA_API_KEY       = '.data-api'
+const JQUERY_NO_CONFLICT = $.fn[NAME]
+
+const Default = {
+  offset : 10,
+  method : 'auto',
+  target : ''
+}
+
+const DefaultType = {
+  offset : 'number',
+  method : 'string',
+  target : '(string|element)'
+}
+
+const Event = {
+  ACTIVATE      : `activate${EVENT_KEY}`,
+  SCROLL        : `scroll${EVENT_KEY}`,
+  LOAD_DATA_API : `load${EVENT_KEY}${DATA_API_KEY}`
+}
+
+const ClassName = {
+  DROPDOWN_ITEM : 'dropdown-item',
+  DROPDOWN_MENU : 'dropdown-menu',
+  ACTIVE        : 'active'
+}
+
+const Selector = {
+  DATA_SPY        : '[data-spy="scroll"]',
+  ACTIVE          : '.active',
+  NAV_LIST_GROUP  : '.nav, .list-group',
+  NAV_LINKS       : '.nav-link',
+  NAV_ITEMS       : '.nav-item',
+  LIST_ITEMS      : '.list-group-item',
+  DROPDOWN        : '.dropdown',
+  DROPDOWN_ITEMS  : '.dropdown-item',
+  DROPDOWN_TOGGLE : '.dropdown-toggle'
+}
+
+const OffsetMethod = {
+  OFFSET   : 'offset',
+  POSITION : 'position'
+}
 
-  const Event = {
-    ACTIVATE      : `activate${EVENT_KEY}`,
-    SCROLL        : `scroll${EVENT_KEY}`,
-    LOAD_DATA_API : `load${EVENT_KEY}${DATA_API_KEY}`
-  }
+/**
+ * ------------------------------------------------------------------------
+ * Class Definition
+ * ------------------------------------------------------------------------
+ */
 
-  const ClassName = {
-    DROPDOWN_ITEM : 'dropdown-item',
-    DROPDOWN_MENU : 'dropdown-menu',
-    ACTIVE        : 'active'
+class ScrollSpy {
+  constructor(element, config) {
+    this._element       = element
+    this._scrollElement = element.tagName === 'BODY' ? window : element
+    this._config        = this._getConfig(config)
+    this._selector      = `${this._config.target} ${Selector.NAV_LINKS},` +
+                          `${this._config.target} ${Selector.LIST_ITEMS},` +
+                          `${this._config.target} ${Selector.DROPDOWN_ITEMS}`
+    this._offsets       = []
+    this._targets       = []
+    this._activeTarget  = null
+    this._scrollHeight  = 0
+
+    $(this._scrollElement).on(Event.SCROLL, (event) => this._process(event))
+
+    this.refresh()
+    this._process()
   }
 
-  const Selector = {
-    DATA_SPY        : '[data-spy="scroll"]',
-    ACTIVE          : '.active',
-    NAV_LIST_GROUP  : '.nav, .list-group',
-    NAV_LINKS       : '.nav-link',
-    NAV_ITEMS       : '.nav-item',
-    LIST_ITEMS      : '.list-group-item',
-    DROPDOWN        : '.dropdown',
-    DROPDOWN_ITEMS  : '.dropdown-item',
-    DROPDOWN_TOGGLE : '.dropdown-toggle'
-  }
+  // Getters
 
-  const OffsetMethod = {
-    OFFSET   : 'offset',
-    POSITION : 'position'
+  static get VERSION() {
+    return VERSION
   }
 
-  /**
-   * ------------------------------------------------------------------------
-   * Class Definition
-   * ------------------------------------------------------------------------
-   */
-
-  class ScrollSpy {
-    constructor(element, config) {
-      this._element       = element
-      this._scrollElement = element.tagName === 'BODY' ? window : element
-      this._config        = this._getConfig(config)
-      this._selector      = `${this._config.target} ${Selector.NAV_LINKS},` +
-                            `${this._config.target} ${Selector.LIST_ITEMS},` +
-                            `${this._config.target} ${Selector.DROPDOWN_ITEMS}`
-      this._offsets       = []
-      this._targets       = []
-      this._activeTarget  = null
-      this._scrollHeight  = 0
-
-      $(this._scrollElement).on(Event.SCROLL, (event) => this._process(event))
-
-      this.refresh()
-      this._process()
-    }
-
-    // Getters
-
-    static get VERSION() {
-      return VERSION
-    }
-
-    static get Default() {
-      return Default
-    }
+  static get Default() {
+    return Default
+  }
 
-    // Public
+  // Public
 
-    refresh() {
-      const autoMethod = this._scrollElement === this._scrollElement.window
-        ? OffsetMethod.OFFSET : OffsetMethod.POSITION
+  refresh() {
+    const autoMethod = this._scrollElement === this._scrollElement.window
+      ? OffsetMethod.OFFSET : OffsetMethod.POSITION
 
-      const offsetMethod = this._config.method === 'auto'
-        ? autoMethod : this._config.method
+    const offsetMethod = this._config.method === 'auto'
+      ? autoMethod : this._config.method
 
-      const offsetBase = offsetMethod === OffsetMethod.POSITION
-        ? this._getScrollTop() : 0
+    const offsetBase = offsetMethod === OffsetMethod.POSITION
+      ? this._getScrollTop() : 0
 
-      this._offsets = []
-      this._targets = []
+    this._offsets = []
+    this._targets = []
 
-      this._scrollHeight = this._getScrollHeight()
+    this._scrollHeight = this._getScrollHeight()
 
-      const targets = [].slice.call(document.querySelectorAll(this._selector))
+    const targets = [].slice.call(document.querySelectorAll(this._selector))
 
-      targets
-        .map((element) => {
-          let target
-          const targetSelector = Util.getSelectorFromElement(element)
+    targets
+      .map((element) => {
+        let target
+        const targetSelector = Util.getSelectorFromElement(element)
 
-          if (targetSelector) {
-            target = document.querySelector(targetSelector)
-          }
+        if (targetSelector) {
+          target = document.querySelector(targetSelector)
+        }
 
-          if (target) {
-            const targetBCR = target.getBoundingClientRect()
-            if (targetBCR.width || targetBCR.height) {
-              // TODO (fat): remove sketch reliance on jQuery position/offset
-              return [
-                $(target)[offsetMethod]().top + offsetBase,
-                targetSelector
-              ]
-            }
+        if (target) {
+          const targetBCR = target.getBoundingClientRect()
+          if (targetBCR.width || targetBCR.height) {
+            // TODO (fat): remove sketch reliance on jQuery position/offset
+            return [
+              $(target)[offsetMethod]().top + offsetBase,
+              targetSelector
+            ]
           }
-          return null
-        })
-        .filter((item) => item)
-        .sort((a, b) => a[0] - b[0])
-        .forEach((item) => {
-          this._offsets.push(item[0])
-          this._targets.push(item[1])
-        })
-    }
-
-    dispose() {
-      $.removeData(this._element, DATA_KEY)
-      $(this._scrollElement).off(EVENT_KEY)
-
-      this._element       = null
-      this._scrollElement = null
-      this._config        = null
-      this._selector      = null
-      this._offsets       = null
-      this._targets       = null
-      this._activeTarget  = null
-      this._scrollHeight  = null
-    }
-
-    // Private
-
-    _getConfig(config) {
-      config = {
-        ...Default,
-        ...typeof config === 'object' && config ? config : {}
-      }
-
-      if (typeof config.target !== 'string') {
-        let id = $(config.target).attr('id')
-        if (!id) {
-          id = Util.getUID(NAME)
-          $(config.target).attr('id', id)
         }
-        config.target = `#${id}`
-      }
+        return null
+      })
+      .filter((item) => item)
+      .sort((a, b) => a[0] - b[0])
+      .forEach((item) => {
+        this._offsets.push(item[0])
+        this._targets.push(item[1])
+      })
+  }
 
-      Util.typeCheckConfig(NAME, config, DefaultType)
+  dispose() {
+    $.removeData(this._element, DATA_KEY)
+    $(this._scrollElement).off(EVENT_KEY)
+
+    this._element       = null
+    this._scrollElement = null
+    this._config        = null
+    this._selector      = null
+    this._offsets       = null
+    this._targets       = null
+    this._activeTarget  = null
+    this._scrollHeight  = null
+  }
 
-      return config
-    }
+  // Private
 
-    _getScrollTop() {
-      return this._scrollElement === window
-        ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop
+  _getConfig(config) {
+    config = {
+      ...Default,
+      ...typeof config === 'object' && config ? config : {}
     }
 
-    _getScrollHeight() {
-      return this._scrollElement.scrollHeight || Math.max(
-        document.body.scrollHeight,
-        document.documentElement.scrollHeight
-      )
+    if (typeof config.target !== 'string') {
+      let id = $(config.target).attr('id')
+      if (!id) {
+        id = Util.getUID(NAME)
+        $(config.target).attr('id', id)
+      }
+      config.target = `#${id}`
     }
 
-    _getOffsetHeight() {
-      return this._scrollElement === window
-        ? window.innerHeight : this._scrollElement.getBoundingClientRect().height
-    }
+    Util.typeCheckConfig(NAME, config, DefaultType)
 
-    _process() {
-      const scrollTop    = this._getScrollTop() + this._config.offset
-      const scrollHeight = this._getScrollHeight()
-      const maxScroll    = this._config.offset +
-        scrollHeight -
-        this._getOffsetHeight()
+    return config
+  }
 
-      if (this._scrollHeight !== scrollHeight) {
-        this.refresh()
-      }
+  _getScrollTop() {
+    return this._scrollElement === window
+      ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop
+  }
 
-      if (scrollTop >= maxScroll) {
-        const target = this._targets[this._targets.length - 1]
+  _getScrollHeight() {
+    return this._scrollElement.scrollHeight || Math.max(
+      document.body.scrollHeight,
+      document.documentElement.scrollHeight
+    )
+  }
 
-        if (this._activeTarget !== target) {
-          this._activate(target)
-        }
-        return
-      }
+  _getOffsetHeight() {
+    return this._scrollElement === window
+      ? window.innerHeight : this._scrollElement.getBoundingClientRect().height
+  }
 
-      if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
-        this._activeTarget = null
-        this._clear()
-        return
-      }
+  _process() {
+    const scrollTop    = this._getScrollTop() + this._config.offset
+    const scrollHeight = this._getScrollHeight()
+    const maxScroll    = this._config.offset +
+      scrollHeight -
+      this._getOffsetHeight()
 
-      const offsetLength = this._offsets.length
-      for (let i = offsetLength; i--;) {
-        const isActiveTarget = this._activeTarget !== this._targets[i] &&
-            scrollTop >= this._offsets[i] &&
-            (typeof this._offsets[i + 1] === 'undefined' ||
-                scrollTop < this._offsets[i + 1])
+    if (this._scrollHeight !== scrollHeight) {
+      this.refresh()
+    }
 
-        if (isActiveTarget) {
-          this._activate(this._targets[i])
-        }
+    if (scrollTop >= maxScroll) {
+      const target = this._targets[this._targets.length - 1]
+
+      if (this._activeTarget !== target) {
+        this._activate(target)
       }
+      return
     }
 
-    _activate(target) {
-      this._activeTarget = target
-
+    if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
+      this._activeTarget = null
       this._clear()
+      return
+    }
 
-      let queries = this._selector.split(',')
-      // eslint-disable-next-line arrow-body-style
-      queries = queries.map((selector) => {
-        return `${selector}[data-target="${target}"],` +
-               `${selector}[href="${target}"]`
-      })
+    const offsetLength = this._offsets.length
+    for (let i = offsetLength; i--;) {
+      const isActiveTarget = this._activeTarget !== this._targets[i] &&
+          scrollTop >= this._offsets[i] &&
+          (typeof this._offsets[i + 1] === 'undefined' ||
+              scrollTop < this._offsets[i + 1])
 
-      const $link = $([].slice.call(document.querySelectorAll(queries.join(','))))
-
-      if ($link.hasClass(ClassName.DROPDOWN_ITEM)) {
-        $link.closest(Selector.DROPDOWN).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE)
-        $link.addClass(ClassName.ACTIVE)
-      } else {
-        // Set triggered link as active
-        $link.addClass(ClassName.ACTIVE)
-        // Set triggered links parents as active
-        // With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
-        $link.parents(Selector.NAV_LIST_GROUP).prev(`${Selector.NAV_LINKS}, ${Selector.LIST_ITEMS}`).addClass(ClassName.ACTIVE)
-        // Handle special case when .nav-link is inside .nav-item
-        $link.parents(Selector.NAV_LIST_GROUP).prev(Selector.NAV_ITEMS).children(Selector.NAV_LINKS).addClass(ClassName.ACTIVE)
+      if (isActiveTarget) {
+        this._activate(this._targets[i])
       }
-
-      $(this._scrollElement).trigger(Event.ACTIVATE, {
-        relatedTarget: target
-      })
     }
+  }
 
-    _clear() {
-      const nodes = [].slice.call(document.querySelectorAll(this._selector))
-      $(nodes).filter(Selector.ACTIVE).removeClass(ClassName.ACTIVE)
+  _activate(target) {
+    this._activeTarget = target
+
+    this._clear()
+
+    let queries = this._selector.split(',')
+    // eslint-disable-next-line arrow-body-style
+    queries = queries.map((selector) => {
+      return `${selector}[data-target="${target}"],` +
+              `${selector}[href="${target}"]`
+    })
+
+    const $link = $([].slice.call(document.querySelectorAll(queries.join(','))))
+
+    if ($link.hasClass(ClassName.DROPDOWN_ITEM)) {
+      $link.closest(Selector.DROPDOWN).find(Selector.DROPDOWN_TOGGLE).addClass(ClassName.ACTIVE)
+      $link.addClass(ClassName.ACTIVE)
+    } else {
+      // Set triggered link as active
+      $link.addClass(ClassName.ACTIVE)
+      // Set triggered links parents as active
+      // With both <ul> and <nav> markup a parent is the previous sibling of any nav ancestor
+      $link.parents(Selector.NAV_LIST_GROUP).prev(`${Selector.NAV_LINKS}, ${Selector.LIST_ITEMS}`).addClass(ClassName.ACTIVE)
+      // Handle special case when .nav-link is inside .nav-item
+      $link.parents(Selector.NAV_LIST_GROUP).prev(Selector.NAV_ITEMS).children(Selector.NAV_LINKS).addClass(ClassName.ACTIVE)
     }
 
-    // Static
+    $(this._scrollElement).trigger(Event.ACTIVATE, {
+      relatedTarget: target
+    })
+  }
 
-    static _jQueryInterface(config) {
-      return this.each(function () {
-        let data = $(this).data(DATA_KEY)
-        const _config = typeof config === 'object' && config
+  _clear() {
+    const nodes = [].slice.call(document.querySelectorAll(this._selector))
+    $(nodes).filter(Selector.ACTIVE).removeClass(ClassName.ACTIVE)
+  }
 
-        if (!data) {
-          data = new ScrollSpy(this, _config)
-          $(this).data(DATA_KEY, data)
-        }
+  // Static
 
-        if (typeof config === 'string') {
-          if (typeof data[config] === 'undefined') {
-            throw new TypeError(`No method named "${config}"`)
-          }
-          data[config]()
+  static _jQueryInterface(config) {
+    return this.each(function () {
+      let data = $(this).data(DATA_KEY)
+      const _config = typeof config === 'object' && config
+
+      if (!data) {
+        data = new ScrollSpy(this, _config)
+        $(this).data(DATA_KEY, data)
+      }
+
+      if (typeof config === 'string') {
+        if (typeof data[config] === 'undefined') {
+          throw new TypeError(`No method named "${config}"`)
         }
-      })
-    }
+        data[config]()
+      }
+    })
   }
+}
 
-  /**
-   * ------------------------------------------------------------------------
-   * Data Api implementation
-   * ------------------------------------------------------------------------
-   */
+/**
+ * ------------------------------------------------------------------------
+ * Data Api implementation
+ * ------------------------------------------------------------------------
+ */
 
-  $(window).on(Event.LOAD_DATA_API, () => {
-    const scrollSpys = [].slice.call(document.querySelectorAll(Selector.DATA_SPY))
+$(window).on(Event.LOAD_DATA_API, () => {
+  const scrollSpys = [].slice.call(document.querySelectorAll(Selector.DATA_SPY))
 
-    const scrollSpysLength = scrollSpys.length
-    for (let i = scrollSpysLength; i--;) {
-      const $spy = $(scrollSpys[i])
-      ScrollSpy._jQueryInterface.call($spy, $spy.data())
-    }
-  })
-
-  /**
-   * ------------------------------------------------------------------------
-   * jQuery
-   * ------------------------------------------------------------------------
-   */
-
-  $.fn[NAME] = ScrollSpy._jQueryInterface
-  $.fn[NAME].Constructor = ScrollSpy
-  $.fn[NAME].noConflict = () => {
-    $.fn[NAME] = JQUERY_NO_CONFLICT
-    return ScrollSpy._jQueryInterface
+  const scrollSpysLength = scrollSpys.length
+  for (let i = scrollSpysLength; i--;) {
+    const $spy = $(scrollSpys[i])
+    ScrollSpy._jQueryInterface.call($spy, $spy.data())
   }
+})
+
+/**
+ * ------------------------------------------------------------------------
+ * jQuery
+ * ------------------------------------------------------------------------
+ */
 
-  return ScrollSpy
-})($)
+$.fn[NAME] = ScrollSpy._jQueryInterface
+$.fn[NAME].Constructor = ScrollSpy
+$.fn[NAME].noConflict = () => {
+  $.fn[NAME] = JQUERY_NO_CONFLICT
+  return ScrollSpy._jQueryInterface
+}
 
 export default ScrollSpy