add node modules to repo

app/node_modules/bootstrap/js/src/scrollspy.js

@@ -0,0 +1,329 @@
+import $ from 'jquery'
+import Util from './util'
+
+/**
+ * --------------------------------------------------------------------------
+ * Bootstrap (v4.1.1): scrollspy.js
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * --------------------------------------------------------------------------
+ */
+
+const ScrollSpy = (($) => {
+  /**
+   * ------------------------------------------------------------------------
+   * Constants
+   * ------------------------------------------------------------------------
+   */
+
+  const NAME               = 'scrollspy'
+  const VERSION            = '4.1.1'
+  const DATA_KEY           = 'bs.scrollspy'
+  const EVENT_KEY          = `.${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}${DATA_API_KEY}`
+  }
+
+  const ClassName = {
+    DROPDOWN_ITEM : 'dropdown-item',
+    DROPDOWN_MENU : 'dropdown-menu',
+    ACTIVE        : 'active'
+  }
+
+  const Selector = {
+    DATA_SPY        : '[data-spy="scroll"]',
+    ACTIVE          : '.active',
+    NAV_LIST_GROUP  : '.nav, .list-group',
+    NAV_LINKS       : '.nav-link',
+    NAV_ITEMS       : '.nav-item',
+    LIST_ITEMS      : '.list-group-item',
+    DROPDOWN        : '.dropdown',
+    DROPDOWN_ITEMS  : '.dropdown-item',
+    DROPDOWN_TOGGLE : '.dropdown-toggle'
+  }
+
+  const OffsetMethod = {
+    OFFSET   : 'offset',
+    POSITION : 'position'
+  }
+
+  /**
+   * ------------------------------------------------------------------------
+   * Class Definition
+   * ------------------------------------------------------------------------
+   */
+
+  class ScrollSpy {
+    constructor(element, config) {
+      this._element       = element
+      this._scrollElement = element.tagName === 'BODY' ? window : element
+      this._config        = this._getConfig(config)
+      this._selector      = `${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
+    }
+
+    // Public
+
+    refresh() {
+      const autoMethod = this._scrollElement === this._scrollElement.window
+        ? OffsetMethod.OFFSET : OffsetMethod.POSITION
+
+      const offsetMethod = this._config.method === 'auto'
+        ? autoMethod : this._config.method
+
+      const offsetBase = offsetMethod === OffsetMethod.POSITION
+        ? this._getScrollTop() : 0
+
+      this._offsets = []
+      this._targets = []
+
+      this._scrollHeight = this._getScrollHeight()
+
+      const targets = $.makeArray($(this._selector))
+
+      targets
+        .map((element) => {
+          let target
+          const targetSelector = Util.getSelectorFromElement(element)
+
+          if (targetSelector) {
+            target = $(targetSelector)[0]
+          }
+
+          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}`
+      }
+
+      Util.typeCheckConfig(NAME, config, DefaultType)
+
+      return config
+    }
+
+    _getScrollTop() {
+      return this._scrollElement === window
+        ? this._scrollElement.pageYOffset : this._scrollElement.scrollTop
+    }
+
+    _getScrollHeight() {
+      return this._scrollElement.scrollHeight || Math.max(
+        document.body.scrollHeight,
+        document.documentElement.scrollHeight
+      )
+    }
+
+    _getOffsetHeight() {
+      return this._scrollElement === window
+        ? window.innerHeight : this._scrollElement.getBoundingClientRect().height
+    }
+
+    _process() {
+      const scrollTop    = this._getScrollTop() + this._config.offset
+      const scrollHeight = this._getScrollHeight()
+      const maxScroll    = this._config.offset +
+        scrollHeight -
+        this._getOffsetHeight()
+
+      if (this._scrollHeight !== scrollHeight) {
+        this.refresh()
+      }
+
+      if (scrollTop >= maxScroll) {
+        const target = this._targets[this._targets.length - 1]
+
+        if (this._activeTarget !== target) {
+          this._activate(target)
+        }
+        return
+      }
+
+      if (this._activeTarget && scrollTop < this._offsets[0] && this._offsets[0] > 0) {
+        this._activeTarget = null
+        this._clear()
+        return
+      }
+
+      for (let i = this._offsets.length; i--;) {
+        const isActiveTarget = this._activeTarget !== this._targets[i] &&
+            scrollTop >= this._offsets[i] &&
+            (typeof this._offsets[i + 1] === 'undefined' ||
+                scrollTop < this._offsets[i + 1])
+
+        if (isActiveTarget) {
+          this._activate(this._targets[i])
+        }
+      }
+    }
+
+    _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 = $(queries.join(','))
+
+      if ($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)
+      }
+
+      $(this._scrollElement).trigger(Event.ACTIVATE, {
+        relatedTarget: target
+      })
+    }
+
+    _clear() {
+      $(this._selector).filter(Selector.ACTIVE).removeClass(ClassName.ACTIVE)
+    }
+
+    // Static
+
+    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
+   * ------------------------------------------------------------------------
+   */
+
+  $(window).on(Event.LOAD_DATA_API, () => {
+    const scrollSpys = $.makeArray($(Selector.DATA_SPY))
+
+    for (let i = scrollSpys.length; i--;) {
+      const $spy = $(scrollSpys[i])
+      ScrollSpy._jQueryInterface.call($spy, $spy.data())
+    }
+  })
+
+  /**
+   * ------------------------------------------------------------------------
+   * jQuery
+   * ------------------------------------------------------------------------
+   */
+
+  $.fn[NAME] = ScrollSpy._jQueryInterface
+  $.fn[NAME].Constructor = ScrollSpy
+  $.fn[NAME].noConflict = function () {
+    $.fn[NAME] = JQUERY_NO_CONFLICT
+    return ScrollSpy._jQueryInterface
+  }
+
+  return ScrollSpy
+})($)
+
+export default ScrollSpy