From f343cfd92e3dc9a8ae398e3834c9bdcf95d51a9f Mon Sep 17 00:00:00 2001 From: Penar Musaraj Date: Tue, 22 Jun 2021 09:30:44 -0400 Subject: [PATCH] DEV: Remove IntersectionObserver polyfill (#13445) --- .../discourse/app/components/emoji-picker.js | 25 +- app/assets/javascripts/vendor.js | 1 - app/assets/stylesheets/common/base/emoji.scss | 16 + lib/tasks/javascript.rake | 3 - package.json | 1 - .../javascripts/intersection-observer.js | 726 ------------------ yarn.lock | 5 - 7 files changed, 30 insertions(+), 747 deletions(-) delete mode 100644 vendor/assets/javascripts/intersection-observer.js diff --git a/app/assets/javascripts/discourse/app/components/emoji-picker.js b/app/assets/javascripts/discourse/app/components/emoji-picker.js index 79893844465..20189196442 100644 --- a/app/assets/javascripts/discourse/app/components/emoji-picker.js +++ b/app/assets/javascripts/discourse/app/components/emoji-picker.js @@ -45,7 +45,9 @@ export default Component.extend({ this.set("recentEmojis", this.emojiStore.favorites); this.set("selectedDiversity", this.emojiStore.diversity); - this._sectionObserver = this._setupSectionObserver(); + if ("IntersectionObserver" in window) { + this._sectionObserver = this._setupSectionObserver(); + } }, didInsertElement() { @@ -107,10 +109,6 @@ export default Component.extend({ ); } - emojiPicker - .querySelectorAll(".emojis-container .section .section-header") - .forEach((p) => this._sectionObserver.observe(p)); - // this is a low-tech trick to prevent appending hundreds of emojis // of blocking the rendering of the picker later(() => { @@ -123,6 +121,12 @@ export default Component.extend({ ) { const filter = emojiPicker.querySelector("input.filter"); filter && filter.focus(); + + if (this._sectionObserver) { + emojiPicker + .querySelectorAll(".emojis-container .section .section-header") + .forEach((p) => this._sectionObserver.observe(p)); + } } if (this.selectedDiversity !== 0) { @@ -216,23 +220,22 @@ export default Component.extend({ @action onFilter(event) { - const emojiPickerArea = document.querySelector(".emoji-picker-emoji-area"); - const emojisContainer = emojiPickerArea.querySelector(".emojis-container"); - const results = emojiPickerArea.querySelector(".results"); + const emojiPicker = document.querySelector(".emoji-picker"); + const results = document.querySelector(".emoji-picker-emoji-area .results"); results.innerHTML = ""; if (event.target.value) { results.innerHTML = emojiSearch(event.target.value.toLowerCase(), { - maxResults: 10, + maxResults: 20, diversity: this.emojiStore.diversity, }) .map(this._replaceEmoji) .join(""); - emojisContainer.style.visibility = "hidden"; + emojiPicker.classList.add("has-filter"); results.scrollIntoView(); } else { - emojisContainer.style.visibility = "visible"; + emojiPicker.classList.remove("has-filter"); } }, diff --git a/app/assets/javascripts/vendor.js b/app/assets/javascripts/vendor.js index fbeadfd893c..2f2fe583908 100644 --- a/app/assets/javascripts/vendor.js +++ b/app/assets/javascripts/vendor.js @@ -25,6 +25,5 @@ //= require jquery.autoellipsis-1.0.10 //= require virtual-dom //= require virtual-dom-amd -//= require intersection-observer //= require discourse-shims //= require pretty-text-bundle diff --git a/app/assets/stylesheets/common/base/emoji.scss b/app/assets/stylesheets/common/base/emoji.scss index a617982c929..8d37308b16f 100644 --- a/app/assets/stylesheets/common/base/emoji.scss +++ b/app/assets/stylesheets/common/base/emoji.scss @@ -126,6 +126,22 @@ sup img.emoji { } } } + + &.has-filter { + .emojis-container { + visibility: hidden; + height: 0px; + overflow: hidden; + } + + .emoji-picker-category-buttons { + pointer-events: none; + opacity: 0.5; + .category-button.current .emoji { + filter: grayscale(100%); + } + } + } } .emoji-picker-search-container { diff --git a/lib/tasks/javascript.rake b/lib/tasks/javascript.rake index 2ab50b57f38..a40bd98cff4 100644 --- a/lib/tasks/javascript.rake +++ b/lib/tasks/javascript.rake @@ -140,9 +140,6 @@ def dependencies source: 'mousetrap/plugins/global-bind/mousetrap-global-bind.js' }, { source: 'resumablejs/resumable.js' - }, { - # TODO: drop when we eventually drop IE11, this will land in iOS in version 13 - source: 'intersection-observer/intersection-observer.js' }, { source: 'workbox-sw/build/.', destination: 'workbox', diff --git a/package.json b/package.json index 6dbc0f7f929..9d013590a10 100644 --- a/package.json +++ b/package.json @@ -19,7 +19,6 @@ "diffhtml": "^1.0.0-beta.18", "eslint-config-discourse": "^1.1.8", "handlebars": "^4.7.7", - "intersection-observer": "^0.5.1", "jquery": "3.5.1", "jquery-color": "3.0.0-alpha.1", "jquery-tags-input": "1.3.5", diff --git a/vendor/assets/javascripts/intersection-observer.js b/vendor/assets/javascripts/intersection-observer.js deleted file mode 100644 index 7a079659b7e..00000000000 --- a/vendor/assets/javascripts/intersection-observer.js +++ /dev/null @@ -1,726 +0,0 @@ -/** - * Copyright 2016 Google Inc. All Rights Reserved. - * - * Licensed under the W3C SOFTWARE AND DOCUMENT NOTICE AND LICENSE. - * - * https://www.w3.org/Consortium/Legal/2015/copyright-software-and-document - * - */ - -(function(window, document) { -'use strict'; - - -// Exits early if all IntersectionObserver and IntersectionObserverEntry -// features are natively supported. -if ('IntersectionObserver' in window && - 'IntersectionObserverEntry' in window && - 'intersectionRatio' in window.IntersectionObserverEntry.prototype) { - - // Minimal polyfill for Edge 15's lack of `isIntersecting` - // See: https://github.com/w3c/IntersectionObserver/issues/211 - if (!('isIntersecting' in window.IntersectionObserverEntry.prototype)) { - Object.defineProperty(window.IntersectionObserverEntry.prototype, - 'isIntersecting', { - get: function () { - return this.intersectionRatio > 0; - } - }); - } - return; -} - - -/** - * An IntersectionObserver registry. This registry exists to hold a strong - * reference to IntersectionObserver instances currently observing a target - * element. Without this registry, instances without another reference may be - * garbage collected. - */ -var registry = []; - - -/** - * Creates the global IntersectionObserverEntry constructor. - * https://w3c.github.io/IntersectionObserver/#intersection-observer-entry - * @param {Object} entry A dictionary of instance properties. - * @constructor - */ -function IntersectionObserverEntry(entry) { - this.time = entry.time; - this.target = entry.target; - this.rootBounds = entry.rootBounds; - this.boundingClientRect = entry.boundingClientRect; - this.intersectionRect = entry.intersectionRect || getEmptyRect(); - this.isIntersecting = !!entry.intersectionRect; - - // Calculates the intersection ratio. - var targetRect = this.boundingClientRect; - var targetArea = targetRect.width * targetRect.height; - var intersectionRect = this.intersectionRect; - var intersectionArea = intersectionRect.width * intersectionRect.height; - - // Sets intersection ratio. - if (targetArea) { - // Round the intersection ratio to avoid floating point math issues: - // https://github.com/w3c/IntersectionObserver/issues/324 - this.intersectionRatio = Number((intersectionArea / targetArea).toFixed(4)); - } else { - // If area is zero and is intersecting, sets to 1, otherwise to 0 - this.intersectionRatio = this.isIntersecting ? 1 : 0; - } -} - - -/** - * Creates the global IntersectionObserver constructor. - * https://w3c.github.io/IntersectionObserver/#intersection-observer-interface - * @param {Function} callback The function to be invoked after intersection - * changes have queued. The function is not invoked if the queue has - * been emptied by calling the `takeRecords` method. - * @param {Object=} opt_options Optional configuration options. - * @constructor - */ -function IntersectionObserver(callback, opt_options) { - - var options = opt_options || {}; - - if (typeof callback != 'function') { - throw new Error('callback must be a function'); - } - - if (options.root && options.root.nodeType != 1) { - throw new Error('root must be an Element'); - } - - // Binds and throttles `this._checkForIntersections`. - this._checkForIntersections = throttle( - this._checkForIntersections.bind(this), this.THROTTLE_TIMEOUT); - - // Private properties. - this._callback = callback; - this._observationTargets = []; - this._queuedEntries = []; - this._rootMarginValues = this._parseRootMargin(options.rootMargin); - - // Public properties. - this.thresholds = this._initThresholds(options.threshold); - this.root = options.root || null; - this.rootMargin = this._rootMarginValues.map(function(margin) { - return margin.value + margin.unit; - }).join(' '); -} - - -/** - * The minimum interval within which the document will be checked for - * intersection changes. - */ -IntersectionObserver.prototype.THROTTLE_TIMEOUT = 100; - - -/** - * The frequency in which the polyfill polls for intersection changes. - * this can be updated on a per instance basis and must be set prior to - * calling `observe` on the first target. - */ -IntersectionObserver.prototype.POLL_INTERVAL = null; - -/** - * Use a mutation observer on the root element - * to detect intersection changes. - */ -IntersectionObserver.prototype.USE_MUTATION_OBSERVER = true; - - -/** - * Starts observing a target element for intersection changes based on - * the thresholds values. - * @param {Element} target The DOM element to observe. - */ -IntersectionObserver.prototype.observe = function(target) { - var isTargetAlreadyObserved = this._observationTargets.some(function(item) { - return item.element == target; - }); - - if (isTargetAlreadyObserved) { - return; - } - - if (!(target && target.nodeType == 1)) { - throw new Error('target must be an Element'); - } - - this._registerInstance(); - this._observationTargets.push({element: target, entry: null}); - this._monitorIntersections(); - this._checkForIntersections(); -}; - - -/** - * Stops observing a target element for intersection changes. - * @param {Element} target The DOM element to observe. - */ -IntersectionObserver.prototype.unobserve = function(target) { - this._observationTargets = - this._observationTargets.filter(function(item) { - - return item.element != target; - }); - if (!this._observationTargets.length) { - this._unmonitorIntersections(); - this._unregisterInstance(); - } -}; - - -/** - * Stops observing all target elements for intersection changes. - */ -IntersectionObserver.prototype.disconnect = function() { - this._observationTargets = []; - this._unmonitorIntersections(); - this._unregisterInstance(); -}; - - -/** - * Returns any queue entries that have not yet been reported to the - * callback and clears the queue. This can be used in conjunction with the - * callback to obtain the absolute most up-to-date intersection information. - * @return {Array} The currently queued entries. - */ -IntersectionObserver.prototype.takeRecords = function() { - var records = this._queuedEntries.slice(); - this._queuedEntries = []; - return records; -}; - - -/** - * Accepts the threshold value from the user configuration object and - * returns a sorted array of unique threshold values. If a value is not - * between 0 and 1 and error is thrown. - * @private - * @param {Array|number=} opt_threshold An optional threshold value or - * a list of threshold values, defaulting to [0]. - * @return {Array} A sorted list of unique and valid threshold values. - */ -IntersectionObserver.prototype._initThresholds = function(opt_threshold) { - var threshold = opt_threshold || [0]; - if (!Array.isArray(threshold)) threshold = [threshold]; - - return threshold.sort().filter(function(t, i, a) { - if (typeof t != 'number' || isNaN(t) || t < 0 || t > 1) { - throw new Error('threshold must be a number between 0 and 1 inclusively'); - } - return t !== a[i - 1]; - }); -}; - - -/** - * Accepts the rootMargin value from the user configuration object - * and returns an array of the four margin values as an object containing - * the value and unit properties. If any of the values are not properly - * formatted or use a unit other than px or %, and error is thrown. - * @private - * @param {string=} opt_rootMargin An optional rootMargin value, - * defaulting to '0px'. - * @return {Array} An array of margin objects with the keys - * value and unit. - */ -IntersectionObserver.prototype._parseRootMargin = function(opt_rootMargin) { - var marginString = opt_rootMargin || '0px'; - var margins = marginString.split(/\s+/).map(function(margin) { - var parts = /^(-?\d*\.?\d+)(px|%)$/.exec(margin); - if (!parts) { - throw new Error('rootMargin must be specified in pixels or percent'); - } - return {value: parseFloat(parts[1]), unit: parts[2]}; - }); - - // Handles shorthand. - margins[1] = margins[1] || margins[0]; - margins[2] = margins[2] || margins[0]; - margins[3] = margins[3] || margins[1]; - - return margins; -}; - - -/** - * Starts polling for intersection changes if the polling is not already - * happening, and if the page's visibility state is visible. - * @private - */ -IntersectionObserver.prototype._monitorIntersections = function() { - if (!this._monitoringIntersections) { - this._monitoringIntersections = true; - - // If a poll interval is set, use polling instead of listening to - // resize and scroll events or DOM mutations. - if (this.POLL_INTERVAL) { - this._monitoringInterval = setInterval( - this._checkForIntersections, this.POLL_INTERVAL); - } - else { - addEvent(window, 'resize', this._checkForIntersections, true); - addEvent(document, 'scroll', this._checkForIntersections, true); - - if (this.USE_MUTATION_OBSERVER && 'MutationObserver' in window) { - this._domObserver = new MutationObserver(this._checkForIntersections); - this._domObserver.observe(document, { - attributes: true, - childList: true, - characterData: true, - subtree: true - }); - } - } - } -}; - - -/** - * Stops polling for intersection changes. - * @private - */ -IntersectionObserver.prototype._unmonitorIntersections = function() { - if (this._monitoringIntersections) { - this._monitoringIntersections = false; - - clearInterval(this._monitoringInterval); - this._monitoringInterval = null; - - removeEvent(window, 'resize', this._checkForIntersections, true); - removeEvent(document, 'scroll', this._checkForIntersections, true); - - if (this._domObserver) { - this._domObserver.disconnect(); - this._domObserver = null; - } - } -}; - - -/** - * Scans each observation target for intersection changes and adds them - * to the internal entries queue. If new entries are found, it - * schedules the callback to be invoked. - * @private - */ -IntersectionObserver.prototype._checkForIntersections = function() { - var rootIsInDom = this._rootIsInDom(); - var rootRect = rootIsInDom ? this._getRootRect() : getEmptyRect(); - - this._observationTargets.forEach(function(item) { - var target = item.element; - var targetRect = getBoundingClientRect(target); - var rootContainsTarget = this._rootContainsTarget(target); - var oldEntry = item.entry; - var intersectionRect = rootIsInDom && rootContainsTarget && - this._computeTargetAndRootIntersection(target, rootRect); - - var newEntry = item.entry = new IntersectionObserverEntry({ - time: now(), - target: target, - boundingClientRect: targetRect, - rootBounds: rootRect, - intersectionRect: intersectionRect - }); - - if (!oldEntry) { - this._queuedEntries.push(newEntry); - } else if (rootIsInDom && rootContainsTarget) { - // If the new entry intersection ratio has crossed any of the - // thresholds, add a new entry. - if (this._hasCrossedThreshold(oldEntry, newEntry)) { - this._queuedEntries.push(newEntry); - } - } else { - // If the root is not in the DOM or target is not contained within - // root but the previous entry for this target had an intersection, - // add a new record indicating removal. - if (oldEntry && oldEntry.isIntersecting) { - this._queuedEntries.push(newEntry); - } - } - }, this); - - if (this._queuedEntries.length) { - this._callback(this.takeRecords(), this); - } -}; - - -/** - * Accepts a target and root rect computes the intersection between then - * following the algorithm in the spec. - * TODO(philipwalton): at this time clip-path is not considered. - * https://w3c.github.io/IntersectionObserver/#calculate-intersection-rect-algo - * @param {Element} target The target DOM element - * @param {Object} rootRect The bounding rect of the root after being - * expanded by the rootMargin value. - * @return {?Object} The final intersection rect object or undefined if no - * intersection is found. - * @private - */ -IntersectionObserver.prototype._computeTargetAndRootIntersection = - function(target, rootRect) { - - // If the element isn't displayed, an intersection can't happen. - if (window.getComputedStyle(target).display == 'none') return; - - var targetRect = getBoundingClientRect(target); - var intersectionRect = targetRect; - var parent = getParentNode(target); - var atRoot = false; - - while (!atRoot) { - var parentRect = null; - var parentComputedStyle = parent.nodeType == 1 ? - window.getComputedStyle(parent) : {}; - - // If the parent isn't displayed, an intersection can't happen. - if (parentComputedStyle.display == 'none') return; - - if (parent == this.root || parent == document) { - atRoot = true; - parentRect = rootRect; - } else { - // If the element has a non-visible overflow, and it's not the - // or element, update the intersection rect. - // Note: and cannot be clipped to a rect that's not also - // the document rect, so no need to compute a new intersection. - if (parent != document.body && - parent != document.documentElement && - parentComputedStyle.overflow != 'visible') { - parentRect = getBoundingClientRect(parent); - } - } - - // If either of the above conditionals set a new parentRect, - // calculate new intersection data. - if (parentRect) { - intersectionRect = computeRectIntersection(parentRect, intersectionRect); - - if (!intersectionRect) break; - } - parent = getParentNode(parent); - } - return intersectionRect; -}; - - -/** - * Returns the root rect after being expanded by the rootMargin value. - * @return {Object} The expanded root rect. - * @private - */ -IntersectionObserver.prototype._getRootRect = function() { - var rootRect; - if (this.root) { - rootRect = getBoundingClientRect(this.root); - } else { - // Use / instead of window since scroll bars affect size. - var html = document.documentElement; - var body = document.body; - rootRect = { - top: 0, - left: 0, - right: html.clientWidth || body.clientWidth, - width: html.clientWidth || body.clientWidth, - bottom: html.clientHeight || body.clientHeight, - height: html.clientHeight || body.clientHeight - }; - } - return this._expandRectByRootMargin(rootRect); -}; - - -/** - * Accepts a rect and expands it by the rootMargin value. - * @param {Object} rect The rect object to expand. - * @return {Object} The expanded rect. - * @private - */ -IntersectionObserver.prototype._expandRectByRootMargin = function(rect) { - var margins = this._rootMarginValues.map(function(margin, i) { - return margin.unit == 'px' ? margin.value : - margin.value * (i % 2 ? rect.width : rect.height) / 100; - }); - var newRect = { - top: rect.top - margins[0], - right: rect.right + margins[1], - bottom: rect.bottom + margins[2], - left: rect.left - margins[3] - }; - newRect.width = newRect.right - newRect.left; - newRect.height = newRect.bottom - newRect.top; - - return newRect; -}; - - -/** - * Accepts an old and new entry and returns true if at least one of the - * threshold values has been crossed. - * @param {?IntersectionObserverEntry} oldEntry The previous entry for a - * particular target element or null if no previous entry exists. - * @param {IntersectionObserverEntry} newEntry The current entry for a - * particular target element. - * @return {boolean} Returns true if a any threshold has been crossed. - * @private - */ -IntersectionObserver.prototype._hasCrossedThreshold = - function(oldEntry, newEntry) { - - // To make comparing easier, an entry that has a ratio of 0 - // but does not actually intersect is given a value of -1 - var oldRatio = oldEntry && oldEntry.isIntersecting ? - oldEntry.intersectionRatio || 0 : -1; - var newRatio = newEntry.isIntersecting ? - newEntry.intersectionRatio || 0 : -1; - - // Ignore unchanged ratios - if (oldRatio === newRatio) return; - - for (var i = 0; i < this.thresholds.length; i++) { - var threshold = this.thresholds[i]; - - // Return true if an entry matches a threshold or if the new ratio - // and the old ratio are on the opposite sides of a threshold. - if (threshold == oldRatio || threshold == newRatio || - threshold < oldRatio !== threshold < newRatio) { - return true; - } - } -}; - - -/** - * Returns whether or not the root element is an element and is in the DOM. - * @return {boolean} True if the root element is an element and is in the DOM. - * @private - */ -IntersectionObserver.prototype._rootIsInDom = function() { - return !this.root || containsDeep(document, this.root); -}; - - -/** - * Returns whether or not the target element is a child of root. - * @param {Element} target The target element to check. - * @return {boolean} True if the target element is a child of root. - * @private - */ -IntersectionObserver.prototype._rootContainsTarget = function(target) { - return containsDeep(this.root || document, target); -}; - - -/** - * Adds the instance to the global IntersectionObserver registry if it isn't - * already present. - * @private - */ -IntersectionObserver.prototype._registerInstance = function() { - if (registry.indexOf(this) < 0) { - registry.push(this); - } -}; - - -/** - * Removes the instance from the global IntersectionObserver registry. - * @private - */ -IntersectionObserver.prototype._unregisterInstance = function() { - var index = registry.indexOf(this); - if (index != -1) registry.splice(index, 1); -}; - - -/** - * Returns the result of the performance.now() method or null in browsers - * that don't support the API. - * @return {number} The elapsed time since the page was requested. - */ -function now() { - return window.performance && performance.now && performance.now(); -} - - -/** - * Throttles a function and delays its execution, so it's only called at most - * once within a given time period. - * @param {Function} fn The function to throttle. - * @param {number} timeout The amount of time that must pass before the - * function can be called again. - * @return {Function} The throttled function. - */ -function throttle(fn, timeout) { - var timer = null; - return function () { - if (!timer) { - timer = setTimeout(function() { - fn(); - timer = null; - }, timeout); - } - }; -} - - -/** - * Adds an event handler to a DOM node ensuring cross-browser compatibility. - * @param {Node} node The DOM node to add the event handler to. - * @param {string} event The event name. - * @param {Function} fn The event handler to add. - * @param {boolean} opt_useCapture Optionally adds the even to the capture - * phase. Note: this only works in modern browsers. - */ -function addEvent(node, event, fn, opt_useCapture) { - if (typeof node.addEventListener == 'function') { - node.addEventListener(event, fn, opt_useCapture || false); - } - else if (typeof node.attachEvent == 'function') { - node.attachEvent('on' + event, fn); - } -} - - -/** - * Removes a previously added event handler from a DOM node. - * @param {Node} node The DOM node to remove the event handler from. - * @param {string} event The event name. - * @param {Function} fn The event handler to remove. - * @param {boolean} opt_useCapture If the event handler was added with this - * flag set to true, it should be set to true here in order to remove it. - */ -function removeEvent(node, event, fn, opt_useCapture) { - if (typeof node.removeEventListener == 'function') { - node.removeEventListener(event, fn, opt_useCapture || false); - } - else if (typeof node.detatchEvent == 'function') { - node.detatchEvent('on' + event, fn); - } -} - - -/** - * Returns the intersection between two rect objects. - * @param {Object} rect1 The first rect. - * @param {Object} rect2 The second rect. - * @return {?Object} The intersection rect or undefined if no intersection - * is found. - */ -function computeRectIntersection(rect1, rect2) { - var top = Math.max(rect1.top, rect2.top); - var bottom = Math.min(rect1.bottom, rect2.bottom); - var left = Math.max(rect1.left, rect2.left); - var right = Math.min(rect1.right, rect2.right); - var width = right - left; - var height = bottom - top; - - return (width >= 0 && height >= 0) && { - top: top, - bottom: bottom, - left: left, - right: right, - width: width, - height: height - }; -} - - -/** - * Shims the native getBoundingClientRect for compatibility with older IE. - * @param {Element} el The element whose bounding rect to get. - * @return {Object} The (possibly shimmed) rect of the element. - */ -function getBoundingClientRect(el) { - var rect; - - try { - rect = el.getBoundingClientRect(); - } catch (err) { - // Ignore Windows 7 IE11 "Unspecified error" - // https://github.com/w3c/IntersectionObserver/pull/205 - } - - if (!rect) return getEmptyRect(); - - // Older IE - if (!(rect.width && rect.height)) { - rect = { - top: rect.top, - right: rect.right, - bottom: rect.bottom, - left: rect.left, - width: rect.right - rect.left, - height: rect.bottom - rect.top - }; - } - return rect; -} - - -/** - * Returns an empty rect object. An empty rect is returned when an element - * is not in the DOM. - * @return {Object} The empty rect. - */ -function getEmptyRect() { - return { - top: 0, - bottom: 0, - left: 0, - right: 0, - width: 0, - height: 0 - }; -} - -/** - * Checks to see if a parent element contains a child element (including inside - * shadow DOM). - * @param {Node} parent The parent element. - * @param {Node} child The child element. - * @return {boolean} True if the parent node contains the child node. - */ -function containsDeep(parent, child) { - var node = child; - while (node) { - if (node == parent) return true; - - node = getParentNode(node); - } - return false; -} - - -/** - * Gets the parent node of an element or its host element if the parent node - * is a shadow root. - * @param {Node} node The node whose parent to get. - * @return {Node|null} The parent node or null if no parent exists. - */ -function getParentNode(node) { - var parent = node.parentNode; - - if (parent && parent.nodeType == 11 && parent.host) { - // If the parent is a shadow root, return the host element. - return parent.host; - } - return parent; -} - - -// Exposes the constructors globally. -window.IntersectionObserver = IntersectionObserver; -window.IntersectionObserverEntry = IntersectionObserverEntry; - -}(window, document)); diff --git a/yarn.lock b/yarn.lock index c207206175f..26f75cc7bcf 100644 --- a/yarn.lock +++ b/yarn.lock @@ -1823,11 +1823,6 @@ inquirer@^7.0.0: strip-ansi "^6.0.0" through "^2.3.6" -intersection-observer@^0.5.1: - version "0.5.1" - resolved "https://registry.yarnpkg.com/intersection-observer/-/intersection-observer-0.5.1.tgz#e340fc56ce74290fe2b2394d1ce88c4353ac6dfa" - integrity sha512-Zd7Plneq82kiXFixs7bX62YnuZ0BMRci9br7io88LwDyF3V43cQMI+G5IiTlTNTt+LsDUppl19J/M2Fp9UkH6g== - is-absolute@^1.0.0: version "1.0.0" resolved "https://registry.yarnpkg.com/is-absolute/-/is-absolute-1.0.0.tgz#395e1ae84b11f26ad1795e73c17378e48a301576"