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* Returns a function, that, as long as it continues to be invoked, will not\n * be triggered. The function will be called after it stops being called for\n * N milliseconds. If `immediate` is passed, trigger the function on the\n * leading edge, instead of the trailing. The function also has a property 'clear' \n * that is a function which will clear the timer to prevent previously scheduled executions. \n *\n * @source underscore.js\n * @see http://unscriptable.com/2009/03/20/debouncing-javascript-methods/\n * @param {Function} function to wrap\n * @param {Number} timeout in ms (`100`)\n * @param {Boolean} whether to execute at the beginning (`false`)\n * @api public\n */\nfunction debounce(func, wait, immediate){\n  var timeout, args, context, timestamp, result;\n  if (null == wait) wait = 100;\n\n  function later() {\n    var last = Date.now() - timestamp;\n\n    if (last < wait && last >= 0) {\n      timeout = setTimeout(later, wait - last);\n    } else {\n      timeout = null;\n      if (!immediate) {\n        result = func.apply(context, args);\n        context = args = null;\n      }\n    }\n  };\n\n  var debounced = function(){\n    context = this;\n    args = arguments;\n    timestamp = Date.now();\n    var callNow = immediate && !timeout;\n    if (!timeout) timeout = setTimeout(later, wait);\n    if (callNow) {\n      result = func.apply(context, args);\n      context = args = null;\n    }\n\n    return result;\n  };\n\n  debounced.clear = function() {\n    if (timeout) {\n      clearTimeout(timeout);\n      timeout = null;\n    }\n  };\n  \n  debounced.flush = function() {\n    if (timeout) {\n      result = func.apply(context, args);\n      context = args = null;\n      \n      clearTimeout(timeout);\n      timeout = null;\n    }\n  };\n\n  return debounced;\n};\n\n// Adds compatibility for ES modules\ndebounce.debounce = debounce;\n\nmodule.exports = debounce;\n","const DEFAULT_THROTTLE_INTERVAL = 100\n\n/**\n * Throttles method execution to prevent some performance bottlenecks\n * @param {Function} fn method to throttle\n * @param {Number} interval milliseconds for the method to be delayed\n */\nfunction throttle(fn, interval = DEFAULT_THROTTLE_INTERVAL) {\n  let inThrottle\n  let lastFunc\n  let lastRan\n\n  return function() {\n    if (inThrottle === true) {\n      clearTimeout(lastFunc)\n      lastFunc = setTimeout(function() {\n        if (Date.now() - lastRan >= interval) {\n          fn.apply(this, arguments)\n          lastRan = Date.now()\n        }\n      }, interval - (Date.now() - lastRan))\n    } else {\n      fn.apply(this, arguments)\n      lastRan = Date.now()\n      inThrottle = true\n    }\n  }\n}\n\nexport default throttle\n","import noop from './noop'\nimport throttle from './throttle'\n\n/**\n * Constructor for element that should be hunted\n * @constructor Hunted\n * @param {Node} element\n * @param {Object} config\n */\nclass Hunted {\n  constructor(element, config) {\n    this.element = element\n\n    // instantiate element as not visible\n    this.visible = false\n\n    // extend properties from config or fallback to prototype values\n    for (var prop in config) {\n      if (Object.hasOwnProperty.call(config, prop)) {\n        this[prop] = config[prop]\n      }\n    }\n\n    // replace options with dataset if present\n    if (typeof element.dataset !== 'undefined') {\n      if (typeof element.dataset.huntPersist !== 'undefined') {\n        try {\n          this.persist = JSON.parse(element.dataset.huntPersist)\n        } catch (e) {}\n      }\n      if (typeof element.dataset.huntOffset !== 'undefined') {\n        try {\n          this.offset = JSON.parse(element.dataset.huntOffset)\n        } catch (e) {}\n      }\n    }\n  }\n}\n\n// protoype values\nHunted.prototype.offset = 0\nHunted.prototype.persist = false\nHunted.prototype.enter = noop\nHunted.prototype.leave = noop\n\n/**\n * Creates and initializes observer\n * @constructor Hunt\n * @param {Node|NodeList|Array} target\n * @param {Object} options\n */\nclass Hunt {\n  constructor(target, options) {\n    // sanity check for first argument\n    const isValidTarget =\n      (target && target.nodeType === 1) || typeof target.length === 'number'\n    if (!isValidTarget) {\n      throw new TypeError(\n        'hunt: observer first argument should be a node or a list of nodes'\n      )\n    }\n    // sanity check for second argument\n    if (typeof options !== 'object') {\n      throw new TypeError('hunt: observer second argument should be an object')\n    }\n\n    // turn target to array\n    if (target.nodeType === 1) {\n      this.__huntedElements__ = [new Hunted(target, options)]\n    } else {\n      const targetArray = [].slice.call(target)\n      this.__huntedElements__ = targetArray.map((t) => new Hunted(t, options))\n    }\n\n    // hoist viewport metrics\n    this.__viewportHeight__ = window.innerHeight\n\n    // connect observer and pass in throttle interval\n    this.__connect__(options.throttleInterval)\n  }\n\n  /**\n   * Assign throttled actions and add listeners\n   * @param {Number} throttleInterval\n   * @method __connect__\n   * @memberof Hunt\n   */\n  __connect__(throttleInterval) {\n    // throttle actions\n    this.__throttledHuntElements__ = throttle(\n      this.__huntElements__.bind(this),\n      throttleInterval\n    )\n    this.__throttledUpdateMetrics__ = throttle(\n      this.__updateMetrics__.bind(this),\n      throttleInterval\n    )\n\n    // add listeners\n    window.addEventListener('scroll', this.__throttledHuntElements__)\n    window.addEventListener('resize', this.__throttledUpdateMetrics__)\n\n    // run first check\n    this.__huntElements__()\n  }\n\n  /**\n   * Checks if hunted elements are visible and apply callbacks\n   * @method __huntElements__\n   * @memberof Hunt\n   */\n  __huntElements__() {\n    let position = this.__huntedElements__.length\n\n    while (position) {\n      --position\n      const hunted = this.__huntedElements__[position]\n      const rect = hunted.element.getBoundingClientRect()\n      const isOnViewport =\n        rect.top - hunted.offset < this.__viewportHeight__ &&\n        rect.top >= -(rect.height + hunted.offset)\n\n      /*\n       * trigger (enter) event if element comes from a non visible state and the scrolled\n       * viewport has reached the visible range of the element without exceeding it\n       */\n      if (hunted.visible === false && isOnViewport === true) {\n        hunted.enter.call(null, hunted.element)\n        hunted.visible = true\n        // when the leave callback method is not set and hunting should not persist remove element\n        if (hunted.leave === noop && hunted.persist !== true) {\n          this.__huntedElements__.splice(position, 1)\n\n          // end observer activity when there are no more elements\n          if (this.__huntedElements__.length === 0) {\n            this.disconnect()\n          }\n        }\n      }\n\n      /*\n       * trigger (leave) event if element comes from a visible state\n       * and it's out of the visible range its bottom or top limit\n       */\n      if (hunted.visible === true && isOnViewport === false) {\n        hunted.leave.call(null, hunted.element)\n        hunted.visible = false\n        // when hunting should not persist remove element\n        if (hunted.persist !== true) {\n          this.__huntedElements__.splice(position, 1)\n\n          // end observer activity when there are no more elements\n          if (this.__huntedElements__.length === 0) {\n            this.disconnect()\n          }\n        }\n      }\n    }\n  }\n\n  /**\n   * Update viewport tracked height and runs a check\n   * @method __updateMetrics__\n   * @memberof Hunt\n   */\n  __updateMetrics__() {\n    this.__viewportHeight__ = window.innerHeight\n    this.__huntElements__()\n  }\n\n  /**\n   * Remove listeners and stops observing elements\n   * @method disconnect\n   * @memberof Hunt\n   */\n  disconnect() {\n    // remove listeners\n    window.removeEventListener('scroll', this.__throttledHuntElements__)\n    window.removeEventListener('resize', this.__throttledUpdateMetrics__)\n  }\n\n  /**\n   * __huntElements__ public alias\n   * @method trigger\n   * @memberof Hunt\n   */\n  trigger() {\n    this.__huntElements__()\n  }\n}\n\nexport default Hunt\n","import { debounce } from 'debounce';\r\nimport hunt from 'huntjs';\r\nimport { ResizeObserver as Polyfill } from '@juggle/resize-observer';\r\nconst ResizeObserver = window.ResizeObserver || Polyfill;\r\n\r\nconst defaultPosterVideoInitDelay = 5000; // the delay, once the poster image has loaded, before we load the video iframe\r\n\r\nclass HeroVideoVimeo {\r\n\r\n    constructor(el) {\r\n        this.wrapper = el;\r\n        this.controls = this.wrapper.querySelector('.hero--video--control');\r\n        this.loadingSprite = this.wrapper.querySelector('.hero--video-loading-sprite');\r\n        this.playButton = this.controls.querySelector('button.play');\r\n        this.soundButton = this.controls.querySelector('button.sound');\r\n        this.started = false;\r\n        this.userPaused = false;\r\n        this.muted = true;\r\n        this.hasPoster = false;\r\n        this.crossfadePoster = false;\r\n        this.videoInitDelay = defaultPosterVideoInitDelay;\r\n        this.inner = {\r\n            poster : this.wrapper.querySelector('.hero--poster-image'),\r\n            posterImg : this.wrapper.querySelector('.hero--poster-image img'),\r\n            el : this.wrapper.querySelector('.hero--video-inner:first-child'),\r\n            top : 0,\r\n            left : 0,\r\n            width : 0,\r\n            height : 0\r\n        }\r\n        // are we dealing with a poster image?\r\n        if(this.inner.posterImg != null) {\r\n            this.hasPoster = true;\r\n            this.inner.el.classList.add('has-poster');\r\n            // crossfade?\r\n            this.crossfadePoster = this.inner.poster.dataset.crossfade == 'true';\r\n            if(this.crossfadePoster) this.inner.el.classList.add('crossfade-poster');\r\n            // custom init delay value?\r\n            let delay = parseInt(this.inner.poster.dataset.delay);\r\n            if(delay > 0) this.videoInitDelay = delay;\r\n        }\r\n        this.ratioHeightByWidth = 9 / 16;\r\n        this.ratioWidthByHeight = 16 / 9;\r\n        // find video id in data attribute\r\n        this.videoId = this.wrapper.dataset.heroVideoId;\r\n        // add resize observer to hero element\r\n        this.ro = new ResizeObserver(entries => {\r\n            for (let entry of entries) {\r\n                const cr = entry.contentRect;\r\n                debounce(this.resize(Math.ceil(cr.width), Math.ceil(cr.height)), 200);\r\n            }\r\n        });\r\n        this.ro.observe(this.wrapper);\r\n        // init video based on poster image\r\n        if(this.videoId != null) {\r\n            if(this.hasPoster) {\r\n                if (this.inner.posterImg.complete) {\r\n                    setTimeout(() => {\r\n                        this.loadPlayer();\r\n                    }, this.videoInitDelay);\r\n                } else {\r\n                    let _this = this;\r\n                    this.inner.posterImg.addEventListener('load', () => {\r\n                        setTimeout(() => {\r\n                            _this.loadPlayer();\r\n                        }, _this.videoInitDelay);\r\n                    }, {once: true});\r\n                }\r\n            } else {\r\n                this.loadPlayer();\r\n            }\r\n        }\r\n    }\r\n\r\n    async loadPlayer() {\r\n        let script = document.createElement('script');\r\n        script.type = 'text/javascript';\r\n        script.src = 'https://player.vimeo.com/api/player.js';\r\n        script.defer = true;\r\n        script.async = true;\r\n        document.head.appendChild(script);\r\n        script.onload = () => {\r\n            this.initVideo();\r\n        };\r\n    }\r\n\r\n    initVideo() {\r\n        // add video\r\n        this.video = new Vimeo.Player(this.inner.el, {\r\n            id: this.videoId,\r\n            loop: true,\r\n            background: true\r\n        });\r\n        let thisInstance = this;\r\n        // hook up control button?\r\n        if(this.playButton !== null) {\r\n            this.playButton_play = this.playButton.querySelector('.hero--video--control--play');\r\n            this.playButton_pause = this.playButton.querySelector('.hero--video--control--pause');\r\n            this.playButton_pause.removeAttribute('hidden');\r\n            // add behaviours\r\n            this.video.on('play', ()=> {\r\n                this.playButton_play.setAttribute('aria-hidden', true);\r\n                this.playButton_pause.setAttribute('aria-hidden', false);\r\n                // fade video in when it starts playback for the first time\r\n                if(!this.started) {\r\n                    this.inner.el.classList.add('reveal');\r\n                    this.controls.classList.add('reveal');\r\n                    if(this.loadingSprite != null) this.loadingSprite.classList.add('hidden');\r\n                    this.started = true;\r\n                }\r\n            });\r\n            this.video.on('pause', ()=> {\r\n                this.playButton_play.setAttribute('aria-hidden', false);\r\n                this.playButton_pause.setAttribute('aria-hidden', true);\r\n            });\r\n            this.playButton.onclick = () => {\r\n                thisInstance.video.getPaused().then(function(paused) {\r\n                    if(!paused) {\r\n                        thisInstance.video.pause();\r\n                        thisInstance.userPaused = true;\r\n                    } else {\r\n                        thisInstance.video.play();\r\n                        thisInstance.userPaused = false;\r\n                    }\r\n                });\r\n            };\r\n        }\r\n        // hook up optional sound control button?\r\n        if(this.soundButton !== null) {\r\n            this.soundButton_on = this.soundButton.querySelector('.hero--video--control--sound-on');\r\n            this.soundButton_off = this.soundButton.querySelector('.hero--video--control--sound-off');\r\n            this.soundButton_off.removeAttribute('hidden');\r\n            this.soundButton.onclick = () => {\r\n                if(thisInstance.muted) {\r\n                    thisInstance.video.setMuted(false).then(() => {\r\n                        thisInstance.soundButton_on.setAttribute('aria-hidden', true);\r\n                        thisInstance.soundButton_off.setAttribute('aria-hidden', false);\r\n                        thisInstance.muted = false;\r\n                    });\r\n                } else {\r\n                    thisInstance.video.setMuted(true).then(() => {\r\n                        thisInstance.soundButton_on.setAttribute('aria-hidden', false);\r\n                        thisInstance.soundButton_off.setAttribute('aria-hidden', true);\r\n                        thisInstance.muted = true;\r\n                    });\r\n                }\r\n            }\r\n        }\r\n        // add hunt to pause video if scrolled offscreen\r\n        let fixedWrapper = document.querySelector('.hero--fixed-visual--wrapper');\r\n        this.hunt = new hunt(fixedWrapper != null ? fixedWrapper : this.wrapper, {\r\n            leave: function () {\r\n                thisInstance.video.getPaused().then(function(paused) {\r\n                    if(!paused) thisInstance.video.pause();\r\n                });\r\n            },\r\n            enter: function () {\r\n                thisInstance.video.getPaused().then(function(paused) {\r\n                    if(paused && !thisInstance.userPaused) thisInstance.video.play();\r\n                });\r\n            },\r\n            persist: true\r\n        });\r\n    }\r\n\r\n    resize(getWidth, getHeight) {\r\n        let ratio = getHeight/getWidth;\r\n        if(ratio < this.ratioHeightByWidth) {\r\n            // use full width\r\n            this.inner.width = getWidth;\r\n            this.inner.height = Math.ceil(getWidth * this.ratioHeightByWidth);\r\n            this.inner.top = ((getHeight - this.inner.height) / 2).toFixed(1);\r\n            this.inner.left = 0;\r\n        } else {\r\n            // use full height\r\n            this.inner.height = getHeight;\r\n            this.inner.width = Math.ceil(getHeight * this.ratioWidthByHeight);\r\n            this.inner.top = 0;\r\n            this.inner.left = ((getWidth - this.inner.width) / 2).toFixed(1);\r\n        }\r\n        this.inner.el.style = `top: ${this.inner.top}px; left: ${this.inner.left}px; width: ${this.inner.width}px; height: ${this.inner.height}px;`;\r\n    }\r\n\r\n}\r\n\r\n// export the default function to create\r\nexport function createFrom(wrappers) {\r\n    wrappers.forEach((node) => {\r\n        // if node is an element\r\n        if (node.nodeType === 1) {\r\n            new HeroVideoVimeo(node);\r\n        }\r\n    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