@dailymotion/vast-client/dist/vast-client.js

JavaScript VAST Client

function createAd() {
  let adAttributes = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
  return {
    id: adAttributes.id || null,
    sequence: adAttributes.sequence || null,
    adType: adAttributes.adType || null,
    adServingId: null,
    categories: [],
    expires: null,
    viewableImpression: [],
    system: null,
    title: null,
    description: null,
    advertiser: null,
    pricing: null,
    survey: null,
    // @deprecated in VAST 4.1
    errorURLTemplates: [],
    impressionURLTemplates: [],
    creatives: [],
    extensions: [],
    adVerifications: [],
    blockedAdCategories: [],
    followAdditionalWrappers: true,
    allowMultipleAds: false,
    fallbackOnNoAd: null
  };
}

function createAdVerification() {
  return {
    resource: null,
    vendor: null,
    browserOptional: false,
    apiFramework: null,
    type: null,
    parameters: null,
    trackingEvents: {}
  };
}

function createCompanionAd() {
  let creativeAttributes = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
  return {
    id: creativeAttributes.id || null,
    adType: 'companionAd',
    width: creativeAttributes.width || 0,
    height: creativeAttributes.height || 0,
    assetWidth: creativeAttributes.assetWidth || null,
    assetHeight: creativeAttributes.assetHeight || null,
    expandedWidth: creativeAttributes.expandedWidth || null,
    expandedHeight: creativeAttributes.expandedHeight || null,
    apiFramework: creativeAttributes.apiFramework || null,
    adSlotId: creativeAttributes.adSlotId || null,
    pxratio: creativeAttributes.pxratio || '1',
    renderingMode: creativeAttributes.renderingMode || 'default',
    staticResources: [],
    htmlResources: [],
    iframeResources: [],
    adParameters: null,
    altText: null,
    companionClickThroughURLTemplate: null,
    companionClickTrackingURLTemplates: [],
    trackingEvents: {}
  };
}
function isCompanionAd(ad) {
  return ad.adType === 'companionAd';
}

function createCreative() {
  let creativeAttributes = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
  return {
    id: creativeAttributes.id || null,
    adId: creativeAttributes.adId || null,
    sequence: creativeAttributes.sequence || null,
    apiFramework: creativeAttributes.apiFramework || null,
    universalAdIds: [],
    creativeExtensions: []
  };
}

function createCreativeCompanion() {
  let creativeAttributes = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
  const {
    id,
    adId,
    sequence,
    apiFramework
  } = createCreative(creativeAttributes);
  return {
    id,
    adId,
    sequence,
    apiFramework,
    type: 'companion',
    required: null,
    variations: []
  };
}

const supportedMacros = ['ADCATEGORIES', 'ADCOUNT', 'ADPLAYHEAD', 'ADSERVINGID', 'ADTYPE', 'APIFRAMEWORKS', 'APPBUNDLE', 'ASSETURI', 'BLOCKEDADCATEGORIES', 'BREAKMAXADLENGTH', 'BREAKMAXADS', 'BREAKMAXDURATION', 'BREAKMINADLENGTH', 'BREAKMINDURATION', 'BREAKPOSITION', 'CLICKPOS', 'CLICKTYPE', 'CLIENTUA', 'CONTENTID', 'CONTENTPLAYHEAD',
// @deprecated VAST 4.1
'CONTENTURI', 'DEVICEIP', 'DEVICEUA', 'DOMAIN', 'EXTENSIONS', 'GDPRCONSENT', 'IFA', 'IFATYPE', 'INVENTORYSTATE', 'LATLONG', 'LIMITADTRACKING', 'MEDIAMIME', 'MEDIAPLAYHEAD', 'OMIDPARTNER', 'PAGEURL', 'PLACEMENTTYPE', 'PLAYERCAPABILITIES', 'PLAYERSIZE', 'PLAYERSTATE', 'PODSEQUENCE', 'REGULATIONS', 'SERVERSIDE', 'SERVERUA', 'TRANSACTIONID', 'UNIVERSALADID', 'VASTVERSIONS', 'VERIFICATIONVENDORS'];

function track(URLTemplates, macros, options) {
  const URLs = resolveURLTemplates(URLTemplates, macros, options);
  URLs.forEach(URL => {
    if (typeof window !== 'undefined' && window !== null) {
      const i = new Image();
      i.src = URL;
    }
  });
}

/**
 * Replace the provided URLTemplates with the given values
 *
 * @param {Array} URLTemplates - An array of tracking url templates.
 * @param {Object} [macros={}] - An optional Object of parameters to be used in the tracking calls.
 * @param {Object} [options={}] - An optional Object of options to be used in the tracking calls.
 */
function resolveURLTemplates(URLTemplates) {
  let macros = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
  let options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
  const resolvedURLs = [];
  const URLArray = extractURLsFromTemplates(URLTemplates);

  // Set default value for invalid ERRORCODE
  if (macros['ERRORCODE'] && !options.isCustomCode && !/^[0-9]{3}$/.test(macros['ERRORCODE'])) {
    macros['ERRORCODE'] = 900;
  }

  // Calc random/time based macros
  macros['CACHEBUSTING'] = addLeadingZeros(Math.round(Math.random() * 1.0e8));
  macros['TIMESTAMP'] = new Date().toISOString();

  // RANDOM/random is not defined in VAST 3/4 as a valid macro tho it's used by some adServer (Auditude)
  macros['RANDOM'] = macros['random'] = macros['CACHEBUSTING'];
  for (const macro in macros) {
    macros[macro] = encodeURIComponentRFC3986(macros[macro]);
  }
  for (const URLTemplateKey in URLArray) {
    const resolveURL = URLArray[URLTemplateKey];
    if (typeof resolveURL !== 'string') {
      continue;
    }
    resolvedURLs.push(replaceUrlMacros(resolveURL, macros));
  }
  return resolvedURLs;
}

/**
 * Replace the macros tracking url with their value.
 * If no value is provided for a supported macro and it exists in the url,
 * it will be replaced by -1 as described by the VAST 4.1 iab specifications
 *
 * @param {String} url - Tracking url.
 * @param {Object} macros - Object of macros to be replaced in the tracking calls
 */
function replaceUrlMacros(url, macros) {
  url = replaceMacrosValues(url, macros);
  // match any macros from the url that was not replaced
  const remainingMacros = url.match(/[^[\]]+(?=])/g);
  if (!remainingMacros) {
    return url;
  }
  let supportedRemainingMacros = remainingMacros.filter(macro => supportedMacros.indexOf(macro) > -1);
  if (supportedRemainingMacros.length === 0) {
    return url;
  }
  supportedRemainingMacros = supportedRemainingMacros.reduce((accumulator, macro) => {
    accumulator[macro] = -1;
    return accumulator;
  }, {});
  return replaceMacrosValues(url, supportedRemainingMacros);
}

/**
 * Replace the macros tracking url with their value.
 *
 * @param {String} url - Tracking url.
 * @param {Object} macros - Object of macros to be replaced in the tracking calls
 */
function replaceMacrosValues(url, macros) {
  let replacedMacrosUrl = url;
  for (const key in macros) {
    const value = macros[key];
    // this will match [${key}] and %%${key}%% and replace it
    replacedMacrosUrl = replacedMacrosUrl.replace(new RegExp("(?:\\[|%%)(".concat(key, ")(?:\\]|%%)"), 'g'), value);
  }
  return replacedMacrosUrl;
}

/**
 * Extract the url/s from the URLTemplates.
 *   If the URLTemplates is an array of urls
 *   If the URLTemplates object has a url property
 *   If the URLTemplates is a single string
 *
 * @param {Array|String} URLTemplates - An array|string of url templates.
 */
function extractURLsFromTemplates(URLTemplates) {
  if (Array.isArray(URLTemplates)) {
    return URLTemplates.map(URLTemplate => {
      return URLTemplate && URLTemplate.hasOwnProperty('url') ? URLTemplate.url : URLTemplate;
    });
  }
  return URLTemplates;
}

/**
 * Filter URLTemplates elements .
 *   To be valid, urls should:
 *   - have the same protocol as the client
 *   or
 *   - be protocol-relative urls
 *
 * Returns an object with two arrays
 *    - validUrls : An array of valid URLs
 *    - invalidUrls: An array of invalid URLs
 *
 * @param {Array} URLTemplates - A Array of string/object containing urls templates.
 * @returns {Object}
 *
 */
function filterUrlTemplates(URLTemplates) {
  return URLTemplates.reduce((acc, urlTemplate) => {
    const url = urlTemplate.url || urlTemplate;
    isValidUrl(url) ? acc.validUrls.push(url) : acc.invalidUrls.push(url);
    return acc;
  }, {
    validUrls: [],
    invalidUrls: []
  });
}
function isValidUrl(url) {
  const regex = /^(https?:\/\/|\/\/)/;
  return regex.test(url);
}

/**
 * Returns a boolean after checking if the object exists in the array.
 *   true - if the object exists, false otherwise
 *
 * @param {Object} obj - The object who existence is to be checked.
 * @param {Array} list - List of objects.
 */
function containsTemplateObject(obj, list) {
  for (let i = 0; i < list.length; i++) {
    if (isTemplateObjectEqual(list[i], obj)) {
      return true;
    }
  }
  return false;
}

/**
 * Returns a boolean after comparing two Template objects.
 *   true - if the objects are equivalent, false otherwise
 *
 * @param {Object} obj1
 * @param {Object} obj2
 */
function isTemplateObjectEqual(obj1, obj2) {
  if (obj1 && obj2) {
    const obj1Properties = Object.getOwnPropertyNames(obj1);
    const obj2Properties = Object.getOwnPropertyNames(obj2);

    // If number of properties is different, objects are not equivalent
    if (obj1Properties.length !== obj2Properties.length) {
      return false;
    }
    if (obj1.id !== obj2.id || obj1.url !== obj2.url) {
      return false;
    }
    return true;
  }
  return false;
}

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent
function encodeURIComponentRFC3986(str) {
  return encodeURIComponent(str).replace(/[!'()*]/g, c => "%".concat(c.charCodeAt(0).toString(16)));
}

/**
 * Return a string of the input number with leading zeros defined by the length param
 *
 * @param {Number} input - number to convert
 * @param {Number} length - length of the desired string
 *
 * @return {String}
 */
function addLeadingZeros(input) {
  let length = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 8;
  return input.toString().padStart(length, '0');
}
function isNumeric(n) {
  return !isNaN(parseFloat(n)) && isFinite(n);
}
function flatten(arr) {
  return arr.reduce((flat, toFlatten) => {
    return flat.concat(Array.isArray(toFlatten) ? flatten(toFlatten) : toFlatten);
  }, []);
}

/**
 * Joins two arrays of objects without duplicates
 *
 * @param {Array} arr1
 * @param {Array} arr2
 *
 * @return {Array}
 */
function joinArrayOfUniqueTemplateObjs() {
  let arr1 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
  let arr2 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : [];
  const firstArr = Array.isArray(arr1) ? arr1 : [];
  const secondArr = Array.isArray(arr2) ? arr2 : [];
  const arr = firstArr.concat(secondArr);
  return arr.reduce((res, val) => {
    if (!containsTemplateObject(val, res)) {
      res.push(val);
    }
    return res;
  }, []);
}

/**
 * Check if a provided value is a valid time value according to the IAB definition
 * Check if a provided value is a valid time value according to the IAB definition: Must be a positive number or -1.
 * if not implemented by ad unit or -2 if value is unknown.
 * @param {Number} time
 *
 * @return {Boolean}
 */
function isValidTimeValue(time) {
  return Number.isFinite(time) && time >= -2;
}

/**
 * Check if we are in a browser environment
 * @returns {Boolean}
 */
function isBrowserEnvironment() {
  return typeof window !== 'undefined';
}
function formatMacrosValues(macros) {
  return typeof macros !== 'object' ? macros : JSON.stringify(macros);
}
const util = {
  track,
  resolveURLTemplates,
  extractURLsFromTemplates,
  filterUrlTemplates,
  containsTemplateObject,
  isTemplateObjectEqual,
  encodeURIComponentRFC3986,
  replaceUrlMacros,
  isNumeric,
  flatten,
  joinArrayOfUniqueTemplateObjs,
  isValidTimeValue,
  addLeadingZeros,
  isValidUrl,
  isBrowserEnvironment,
  formatMacrosValues
};

/**
 * This module provides support methods to the parsing classes.
 */

/**
 * Returns the first element of the given node which nodeName matches the given name.
 * @param  {Node} node - The node to use to find a match.
 * @param  {String} name - The name to look for.
 * @return {Object|undefined}
 */
function childByName(node, name) {
  const childNodes = Array.from(node.childNodes);
  return childNodes.find(childNode => childNode.nodeName === name);
}

/**
 * Returns all the elements of the given node which nodeName match the given name.
 * @param  {Node} node - The node to use to find the matches.
 * @param  {String} name - The name to look for.
 * @return {Array}
 */
function childrenByName(node, name) {
  const childNodes = Array.from(node.childNodes);
  return childNodes.filter(childNode => childNode.nodeName === name);
}

/**
 * Converts relative vastAdTagUri.
 * @param  {String} vastAdTagUrl - The url to resolve.
 * @param  {String} originalUrl - The original url.
 * @return {String}
 */
function resolveVastAdTagURI(vastAdTagUrl, originalUrl) {
  if (!originalUrl) {
    return vastAdTagUrl;
  }
  if (vastAdTagUrl.startsWith('//')) {
    const {
      protocol
    } = location;
    return "".concat(protocol).concat(vastAdTagUrl);
  }
  if (!vastAdTagUrl.includes('://')) {
    // Resolve relative URLs (mainly for unit testing)
    const baseURL = originalUrl.slice(0, originalUrl.lastIndexOf('/'));
    return "".concat(baseURL, "/").concat(vastAdTagUrl);
  }
  return vastAdTagUrl;
}

/**
 * Converts a boolean string into a Boolean.
 * @param  {String} booleanString - The boolean string to convert.
 * @return {Boolean}
 */
function parseBoolean(booleanString) {
  return ['true', 'TRUE', 'True', '1'].includes(booleanString);
}

/**
 * Parses a node text (for legacy support).
 * @param  {Object} node - The node to parse the text from.
 * @return {String}
 */
function parseNodeText(node) {
  return node && (node.textContent || node.text || '').trim();
}

/**
 * Copies an attribute from a node to another.
 * @param  {String} attributeName - The name of the attribute to clone.
 * @param  {Object} nodeSource - The source node to copy the attribute from.
 * @param  {Object} nodeDestination - The destination node to copy the attribute at.
 */
function copyNodeAttribute(attributeName, nodeSource, nodeDestination) {
  const attributeValue = nodeSource.getAttribute(attributeName);
  if (attributeValue) {
    nodeDestination.setAttribute(attributeName, attributeValue);
  }
}

/**
 * Converts element attributes into an object, where object key is attribute name
 * and object value is attribute value
 * @param {Element} element
 * @returns {Object}
 */
function parseAttributes(element) {
  const nodeAttributes = Array.from(element.attributes);
  return nodeAttributes.reduce((acc, nodeAttribute) => {
    acc[nodeAttribute.nodeName] = nodeAttribute.nodeValue;
    return acc;
  }, {});
}

/**
 * Parses a String duration into a Number.
 * @param  {String} durationString - The dureation represented as a string.
 * @return {Number}
 */
function parseDuration(durationString) {
  if (durationString === null || typeof durationString === 'undefined') {
    return -1;
  }
  // Some VAST doesn't have an HH:MM:SS duration format but instead jus the number of seconds
  if (util.isNumeric(durationString)) {
    return parseInt(durationString);
  }
  const durationComponents = durationString.split(':');
  if (durationComponents.length !== 3) {
    return -1;
  }
  const secondsAndMS = durationComponents[2].split('.');
  let seconds = parseInt(secondsAndMS[0]);
  if (secondsAndMS.length === 2) {
    seconds += parseFloat("0.".concat(secondsAndMS[1]));
  }
  const minutes = parseInt(durationComponents[1] * 60);
  const hours = parseInt(durationComponents[0] * 60 * 60);
  if (isNaN(hours) || isNaN(minutes) || isNaN(seconds) || minutes > 60 * 60 || seconds > 60) {
    return -1;
  }
  return hours + minutes + seconds;
}

/**
 * Sorts and filters ads that are part of an Ad Pod.
 * @param {Array} ads - An array of ad objects.
 * @returns {Array} An array of sorted ad objects based on the sequence attribute.
 */
function getSortedAdPods() {
  let ads = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
  return ads.filter(ad => parseInt(ad.sequence, 10)).sort((a, b) => a.sequence - b.sequence);
}

/**
 * Filters out AdPods of given ads array and returns only standalone ads without sequence attribute.
 * @param {Array} ads - An array of ad objects.
 * @returns {Array} An array of standalone ad.
 */
function getStandAloneAds() {
  let ads = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
  return ads.filter(ad => !parseInt(ad.sequence, 10));
}

/**
 * Parses the attributes and assign them to object
 * @param  {Object} attributes attribute
 * @param  {Object} verificationObject with properties which can be assigned
 */
function assignAttributes(attributes, verificationObject) {
  if (attributes) {
    Array.from(attributes).forEach(_ref => {
      let {
        nodeName,
        nodeValue
      } = _ref;
      if (nodeName && nodeValue && verificationObject.hasOwnProperty(nodeName)) {
        let value = nodeValue;
        if (typeof verificationObject[nodeName] === 'boolean') {
          value = parseBoolean(value);
        }
        verificationObject[nodeName] = value;
      }
    });
  }
}

/**
 * Merges the data between an unwrapped ad and his wrapper.
 * @param  {Ad} unwrappedAd - The 'unwrapped' Ad.
 * @param  {Ad} wrapper - The wrapper Ad.
 * @return {void}
 */
function mergeWrapperAdData(unwrappedAd, wrapper) {
  var _wrapper$creatives;
  unwrappedAd.errorURLTemplates = wrapper.errorURLTemplates.concat(unwrappedAd.errorURLTemplates);
  unwrappedAd.impressionURLTemplates = wrapper.impressionURLTemplates.concat(unwrappedAd.impressionURLTemplates);
  unwrappedAd.extensions = wrapper.extensions.concat(unwrappedAd.extensions);
  if (wrapper.viewableImpression.length > 0) {
    unwrappedAd.viewableImpression = [...unwrappedAd.viewableImpression, ...wrapper.viewableImpression];
  }

  // values from the child wrapper will be overridden
  unwrappedAd.followAdditionalWrappers = wrapper.followAdditionalWrappers;
  unwrappedAd.allowMultipleAds = wrapper.allowMultipleAds;
  unwrappedAd.fallbackOnNoAd = wrapper.fallbackOnNoAd;
  const wrapperCompanions = (wrapper.creatives || []).filter(creative => creative && creative.type === 'companion');
  const wrapperCompanionClickTracking = wrapperCompanions.reduce((result, creative) => {
    (creative.variations || []).forEach(variation => {
      (variation.companionClickTrackingURLTemplates || []).forEach(companionClickTrackingURLTemplate => {
        if (!util.containsTemplateObject(companionClickTrackingURLTemplate, result)) {
          result.push(companionClickTrackingURLTemplate);
        }
      });
    });
    return result;
  }, []);
  unwrappedAd.creatives = wrapperCompanions.concat(unwrappedAd.creatives);
  const wrapperHasVideoClickTracking = wrapper.videoClickTrackingURLTemplates && wrapper.videoClickTrackingURLTemplates.length;
  const wrapperHasVideoCustomClick = wrapper.videoCustomClickURLTemplates && wrapper.videoCustomClickURLTemplates.length;
  unwrappedAd.creatives.forEach(creative => {
    // merge tracking events
    if (wrapper.trackingEvents && wrapper.trackingEvents[creative.type]) {
      for (const eventName in wrapper.trackingEvents[creative.type]) {
        const urls = wrapper.trackingEvents[creative.type][eventName];
        if (!Array.isArray(creative.trackingEvents[eventName])) {
          creative.trackingEvents[eventName] = [];
        }
        creative.trackingEvents[eventName] = creative.trackingEvents[eventName].concat(urls);
      }
    }
    if (creative.type === 'linear') {
      // merge video click tracking url
      if (wrapperHasVideoClickTracking) {
        creative.videoClickTrackingURLTemplates = creative.videoClickTrackingURLTemplates.concat(wrapper.videoClickTrackingURLTemplates);
      }

      // merge video custom click url
      if (wrapperHasVideoCustomClick) {
        creative.videoCustomClickURLTemplates = creative.videoCustomClickURLTemplates.concat(wrapper.videoCustomClickURLTemplates);
      }

      // VAST 2.0 support - Use Wrapper/linear/clickThrough when Inline/Linear/clickThrough is null
      if (wrapper.videoClickThroughURLTemplate && (creative.videoClickThroughURLTemplate === null || typeof creative.videoClickThroughURLTemplate === 'undefined')) {
        creative.videoClickThroughURLTemplate = wrapper.videoClickThroughURLTemplate;
      }
    }

    // pass wrapper companion trackers to all companions
    if (creative.type === 'companion' && wrapperCompanionClickTracking.length) {
      (creative.variations || []).forEach(variation => {
        variation.companionClickTrackingURLTemplates = util.joinArrayOfUniqueTemplateObjs(variation.companionClickTrackingURLTemplates, wrapperCompanionClickTracking);
      });
    }
  });
  if (wrapper.adVerifications) {
    // As specified by VAST specs unwrapped ads should contains wrapper adVerification script
    unwrappedAd.adVerifications = unwrappedAd.adVerifications.concat(wrapper.adVerifications);
  }
  if (wrapper.blockedAdCategories) {
    unwrappedAd.blockedAdCategories = unwrappedAd.blockedAdCategories.concat(wrapper.blockedAdCategories);
  }

  // Merge Wrapper's creatives containing icon elements
  if ((_wrapper$creatives = wrapper.creatives) !== null && _wrapper$creatives !== void 0 && _wrapper$creatives.length) {
    // As specified by VAST specs, wrapper should not contain any mediafiles
    const wrapperCreativesWithIconsNode = wrapper.creatives.filter(creative => {
      var _creative$icons;
      return ((_creative$icons = creative.icons) === null || _creative$icons === void 0 ? void 0 : _creative$icons.length) && !creative.mediaFiles.length;
    });
    if (wrapperCreativesWithIconsNode.length) {
      unwrappedAd.creatives = unwrappedAd.creatives.concat(wrapperCreativesWithIconsNode);
    }
  }
}
const parserUtils = {
  childByName,
  childrenByName,
  resolveVastAdTagURI,
  parseBoolean,
  parseNodeText,
  copyNodeAttribute,
  parseAttributes,
  parseDuration,
  getStandAloneAds,
  getSortedAdPods,
  assignAttributes,
  mergeWrapperAdData
};

/**
 * This module provides methods to parse a VAST CompanionAd Element.
 */

/**
 * Parses a CompanionAd.
 * @param  {Object} creativeElement - The VAST CompanionAd element to parse.
 * @param  {Object} creativeAttributes - The attributes of the CompanionAd (optional).
 * @return {Object} creative - The creative object.
 */
function parseCreativeCompanion(creativeElement, creativeAttributes) {
  const creative = createCreativeCompanion(creativeAttributes);
  creative.required = creativeElement.getAttribute('required') || null;
  creative.variations = parserUtils.childrenByName(creativeElement, 'Companion').map(companionResource => {
    const companionAd = createCompanionAd(parserUtils.parseAttributes(companionResource));
    companionAd.htmlResources = parserUtils.childrenByName(companionResource, 'HTMLResource').reduce((urls, resource) => {
      const url = parserUtils.parseNodeText(resource);
      return url ? urls.concat(url) : urls;
    }, []);
    companionAd.iframeResources = parserUtils.childrenByName(companionResource, 'IFrameResource').reduce((urls, resource) => {
      const url = parserUtils.parseNodeText(resource);
      return url ? urls.concat(url) : urls;
    }, []);
    companionAd.staticResources = parserUtils.childrenByName(companionResource, 'StaticResource').reduce((urls, resource) => {
      const url = parserUtils.parseNodeText(resource);
      return url ? urls.concat({
        url,
        creativeType: resource.getAttribute('creativeType') || null
      }) : urls;
    }, []);
    companionAd.altText = parserUtils.parseNodeText(parserUtils.childByName(companionResource, 'AltText')) || null;
    const trackingEventsElement = parserUtils.childByName(companionResource, 'TrackingEvents');
    if (trackingEventsElement) {
      parserUtils.childrenByName(trackingEventsElement, 'Tracking').forEach(trackingElement => {
        const eventName = trackingElement.getAttribute('event');
        const trackingURLTemplate = parserUtils.parseNodeText(trackingElement);
        if (eventName && trackingURLTemplate) {
          if (!Array.isArray(companionAd.trackingEvents[eventName])) {
            companionAd.trackingEvents[eventName] = [];
          }
          companionAd.trackingEvents[eventName].push(trackingURLTemplate);
        }
      });
    }
    companionAd.companionClickTrackingURLTemplates = parserUtils.childrenByName(companionResource, 'CompanionClickTracking').map(clickTrackingElement => {
      return {
        id: clickTrackingElement.getAttribute('id') || null,
        url: parserUtils.parseNodeText(clickTrackingElement)
      };
    });
    companionAd.companionClickThroughURLTemplate = parserUtils.parseNodeText(parserUtils.childByName(companionResource, 'CompanionClickThrough')) || null;
    const adParametersElement = parserUtils.childByName(companionResource, 'AdParameters');
    if (adParametersElement) {
      companionAd.adParameters = {
        value: parserUtils.parseNodeText(adParametersElement),
        xmlEncoded: adParametersElement.getAttribute('xmlEncoded') || null
      };
    }
    return companionAd;
  });
  return creative;
}

function createCreativeLinear() {
  let creativeAttributes = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
  const {
    id,
    adId,
    sequence,
    apiFramework
  } = createCreative(creativeAttributes);
  return {
    id,
    adId,
    sequence,
    apiFramework,
    type: 'linear',
    duration: 0,
    skipDelay: null,
    mediaFiles: [],
    mezzanine: null,
    interactiveCreativeFile: null,
    closedCaptionFiles: [],
    videoClickThroughURLTemplate: null,
    videoClickTrackingURLTemplates: [],
    videoCustomClickURLTemplates: [],
    adParameters: null,
    icons: [],
    trackingEvents: {}
  };
}
function isCreativeLinear(ad) {
  return ad.type === 'linear';
}

function createClosedCaptionFile() {
  let closedCaptionAttributes = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
  return {
    type: closedCaptionAttributes.type || null,
    language: closedCaptionAttributes.language || null,
    fileURL: null
  };
}

function createIcon() {
  return {
    program: null,
    height: 0,
    width: 0,
    xPosition: 0,
    yPosition: 0,
    apiFramework: null,
    offset: null,
    duration: 0,
    type: null,
    staticResource: null,
    htmlResource: null,
    iframeResource: null,
    pxratio: '1',
    iconClickThroughURLTemplate: null,
    iconClickTrackingURLTemplates: [],
    iconViewTrackingURLTemplate: null,
    iconClickFallbackImages: [],
    altText: null,
    hoverText: null
  };
}

function createInteractiveCreativeFile() {
  let interactiveCreativeAttributes = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
  return {
    type: interactiveCreativeAttributes.type || null,
    apiFramework: interactiveCreativeAttributes.apiFramework || null,
    variableDuration: parserUtils.parseBoolean(interactiveCreativeAttributes.variableDuration),
    fileURL: null
  };
}

function createMediaFile() {
  return {
    id: null,
    fileURL: null,
    fileSize: 0,
    deliveryType: 'progressive',
    mimeType: null,
    mediaType: null,
    codec: null,
    bitrate: 0,
    minBitrate: 0,
    maxBitrate: 0,
    width: 0,
    height: 0,
    apiFramework: null,
    // @deprecated in VAST 4.1. <InteractiveCreativeFile> should be used instead.
    scalable: null,
    maintainAspectRatio: null
  };
}

function createMezzanine() {
  return {
    id: null,
    fileURL: null,
    delivery: null,
    codec: null,
    type: null,
    width: 0,
    height: 0,
    fileSize: 0,
    mediaType: '2D'
  };
}

/**
 * This module provides methods to parse a VAST Linear Element.
 */

/**
 * Parses a Linear element.
 * @param  {Object} creativeElement - The VAST Linear element to parse.
 * @param  {any} creativeAttributes - The attributes of the Linear (optional).
 * @return {Object} creative - The creativeLinear object.
 */
function parseCreativeLinear(creativeElement, creativeAttributes) {
  let offset;
  const creative = createCreativeLinear(creativeAttributes);
  creative.duration = parserUtils.parseDuration(parserUtils.parseNodeText(parserUtils.childByName(creativeElement, 'Duration')));
  const skipOffset = creativeElement.getAttribute('skipoffset');
  if (typeof skipOffset === 'undefined' || skipOffset === null) {
    creative.skipDelay = null;
  } else if (skipOffset.charAt(skipOffset.length - 1) === '%' && creative.duration !== -1) {
    const percent = parseInt(skipOffset, 10);
    creative.skipDelay = creative.duration * (percent / 100);
  } else {
    creative.skipDelay = parserUtils.parseDuration(skipOffset);
  }
  const videoClicksElement = parserUtils.childByName(creativeElement, 'VideoClicks');
  if (videoClicksElement) {
    const videoClickThroughElement = parserUtils.childByName(videoClicksElement, 'ClickThrough');
    if (videoClickThroughElement) {
      creative.videoClickThroughURLTemplate = {
        id: videoClickThroughElement.getAttribute('id') || null,
        url: parserUtils.parseNodeText(videoClickThroughElement)
      };
    } else {
      creative.videoClickThroughURLTemplate = null;
    }
    parserUtils.childrenByName(videoClicksElement, 'ClickTracking').forEach(clickTrackingElement => {
      creative.videoClickTrackingURLTemplates.push({
        id: clickTrackingElement.getAttribute('id') || null,
        url: parserUtils.parseNodeText(clickTrackingElement)
      });
    });
    parserUtils.childrenByName(videoClicksElement, 'CustomClick').forEach(customClickElement => {
      creative.videoCustomClickURLTemplates.push({
        id: customClickElement.getAttribute('id') || null,
        url: parserUtils.parseNodeText(customClickElement)
      });
    });
  }
  const adParamsElement = parserUtils.childByName(creativeElement, 'AdParameters');
  if (adParamsElement) {
    creative.adParameters = {
      value: parserUtils.parseNodeText(adParamsElement),
      xmlEncoded: adParamsElement.getAttribute('xmlEncoded') || null
    };
  }
  parserUtils.childrenByName(creativeElement, 'TrackingEvents').forEach(trackingEventsElement => {
    parserUtils.childrenByName(trackingEventsElement, 'Tracking').forEach(trackingElement => {
      let eventName = trackingElement.getAttribute('event');
      const trackingURLTemplate = parserUtils.parseNodeText(trackingElement);
      if (eventName && trackingURLTemplate) {
        if (eventName === 'progress') {
          offset = trackingElement.getAttribute('offset');
          if (!offset) {
            return;
          }
          if (offset.charAt(offset.length - 1) === '%') {
            eventName = "progress-".concat(offset);
          } else {
            eventName = "progress-".concat(parserUtils.parseDuration(offset));
          }
        }
        if (!Array.isArray(creative.trackingEvents[eventName])) {
          creative.trackingEvents[eventName] = [];
        }
        creative.trackingEvents[eventName].push(trackingURLTemplate);
      }
    });
  });
  parserUtils.childrenByName(creativeElement, 'MediaFiles').forEach(mediaFilesElement => {
    parserUtils.childrenByName(mediaFilesElement, 'MediaFile').forEach(mediaFileElement => {
      creative.mediaFiles.push(parseMediaFile(mediaFileElement));
    });
    const interactiveCreativeElement = parserUtils.childByName(mediaFilesElement, 'InteractiveCreativeFile');
    if (interactiveCreativeElement) {
      creative.interactiveCreativeFile = parseInteractiveCreativeFile(interactiveCreativeElement);
    }
    const closedCaptionElements = parserUtils.childByName(mediaFilesElement, 'ClosedCaptionFiles');
    if (closedCaptionElements) {
      parserUtils.childrenByName(closedCaptionElements, 'ClosedCaptionFile').forEach(closedCaptionElement => {
        const closedCaptionFile = createClosedCaptionFile(parserUtils.parseAttributes(closedCaptionElement));
        closedCaptionFile.fileURL = parserUtils.parseNodeText(closedCaptionElement);
        creative.closedCaptionFiles.push(closedCaptionFile);
      });
    }
    const mezzanineElement = parserUtils.childByName(mediaFilesElement, 'Mezzanine');
    const requiredAttributes = getRequiredAttributes(mezzanineElement, ['delivery', 'type', 'width', 'height']);
    if (requiredAttributes) {
      const mezzanine = createMezzanine();
      mezzanine.id = mezzanineElement.getAttribute('id');
      mezzanine.fileURL = parserUtils.parseNodeText(mezzanineElement);
      mezzanine.delivery = requiredAttributes.delivery;
      mezzanine.codec = mezzanineElement.getAttribute('codec');
      mezzanine.type = requiredAttributes.type;
      mezzanine.width = parseInt(requiredAttributes.width, 10);
      mezzanine.height = parseInt(requiredAttributes.height, 10);
      mezzanine.fileSize = parseInt(mezzanineElement.getAttribute('fileSize'), 10);
      mezzanine.mediaType = mezzanineElement.getAttribute('mediaType') || '2D';
      creative.mezzanine = mezzanine;
    }
  });
  const iconsElement = parserUtils.childByName(creativeElement, 'Icons');
  if (iconsElement) {
    parserUtils.childrenByName(iconsElement, 'Icon').forEach(iconElement => {
      creative.icons.push(parseIcon(iconElement));
    });
  }
  return creative;
}

/**
 * Parses the MediaFile element from VAST.
 * @param  {Object} mediaFileElement - The VAST MediaFile element.
 * @return {Object} - Parsed mediaFile object.
 */
function parseMediaFile(mediaFileElement) {
  const mediaFile = createMediaFile();
  mediaFile.id = mediaFileElement.getAttribute('id');
  mediaFile.fileURL = parserUtils.parseNodeText(mediaFileElement);
  mediaFile.deliveryType = mediaFileElement.getAttribute('delivery');
  mediaFile.codec = mediaFileElement.getAttribute('codec');
  mediaFile.mimeType = mediaFileElement.getAttribute('type');
  mediaFile.mediaType = mediaFileElement.getAttribute('mediaType') || '2D';
  mediaFile.apiFramework = mediaFileElement.getAttribute('apiFramework');
  mediaFile.fileSize = parseInt(mediaFileElement.getAttribute('fileSize') || 0);
  mediaFile.bitrate = parseInt(mediaFileElement.getAttribute('bitrate') || 0);
  mediaFile.minBitrate = parseInt(mediaFileElement.getAttribute('minBitrate') || 0);
  mediaFile.maxBitrate = parseInt(mediaFileElement.getAttribute('maxBitrate') || 0);
  mediaFile.width = parseInt(mediaFileElement.getAttribute('width') || 0);
  mediaFile.height = parseInt(mediaFileElement.getAttribute('height') || 0);
  const scalable = mediaFileElement.getAttribute('scalable');
  if (scalable && typeof scalable === 'string') {
    mediaFile.scalable = parserUtils.parseBoolean(scalable);
  }
  const maintainAspectRatio = mediaFileElement.getAttribute('maintainAspectRatio');
  if (maintainAspectRatio && typeof maintainAspectRatio === 'string') {
    mediaFile.maintainAspectRatio = parserUtils.parseBoolean(maintainAspectRatio);
  }
  return mediaFile;
}

/**
 * Parses the InteractiveCreativeFile element from VAST MediaFiles node.
 * @param  {Object} interactiveCreativeElement - The VAST InteractiveCreativeFile element.
 * @return {Object} - Parsed interactiveCreativeFile object.
 */
function parseInteractiveCreativeFile(interactiveCreativeElement) {
  const interactiveCreativeFile = createInteractiveCreativeFile(parserUtils.parseAttributes(interactiveCreativeElement));
  interactiveCreativeFile.fileURL = parserUtils.parseNodeText(interactiveCreativeElement);
  return interactiveCreativeFile;
}

/**
 * Parses the Icon element from VAST.
 * @param  {Object} iconElement - The VAST Icon element.
 * @return {Object} - Parsed icon object.
 */
function parseIcon(iconElement) {
  const icon = createIcon();
  icon.program = iconElement.getAttribute('program');
  icon.height = parseInt(iconElement.getAttribute('height') || 0);
  icon.width = parseInt(iconElement.getAttribute('width') || 0);
  icon.xPosition = parseXPosition(iconElement.getAttribute('xPosition'));
  icon.yPosition = parseYPosition(iconElement.getAttribute('yPosition'));
  icon.apiFramework = iconElement.getAttribute('apiFramework');
  icon.pxratio = iconElement.getAttribute('pxratio') || '1';
  icon.offset = parserUtils.parseDuration(iconElement.getAttribute('offset'));
  icon.duration = parserUtils.parseDuration(iconElement.getAttribute('duration'));
  icon.altText = iconElement.getAttribute('altText');
  icon.hoverText = iconElement.getAttribute('hoverText');
  parserUtils.childrenByName(iconElement, 'HTMLResource').forEach(htmlElement => {
    icon.type = htmlElement.getAttribute('creativeType') || 'text/html';
    icon.htmlResource = parserUtils.parseNodeText(htmlElement);
  });
  parserUtils.childrenByName(iconElement, 'IFrameResource').forEach(iframeElement => {
    icon.type = iframeElement.getAttribute('creativeType') || 0;
    icon.iframeResource = parserUtils.parseNodeText(iframeElement);
  });
  parserUtils.childrenByName(iconElement, 'StaticResource').forEach(staticElement => {
    icon.type = staticElement.getAttribute('creativeType') || 0;
    icon.staticResource = parserUtils.parseNodeText(staticElement);
  });
  const iconClicksElement = parserUtils.childByName(iconElement, 'IconClicks');
  if (iconClicksElement) {
    icon.iconClickThroughURLTemplate = parserUtils.parseNodeText(parserUtils.childByName(iconClicksElement, 'IconClickThrough'));
    parserUtils.childrenByName(iconClicksElement, 'IconClickTracking').forEach(iconClickTrackingElement => {
      icon.iconClickTrackingURLTemplates.push({
        id: iconClickTrackingElement.getAttribute('id') || null,
        url: parserUtils.parseNodeText(iconClickTrackingElement)
      });
    });
    const iconClickFallbackImagesElement = parserUtils.childByName(iconClicksElement, 'IconClickFallbackImages');
    if (iconClickFallbackImagesElement) {
      parserUtils.childrenByName(iconClickFallbackImagesElement, 'IconClickFallbackImage').forEach(iconClickFallbackImageElement => {
        icon.iconClickFallbackImages.push({
          url: parserUtils.parseNodeText(iconClickFallbackImageElement) || null,
          width: iconClickFallbackImageElement.getAttribute('width') || null,
          height: iconClickFallbackImageElement.getAttribute('height') || null
        });
      });
    }
  }
  icon.iconViewTrackingURLTemplate = parserUtils.parseNodeText(parserUtils.childByName(iconElement, 'IconViewTracking'));
  return icon;
}

/**
 * Parses an horizontal position into a String ('left' or 'right') or into a Number.
 * @param  {String} xPosition - The x position to parse.
 * @return {String|Number}
 */
function parseXPosition(xPosition) {
  if (['left', 'right'].indexOf(xPosition) !== -1) {
    return xPosition;
  }
  return parseInt(xPosition || 0);
}

/**
 * Parses an vertical position into a String ('top' or 'bottom') or into a Number.
 * @param  {String} yPosition - The x position to parse.
 * @return {String|Number}
 */
function parseYPosition(yPosition) {
  if (['top', 'bottom'].indexOf(yPosition) !== -1) {
    return yPosition;
  }
  return parseInt(yPosition || 0);
}

/**
 * Getting required attributes from element
 * @param  {Object} element - DOM element
 * @param  {Array} attributes - list of attributes
 * @return {Object|null} null if a least one element not present
 */
function getRequiredAttributes(element, attributes) {
  const values = {};
  let error = false;
  attributes.forEach(name => {
    if (!element || !element.getAttribute(name)) {
      error = true;
    } else {
      values[name] = element.getAttribute(name);
    }
  });
  return error ? null : values;
}

function createCreativeNonLinear() {
  let creativeAttributes = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
  const {
    id,
    adId,
    sequence,
    apiFramework
  } = createCreative(creativeAttributes);
  return {
    id,
    adId,
    sequence,
    apiFramework,
    type: 'nonlinear',
    variations: [],
    trackingEvents: {}
  };
}

function createNonLinearAd() {
  return {
    id: null,
    width: 0,
    height: 0,
    expandedWidth: 0,
    expandedHeight: 0,
    scalable: true,
    maintainAspectRatio: true,
    minSuggestedDuration: 0,
    apiFramework: 'static',
    adType: 'nonLinearAd',
    type: null,
    staticResource: null,
    htmlResource: null,
    iframeResource: null,
    nonlinearClickThroughURLTemplate: null,
    nonlinearClickTrackingURLTemplates: [],
    adParameters: null
  };
}
function isNonLinearAd(ad) {
  return ad.adType === 'nonLinearAd';
}

/**
 * This module provides methods to parse a VAST NonLinear Element.
 */

/**
 * Parses a NonLinear element.
 * @param  {any} creativeElement - The VAST NonLinear element to parse.
 * @param  {any} creativeAttributes - The attributes of the NonLinear (optional).
 * @return {Object} creative - The CreativeNonLinear object.
 */
function parseCreativeNonLinear(creativeElement, creativeAttributes) {
  const creative = createCreativeNonLinear(creativeAttributes);
  parserUtils.childrenByName(creativeElement, 'TrackingEvents').forEach(trackingEventsElement => {
    let eventName, trackingURLTemplate;
    parserUtils.childrenByName(trackingEventsElement, 'Tracking').forEach(trackingElement => {
      eventName = trackingElement.getAttribute('event');
      trackingURLTemplate = parserUtils.parseNodeText(trackingElement);
      if (eventName && trackingURLTemplate) {
        if (!Array.isArray(creative.trackingEvents[eventName])) {
          creative.trackingEvents[eventName] = [];
        }
        creative.trackingEvents[eventName].push(trackingURLTemplate);
      }
    });
  });
  parserUtils.childrenByName(creativeElement, 'NonLinear').forEach(nonlinearResource => {
    const nonlinearAd = createNonLinearAd();
    nonlinearAd.id = nonlinearResource.getAttribute('id') || null;
    nonlinearAd.width = nonlinearResource.getAttribute('width');
    nonlinearAd.height = nonlinearResource.getAttribute('height');
    nonlinearAd.expandedWidth = nonlinearResource.getAttribute('expandedWidth');
    nonlinearAd.expandedHeight = nonlinearResource.getAttribute('expandedHeight');
    nonlinearAd.scalable = parserUtils.parseBoolean(nonlinearResource.getAttribute('scalable'));
    nonlinearAd.maintainAspectRatio = parserUtils.parseBoolean(nonlinearResource.getAttribute('maintainAspectRatio'));
    nonlinearAd.minSuggestedDuration = parserUtils.parseDuration(nonlinearResource.getAttribute('minSuggestedDuration'));
    nonlinearAd.apiFramework = nonlinearResource.getAttribute('apiFramework');
    parserUtils.childrenByName(nonlinearResource, 'HTMLResource').forEach(htmlElement => {
      nonlinearAd.type = htmlElement.getAttribute('creativeType') || 'text/html';
      nonlinearAd.htmlResource = parserUtils.parseNodeText(htmlElement);
    });
    parserUtils.childrenByName(nonlinearResource, 'IFrameResource').forEach(iframeElement => {
      nonlinearAd.type = iframeElement.getAttribute('creativeType') || 0;
      nonlinearAd.iframeResource = parserUtils.parseNodeText(iframeElement);
    });
    parserUtils.childrenByName(nonlinearResource, 'StaticResource').forEach(staticElement => {
      nonlinearAd.type = staticElement.getAttribute('creativeType') || 0;
      nonlinearAd.staticResource = parserUtils.parseNodeText(staticElement);
    });
    const adParamsElement = parserUtils.childByName(nonlinearResource, 'AdParameters');
    if (adParamsElement) {
      nonlinearAd.adParameters = {
        value: parserUtils.parseNodeText(adParamsElement),
        xmlEncoded: adParamsElement.getAttribute('xmlEncoded') || null
      };
    }
    nonlinearAd.nonlinearClickThroughURLTemplate = parserUtils.parseNodeText(parserUtils.childByName(nonlinearResource, 'NonLinearClickThrough'));
    parserUtils.childrenByName(nonlinearResource, 'NonLinearClickTracking').forEach(clickTrackingElement => {
      nonlinearAd.nonlinearClickTrackingURLTemplates.push({
        id: clickTrackingElement.getAttribute('id') || null,
        url: parserUtils.parseNodeText(clickTrackingElement)
      });
    });
    creative.variations.push(nonlinearAd);
  });
  return creative;
}

function createExtension() {
  return {
    name: null,
    value: null,
    attributes: {},
    children: []
  };
}
function isEmptyExtension(extension) {
  return extension.value === null && Object.keys(extension.attributes).length === 0 && extension.children.length === 0;
}

/**
 * Parses an array of Extension elements.
 * @param  {Node[]} extensions - The array of extensions to parse.
 * @param  {String} type - The type of extensions to parse.(Ad|Creative)
 * @return {AdExtension[]|CreativeExtension[]} - The nodes parsed to extensions
 */
function parseExtensions(extensions) {
  const exts = [];
  extensions.forEach(extNode => {
    const ext = _parseExtension(extNode);
    if (ext) {
      exts.push(ext);
    }
  });
  return exts;
}

/**
 * Parses an extension child node
 * @param {Node} extNode - The extension node to parse
 * @return {AdExtension|CreativeExtension|null} - The node parsed to extension
 */
function _parseExtension(extNode) {
  // Ignore comments
  if (extNode.nodeName === '#comment') return null;
  const ext = createExtension();
  const extNodeAttrs = extNode.attributes;
  const childNodes = extNode.childNodes;
  ext.name = extNode.nodeName;

  // Parse attributes
  if (extNode.attributes) {
    for (const extNodeAttrKey in extNodeAttrs) {
      if (extNodeAttrs.hasOwnProperty(extNodeAttrKey)) {
        const extNodeAttr = extNodeAttrs[extNodeAttrKey];
        if (extNodeAttr.nodeName && extNodeAttr.nodeValue) {
          ext.attributes[extNodeAttr.nodeName] = extNodeAttr.nodeValue;
        }
      }
    }
  }

  // Parse all children
  for (const childNodeKey in childNodes) {
    if (childNodes.hasOwnProperty(childNodeKey)) {
      const parsedChild = _parseExtension(childNodes[childNodeKey]);
      if (parsedChild) {
        ext.children.push(parsedChild);
      }
    }
  }

  /*
    Only parse value of Nodes with only eather no children or only a cdata or text
    to avoid useless parsing that would result to a concatenation of all children
  */
  if (ext.children.length === 0 || ext.children.length === 1 && ['#cdata-section', '#text'].indexOf(ext.children[0].name) >= 0) {
    const txt = parserUtils.parseNodeText(extNode);
    if (txt !== '') {
      ext.value = txt;
    }

    // Remove the children if it's a cdata or simply text to avoid useless children
    ext.children = [];
  }

  // Only return not empty objects to not pollute extentions
  return isEmptyExtension(ext) ? null : ext;
}

/**
 * Parses the creatives from the Creatives Node.
 * @param  {any} creativeNodes - The creative nodes to parse.
 * @return {Array<Creative>} - An array of Creative objects.
 */
function parseCreatives(creativeNodes) {
  const creatives = [];
  creativeNodes.forEach(creativeElement => {
    const creativeAttributes = {
      id: creativeElement.getAttribute('id') || null,
      adId: parseCreativeAdIdAttribute(creativeElement),
      sequence: creativeElement.getAttribute('sequence') || null,
      apiFramework: creativeElement.getAttribute('apiFramework') || null
    };
    const universalAdIds = [];
    const universalAdIdElements = parserUtils.childrenByName(creativeElement, 'UniversalAdId');
    universalAdIdElements.forEach(universalAdIdElement => {
      const universalAdId = {
        idRegistry: universalAdIdElement.getAttribute('idRegistry') || 'unknown',
        value: parserUtils.parseNodeText(universalAdIdElement)
      };
      universalAdIds.push(universalAdId);
    });
    let creativeExtensions;
    const creativeExtensionsElement = parserUtils.childByName(creativeElement, 'CreativeExtensions');
    if (creativeExtensionsElement) {
      creativeExtensions = parseExtensions(parserUtils.childrenByName(creativeExtensionsElement, 'CreativeExtension'));
    }
    for (const creativeTypeElementKey in creativeElement.childNodes) {
      const creativeTypeElement = creativeElement.childNodes[creativeTypeElementKey];
      let parsedCreative;
      switch (creativeTypeElement.nodeName) {
        case 'Linear':
          parsedCreative = parseCreativeLinear(creativeTypeElement, creativeAttributes);
          break;
        case 'NonLinearAds':
          parsedCreative = parseCreativeNonLinear(creativeTypeElement, creativeAttributes);
          break;
        case 'CompanionAds':
          parsedCreative = parseCreativeCompanion(creativeTypeElement, creativeAttributes);
          break;
      }
      if (parsedCreative) {
        if (universalAdIds) {
          parsedCreative.universalAdIds = universalAdIds;
        }
        if (creativeExtensions) {
          parsedCreative.creativeExtensions = creativeExtensions;
        }
        creatives.push(parsedCreative);
      }
    }
  });
  return creatives;
}

/**
 * Parses the creative adId Attribute.
 * @param  {any} creativeElement - The creative element to retrieve the adId from.
 * @return {String|null}
 */
function parseCreativeAdIdAttribute(creativeElement) {
  return creativeElement.getAttribute('AdID') ||
  // VAST 2 spec
  creativeElement.getAttribute('adID') ||
  // VAST 3 spec
  creativeElement.getAttribute('adId') ||
  // VAST 4 spec
  null;
}

const requiredValues = {
  Wrapper: {
    subElements: ['VASTAdTagURI', 'Impression']
  },
  BlockedAdCategories: {
    attributes: ['authority']
  },
  InLine: {
    subElements: ['AdSystem', 'AdTitle', 'Impression', 'AdServingId', 'Creatives']
  },
  Category: {
    attributes: ['authority']
  },
  Pricing: {
    attributes: ['model', 'currency']
  },
  Verification: {
    oneOfinLineResources: ['JavaScriptResource', 'ExecutableResource'],
    attributes: ['vendor']
  },
  UniversalAdId: {
    attributes: ['idRegistry']
  },
  JavaScriptResource: {
    attributes: ['apiFramework', 'browserOptional']
  },
  ExecutableResource: {
    attributes: ['apiFramework', 'type']
  },
  Tracking: {
    attributes: ['event']
  },
  Creatives: {
    subElements: ['Creative']
  },
  Creative: {
    subElements: ['UniversalAdId']
  },
  Linear: {
    subElements: ['MediaFiles', 'D