tracking-params/dist/tracking-params.cjs.development.js

Easily get and remove unwanted tracking parameters from URLs.

'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

// Map URLSearchParams to [ key, value ][]
var paramsToEntries = function paramsToEntries(params) {
  var _params = {};
  params.forEach(function (value, key) {
    _params[key] = value;
  });
  return Object.entries(_params);
};

var UNIVERSAL_PARAMS = ['__twitter_impression', '_hsenc', '_openstat', 'action_object_map', 'action_ref_map', 'action_type_map', 'adgroupid', 'amp', 'campaignid', 'CNDID', 'fb_action_ids', 'fb_action_types', 'fb_ref', 'fb_source', 'fbclid', 'feeditemid', 'ga_campaign', 'ga_content', 'ga_medium', 'ga_place', 'ga_source', 'ga_term', 'gclid', 'gs_l', 'hmb_campaign', 'hmb_medium', 'hmb_source', 'mbid', 'mc_cid', 'mc_eid', 'mkt_tok', /pd_rd\w+/, /pf_rd\w+/, 'referrer', 'spJobID', 'spMailingID', 'spReportId', 'spUserID', /utm_\w+/, 'wt_mc_o', 'WT.mc_ev', 'WT.mc_id', 'WT.srch', 'yclid'];
var DOMAIN_PARAMS = [{
  domain: '.',
  params: UNIVERSAL_PARAMS
}, {
  domain: 'amazon',
  params: ['_encoding', 'creative', 'creativeASIN', 'dchild', 'ie', 'linkCode', 'linkId', 'orig', 'psc', 'qid', 'ref', 'refRID', 'sr', 'tag'],
  handler: function handler(url) {
    // Remove /ref=abc at end of url path
    var refPathMatch = /ref=\w+/;
    var newUrl = new URL(url.toString());
    var matches = newUrl.pathname.match(refPathMatch);

    if (!(matches == null ? void 0 : matches.length)) {
      return;
    }

    var startIndex = newUrl.pathname.indexOf(matches[0]);
    newUrl.pathname = newUrl.pathname.substring(0, startIndex);
    var newParams = [{
      key: 'ref',
      value: url.pathname.substring(startIndex + 4)
    }];
    return {
      newCleanUrl: newUrl.toString(),
      newParams: newParams
    };
  }
}, {
  domain: 'bing',
  params: ['cvid', 'form', 'pq', 'qs', 'sc', 'sk', 'sp']
}, {
  domain: 'google',
  params: ['ei', 'gws_rd', 'sei', 'ved']
}, {
  domain: 'instagram',
  params: ['igshid']
}, {
  domain: 'nytimes',
  params: ['emc', 'partner']
}, {
  domain: 'reddit',
  params: ['context', 'ref', 'ref_source', 'st']
}, {
  domain: 'twitter',
  params: ['vertical', 'src', 's', 'ref_src', 'ref_url']
}, {
  domain: 'youtube',
  params: ['ab_channel', 'attr_tag', 'feature', 'kw']
}];

var getTrackingData = function getTrackingData(dirtyUrl) {
  var urlObj = new URL(dirtyUrl);
  var urlData = {
    url: dirtyUrl,
    isDirty: false,
    trackingParams: [],
    cleanUrl: dirtyUrl
  }; // Skip checks if no params

  if (!urlObj.searchParams.toString().length) {
    return urlData;
  } // Loop through domains to find a match
  // If domain match, loop through params
  // If param match:
  // 1. Set `isDirty` to true
  // 2. Add `trackingParams` entry
  // 3. Set `cleanUrl` as url with that param removed


  DOMAIN_PARAMS.forEach(function (domainParams) {
    // Check for domain match
    if (urlObj.hostname.includes(domainParams.domain)) {
      // Copy params to array so they can be freely deleted from urlObj
      var urlParams = paramsToEntries(urlObj.searchParams);
      urlParams.forEach(function (_ref) {
        var key = _ref[0],
            value = _ref[1];
        domainParams.params.forEach(function (badParam) {
          // Check for param key match
          var match = typeof badParam === 'string' ? key === badParam : badParam.test(key);

          if (match) {
            urlData.isDirty = true;
            urlData.trackingParams.push({
              key: key,
              value: value
            });
            urlObj.searchParams["delete"](key);
            urlData.cleanUrl = urlObj.toString();
          }
        });
      }); // Run domain specific handler to further clean URL

      if (typeof domainParams.handler === 'function') {
        var moreInfo = domainParams.handler(urlObj);

        if (moreInfo) {
          var _urlData$trackingPara;

          (_urlData$trackingPara = urlData.trackingParams).push.apply(_urlData$trackingPara, moreInfo.newParams);

          urlData.cleanUrl = moreInfo.newCleanUrl;
        }
      }
    }
  });
  return urlData;
};
var cleanUrl = function cleanUrl(dirtyUrl) {
  return getTrackingData(dirtyUrl).cleanUrl;
};

exports.cleanUrl = cleanUrl;
exports.getTrackingData = getTrackingData;
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