diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 36fd2895702..016f4055216 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -51,6 +51,7 @@ When you are adding code to Prebid.js, or modifying code that isn't covered by a
 - If you need to check `adloader.loadExternalScript` in a test, use a `stub` rather than a `spy`. `spy`s trigger a network call which can result in a `script error` and cause unrelated unit tests to fail. `stub`s will let you gather information about the `adloader.loadExternalScript` call without affecting external resources
 - If your test makes ajax requests, use the global xhr stub in `test/mocks/xhr`. Do not use your own `sinon.useFakeXMLHttpRequest()` or `sinon.createFakeServer()`.
 - When writing tests you may use ES2015 syntax if desired
+- If your test relies on `Window` or `global` object, do not mutate that object directly. Instead, create a separate copy of that object and perform operations on that new copy.
 
 ### Test Examples
 Prebid.js already has many tests. Read them to see how Prebid.js is tested, and for inspiration:
diff --git a/browsers.json b/browsers.json
index 9042d7d0627..91e0548d78a 100644
--- a/browsers.json
+++ b/browsers.json
@@ -7,11 +7,11 @@
     "device": null,
     "os": "Windows"
   },
-  "bs_edge_16_windows_10": {
+  "bs_edge_18_windows_10": {
     "base": "BrowserStack",
     "os_version": "10",
     "browser": "edge",
-    "browser_version": "16.0",
+    "browser_version": "18.0",
     "device": null,
     "os": "Windows"
   },
@@ -23,43 +23,43 @@
     "device": null,
     "os": "Windows"
   },
-  "bs_chrome_74_windows_10": {
+  "bs_chrome_80_windows_10": {
     "base": "BrowserStack",
     "os_version": "10",
     "browser": "chrome",
-    "browser_version": "74.0",
+    "browser_version": "80.0",
     "device": null,
     "os": "Windows"
   },
-  "bs_chrome_75_windows_10": {
+  "bs_chrome_79_windows_10": {
     "base": "BrowserStack",
     "os_version": "10",
     "browser": "chrome",
-    "browser_version": "75.0",
+    "browser_version": "79.0",
     "device": null,
     "os": "Windows"
   },
-  "bs_firefox_66_windows_10": {
+  "bs_firefox_73_windows_10": {
     "base": "BrowserStack",
     "os_version": "10",
     "browser": "firefox",
-    "browser_version": "66.0",
+    "browser_version": "73.0",
     "device": null,
     "os": "Windows"
   },
-  "bs_firefox_67_windows_10": {
+  "bs_firefox_72_windows_10": {
     "base": "BrowserStack",
     "os_version": "10",
     "browser": "firefox",
-    "browser_version": "67.0",
+    "browser_version": "72.0",
     "device": null,
     "os": "Windows"
   },
-  "bs_safari_11_mac_high_sierra": {
+  "bs_safari_11_mac_catalina": {
     "base": "BrowserStack",
-    "os_version": "High Sierra",
+    "os_version": "Catalina",
     "browser": "safari",
-    "browser_version": "11.1",
+    "browser_version": "13.0",
     "device": null,
     "os": "OS X"
   },
diff --git a/gulpfile.js b/gulpfile.js
index a3f94cb9b88..111bd9dc3bb 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -67,11 +67,11 @@ function lint(done) {
   if (argv.nolint) {
     return done();
   }
-  const isFixed = function(file) {
+  const isFixed = function (file) {
     return file.eslint != null && file.eslint.fixed;
   }
-  return gulp.src(['src/**/*.js', 'modules/**/*.js', 'test/**/*.js'], {base: './'})
-    .pipe(gulpif(argv.nolintfix, eslint(), eslint({fix: true})))
+  return gulp.src(['src/**/*.js', 'modules/**/*.js', 'test/**/*.js'], { base: './' })
+    .pipe(gulpif(argv.nolintfix, eslint(), eslint({ fix: true })))
     .pipe(eslint.format('stylish'))
     .pipe(eslint.failAfterError())
     .pipe(gulpif(isFixed, gulp.dest('./')));
@@ -160,7 +160,7 @@ function nodeBundle(modules) {
       .on('error', (err) => {
         reject(err);
       })
-      .pipe(through.obj(function(file, enc, done) {
+      .pipe(through.obj(function (file, enc, done) {
         resolve(file.contents.toString(enc));
         done();
       }));
@@ -199,7 +199,7 @@ function bundle(dev, moduleArr) {
   return gulp.src(
     entries
   )
-    .pipe(gulpif(dev, sourcemaps.init({loadMaps: true})))
+    .pipe(gulpif(dev, sourcemaps.init({ loadMaps: true })))
     .pipe(concat(outputFileName))
     .pipe(gulpif(!argv.manualEnable, footer('\n<%= global %>.processQueue();', {
       global: prebid.globalVarName
@@ -239,7 +239,7 @@ function test(done) {
     }
 
     //run mock-server
-    const mockServer = spawn('node', ['./test/mock-server/index.js', '--port='+mockServerPort]);
+    const mockServer = spawn('node', ['./test/mock-server/index.js', '--port=' + mockServerPort]);
     mockServer.stdout.on('data', (data) => {
       console.log(`stdout: ${data}`);
     });
@@ -273,7 +273,7 @@ function test(done) {
 }
 
 function newKarmaCallback(done) {
-  return function(exitCode) {
+  return function (exitCode) {
     if (exitCode) {
       done(new Error('Karma tests failed with exit code ' + exitCode));
       if (argv.browserstack) {
@@ -296,7 +296,7 @@ function testCoverage(done) {
 function coveralls() { // 2nd arg is a dependency: 'test' must be finished
   // first send results of istanbul's test coverage to coveralls.io.
   return gulp.src('gulpfile.js', { read: false }) // You have to give it a file, but you don't
-  // have to read it.
+    // have to read it.
     .pipe(shell('cat build/coverage/lcov.info | node_modules/coveralls/bin/coveralls.js'));
 }
 
@@ -326,10 +326,10 @@ function setupE2e(done) {
   done();
 }
 
-gulp.task('updatepath', function(){
+gulp.task('updatepath', function () {
   return gulp.src(['build/dist/*.js'])
-  .pipe(replace('https://ib.adnxs.com/ut/v3/prebid', 'http://' + host + ':' + mockServerPort + '/'))
-  .pipe(gulp.dest('build/dist'));
+    .pipe(replace('https://ib.adnxs.com/ut/v3/prebid', 'http://' + host + ':' + mockServerPort + '/'))
+    .pipe(gulp.dest('build/dist'));
 });
 
 // support tasks
diff --git a/karma.conf.maker.js b/karma.conf.maker.js
index 2a120151f14..290d31aa2a5 100644
--- a/karma.conf.maker.js
+++ b/karma.conf.maker.js
@@ -88,7 +88,7 @@ function setBrowsers(karmaConf, browserstack) {
       karmaConf.browserStack.startTunnel = false;
       karmaConf.browserStack.tunnelIdentifier = process.env.BROWSERSTACK_LOCAL_IDENTIFIER;
     }
-    karmaConf.customLaunchers = require('./browsers.json')
+    karmaConf.customLaunchers = require('./browsers.json');
     karmaConf.browsers = Object.keys(karmaConf.customLaunchers);
   } else {
     var isDocker = require('is-docker')();
@@ -162,11 +162,11 @@ module.exports = function(codeCoverage, browserstack, watchMode, file) {
     // Continuous Integration mode
     // if true, Karma captures browsers, runs the tests and exits
     singleRun: !watchMode,
-    browserDisconnectTimeout: 10000, // default 2000
-    browserDisconnectTolerance: 1, // default 0
-    browserNoActivityTimeout: 4 * 60 * 1000, // default 10000
-    captureTimeout: 4 * 60 * 1000, // default 60000,
-    processKillTimeout: 10000, // default 2000
+    browserDisconnectTimeout: 3e5, // default 2000
+    browserNoActivityTimeout: 3e5, // default 10000
+    captureTimeout: 3e5, // default 60000,
+    browserDisconnectTolerance: 3,
+    concurrency: 5,
 
     plugins: plugins
   }
diff --git a/modules/adagioBidAdapter.js b/modules/adagioBidAdapter.js
index 4b8536a954b..d24350542a4 100644
--- a/modules/adagioBidAdapter.js
+++ b/modules/adagioBidAdapter.js
@@ -83,12 +83,12 @@ if (canAccessTopWindow()) {
 }
 
 const _features = {
-  getPrintNumber: function(adUnitCode) {
+  getPrintNumber: function (adUnitCode) {
     const adagioAdUnit = _getOrAddAdagioAdUnit(adUnitCode);
     return adagioAdUnit.printNumber || 1;
   },
 
-  getPageDimensions: function() {
+  getPageDimensions: function () {
     const viewportDims = _features.getViewPortDimensions().split('x');
     const w = utils.getWindowTop();
     const body = w.document.body;
@@ -101,7 +101,7 @@ const _features = {
     return viewportDims[0] + 'x' + pageHeight;
   },
 
-  getViewPortDimensions: function() {
+  getViewPortDimensions: function () {
     let viewPortWidth;
     let viewPortHeight;
     const w = utils.getWindowTop();
@@ -118,7 +118,7 @@ const _features = {
     return viewPortWidth + 'x' + viewPortHeight;
   },
 
-  isDomLoading: function() {
+  isDomLoading: function () {
     const w = utils.getWindowTop();
     let performance = w.performance || w.msPerformance || w.webkitPerformance || w.mozPerformance;
     let domLoading = -1;
@@ -130,7 +130,7 @@ const _features = {
     return domLoading;
   },
 
-  getSlotPosition: function(element) {
+  getSlotPosition: function (element) {
     if (!element) return '';
 
     const w = utils.getWindowTop();
@@ -164,11 +164,11 @@ const _features = {
     return position.x + 'x' + position.y;
   },
 
-  getTimestamp: function() {
+  getTimestamp: function () {
     return Math.floor(new Date().getTime() / 1000) - new Date().getTimezoneOffset() * 60;
   },
 
-  getDevice: function() {
+  getDevice: function () {
     if (!canAccessTopWindow()) return false;
     const w = utils.getWindowTop();
     const ua = w.navigator.userAgent;
@@ -182,14 +182,14 @@ const _features = {
     return 2; // personal computers
   },
 
-  getBrowser: function() {
+  getBrowser: function () {
     const w = utils.getWindowTop();
     const ua = w.navigator.userAgent;
     const uaLowerCase = ua.toLowerCase();
     return /Edge\/\d./i.test(ua) ? 'edge' : uaLowerCase.indexOf('chrome') > 0 ? 'chrome' : uaLowerCase.indexOf('firefox') > 0 ? 'firefox' : uaLowerCase.indexOf('safari') > 0 ? 'safari' : uaLowerCase.indexOf('opera') > 0 ? 'opera' : uaLowerCase.indexOf('msie') > 0 || w.MSStream ? 'ie' : 'unknow';
   },
 
-  getOS: function() {
+  getOS: function () {
     const w = window.top;
     const ua = w.navigator.userAgent;
     const uaLowerCase = ua.toLowerCase();
@@ -198,9 +198,11 @@ const _features = {
 }
 
 function _pushInAdagioQueue(ob) {
-  if (!canAccessTopWindow()) return;
-  const w = utils.getWindowTop();
-  w.ADAGIO.queue.push(ob);
+  try {
+    if (!canAccessTopWindow()) return;
+    const w = utils.getWindowTop();
+    w.ADAGIO.queue.push(ob);
+  } catch (e) {}
 };
 
 function _getOrAddAdagioAdUnit(adUnitCode) {
@@ -342,42 +344,45 @@ export const spec = {
 
   supportedMediaType: SUPPORTED_MEDIA_TYPES,
 
-  isBidRequestValid: function(bid) {
+  isBidRequestValid: function (bid) {
     const { adUnitCode, auctionId, sizes, bidder, params, mediaTypes } = bid;
     const { organizationId, site, placement, adUnitElementId } = bid.params;
     let isValid = false;
 
-    if (canAccessTopWindow()) {
-      const w = utils.getWindowTop();
-      w.ADAGIO = w.ADAGIO || {};
-      w.ADAGIO.adUnits = w.ADAGIO.adUnits || {};
-      w.ADAGIO.pbjsAdUnits = w.ADAGIO.pbjsAdUnits || [];
-      isValid = !!(organizationId && site && placement && adUnitElementId);
-      const tempAdUnits = w.ADAGIO.pbjsAdUnits.filter((adUnit) => adUnit.code !== adUnitCode);
-      tempAdUnits.push({
-        code: adUnitCode,
-        sizes: (mediaTypes && mediaTypes.banner && Array.isArray(mediaTypes.banner.sizes)) ? mediaTypes.banner.sizes : sizes,
-        bids: [{
-          bidder,
-          params
-        }]
-      });
-      w.ADAGIO.pbjsAdUnits = tempAdUnits;
-
-      if (isValid === true) {
-        let printNumber = _computePrintNumber(adUnitCode);
-        w.ADAGIO.adUnits[adUnitCode] = {
-          auctionId: auctionId,
-          pageviewId: _getPageviewId(),
-          printNumber
-        };
+    try {
+      if (canAccessTopWindow()) {
+        const w = utils.getWindowTop();
+        w.ADAGIO = w.ADAGIO || {};
+        w.ADAGIO.adUnits = w.ADAGIO.adUnits || {};
+        w.ADAGIO.pbjsAdUnits = w.ADAGIO.pbjsAdUnits || [];
+        isValid = !!(organizationId && site && placement && adUnitElementId);
+        const tempAdUnits = w.ADAGIO.pbjsAdUnits.filter((adUnit) => adUnit.code !== adUnitCode);
+        tempAdUnits.push({
+          code: adUnitCode,
+          sizes: (mediaTypes && mediaTypes.banner && Array.isArray(mediaTypes.banner.sizes)) ? mediaTypes.banner.sizes : sizes,
+          bids: [{
+            bidder,
+            params
+          }]
+        });
+        w.ADAGIO.pbjsAdUnits = tempAdUnits;
+
+        if (isValid === true) {
+          let printNumber = _computePrintNumber(adUnitCode);
+          w.ADAGIO.adUnits[adUnitCode] = {
+            auctionId: auctionId,
+            pageviewId: _getPageviewId(),
+            printNumber
+          };
+        }
       }
+    } catch (e) {
+      return isValid;
     }
-
     return isValid;
   },
 
-  buildRequests: function(validBidRequests, bidderRequest) {
+  buildRequests: function (validBidRequests, bidderRequest) {
     // AdagioBidAdapter works when window.top can be reached only
     if (!bidderRequest.refererInfo.reachedTop) return [];
 
@@ -427,7 +432,7 @@ export const spec = {
     return requests;
   },
 
-  interpretResponse: function(serverResponse, bidRequest) {
+  interpretResponse: function (serverResponse, bidRequest) {
     let bidResponses = [];
     try {
       const response = serverResponse.body;
@@ -460,7 +465,7 @@ export const spec = {
     return bidResponses;
   },
 
-  getUserSyncs: function(syncOptions, serverResponses) {
+  getUserSyncs: function (syncOptions, serverResponses) {
     if (!serverResponses.length || serverResponses[0].body === '' || !serverResponses[0].body.userSyncs) {
       return false;
     }
diff --git a/package-lock.json b/package-lock.json
index 06d14496209..9d7e9135122 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -65,9 +65,9 @@
       }
     },
     "@babel/generator": {
-      "version": "7.8.7",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.8.7.tgz",
-      "integrity": "sha512-DQwjiKJqH4C3qGiyQCAExJHoZssn49JTMJgZ8SANGgVFdkupcUhLOdkAeoC6kmHZCPfoDG5M0b6cFlSN5wW7Ew==",
+      "version": "7.8.8",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.8.8.tgz",
+      "integrity": "sha512-HKyUVu69cZoclptr8t8U5b6sx6zoWjh8jiUhnuj3MpZuKT2dJ8zPTuiy31luq32swhI0SpwItCIlU8XW7BZeJg==",
       "dev": true,
       "requires": {
         "@babel/types": "^7.8.7",
@@ -120,14 +120,14 @@
       }
     },
     "@babel/helper-create-regexp-features-plugin": {
-      "version": "7.8.6",
-      "resolved": "https://registry.npmjs.org/@babel/helper-create-regexp-features-plugin/-/helper-create-regexp-features-plugin-7.8.6.tgz",
-      "integrity": "sha512-bPyujWfsHhV/ztUkwGHz/RPV1T1TDEsSZDsN42JPehndA+p1KKTh3npvTadux0ZhCrytx9tvjpWNowKby3tM6A==",
+      "version": "7.8.8",
+      "resolved": "https://registry.npmjs.org/@babel/helper-create-regexp-features-plugin/-/helper-create-regexp-features-plugin-7.8.8.tgz",
+      "integrity": "sha512-LYVPdwkrQEiX9+1R29Ld/wTrmQu1SSKYnuOk3g0CkcZMA1p0gsNxJFj/3gBdaJ7Cg0Fnek5z0DsMULePP7Lrqg==",
       "dev": true,
       "requires": {
         "@babel/helper-annotate-as-pure": "^7.8.3",
         "@babel/helper-regex": "^7.8.3",
-        "regexpu-core": "^4.6.0"
+        "regexpu-core": "^4.7.0"
       }
     },
     "@babel/helper-define-map": {
@@ -316,9 +316,9 @@
       }
     },
     "@babel/parser": {
-      "version": "7.8.7",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.8.7.tgz",
-      "integrity": "sha512-9JWls8WilDXFGxs0phaXAZgpxTZhSk/yOYH2hTHC0X1yC7Z78IJfvR1vJ+rmJKq3I35td2XzXzN6ZLYlna+r/A==",
+      "version": "7.8.8",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.8.8.tgz",
+      "integrity": "sha512-mO5GWzBPsPf6865iIbzNE0AvkKF3NE+2S3eRUpE+FE07BOAkXh6G+GW/Pj01hhXjve1WScbaIO4UlY1JKeqCcA==",
       "dev": true
     },
     "@babel/plugin-proposal-async-generator-functions": {
@@ -393,12 +393,12 @@
       }
     },
     "@babel/plugin-proposal-unicode-property-regex": {
-      "version": "7.8.3",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-unicode-property-regex/-/plugin-proposal-unicode-property-regex-7.8.3.tgz",
-      "integrity": "sha512-1/1/rEZv2XGweRwwSkLpY+s60za9OZ1hJs4YDqFHCw0kYWYwL5IFljVY1MYBL+weT1l9pokDO2uhSTLVxzoHkQ==",
+      "version": "7.8.8",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-unicode-property-regex/-/plugin-proposal-unicode-property-regex-7.8.8.tgz",
+      "integrity": "sha512-EVhjVsMpbhLw9ZfHWSx2iy13Q8Z/eg8e8ccVWt23sWQK5l1UdkoLJPN5w69UA4uITGBnEZD2JOe4QOHycYKv8A==",
       "dev": true,
       "requires": {
-        "@babel/helper-create-regexp-features-plugin": "^7.8.3",
+        "@babel/helper-create-regexp-features-plugin": "^7.8.8",
         "@babel/helper-plugin-utils": "^7.8.3"
       }
     },
@@ -539,9 +539,9 @@
       }
     },
     "@babel/plugin-transform-destructuring": {
-      "version": "7.8.3",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-destructuring/-/plugin-transform-destructuring-7.8.3.tgz",
-      "integrity": "sha512-H4X646nCkiEcHZUZaRkhE2XVsoz0J/1x3VVujnn96pSoGCtKPA99ZZA+va+gK+92Zycd6OBKCD8tDb/731bhgQ==",
+      "version": "7.8.8",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-destructuring/-/plugin-transform-destructuring-7.8.8.tgz",
+      "integrity": "sha512-eRJu4Vs2rmttFCdhPUM3bV0Yo/xPSdPw6ML9KHs/bjB4bLA5HXlbvYXPOD5yASodGod+krjYx21xm1QmL8dCJQ==",
       "dev": true,
       "requires": {
         "@babel/helper-plugin-utils": "^7.8.3"
@@ -687,9 +687,9 @@
       }
     },
     "@babel/plugin-transform-parameters": {
-      "version": "7.8.7",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-parameters/-/plugin-transform-parameters-7.8.7.tgz",
-      "integrity": "sha512-brYWaEPTRimOctz2NDA3jnBbDi7SVN2T4wYuu0aqSzxC3nozFZngGaw29CJ9ZPweB7k+iFmZuoG3IVPIcXmD2g==",
+      "version": "7.8.8",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-transform-parameters/-/plugin-transform-parameters-7.8.8.tgz",
+      "integrity": "sha512-hC4Ld/Ulpf1psQciWWwdnUspQoQco2bMzSrwU6TmzRlvoYQe4rQFy9vnCZDTlVeCQj0JPfL+1RX0V8hCJvkgBA==",
       "dev": true,
       "requires": {
         "@babel/helper-call-delegate": "^7.8.7",
@@ -856,9 +856,9 @@
       },
       "dependencies": {
         "regenerator-runtime": {
-          "version": "0.13.4",
-          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.4.tgz",
-          "integrity": "sha512-plpwicqEzfEyTQohIKktWigcLzmNStMGwbOUbykx51/29Z3JOGYldaaNGK7ngNXV+UcoqvIMmloZ48Sr74sd+g==",
+          "version": "0.13.5",
+          "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.5.tgz",
+          "integrity": "sha512-ZS5w8CpKFinUzOwW3c83oPeVXoNsrLsaCoLtJvAClH135j/R77RuymhiSErhm2lKcwSCIpmvIWSbDkIfAqKQlA==",
           "dev": true
         }
       }
@@ -1375,9 +1375,9 @@
       }
     },
     "acorn": {
-      "version": "5.7.3",
-      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.3.tgz",
-      "integrity": "sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==",
+      "version": "5.7.4",
+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.4.tgz",
+      "integrity": "sha512-1D++VG7BhrtvQpNbBzovKNc1FLGGEE/oGe7b9xJm/RFHMBeUaUGpluV9RLjZa47YFdPcDAenEYuq9pQPcMdLJg==",
       "dev": true
     },
     "acorn-dynamic-import": {
@@ -3262,12 +3262,28 @@
         "tryer": "^1.0.1"
       }
     },
+    "big-integer": {
+      "version": "1.6.48",
+      "resolved": "https://registry.npmjs.org/big-integer/-/big-integer-1.6.48.tgz",
+      "integrity": "sha512-j51egjPa7/i+RdiRuJbPdJ2FIUYYPhvYLjzoYbcMMm62ooO6F94fETG4MTs46zPAF9Brs04OajboA/qTGuz78w==",
+      "dev": true
+    },
     "big.js": {
       "version": "5.2.2",
       "resolved": "https://registry.npmjs.org/big.js/-/big.js-5.2.2.tgz",
       "integrity": "sha512-vyL2OymJxmarO8gxMr0mhChsO9QGwhynfuu4+MHTAW6czfq9humCB7rKpUjDd9YUiDPU4mzpyupFSvOClAwbmQ==",
       "dev": true
     },
+    "binary": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/binary/-/binary-0.3.0.tgz",
+      "integrity": "sha1-n2BVO8XOjDOG87VTz/R0Yq3sqnk=",
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-        "streamroller": "0.7.0"
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@@ -13198,6 +13346,12 @@
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@@ -13684,9 +13838,9 @@
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@@ -13698,9 +13852,9 @@
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@@ -13742,17 +13896,17 @@
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+      "resolved": "https://registry.npmjs.org/regexpu-core/-/regexpu-core-4.7.0.tgz",
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-        "regjsgen": "^0.5.0",
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@@ -13762,9 +13916,9 @@
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+      "resolved": "https://registry.npmjs.org/regjsparser/-/regjsparser-0.6.4.tgz",
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@@ -14994,17 +15148,27 @@
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+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/streamroller/-/streamroller-1.0.6.tgz",
+      "integrity": "sha512-3QC47Mhv3/aZNFpDDVO44qQb9gwB9QggMEE0sQmkTAwBVYdBRWISdsywlkfm5II1Q5y/pmrHflti/IgmIzdDBg==",
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-        "date-format": "^1.2.0",
-        "debug": "^3.1.0",
-        "mkdirp": "^0.5.1",
-        "readable-stream": "^2.3.0"
+        "async": "^2.6.2",
+        "date-format": "^2.0.0",
+        "debug": "^3.2.6",
+        "fs-extra": "^7.0.1",
+        "lodash": "^4.17.14"
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+        "async": {
+          "version": "2.6.3",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.3.tgz",
+          "integrity": "sha512-zflvls11DCy+dQWzTW2dzuilv8Z5X/pjfmZOWba6TNIVDm+2UDaJmXSOXlasHKfNBs8oo3M0aT50fDEWfKZjXg==",
+          "dev": true,
+          "requires": {
+            "lodash": "^4.17.14"
+          }
+        },
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           "resolved": "https://registry.npmjs.org/debug/-/debug-3.2.6.tgz",
@@ -15014,6 +15178,26 @@
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+        "fs-extra": {
+          "version": "7.0.1",
+          "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-7.0.1.tgz",
+          "integrity": "sha512-YJDaCJZEnBmcbw13fvdAM9AwNOJwOzrE4pqMqBq5nFiEqXUqHwlK4B+3pUw6JNvfSPtX05xFHtYy/1ni01eGCw==",
+          "dev": true,
+          "requires": {
+            "graceful-fs": "^4.1.2",
+            "jsonfile": "^4.0.0",
+            "universalify": "^0.1.0"
+          }
+        },
+        "jsonfile": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/jsonfile/-/jsonfile-4.0.0.tgz",
+          "integrity": "sha1-h3Gq4HmbZAdrdmQPygWPnBDjPss=",
+          "dev": true,
+          "requires": {
+            "graceful-fs": "^4.1.6"
+          }
+        },
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           "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
@@ -15573,6 +15757,12 @@
         "punycode": "^2.1.0"
       }
     },
+    "traverse": {
+      "version": "0.3.9",
+      "resolved": "https://registry.npmjs.org/traverse/-/traverse-0.3.9.tgz",
+      "integrity": "sha1-cXuPIgzAu3tE5AUUwisui7xw2Lk=",
+      "dev": true
+    },
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       "resolved": "https://registry.npmjs.org/trim/-/trim-0.0.1.tgz",
@@ -15838,15 +16028,15 @@
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-      "resolved": "https://registry.npmjs.org/unicode-match-property-value-ecmascript/-/unicode-match-property-value-ecmascript-1.1.0.tgz",
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+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/unicode-match-property-value-ecmascript/-/unicode-match-property-value-ecmascript-1.2.0.tgz",
+      "integrity": "sha512-wjuQHGQVofmSJv1uVISKLE5zO2rNGzM/KCYZch/QQvez7C1hUhBIuZ701fYXExuufJFMPhv2SyL8CyoIfMLbIQ==",
       "dev": true
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     "unicode-property-aliases-ecmascript": {
-      "version": "1.0.5",
-      "resolved": "https://registry.npmjs.org/unicode-property-aliases-ecmascript/-/unicode-property-aliases-ecmascript-1.0.5.tgz",
-      "integrity": "sha512-L5RAqCfXqAwR3RriF8pM0lU0w4Ryf/GgzONwi6KnL1taJQa7x1TCxdJnILX59WIGOwR57IVxn7Nej0fz1Ny6fw==",
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/unicode-property-aliases-ecmascript/-/unicode-property-aliases-ecmascript-1.1.0.tgz",
+      "integrity": "sha512-PqSoPh/pWetQ2phoj5RLiaqIk4kCNwoV3CI+LfGmWLKI3rE3kl1h59XpX2BjgDrmbxD9ARtQobPGU1SguCYuQg==",
       "dev": true
     },
     "unified": {
@@ -15945,6 +16135,12 @@
         "unist-util-is": "^3.0.0"
       }
     },
+    "universalify": {
+      "version": "0.1.2",
+      "resolved": "https://registry.npmjs.org/universalify/-/universalify-0.1.2.tgz",
+      "integrity": "sha512-rBJeI5CXAlmy1pV+617WB9J63U6XcazHHF2f2dbJix4XzpUF0RS3Zbj0FGIOCAva5P/d/GBOYaACQ1w+0azUkg==",
+      "dev": true
+    },
     "unpipe": {
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       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
@@ -15990,6 +16186,31 @@
         }
       }
     },
+    "unzipper": {
+      "version": "0.9.15",
+      "resolved": "https://registry.npmjs.org/unzipper/-/unzipper-0.9.15.tgz",
+      "integrity": "sha512-2aaUvO4RAeHDvOCuEtth7jrHFaCKTSXPqUkXwADaLBzGbgZGzUDccoEdJ5lW+3RmfpOZYNx0Rw6F6PUzM6caIA==",
+      "dev": true,
+      "requires": {
+        "big-integer": "^1.6.17",
+        "binary": "~0.3.0",
+        "bluebird": "~3.4.1",
+        "buffer-indexof-polyfill": "~1.0.0",
+        "duplexer2": "~0.1.4",
+        "fstream": "^1.0.12",
+        "listenercount": "~1.0.1",
+        "readable-stream": "~2.3.6",
+        "setimmediate": "~1.0.4"
+      },
+      "dependencies": {
+        "bluebird": {
+          "version": "3.4.7",
+          "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.4.7.tgz",
+          "integrity": "sha1-9y12C+Cbf3bQjtj66Ysomo0F+rM=",
+          "dev": true
+        }
+      }
+    },
     "upath": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/upath/-/upath-1.2.0.tgz",
@@ -16821,13 +17042,13 @@
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-      "version": "3.6.0",
-      "resolved": "https://registry.npmjs.org/webpack-bundle-analyzer/-/webpack-bundle-analyzer-3.6.0.tgz",
-      "integrity": "sha512-orUfvVYEfBMDXgEKAKVvab5iQ2wXneIEorGNsyuOyVYpjYrI7CUOhhXNDd3huMwQ3vNNWWlGP+hzflMFYNzi2g==",
+      "version": "3.6.1",
+      "resolved": "https://registry.npmjs.org/webpack-bundle-analyzer/-/webpack-bundle-analyzer-3.6.1.tgz",
+      "integrity": "sha512-Nfd8HDwfSx1xBwC+P8QMGvHAOITxNBSvu/J/mCJvOwv+G4VWkU7zir9SSenTtyCi0LnVtmsc7G5SZo1uV+bxRw==",
       "dev": true,
       "requires": {
-        "acorn": "^6.0.7",
-        "acorn-walk": "^6.1.1",
+        "acorn": "^7.1.1",
+        "acorn-walk": "^7.1.1",
         "bfj": "^6.1.1",
         "chalk": "^2.4.1",
         "commander": "^2.18.0",
@@ -16842,9 +17063,15 @@
       },
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-          "version": "6.4.1",
-          "resolved": "https://registry.npmjs.org/acorn/-/acorn-6.4.1.tgz",
-          "integrity": "sha512-ZVA9k326Nwrj3Cj9jlh3wGFutC2ZornPNARZwsNYqQYgN0EsV2d53w5RN/co65Ohn4sUAUtb1rSUAOD6XN9idA==",
+          "version": "7.1.1",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-7.1.1.tgz",
+          "integrity": "sha512-add7dgA5ppRPxCFJoAGfMDi7PIBXq1RtGo7BhbLaxwrXPOmw8gq48Y9ozT01hUKy9byMjlR20EJhu5zlkErEkg==",
+          "dev": true
+        },
+        "acorn-walk": {
+          "version": "7.1.1",
+          "resolved": "https://registry.npmjs.org/acorn-walk/-/acorn-walk-7.1.1.tgz",
+          "integrity": "sha512-wdlPY2tm/9XBr7QkKlq0WQVgiuGTX6YWPyRyBviSoScBuLfTVQhvwg6wJ369GJ/1nPfTLMfnrFIfjqVg6d+jQQ==",
           "dev": true
         },
         "ejs": {
@@ -17134,15 +17361,6 @@
             "is-posix-bracket": "^0.1.0"
           }
         },
-        "expand-range": {
-          "version": "1.8.2",
-          "resolved": "https://registry.npmjs.org/expand-range/-/expand-range-1.8.2.tgz",
-          "integrity": "sha1-opnv/TNf4nIeuujiV+x5ZE/IUzc=",
-          "dev": true,
-          "requires": {
-            "fill-range": "^2.1.0"
-          }
-        },
         "extglob": {
           "version": "0.3.2",
           "resolved": "https://registry.npmjs.org/extglob/-/extglob-0.3.2.tgz",
@@ -17152,19 +17370,6 @@
             "is-extglob": "^1.0.0"
           }
         },
-        "fill-range": {
-          "version": "2.2.4",
-          "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-2.2.4.tgz",
-          "integrity": "sha512-cnrcCbj01+j2gTG921VZPnHbjmdAf8oQV/iGeV2kZxGSyfYjjTyY79ErsK1WJWMpw6DaApEX72binqJE+/d+5Q==",
-          "dev": true,
-          "requires": {
-            "is-number": "^2.1.0",
-            "isobject": "^2.0.0",
-            "randomatic": "^3.0.0",
-            "repeat-element": "^1.1.2",
-            "repeat-string": "^1.5.2"
-          }
-        },
         "glob-parent": {
           "version": "2.0.0",
           "resolved": "https://registry.npmjs.org/glob-parent/-/glob-parent-2.0.0.tgz",
@@ -17207,24 +17412,6 @@
             "is-extglob": "^1.0.0"
           }
         },
-        "is-number": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/is-number/-/is-number-2.1.0.tgz",
-          "integrity": "sha1-Afy7s5NGOlSPL0ZszhbezknbkI8=",
-          "dev": true,
-          "requires": {
-            "kind-of": "^3.0.2"
-          }
-        },
-        "isobject": {
-          "version": "2.1.0",
-          "resolved": "https://registry.npmjs.org/isobject/-/isobject-2.1.0.tgz",
-          "integrity": "sha1-8GVWEJaj8dou9GJy+BXIQNh+DIk=",
-          "dev": true,
-          "requires": {
-            "isarray": "1.0.0"
-          }
-        },
         "json5": {
           "version": "0.5.1",
           "resolved": "https://registry.npmjs.org/json5/-/json5-0.5.1.tgz",
diff --git a/package.json b/package.json
index 071ebe71c6c..aa2dd9ee9d9 100755
--- a/package.json
+++ b/package.json
@@ -58,9 +58,9 @@
     "is-docker": "^1.1.0",
     "istanbul": "^0.4.5",
     "istanbul-instrumenter-loader": "^3.0.0",
-    "karma": "^3.1.3",
+    "karma": "^4.0.0",
     "karma-babel-preprocessor": "^6.0.1",
-    "karma-browserstack-launcher": "^1.3.0",
+    "karma-browserstack-launcher": "1.4.0",
     "karma-chai": "^0.1.0",
     "karma-chrome-launcher": "^2.2.0",
     "karma-coverage": "^2.0.1",
diff --git a/test/spec/modules/adagioBidAdapter_spec.js b/test/spec/modules/adagioBidAdapter_spec.js
index d552f08543e..b49a591d20d 100644
--- a/test/spec/modules/adagioBidAdapter_spec.js
+++ b/test/spec/modules/adagioBidAdapter_spec.js
@@ -380,6 +380,7 @@ describe('adagioAdapter', () => {
       let request = requests[0];
       expect(request.data.adUnits[0].features).to.exist;
       expect(request.data.adUnits[0].params.outerAdUnitElementId).to.exist;
+      top.ADAGIO.pbjsAdUnits = undefined;
     });
 
     it('generates a pageviewId if missing', () => {
diff --git a/test/spec/modules/realvuAnalyticsAdapter_spec.js b/test/spec/modules/realvuAnalyticsAdapter_spec.js
index d499743e8b4..e51a4e2e3a2 100644
--- a/test/spec/modules/realvuAnalyticsAdapter_spec.js
+++ b/test/spec/modules/realvuAnalyticsAdapter_spec.js
@@ -71,7 +71,7 @@ describe('RealVu', function() {
         ]
       };
       let result = realvuAnalyticsAdapter.checkIn(bid, '1Y');
-      const b = window.top1.realvu_aa;
+      const b = Object.assign({}, window.top1.realvu_aa);
       let a = b.ads[0];
       // console.log('a: ' + a.x + ', ' + a.y + ', ' + a.w + ', ' + a.h);
       // console.log('b: ' + b.x1 + ', ' + b.y1 + ', ' + b.x2 + ', ' + b.y2);
@@ -116,7 +116,7 @@ describe('RealVu', function() {
         eventType: CONSTANTS.EVENTS.BID_RESPONSE,
         args: args
       });
-      const boost = window.top1.realvu_aa;
+      const boost = Object.assign({}, window.top1.realvu_aa);
       expect(boost.ads[boost.len - 1].bids.length).to.equal(1);
 
       realvuAnalyticsAdapter.track({
@@ -128,8 +128,11 @@ describe('RealVu', function() {
   });
 
   describe('Boost.', function () {
-    const boost = window.top1.realvu_aa;
-
+    // const boost = window.top1.realvu_aa;
+    let boost;
+    beforeEach(function() {
+      boost = Object.assign({}, window.top1.realvu_aa);
+    });
     it('brd', function () {
       let a1 = document.getElementById('ad1');
       let p = boost.brd(a1, 'Left');
diff --git a/test/spec/modules/sortableAnalyticsAdapter_spec.js b/test/spec/modules/sortableAnalyticsAdapter_spec.js
index 5c2a27fb2d7..258c4b8f74d 100644
--- a/test/spec/modules/sortableAnalyticsAdapter_spec.js
+++ b/test/spec/modules/sortableAnalyticsAdapter_spec.js
@@ -154,6 +154,7 @@ describe('Sortable Analytics Adapter', function() {
 
   afterEach(function() {
     sandbox.restore();
+    clock.restore();
     sortableAnalyticsAdapter.disableAnalytics();
   });
 
@@ -175,6 +176,9 @@ describe('Sortable Analytics Adapter', function() {
   });
 
   describe('events tracking', function() {
+    beforeEach(function() {
+      server.requests = [];
+    });
     it('should send the PBID event', function() {
       events.emit(CONSTANTS.EVENTS.AUCTION_INIT, TEST_DATA.AUCTION_INIT);
       events.emit(CONSTANTS.EVENTS.BID_REQUESTED, TEST_DATA.BID_REQUESTED);
diff --git a/test/spec/modules/userId_spec.js b/test/spec/modules/userId_spec.js
index 8df4ae4611a..f717ef3a714 100644
--- a/test/spec/modules/userId_spec.js
+++ b/test/spec/modules/userId_spec.js
@@ -292,7 +292,7 @@ describe('User ID', function() {
     it('handles config with empty usersync object', function () {
       setSubmoduleRegistry([pubCommonIdSubmodule, unifiedIdSubmodule, id5IdSubmodule, identityLinkSubmodule, netIdSubmodule]);
       init(config);
-      config.setConfig({ usersync: {} });
+      config.setConfig({ userSync: {} });
       expect(typeof utils.logInfo.args[0]).to.equal('undefined');
     });
 
@@ -300,7 +300,7 @@ describe('User ID', function() {
       setSubmoduleRegistry([pubCommonIdSubmodule, unifiedIdSubmodule, id5IdSubmodule, identityLinkSubmodule, netIdSubmodule]);
       init(config);
       config.setConfig({
-        usersync: {
+        userSync: {
           userIds: [{}]
         }
       });
@@ -311,7 +311,7 @@ describe('User ID', function() {
       setSubmoduleRegistry([pubCommonIdSubmodule, unifiedIdSubmodule, id5IdSubmodule, identityLinkSubmodule, netIdSubmodule]);
       init(config);
       config.setConfig({
-        usersync: {
+        userSync: {
           userIds: [{
             name: '',
             value: { test: '1' }
@@ -336,7 +336,7 @@ describe('User ID', function() {
       setSubmoduleRegistry([pubCommonIdSubmodule, unifiedIdSubmodule, id5IdSubmodule, identityLinkSubmodule, liveIntentIdSubmodule, britepoolIdSubmodule, netIdSubmodule]);
       init(config);
       config.setConfig({
-        usersync: {
+        userSync: {
           syncDelay: 0,
           userIds: [{
             name: 'pubCommonId', value: {'pubcid': '11111'}
@@ -368,7 +368,7 @@ describe('User ID', function() {
       setSubmoduleRegistry([pubCommonIdSubmodule, unifiedIdSubmodule, id5IdSubmodule, identityLinkSubmodule, netIdSubmodule]);
       init(config);
       config.setConfig({
-        usersync: {
+        userSync: {
           syncDelay: 99,
           userIds: [{
             name: 'unifiedId',
@@ -383,7 +383,7 @@ describe('User ID', function() {
       setSubmoduleRegistry([pubCommonIdSubmodule, unifiedIdSubmodule, id5IdSubmodule, identityLinkSubmodule, netIdSubmodule]);
       init(config);
       config.setConfig({
-        usersync: {
+        userSync: {
           auctionDelay: 100,
           userIds: [{
             name: 'unifiedId',
@@ -398,7 +398,7 @@ describe('User ID', function() {
       setSubmoduleRegistry([pubCommonIdSubmodule, unifiedIdSubmodule, id5IdSubmodule, identityLinkSubmodule, netIdSubmodule]);
       init(config);
       config.setConfig({
-        usersync: {
+        userSync: {
           auctionDelay: '',
           userIds: [{
             name: 'unifiedId',
@@ -457,7 +457,7 @@ describe('User ID', function() {
 
     it('delays auction if auctionDelay is set, timing out at auction delay', function() {
       config.setConfig({
-        usersync: {
+        userSync: {
           auctionDelay: 33,
           syncDelay: 77,
           userIds: [{
@@ -490,7 +490,7 @@ describe('User ID', function() {
 
     it('delays auction if auctionDelay is set, continuing auction if ids are fetched before timing out', function(done) {
       config.setConfig({
-        usersync: {
+        userSync: {
           auctionDelay: 33,
           syncDelay: 77,
           userIds: [{
@@ -529,7 +529,7 @@ describe('User ID', function() {
 
     it('does not delay auction if not set, delays id fetch after auction ends with syncDelay', function() {
       config.setConfig({
-        usersync: {
+        userSync: {
           syncDelay: 77,
           userIds: [{
             name: 'mockId', storage: { name: 'MOCKID', type: 'cookie' }
@@ -565,7 +565,7 @@ describe('User ID', function() {
 
     it('does not delay user id sync after auction ends if set to 0', function() {
       config.setConfig({
-        usersync: {
+        userSync: {
           syncDelay: 0,
           userIds: [{
             name: 'mockId', storage: { name: 'MOCKID', type: 'cookie' }
@@ -596,7 +596,7 @@ describe('User ID', function() {
       utils.setCookie('MOCKID', JSON.stringify({'MOCKID': '123456778'}), new Date(Date.now() + 5000).toUTCString());
 
       config.setConfig({
-        usersync: {
+        userSync: {
           auctionDelay: 33,
           syncDelay: 77,
           userIds: [{
@@ -1061,7 +1061,7 @@ describe('User ID', function() {
       init(config);
 
       config.setConfig({
-        usersync: {
+        userSync: {
           syncDelay: 0,
           userIds: [{
             name: 'pubCommonId', storage: { name: 'pubcid', type: 'cookie' }