diff --git a/trackers/javascript-tracker/test/functional/activityCallback.test.ts b/trackers/javascript-tracker/test/functional/activityCallback.test.ts
index 79d4a22ba..0a5e9fb84 100644
--- a/trackers/javascript-tracker/test/functional/activityCallback.test.ts
+++ b/trackers/javascript-tracker/test/functional/activityCallback.test.ts
@@ -9,8 +9,9 @@ declare var findFirstEventForPageViewId: (id: string) => Record<string, unknown>
 declare var findLastEventForPageViewId: (id: string) => Record<string, unknown>;
 
 describe('Activity tracking with callbacks', () => {
-  if (browser.capabilities.browserName === 'internet explorer') {
-    fit('Skip IE', () => true);
+  const browserName = 'browserName' in browser.capabilities && browser.capabilities.browserName;
+  if (browserName === 'internet explorer') {
+    fit('Skip IE', () => {});
     return;
   }
 
diff --git a/trackers/javascript-tracker/test/integration/buttonClick.test.ts b/trackers/javascript-tracker/test/integration/buttonClick.test.ts
index bacaed1cf..c5c276f36 100644
--- a/trackers/javascript-tracker/test/integration/buttonClick.test.ts
+++ b/trackers/javascript-tracker/test/integration/buttonClick.test.ts
@@ -11,8 +11,9 @@ const loadUrlAndWait = async (url: string) => {
 };
 
 describe('Snowplow Micro integration', () => {
-  if (browser.capabilities.browserName === 'internet explorer') {
-    fit('Skip IE', () => true);
+  const browserName = 'browserName' in browser.capabilities && browser.capabilities.browserName;
+  if (browserName === 'internet explorer') {
+    fit('Skip IE', () => {});
     return;
   }
 
diff --git a/trackers/javascript-tracker/test/integration/helpers.ts b/trackers/javascript-tracker/test/integration/helpers.ts
index e71d298ca..7f0d95f97 100644
--- a/trackers/javascript-tracker/test/integration/helpers.ts
+++ b/trackers/javascript-tracker/test/integration/helpers.ts
@@ -1,5 +1,6 @@
 import { WaitUntilOptions } from 'webdriverio';
 import util from 'util';
+import { Capabilities } from '@wdio/types';
 
 declare module WebdriverIO {
   interface Browser {
@@ -48,8 +49,8 @@ export async function pageSetup() {
   if (!dockerUrl) {
     throw 'dockerInstanceUrl not available in `browser.sharedStore`';
   }
-  const testIdentifier =
-    browser.capabilities.browserName + '_' + browser.capabilities.browserVersion + '_' + Math.random();
+  const capabilities = browser.capabilities as Capabilities.DesiredCapabilities;
+  const testIdentifier = capabilities.browserName + '_' + capabilities.browserVersion + '_' + Math.random();
   await browser.url('/index.html');
   await browser.setCookies([
     { name: 'container', value: dockerUrl },
diff --git a/trackers/javascript-tracker/test/integration/integration.test.ts b/trackers/javascript-tracker/test/integration/integration.test.ts
index 28ba0966c..d3725a6ff 100755
--- a/trackers/javascript-tracker/test/integration/integration.test.ts
+++ b/trackers/javascript-tracker/test/integration/integration.test.ts
@@ -35,8 +35,9 @@ const geoContext = {
 };
 
 describe('Snowplow Micro integration', () => {
-  if (browser.capabilities.browserName === 'internet explorer') {
-    fit('Skip IE', () => true);
+  const browserName = 'browserName' in browser.capabilities && browser.capabilities.browserName;
+  if (browserName === 'internet explorer') {
+    fit('Skip IE', () => {});
     return;
   }
 
diff --git a/trackers/javascript-tracker/test/integration/onSessionUpdate.test.ts b/trackers/javascript-tracker/test/integration/onSessionUpdate.test.ts
index 9e77fd8e4..0e7fc4745 100644
--- a/trackers/javascript-tracker/test/integration/onSessionUpdate.test.ts
+++ b/trackers/javascript-tracker/test/integration/onSessionUpdate.test.ts
@@ -1,18 +1,20 @@
 import F from 'lodash/fp';
 import { fetchResults } from '../micro';
 import { pageSetup } from './helpers';
+import { Capabilities } from '@wdio/types';
 
 describe('onSessionUpdate callback feature', () => {
+  const capabilities = browser.capabilities as Capabilities.DesiredCapabilities;
   if (
-    browser.capabilities.browserName === 'internet explorer' &&
-    (browser.capabilities.version === '9' || browser.capabilities.browserVersion === '10')
+    capabilities.browserName === 'internet explorer' &&
+    (capabilities.version === '9' || capabilities.browserVersion === '10')
   ) {
-    fit('Skip IE 9 and 10', () => true);
+    fit('Skip IE 9 and 10', () => {});
     return;
   }
 
-  if (browser.capabilities.browserName === 'safari' && browser.capabilities.version === '8.0') {
-    fit('Skip Safari 8', () => true);
+  if (capabilities.browserName === 'safari' && capabilities.version === '8.0') {
+    fit('Skip Safari 8', () => {});
     return;
   }
 
diff --git a/trackers/javascript-tracker/test/media/media.test.ts b/trackers/javascript-tracker/test/media/media.test.ts
index a890669d9..dd57f12d9 100644
--- a/trackers/javascript-tracker/test/media/media.test.ts
+++ b/trackers/javascript-tracker/test/media/media.test.ts
@@ -1,6 +1,7 @@
 import _ from 'lodash';
 import { fetchResults } from '../micro';
 import { pageSetup, waitUntil } from '../integration/helpers';
+import { Capabilities } from '@wdio/types';
 
 const playVideoElement1Callback = () => {
   return (done: (_: void) => void) => {
@@ -102,7 +103,8 @@ const makeExpectedEvent = (
     },
   };
 
-  if (browser.capabilities.browserName === 'internet explorer') {
+  const browserName = 'browserName' in browser.capabilities && browser.capabilities.browserName;
+  if (browserName === 'internet explorer') {
     data.context[0].data.defaultMuted = false;
   }
 
@@ -151,16 +153,17 @@ describe('Media Tracking', () => {
       }
     };
 
+    const capabilities = browser.capabilities as Capabilities.DesiredCapabilities;
     if (
-      browser.capabilities.browserName === 'internet explorer' &&
-      (browser.capabilities.version === '9' || browser.capabilities.browserVersion === '10')
+      capabilities.browserName === 'internet explorer' &&
+      (capabilities.version === '9' || capabilities.browserVersion === '10')
     ) {
-      fit('Skip IE 9 and 10', () => true);
+      fit('Skip IE 9 and 10', () => {});
       return;
     }
 
-    if (browser.capabilities.browserName === 'safari' && browser.capabilities.version === '8.0') {
-      fit('Skip Safari 8', () => true);
+    if (capabilities.browserName === 'safari' && capabilities.version === '8.0') {
+      fit('Skip Safari 8', () => {});
       return;
     }
 
@@ -515,13 +518,14 @@ describe('Media Tracking', () => {
     Object.entries(expected).forEach(([name, properties]) => {
       // I can't find a good way of triggering an error event for firefox 53 or chrome 60, so they can
       // be skipped for now (events past 'error' are fired as a result of the error occouring)
+      const capabilities = browser.capabilities as Capabilities.DesiredCapabilities;
       if (
         (name === 'error' &&
-          browser.capabilities.browserName === 'firefox' &&
-          browser.capabilities.browserVersion === '53.0') ||
-        (browser.capabilities.browserName === 'chrome' && browser.capabilities.version === '60.0.3112.78')
+          capabilities.browserName === 'firefox' &&
+          capabilities.browserVersion === '53.0') ||
+        (capabilities.browserName === 'chrome' && capabilities.version === '60.0.3112.78')
       ) {
-        fit('Skip events from error', () => true);
+        fit('Skip events from error', () => {});
         return;
       } else {
         it('tracks ' + name, () => {
diff --git a/trackers/javascript-tracker/test/media/vimeo.test.ts b/trackers/javascript-tracker/test/media/vimeo.test.ts
index d028fb3ea..4dab0a53d 100644
--- a/trackers/javascript-tracker/test/media/vimeo.test.ts
+++ b/trackers/javascript-tracker/test/media/vimeo.test.ts
@@ -1,6 +1,7 @@
 import { VimeoEvent } from '@snowplow/browser-plugin-vimeo-tracking';
 import { pageSetup } from '../integration/helpers';
 import { fetchResults } from '../micro';
+import { Capabilities } from '@wdio/types';
 
 function compareContextObjects(expected: any, received: any) {
   expect(expected.schema).toEqual(received.schema);
@@ -51,37 +52,38 @@ const makeContext = () => {
 };
 
 const skipBrowsers = (browser: any) => {
-  if (browser.capabilities.browserName === 'internet explorer' && browser.capabilities.version === '9') {
-    fit('Skip IE 9', () => true);
+  const capabilities = browser.capabilities as Capabilities.DesiredCapabilities;
+  if (capabilities.browserName === 'internet explorer' && capabilities.version === '9') {
+    fit('Skip IE 9', () => {});
     return;
   }
 
-  if (browser.capabilities.browserName === 'internet explorer' && browser.capabilities.browserVersion === '10') {
-    fit('Skip IE 10', () => true);
+  if (capabilities.browserName === 'internet explorer' && capabilities.browserVersion === '10') {
+    fit('Skip IE 10', () => {});
     return;
   }
 
   // element not interactable: Element is not displayed
-  if (browser.capabilities.browserName === 'internet explorer' && browser.capabilities.browserVersion === '11') {
-    fit('Skip IE 11', () => true);
+  if (capabilities.browserName === 'internet explorer' && capabilities.browserVersion === '11') {
+    fit('Skip IE 11', () => {});
     return;
   }
 
   // Unknown command: {"name":"sendKeysToActiveElement","parameters":{"value":["k"]}}
-  if (browser.capabilities.browserName === 'safari' && browser.capabilities.version === '8.0') {
-    fit('Skip Safari 8', () => true);
+  if (capabilities.browserName === 'safari' && capabilities.version === '8.0') {
+    fit('Skip Safari 8', () => {});
     return;
   }
 
   // Element is obscured (WARNING: The server did not provide any stacktrace information)
-  if (browser.capabilities.browserName === 'MicrosoftEdge' && browser.capabilities.browserVersion === '13.10586') {
-    fit('Skip Edge 13', () => true);
+  if (capabilities.browserName === 'MicrosoftEdge' && capabilities.browserVersion === '13.10586') {
+    fit('Skip Edge 13', () => {});
     return;
   }
 
   // Driver info: driver.version: unknown
-  if (browser.capabilities.browserName === 'firefox' && browser.capabilities.version === '53.0') {
-    fit('Skip Firefox 53', () => true);
+  if (capabilities.browserName === 'firefox' && capabilities.version === '53.0') {
+    fit('Skip Firefox 53', () => {});
     return;
   }
 };
diff --git a/trackers/javascript-tracker/test/media/youtube.test.ts b/trackers/javascript-tracker/test/media/youtube.test.ts
index 9647e7b78..963ce868f 100644
--- a/trackers/javascript-tracker/test/media/youtube.test.ts
+++ b/trackers/javascript-tracker/test/media/youtube.test.ts
@@ -1,5 +1,6 @@
 import { fetchResults } from '../micro';
 import { pageSetup, waitUntil } from '../integration/helpers';
+import { Capabilities } from '@wdio/types';
 
 declare var player: YT.Player;
 
@@ -67,14 +68,15 @@ const compare = (expected: any, received: any) => {
 let log: Array<unknown> = [];
 
 function shouldSkipBrowser(browser: any): boolean {
+  const capabilities = browser.capabilities as Capabilities.DesiredCapabilities;
   return (
-    browser.capabilities.browserName === 'internet explorer' ||
+    capabilities.browserName === 'internet explorer' ||
     // Unknown command: {"name":"sendKeysToActiveElement","parameters":{"value":["k"]}}, Safari 12 keeps crashing
-    (browser.capabilities.browserName === 'safari' && browser.capabilities.browserVersion < 14) ||
+    (capabilities.browserName === 'safari' && parseInt(capabilities.browserVersion ?? "") < 14) ||
     // Element is obscured (WARNING: The server did not provide any stacktrace information)
-    (browser.capabilities.browserName === 'MicrosoftEdge' && browser.capabilities.browserVersion === '13.10586') ||
+    (capabilities.browserName === 'MicrosoftEdge' && capabilities.browserVersion === '13.10586') ||
     // Driver info: driver.version: unknown
-    (browser.capabilities.browserName === 'firefox' && browser.capabilities.version === '53.0')
+    (capabilities.browserName === 'firefox' && capabilities.version === '53.0')
   );
 }
 
@@ -112,7 +114,7 @@ describe('Youtube tracking', () => {
 
   describe('YouTube Tracker', () => {
     if (shouldSkipBrowser(browser)) {
-      fit('Skip browser', () => true);
+      fit('Skip browser', () => {});
       return;
     }
 
@@ -188,13 +190,14 @@ describe('Youtube tracking', () => {
     };
 
     Object.entries(expected).forEach(([name, properties]) => {
-      if (browser.capabilities.browserName === 'internet explorer' && name === 'playbackratechange') {
+      const capabilities = browser.capabilities as Capabilities.DesiredCapabilities;
+      if (capabilities.browserName === 'internet explorer' && name === 'playbackratechange') {
         return;
         // The hotkey for playback rate change doesn't work in IE
         // Trying to create a key sequence to change the option in the UI has proved to be
         // very unreliable, so this test is skipped
       }
-      if (browser.capabilities.browserName === 'safari' && name == 'percentprogress') {
+      if (capabilities.browserName === 'safari' && name == 'percentprogress') {
         return;
         // percentprogress events seem not be tracked reliably in Safari, should investigate why
       }
@@ -208,7 +211,7 @@ describe('Youtube tracking', () => {
 
   describe('YouTube Tracker (2 videos, 1 tracker)', () => {
     if (shouldSkipBrowser(browser)) {
-      fit('Skip browser', () => true);
+      fit('Skip browser', () => {});
       return;
     }
 
@@ -251,7 +254,7 @@ describe('Youtube tracking', () => {
 
   describe('YouTube Tracker (1 video, 2 trackers)', () => {
     if (shouldSkipBrowser(browser)) {
-      fit('Skip browser', () => true);
+      fit('Skip browser', () => {});
       return;
     }