diff --git a/tests/e2e/nativeCommands/NativeCommandsAction.js b/tests/e2e/nativeCommands/NativeCommandsAction.ts
similarity index 62%
rename from tests/e2e/nativeCommands/NativeCommandsAction.js
rename to tests/e2e/nativeCommands/NativeCommandsAction.ts
index 24ceefb5acb7..17187ca66f1c 100644
--- a/tests/e2e/nativeCommands/NativeCommandsAction.js
+++ b/tests/e2e/nativeCommands/NativeCommandsAction.ts
@@ -1,17 +1,19 @@
+import type {NativeCommand} from '@libs/E2E/client';
+
 const NativeCommandsAction = {
     scroll: 'scroll',
     type: 'type',
     backspace: 'backspace',
-};
+} as const;
 
-const makeTypeTextCommand = (text) => ({
+const makeTypeTextCommand = (text: string): NativeCommand => ({
     actionName: NativeCommandsAction.type,
     payload: {
         text,
     },
 });
 
-const makeBackspaceCommand = () => ({
+const makeBackspaceCommand = (): NativeCommand => ({
     actionName: NativeCommandsAction.backspace,
 });
 
diff --git a/tests/e2e/utils/sleep.js b/tests/e2e/utils/sleep.ts
similarity index 54%
rename from tests/e2e/utils/sleep.js
rename to tests/e2e/utils/sleep.ts
index 6d37ca3cd510..c3f7142a898f 100644
--- a/tests/e2e/utils/sleep.js
+++ b/tests/e2e/utils/sleep.ts
@@ -1,5 +1,7 @@
-export default function sleep(ms) {
+function sleep(ms: number): Promise<void> {
     return new Promise((resolve) => {
         setTimeout(resolve, ms);
     });
 }
+
+export default sleep;
diff --git a/tests/utils/waitForBatchedUpdates.js b/tests/utils/waitForBatchedUpdates.ts
similarity index 94%
rename from tests/utils/waitForBatchedUpdates.js
rename to tests/utils/waitForBatchedUpdates.ts
index c9d7a99fa1fb..8455371093d8 100644
--- a/tests/utils/waitForBatchedUpdates.js
+++ b/tests/utils/waitForBatchedUpdates.ts
@@ -10,10 +10,8 @@ import getIsUsingFakeTimers from './getIsUsingFakeTimers';
  *  than to do
  *  ❌  Onyx.merge(...)
  *      waitForBatchedUpdates().then(...)
- *
- * @returns {Promise}
  */
-export default () =>
+const waitForBatchedUpdates = (): Promise<void> =>
     new Promise((outerResolve) => {
         // We first need to exhaust the microtask queue, before we schedule the next task in the macrotask queue (setTimeout).
         // This is because we need to wait for all async onyx operations to finish, as they might schedule other macrotasks,
@@ -38,3 +36,5 @@ export default () =>
             setTimeout(outerResolve, 0);
         });
     });
+
+export default waitForBatchedUpdates;
diff --git a/tests/utils/waitForNetworkPromises.js b/tests/utils/waitForNetworkPromises.ts
similarity index 74%
rename from tests/utils/waitForNetworkPromises.js
rename to tests/utils/waitForNetworkPromises.ts
index a60061d597e3..8c35514b870e 100644
--- a/tests/utils/waitForNetworkPromises.js
+++ b/tests/utils/waitForNetworkPromises.ts
@@ -8,7 +8,7 @@ import waitForBatchedUpdates from './waitForBatchedUpdates';
  *  than to do
  *  ❌  Onyx.merge(...)
  *      waitForBatchedUpdates().then(...)
- *
- * @returns {Promise}
  */
-export default () => waitForBatchedUpdates().then(waitForBatchedUpdates);
+const waitForNetworkPromises = (): Promise<void> => waitForBatchedUpdates().then(waitForBatchedUpdates);
+
+export default waitForNetworkPromises;
diff --git a/tests/utils/wrapOnyxWithWaitForBatchedUpdates.js b/tests/utils/wrapOnyxWithWaitForBatchedUpdates.ts
similarity index 84%
rename from tests/utils/wrapOnyxWithWaitForBatchedUpdates.js
rename to tests/utils/wrapOnyxWithWaitForBatchedUpdates.ts
index e5b6e6bfdfcf..862f3281b2b8 100644
--- a/tests/utils/wrapOnyxWithWaitForBatchedUpdates.js
+++ b/tests/utils/wrapOnyxWithWaitForBatchedUpdates.ts
@@ -1,3 +1,4 @@
+import type Onyx from 'react-native-onyx';
 import waitForBatchedUpdates from './waitForBatchedUpdates';
 
 /**
@@ -7,10 +8,8 @@ import waitForBatchedUpdates from './waitForBatchedUpdates';
  * are rendered with the onyx data.
  * This is a convinience function, which wraps the onyxInstance's
  * functions, to for the promises to resolve.
- *
- * @param {Object} onyxInstance
  */
-export default function wrapOnyxWithWaitForBatchedUpdates(onyxInstance) {
+function wrapOnyxWithWaitForBatchedUpdates(onyxInstance: typeof Onyx) {
     const multiSetImpl = onyxInstance.multiSet;
     // eslint-disable-next-line no-param-reassign
     onyxInstance.multiSet = (...args) => multiSetImpl(...args).then((result) => waitForBatchedUpdates().then(() => result));
@@ -18,3 +17,5 @@ export default function wrapOnyxWithWaitForBatchedUpdates(onyxInstance) {
     // eslint-disable-next-line no-param-reassign
     onyxInstance.merge = (...args) => mergeImpl(...args).then((result) => waitForBatchedUpdates().then(() => result));
 }
+
+export default wrapOnyxWithWaitForBatchedUpdates;