diff --git a/src/libs/actions/Device/generateDeviceID/index.android.js b/src/libs/actions/Device/generateDeviceID/index.android.ts
similarity index 92%
rename from src/libs/actions/Device/generateDeviceID/index.android.js
rename to src/libs/actions/Device/generateDeviceID/index.android.ts
index f61b860bda7d..0f6a7140e648 100644
--- a/src/libs/actions/Device/generateDeviceID/index.android.js
+++ b/src/libs/actions/Device/generateDeviceID/index.android.ts
@@ -1,5 +1,6 @@
 import DeviceInfo from 'react-native-device-info';
 import Str from 'expensify-common/lib/str';
+import GenerateDeviceID from './types';
 
 const deviceID = DeviceInfo.getDeviceId();
 const uniqueID = Str.guid(deviceID);
@@ -22,11 +23,7 @@ const uniqueID = Str.guid(deviceID);
  *
  * Furthermore, the deviceID prefix is not unique to a specific device, but is likely to change from one type of device to another.
  * Including this prefix will tell us with a reasonable degree of confidence if the user just uninstalled and reinstalled the app, or if they got a new device.
- *
- * @returns {Promise<String>}
  */
-function generateDeviceID() {
-    return Promise.resolve(uniqueID);
-}
+const generateDeviceID: GenerateDeviceID = () => Promise.resolve(uniqueID);
 
 export default generateDeviceID;
diff --git a/src/libs/actions/Device/generateDeviceID/index.desktop.js b/src/libs/actions/Device/generateDeviceID/index.desktop.ts
similarity index 61%
rename from src/libs/actions/Device/generateDeviceID/index.desktop.js
rename to src/libs/actions/Device/generateDeviceID/index.desktop.ts
index 26de25e326e8..04a291c5b3bb 100644
--- a/src/libs/actions/Device/generateDeviceID/index.desktop.js
+++ b/src/libs/actions/Device/generateDeviceID/index.desktop.ts
@@ -1,12 +1,9 @@
 import ELECTRON_EVENTS from '../../../../../desktop/ELECTRON_EVENTS';
+import GenerateDeviceID from './types';
 
 /**
  * Get the unique ID of the current device. This should remain the same even if the user uninstalls and reinstalls the app.
- *
- * @returns {Promise<String>}
  */
-function generateDeviceID() {
-    return window.electron.invoke(ELECTRON_EVENTS.REQUEST_DEVICE_ID);
-}
+const generateDeviceID: GenerateDeviceID = () => window.electron.invoke(ELECTRON_EVENTS.REQUEST_DEVICE_ID);
 
 export default generateDeviceID;
diff --git a/src/libs/actions/Device/generateDeviceID/index.ios.js b/src/libs/actions/Device/generateDeviceID/index.ios.ts
similarity index 61%
rename from src/libs/actions/Device/generateDeviceID/index.ios.js
rename to src/libs/actions/Device/generateDeviceID/index.ios.ts
index 6836edf1fcee..9562fc8bbf9b 100644
--- a/src/libs/actions/Device/generateDeviceID/index.ios.js
+++ b/src/libs/actions/Device/generateDeviceID/index.ios.ts
@@ -1,14 +1,11 @@
 import DeviceInfo from 'react-native-device-info';
+import GenerateDeviceID from './types';
 
 const deviceID = DeviceInfo.getDeviceId();
 
 /**
  * Get the unique ID of the current device. This should remain the same even if the user uninstalls and reinstalls the app.
- *
- * @returns {Promise<String>}
  */
-function generateDeviceID() {
-    return DeviceInfo.getUniqueId().then((uniqueID) => `${deviceID}_${uniqueID}`);
-}
+const generateDeviceID: GenerateDeviceID = () => DeviceInfo.getUniqueId().then((uniqueID) => `${deviceID}_${uniqueID}`);
 
 export default generateDeviceID;
diff --git a/src/libs/actions/Device/generateDeviceID/index.website.js b/src/libs/actions/Device/generateDeviceID/index.ts
similarity index 87%
rename from src/libs/actions/Device/generateDeviceID/index.website.js
rename to src/libs/actions/Device/generateDeviceID/index.ts
index b8abc4734134..cc631547e750 100644
--- a/src/libs/actions/Device/generateDeviceID/index.website.js
+++ b/src/libs/actions/Device/generateDeviceID/index.ts
@@ -1,4 +1,5 @@
 import Str from 'expensify-common/lib/str';
+import GenerateDeviceID from './types';
 
 const uniqueID = Str.guid();
 
@@ -13,11 +14,7 @@ const uniqueID = Str.guid();
  *
  * While this isn't perfect, it's just as good as any other obvious web solution, such as this one https://developer.mozilla.org/en-US/docs/Web/API/MediaDeviceInfo/deviceId
  * which is also different/reset under the same circumstances
- *
- * @returns {Promise<String>}
  */
-function generateDeviceID() {
-    return Promise.resolve(uniqueID);
-}
+const generateDeviceID: GenerateDeviceID = () => Promise.resolve(uniqueID);
 
 export default generateDeviceID;
diff --git a/src/libs/actions/Device/generateDeviceID/types.ts b/src/libs/actions/Device/generateDeviceID/types.ts
new file mode 100644
index 000000000000..43b6b89f6154
--- /dev/null
+++ b/src/libs/actions/Device/generateDeviceID/types.ts
@@ -0,0 +1,3 @@
+type GenerateDeviceID = () => Promise<string>;
+
+export default GenerateDeviceID;