diff --git a/webapp/src/utils/regex_utils.test.js b/webapp/src/utils/regex_utils.test.ts
similarity index 92%
rename from webapp/src/utils/regex_utils.test.js
rename to webapp/src/utils/regex_utils.test.ts
index 74dc76e4..990569ba 100644
--- a/webapp/src/utils/regex_utils.test.js
+++ b/webapp/src/utils/regex_utils.test.ts
@@ -1,4 +1,5 @@
 import {validateGitlabURL} from './regex_utils';
+import {describe, expect, it} from "@jest/globals";
 
 describe('validateGitlabURL should work as expected', () => {
     it('Should return true for valid GitLab repository URL', () => {
diff --git a/webapp/src/utils/regex_utils.js b/webapp/src/utils/regex_utils.ts
similarity index 71%
rename from webapp/src/utils/regex_utils.js
rename to webapp/src/utils/regex_utils.ts
index c1e9c38d..453d6a75 100644
--- a/webapp/src/utils/regex_utils.js
+++ b/webapp/src/utils/regex_utils.ts
@@ -1,4 +1,4 @@
-export function validateGitlabURL(url) {
+export function validateGitlabURL(url: string): boolean {
     const gitlabRegexPattern = /https?:\/\/(www\.)?.*\/([\w.?-]+)\/([\w-]+)\/-\/([\w-]+)\/([\d-]+$)/g;
     return gitlabRegexPattern.test(url);
 }
diff --git a/webapp/src/utils/url_utils.test.ts b/webapp/src/utils/url_utils.test.ts
new file mode 100644
index 00000000..b1011e4d
--- /dev/null
+++ b/webapp/src/utils/url_utils.test.ts
@@ -0,0 +1,13 @@
+import {describe, expect, it} from "@jest/globals";
+import {isValidUrl} from "./url_utils";
+
+
+describe('url_utils', () => {
+    it("should return true for a valid URL", () => {
+        expect(isValidUrl("https://mattermost.com")).toBe(true);
+    })
+
+    it.each(["abc@example.com", "xyz", "://example.com", "example.com"])("should return false for invalid URLs %s", (input) => {
+        expect(isValidUrl(input)).toBe(false);
+    })
+})
\ No newline at end of file
diff --git a/webapp/src/utils/url_utils.js b/webapp/src/utils/url_utils.ts
similarity index 63%
rename from webapp/src/utils/url_utils.js
rename to webapp/src/utils/url_utils.ts
index c8ddfe01..e96ee2fa 100644
--- a/webapp/src/utils/url_utils.js
+++ b/webapp/src/utils/url_utils.ts
@@ -1,4 +1,4 @@
-export const isValidUrl = (urlString) => {
+export const isValidUrl = (urlString: string): boolean => {
     try {
         return Boolean(new URL(urlString));
     } catch (e) {
diff --git a/webapp/src/utils/user_agent.js b/webapp/src/utils/user_agent.js
deleted file mode 100644
index 6f980f4e..00000000
--- a/webapp/src/utils/user_agent.js
+++ /dev/null
@@ -1,3 +0,0 @@
-const userAgent = window.navigator.userAgent;
-
-export const isDesktopApp = () => userAgent.indexOf('Mattermost') !== -1 && userAgent.indexOf('Electron') !== -1;
diff --git a/webapp/src/utils/user_agent.test.ts b/webapp/src/utils/user_agent.test.ts
new file mode 100644
index 00000000..bc24a286
--- /dev/null
+++ b/webapp/src/utils/user_agent.test.ts
@@ -0,0 +1,25 @@
+import {describe, expect, it, jest} from "@jest/globals";
+import {isDesktopApp} from "./user_agent";
+
+
+describe("user_agent", () => {
+    it("should return true if 'Mattermost' and 'Electron' are in userAgent", () => {
+        jest.spyOn(window.navigator, 'userAgent', 'get').mockReturnValue('Mattermost Electron')
+        expect(isDesktopApp()).toBe(true);
+    })
+
+    it("should return false if only 'Mattermost' present in userAgent", () => {
+        jest.spyOn(window.navigator, 'userAgent', 'get').mockReturnValue('Mattermost')
+        expect(isDesktopApp()).toBe(false);
+    })
+
+    it("should return false if only 'Electron' present in userAgent", () => {
+        jest.spyOn(window.navigator, 'userAgent', 'get').mockReturnValue('Electron')
+        expect(isDesktopApp()).toBe(false);
+    })
+
+    it("should return false if neither 'Mattermost' nor 'Electron' present in userAgent", () => {
+        jest.spyOn(window.navigator, 'userAgent', 'get').mockReturnValue('Google chrome')
+        expect(isDesktopApp()).toBe(false);
+    })
+})
\ No newline at end of file
diff --git a/webapp/src/utils/user_agent.ts b/webapp/src/utils/user_agent.ts
new file mode 100644
index 00000000..ffdda72c
--- /dev/null
+++ b/webapp/src/utils/user_agent.ts
@@ -0,0 +1,4 @@
+export const isDesktopApp = () => {
+    const userAgent = window.navigator.userAgent;
+    return userAgent.indexOf('Mattermost') !== -1 && userAgent.indexOf('Electron') !== -1
+};
diff --git a/webapp/src/utils/user_utils.js b/webapp/src/utils/user_utils.js
deleted file mode 100644
index cf2329a6..00000000
--- a/webapp/src/utils/user_utils.js
+++ /dev/null
@@ -1,17 +0,0 @@
-import {getFullName} from 'mattermost-redux/utils/user_utils';
-
-export function displayUsernameForUser(user, config) {
-    if (user) {
-        const nameFormat = config.TeammateNameDisplay;
-        let name = user.username;
-        if (nameFormat === 'nickname_full_name' && user.nickname && user.nickname !== '') {
-            name = user.nickname;
-        } else if ((user.first_name || user.last_name) && (nameFormat === 'nickname_full_name' || nameFormat === 'full_name')) {
-            name = getFullName(user);
-        }
-
-        return name;
-    }
-
-    return '';
-}