diff --git a/src/allPages.ts b/src/allPages.ts
index e57c5c0..f17cb40 100644
--- a/src/allPages.ts
+++ b/src/allPages.ts
@@ -10,7 +10,7 @@ import { MePage } from "./pages/Me";
 import { NewTOTPPage } from "./pages/TOTP/NewTOTP.js";
 import { Page } from "./types/Page";
 import { PwGenPage } from "./pages/PwGen";
-import { SetLanguagePage } from "./pages/SetLanguage.js";
+import { SetLanguagePage } from "./pages/SetLanguage";
 import { SetVaultURLPage } from "./pages/SetVaultURL.js";
 import { TOTPViewPage } from "./pages/TOTP/TOTPView.js";
 import { TransitDecryptPage } from "./pages/Transit/TransitDecrypt.js";
diff --git a/src/pages/SetLanguage.js b/src/pages/SetLanguage.ts
similarity index 82%
rename from src/pages/SetLanguage.js
rename to src/pages/SetLanguage.ts
index 67ab6c8..00c5cde 100644
--- a/src/pages/SetLanguage.js
+++ b/src/pages/SetLanguage.ts
@@ -2,18 +2,19 @@ import { Margin } from "../elements/Margin";
 import { Page } from "../types/Page";
 import { changePage, setPageContent } from "../pageUtils";
 import { makeElement } from "../htmlUtils";
-import { pageState } from "../globalPageState.ts";
+import { pageState } from "../globalPageState";
 import i18next from 'i18next';
+// @ts-ignore
 import translations from "../translations/index.mjs";
 
-let languageIDs = Object.getOwnPropertyNames(translations);
+const languageIDs = Object.getOwnPropertyNames(translations);
 
 export class SetLanguagePage extends Page {
   constructor() {
     super();
   }
-  render() {
-    let setLanguageForm = makeElement({
+  render(): void {
+    const setLanguageForm = makeElement({
       tag: "form",
       id: "setLanguageForm",
       children: [
@@ -46,12 +47,12 @@ export class SetLanguagePage extends Page {
           }
         })
       ]
-    });
+    }) as HTMLFormElement;
     setPageContent(setLanguageForm);
     setLanguageForm.addEventListener("submit", function (e) {
       e.preventDefault();
-      let formData = new FormData(setLanguageForm);
-      let language = formData.get("language");
+      const formData = new FormData(setLanguageForm);
+      const language = formData.get("language") as string;
       pageState.language = language;
       console.log(pageState.language);
       i18next.changeLanguage(language).then((t) => {
@@ -61,7 +62,7 @@ export class SetLanguagePage extends Page {
       });
     });
   }
-  get name() {
+  get name(): string {
     return i18next.t("set_language_title");
   }
 }
diff --git a/webpack.config.js b/webpack.config.js
index 87d1938..30ec592 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -26,7 +26,7 @@ module.exports = {
   },
   resolve: {
     modules: ['node_modules'],
-    extensions: ['.tsx', '.ts', '.js'],
+    extensions: ['.tsx', '.ts', '.js', ".mjs"],
   },
 
   module: {