diff --git a/jest.config.js b/jest.config.mts
similarity index 90%
rename from jest.config.js
rename to jest.config.mts
index 7914d35b..63d829a4 100644
--- a/jest.config.js
+++ b/jest.config.mts
@@ -1,4 +1,4 @@
-module.exports = {
+export default {
   preset: 'ts-jest',
   testEnvironment: 'node',
   moduleFileExtensions: ['ts', 'js', 'json', 'vue'],
diff --git a/postcss.config.js b/postcss.config.mts
similarity index 77%
rename from postcss.config.js
rename to postcss.config.mts
index 12a703d9..2aa7205d 100644
--- a/postcss.config.js
+++ b/postcss.config.mts
@@ -1,4 +1,4 @@
-module.exports = {
+export default {
   plugins: {
     tailwindcss: {},
     autoprefixer: {},
diff --git a/src/test/ContactListItem.test.ts b/src/test/ContactListItem.test.ts
index 773a6fc0..8a2c3f2a 100644
--- a/src/test/ContactListItem.test.ts
+++ b/src/test/ContactListItem.test.ts
@@ -179,7 +179,7 @@ describe("ContactListItem", () => {
       expect(wrapper.emitted("open-offer-dialog")).toBeTruthy();
       // Test that both parameters are emitted correctly
       const emittedData = wrapper.emitted("open-offer-dialog")[0];
-      expect(emittedData[0]).toEqual(["did:ethr:test:other", contact.name]);
+      expect(emittedData).toEqual(["did:ethr:test:other", contact.name]);
     });
   });
 
diff --git a/src/vite.config.utils.js b/src/vite.config.utils.js
deleted file mode 100644
index 719edfc7..00000000
--- a/src/vite.config.utils.js
+++ /dev/null
@@ -1,55 +0,0 @@
-import * as path from "path";
-import { promises as fs } from "fs";
-import { fileURLToPath } from "url";
-
-export async function loadAppConfig() {
-  const packageJson = await loadPackageJson();
-  const appName = process.env.TIME_SAFARI_APP_TITLE || packageJson.name;
-  const __dirname = path.dirname(fileURLToPath(import.meta.url));
-
-  return {
-    pwaConfig: {
-      manifest: {
-        name: appName,
-        short_name: appName,
-        icons: [
-          {
-            src: "./img/icons/android-chrome-192x192.png",
-            sizes: "192x192",
-            type: "image/png",
-          },
-          {
-            src: "./img/icons/android-chrome-512x512.png",
-            sizes: "512x512",
-            type: "image/png",
-          },
-          {
-            src: "./img/icons/android-chrome-maskable-192x192.png",
-            sizes: "192x192",
-            type: "image/png",
-            purpose: "maskable",
-          },
-          {
-            src: "./img/icons/android-chrome-maskable-512x512.png",
-            sizes: "512x512",
-            type: "image/png",
-            purpose: "maskable",
-          },
-        ],
-      },
-    },
-    aliasConfig: {
-      "@": path.resolve(path.dirname(__dirname), "src"),
-      buffer: path.resolve(path.dirname(__dirname), "node_modules", "buffer"),
-      "dexie-export-import/dist/import":
-        "dexie-export-import/dist/import/index.js",
-    },
-  };
-}
-
-async function loadPackageJson() {
-  const __dirname = path.dirname(fileURLToPath(import.meta.url));
-  const packageJsonPath = path.resolve(path.dirname(__dirname), "package.json");
-  const packageJsonData = await fs.readFile(packageJsonPath, "utf-8");
-  return JSON.parse(packageJsonData);
-}
diff --git a/tailwind.config.js b/tailwind.config.mts
similarity index 86%
rename from tailwind.config.js
rename to tailwind.config.mts
index bfcdb5a2..702ff10d 100644
--- a/tailwind.config.js
+++ b/tailwind.config.mts
@@ -1,5 +1,5 @@
 /** @type {import('tailwindcss').Config} */
-module.exports = {
+export default {
   content: ["./src/**/*.vue"],
   theme: {
     extend: {},