Some minor fixes and refactoring

playwright.config.js

@@ -10,7 +10,7 @@ import { defineConfig, devices } from "@playwright/test"
 /**
  * @see https://playwright.dev/docs/test-configuration
  */
-defineConfig({
+export default defineConfig({
   testDir: './tests',
   /* Run tests in files in parallel */
   fullyParallel: true,