chore(clerk-js): Convert all Jest tests to Vitest (#6798)

Co-authored-by: Jacek <[email protected]>

Author: Copilot

.changeset/two-dancers-wait.md

@@ -0,0 +1,2 @@
+---
+---

eslint.config.mjs

@@ -335,6 +335,7 @@ export default tseslint.config([
       jest: pluginJest,
     },
     rules: {
+      '@typescript-eslint/no-non-null-assertion': 'off',
       '@typescript-eslint/unbound-method': 'off',
       'jest/unbound-method': 'error',
     },
@@ -365,7 +366,7 @@ export default tseslint.config([
   },
   {
     name: 'packages/clerk-js - vitest',
-    files: ['packages/clerk-js/src/**/*.spec.{ts,tsx}'],
+    files: ['packages/clerk-js/src/**/*.test.{ts,tsx}'],
     rules: {
       'jest/unbound-method': 'off',
       '@typescript-eslint/unbound-method': 'off',

packages/clerk-js/jest.config.js

@@ -51,15 +51,10 @@
     "lint": "eslint src",
     "lint:attw": "attw --pack . --profile node16 --ignore-rules named-exports",
     "lint:publint": "publint || true",
-    "test": "jest && vitest --watch=false",
-    "test:cache:clear": "jest --clearCache --useStderr",
-    "test:ci": "jest --maxWorkers=70%",
-    "test:coverage": "jest --collectCoverage && open coverage/lcov-report/index.html",
-    "test:jest": "jest",
+    "test": "vitest --watch=false",
     "test:sandbox:integration": "playwright test",
     "test:sandbox:integration:ui": "playwright test --ui",
     "test:sandbox:integration:update-snapshots": "playwright test --update-snapshots",
-    "test:vitest": "vitest",
     "watch": "rspack build --config rspack.config.js --env production --watch"
   },
   "browserslist": "last 2 years",
@@ -97,7 +92,6 @@
     "@rspack/core": "^1.4.11",
     "@rspack/plugin-react-refresh": "^1.5.0",
     "@svgr/webpack": "^6.5.1",
-    "@swc/jest": "0.2.39",
     "@types/cloudflare-turnstile": "^0.2.2",
     "@types/node": "^22.18.1",
     "@types/webpack-env": "^1.18.8",

packages/clerk-js/jest.jsdom-with-timezone.ts

@@ -11,7 +11,6 @@ const mockEnvironmentFetch = vi.fn();
 vi.mock('../resources/Client');
 vi.mock('../resources/Environment');
 
-// Because Jest, don't ask me why...
 vi.mock('../auth/devBrowser', () => ({
   createDevBrowser: (): DevBrowser => ({
     clear: vi.fn(),