Port the end-to-end test suite to v2 (#2179)

test/e2e/vitest.config.js

@@ -0,0 +1,15 @@
+import { defineConfig, mergeConfig } from 'vitest/config';
+
+import baseConfig from '../../common/vitest-config/vitest.config.js';
+
+export default mergeConfig(
+    baseConfig,
+    defineConfig({
+        test: {
+            // The e2e suite keeps its test files at the package root (coverage.test.ts,
+            // scenarios/*.test.ts, helpers/*.test.ts) rather than under test/.
+            include: ['**/*.test.ts'],
+            exclude: ['**/node_modules/**', '**/dist/**']
+        }
+    })
+);