Optimize wasm bindgen asset with manganis (#3531)

packages/playwright-tests/cli-optimization.spec.js

@@ -0,0 +1,11 @@
+// @ts-check
+const { test, expect } = require("@playwright/test");
+
+test("optimized scripts run", async ({ page }) => {
+  await page.goto("http://localhost:8989");
+
+  // Expect the page to load the script after optimizations have been applied. The script
+  // should add an editor to the page that shows a main function
+  const main = page.locator("#main");
+  await expect(main).toContainText("hi");
+});