// Debug harness: load a demo page, capture console + page errors + #err content.
import { chromium } from "@playwright/test";

const path = process.argv[2] ?? "/demo/no-coi.html";
const browser = await chromium.launch();
const page = await browser.newPage();
page.on("console", (m) => console.log(`[console:${m.type()}]`, m.text()));
page.on("pageerror", (e) => console.log("[pageerror]", e.message, "\n", e.stack?.split("\n").slice(0, 4).join("\n")));
page.on("requestfailed", (r) => console.log("[requestfailed]", r.url(), r.failure()?.errorText));
page.on("worker", (w) => console.log("[worker created]", w.url()));
await page.goto(`http://localhost:8931${path}`);
await page.waitForTimeout(3000);
const err = await page.locator("#err").textContent().catch(() => null);
const out = await page.locator("#out").textContent().catch(() => null);
const exit = await page.locator("#exit").textContent().catch(() => null);
console.log(JSON.stringify({ out, err, exit }, null, 2));
await browser.close();